The true statement is that; "Halo stars formed before disk stars, The protogalactic cloud contained essentially no elements besides hydrogen and helium."
What is a star?We know that a star is a part of the solar system. The solar system is made up of many of the celestial bodies that can be found in the outer space. Some of them are able to produce light while some of the bodies that can be found in the solar system do not produce light.
The milky way is the star galaxy that has been known to govern the earth and it is known to develop at a slower rate than all the other galaxies that we know.
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Missing parts;
According to present scientific understanding of the Milky Way's formation, which of the following statements are true? Select al that apply. Halo stars are stars that are born in the disk and ejected into the halo by gravitational encounters. The galaxy formed from the collapse of a single, giant protogalactic cloud. Disk stars formed before halo stars. Halo stars formed before disk stars. The protogalatic cloud(s) contained essentially no elements besides hydrogen and helium
a pitot tube (fig. 14-48) is used to determine the airspeed of an airplane. it consists of an outer tube with a number of small holes b (four are shown) that allow air into the tube; that tube is connected to one arm of a u-tube. the other arm of the u-tube is connected to hole a at the front end of the device, which points in the direction the plane is headed. at a the air becomes stagnant so that va = 0, At B, however, the speed of the air presumably equals the airspeed B of the plane. Use Bernoulli's equation to derive a formula giving the air speed in terms of the difference h in the liquid levels in that tube, the density rho of the liquid in the U-tube, and the density of air Pair. Suppose that the tube contains alcohol and the level difference h is 34.0 cm. What is the plane's speed relative to the air? The density of the air is 1.14 kg/m3 and that of alcohol is 810 kg/m3. Air Hole A Liquid Number Units
Air speed in terms of the difference in the liquid levels in that tube is 68.85 m/s.
The density rho of the liquid in the U-tube is 810 kg/m³.
The density of air is 1.14 kg/m³.
What is Bernoulli's equation?
The conservation of energy concept as it applies to flowing fluids is stated by the Bernoulli equation. The reduction of fluid pressure in locations where the flow velocity is increased is the qualitative characteristic that is typically referred to as the "Bernoulli effect." Although this reduction of pressure in a flow route restriction may appear contradictory, it becomes less so if you think of pressure as energy density. Kinetic energy must rise at the expense of pressure energy in the high-velocity flow through the restriction.
We know.
Bernoulli's equation = P1 + hρg + [tex]\frac{1}{2}[/tex]ρ(a) v1² = P2 + hρg + [tex]\frac{1}{2}[/tex]ρv2²
Now, P is same : v2 will be 0.
[tex]\frac{1}{2}[/tex]ρ(a)v1² = hρg
v1 = [tex]\sqrt{(2hrhog)/rho(a)}[/tex]
Given,
h = 34cm = 0.34 m
rho, ρ = 810 kg/m³
ρ (a) = 1.14 kg/m³
v1 = v = [tex]\sqrt{2 X 0.34 X 810 X 9.81/1.14}[/tex] = 68.85 m/s
Hence, v = 68.85 m/s
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Open the Rotation Curve of a Spiral Galaxy animation and click at various distances from the galactic center to create a graph of the galaxy's rotation curve; be sure to start with points very close to the galactic center and continue to well beyond the visible part of the galaxy. Which of the following statements best describes the pattern of the graph?
Starting from the center, speeds at first rise rapidly, and then become nearly constant with increasing distance.
The Rotation Curve of a Spiral Galaxy animation and click on at various distances from the galactic center to create a graph of the galaxy's rotation curve beginning from the center, speeds in the beginning upward push hastily, after which turn out to be nearly consistent with increasing distance.
Circ = R ∂Φ/∂R. mean orbital motion and their bulk rotational speed can be slightly smaller than the round pace. Spectroscopic radial velocities may be used to determine the rotational velocities of spiral galaxies provided that the galaxies are inclined to the line of sight.
The rotation curve (RC) of our Galaxy, the Milky Way, is built starting from its very internal regions (few hundred parsecs) out to a massive galactocentric distance of ∼2 hundred kpcs the usage of kinematical statistics on an expansion of tracer gadgets shifting in the gravitational potential of the Galaxy, without assuming any theoretical.
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Kinematics - A airplane starts from rest and must reach 20 m/s to take off. If the plane can accelerate at 1.2 m/s^2, find the minimum length of the runway. Pick the closest answer. A) 320 m B) 240 m C) 167 m D) 8.3 m
The minimum length of the runway is closer to 167 m. Hence, option (C) is correct.
What is acceleration?Acceleration is the rate at which a velocity changes over time. It qualifies as a vector quantity because it possesses both direction and magnitude. Meter/second^2 (m/s^2) is the SI unit of acceleration.
Given that acceleration of the plane: a = 1.2 m/s^2.
Final speed of the plane from rest: v = 20 m/s.
Hence, required minimum length of the runway = v²/2a
= 20²/(2×1.2) m
= 166.67 meter.
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An object's center of mass is Select all that apply: the point about which the net torque is zero the point about which an unconstrained rotation occurs the geometric center of the object the mass-weighted center of the object the point about which the angular momentum is zero
First and Fourth option is correct
Center of mass of an object:
The centroid of a mass distribution in space (also called the equilibrium point) is the unique point where the weighted relative positions of the distribution masses sum to zero. This is the point where force can be applied to produce linear acceleration without angular acceleration. Mechanics calculations are often simplified when formulated in terms of the center of gravity. This is a virtual point at which the entire mass of the object can be assumed concentrated in order to visualize its motion. In other words, the center of mass is the particle equivalent of a particular object for which Newton's laws of motion apply.
Angular momentum:
Angular momentum is the rotational analogue of linear momentum. It is an important physical quantity because it is conserved. The total angular momentum of a closed system remains constant. Angular momentum has both direction and magnitude, both of which are conserved.
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Describe the words the motion of the object from 0- 6.0s
The motion of the object from 0 to 6 seconds is a linear motion; the displacement of the object is zero between 0 to 2 seconds, afterwards between 2 to 6 seconds, the displacement of the object increased with increase in time of motion.
What is the motion of an object?
The motion of an object is described as the change in the position of an object with time.
The motion of an object can occur at;
constant velocityconstant accelerationuniform velocityincreasing velocityDuring the motion of an object at a constant velocity, the acceleration of the object for the time period is zero.
If the motion of the object occurs at uniform velocity, the acceleration of the object will be constant.
In the given graph, we can conclude the following based on the object's motion;
between 0 to 2 seconds : the displacement of the object is zerobetween 2 to 6 seconds: the displacement of the object increased with increase in time of motion.Learn more about motion of an object here: https://brainly.com/question/28180340
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The absorption spectrum for chlorophylls a and b are shown by the graph. These are two pigments found in plants and green algae that are the main pigments of photosynthesis.
At which wavelength of light would photosynthesis be at its lowest?The absorption spectrum for chlorophylls a and b are shown by the graph. These are two pigments found in plants and green algae that are the main pigments of photosynthesis.
At which wavelength of light would photosynthesis be at its lowest?
A.) 450 nm
B.) 550 nm
C.) 650 nm
D.) 400 nm
The wavelength of light would photosynthesis be at its lowest at 650nm.
The correct option is C.
What is wavelength?The wavelength is the spatial period of a periodic wave which is the distance over which the wave's shape repeats.
Since the absorption spectrum for chlorophylls a and b are shown by the graph which indicates that there are two pigments found in plants and green algae that are the main pigments of photosynthesis.
At point 650nm, the wavelength of light would photosynthesis be at its lowest because red has longest wavelength, at around 620 - 780 nanometers with lowest frequency.
In conclusion, the wavelength of light is defined as “the distance between the two successive crests or troughs of the light wave” and is denoted by the Greek letter lambda.
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the difference between eps (earnings per share) and ffo (funds from operations) is the interest deduction. True or False?
The given statement about EPS ( earnings per share) and FFO (funds from operations) is false. They are not interest deduction.
Net operating income is represented by EPS. Taxes and preferred dividends are factored into FFO (funds from operations), which also leverages them. Cash flow is not a factor in FFO. Net income to the number of outstanding shares is expressed as an EPS ratio. As previously indicated, companies may add FFO per share to their EPS.
Net income divided by the number of outstanding equity shares is earnings per share for a business. The amount of income being produced on a per-share basis is measured by EPS and FFO per share. the income per share. The company's profit, which belongs to the common shareholders, is measured in terms of earnings per share.
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A student decided to find the density of her house key to try and identify the type of metal from which it is made. She found the volume of the key to be 5 mL and the mass to be 39.5 g.
The density of her house key is 7.9 g/ml, So the metal is Bronze - lead.
Density is the substance's mass consistent with the unit of quantity. The symbol most customarily used for density is ρ, despite the fact that the Latin letter D can also be used. Density is the size of ways tightly a cloth is packed together. it's far defined as the mass consistent with unit quantity.
ρ = m/V, wherein ρ is the density, m is the mass of the item and V is the quantity of the object.
The density of a liquid is a measure of how heavy it is for the quantity measured. in case you weigh the same amounts or volumes of two one-of-a-kind beverages, the liquid that weighs extra is greater dense.
Calculation:-
Density = mass/volume
= 39.5 / 5
= 7.9 g/ml
The density is of two types, one is absolute density, and the alternative is relative density. Relative density is also called unique gravity, which is the ratio of the density of a material to the density of a reference material. typically, the reference fabric is water.
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Can someone help me find F2
The net electric force on particle q₂ is determined as -9.86 N.
What is the net force of particle q₂?The net force of particle q₂ is determined by applying Coulomb's law of electrostatic force.
The electric force between particle q₁ and q₂ is the repulsive force and the magnitude is calculated as;
F₁₂ = kq₁q₂ / r²
where;
K is the Coulomb's constantq₁ is the magnitude of charge 1q₂ is the magnitude of charge 2r is the distance between charge 1 and charge 2F₁₂ = -(9 x 10⁹ x 13 x 10⁻⁶ x 7.7 x 10⁻⁶) / (0.25²)
F₁₂ = -14.4 N
The electric force between particle q₃ and q₂ is the attractive force and the magnitude is calculated as;
F₂₃ = kq₃q₂ / r²
F₂₃ = (9 x 10⁹ x 5.9 x 10⁻⁶ x 7.7 x 10⁻⁶) / (0.3²)
F₂₃ = + 4.54 N
The net force on the particle q₂ is calculated as;
F (net) = F₁₂ + F₂₃
F (net) = -14.4 + 4.54
F (net) = -9.86 N
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1. What is a virtual image? List a property that is associated with virtual images. 2. What is the difference between a concave and convex lens (assume both sides are convex or both sides are concave)? Sketch a concave lens and a convex lens below (label both). 3. Repeat the previous question, but with mirrors instead of lenses. 4. You can use a large magnifying glass on a sunny day to ignite a piece of paper. Will the same trick work with a curved mirror? Would the mirror need to be convex or concave? Where would you need t put the paper? Note: Don't actually try this, since you could easily burn or blind yourself!
1. A virtual image is a made-up picture. A light beam that is diverging causes it to happen.
2. Convex lenses are converging lenses, whereas concave lenses are diverging lenses. When parallel rays enter a convex lens, the beams converge to a single point (the focal point), but in the case of a concave lens, the beams diverge.
3. Parallel rays converge to a point at a concave mirror and divert to a convex mirror when they reach it. Convex lenses are analogous to concave mirrors.
4. A concave mirror can indeed be utilized to ignite.
What are concave and convex mirror?
When a hollow sphere's inside surface serves as the reflecting surface and the cut part's outside is painted, the result is a mirror. A concave mirror is the name for this kind of mirror.
If the hollow sphere's cut-out portion is painted from the inside out, then its outside becomes the reflective surface. A convex mirror is the name given to this type of mirror.
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Figure shows (Figure 1) a low-pass filter; the output voltage is taken across the capacitor in an L-R-C series circuit Part A Derive an expression for Vout/Vs, the ratio of the output and source voltage amplitudes, as a function of the angular frequency w of the source OV = wc R+W L- e a dew.L everyone 0 o Vot wc/r-wc-a wC /Re-(w 'wc/r+(w It is 1 Vout = Submit Request Answer Figure < 1 of 1 Part B Find an expression for Vout/V, when w is large. 0 1 0 ) (LC HE V O (LC) 0000 O (LC) w2
The output voltage is measured across the capacitor in an L-R-C series circuit, and the expression for Vout/vs for a low-pass filter is 1/(1-w^2lc + (wcR)^2. depending on the angular frequency.
A linear shunt regulator's output voltage (LSR) is defined as the difference between the input voltage and the sum of the current flowing through the shunt resistance, and it is denoted by Vo = Vi- (io+Ish)*Rsh or output voltage = input voltage- (output current + shunt field current)*shunt field resistance. The angular frequency, also known as the angular frequency vector, is the size of the vector quantity called angular velocity. The rotational speed of an object is measured by its angular frequency. It is helpful in many scientific and mathematical fields since it makes it possible to comprehend a wide range of physical world objects' qualities.
Vout = Vs/(R+jwl+1/jwc)
Vout/vs = 1/(1-w^2lc + (wcR)^2
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Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation. A free-body diagram is a special example of the vector diagrams that were discussed in an earlier unit. These diagrams will be used throughout our study of physics. The size of the arrow in a free-body diagram reflects the magnitude of the force. The direction of the arrow shows the direction that the force is acting. Each force arrow in the diagram is labeled to indicate the exact type of force. It is generally customary in a free-body diagram to represent the object by a box and to draw the force arrow from the center of the box outward in the direction that the force is acting. An example of a free-body diagram is shown at the right The free-body diagram above depicts four forces acting upon the object. Objects do not necessarily always have four forces acting upon them. There will be cases in which the number of forces depicted by a free-body diagram will be one, two, or three. There is no hard and fast rule about the number of forces that must be drawn in a free-body diagram. The only rule for drawing free-body diagrams is to depict all the forces that exist for that object in the given situation. Thus, to construct free-body diagrams, it is extremely important to know the various types of forces. If given a description of a physical situation, begin by using your understanding of the force types to identify which forces are present. Then determine the direction in which each force is acting. Finally, draw a box and add arrows for each existing force in the appropriate direction; label each force arrow according to its type. If necessary, refer to the list of forces and their description in order to understand the various force types and their appropriate symbols.
A visual, dematerialized, symbolic depiction of the body (a structure, element, or fragment of an element) in which all connecting "parts" have been eliminated is known as a free-body diagram.
A diagram that changes when the issue is resolved is called a free-body diagram. A free body diagram often includes the following elements:A condensed form of the body (most commonly a box).A coordinate framework.Arrows showing in the direction in which forces operate on the body are used to depict forces.Moments appeared as curved arrows pointing towards the body's acting direction.The specific problem and the presumptions used will determine how many forces are operating on a body. Friction and air resistance are frequently ignored.
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4. The bar has a mass of 10 kg and is subjected to a couple moment of M=50 N·m and a force of P=80 N, which is always applied perpendicular to the end of the bar. The stiffness of spring is k=30 N/m and its free length is 0.5 m. The spring remains in the vertical position due to the roller guide at B. Determine the total work done by all the force acting on the bar when it has rotated downward from (=0( to 90 (. (15 points)
The total work done by all the force acting on the bar when it has rotated downward from 0 to 90° is 4500 N·m.
Solving for total work done:The total work done by all the forces acting on the bar can be calculated using the equation for work done by a torque and a spring force.
m = 10 kg
M= 50 N·m
P=80 N
k=30 N/m
x₀ = 0.5 m
θ = 90°
The work done by the torque is given by:
work_torque = M * θ
where,
M= the couple moment
θ = theta is the angle of rotation (90 degrees).
The work done by the spring force is given by:
work_spring = 1/2 * k * (x² - x₀²)
where,
k = the spring constant
x = the displacement of the spring
x₀ = the free length of the spring.
Since the spring is in a vertical position due to the roller guide at B, it will not displace and x=x₀=0.5m, and no work done by spring force.
Therefore, the total work done by all the forces acting on the bar is:
work_total = work_torque
M * θ = 50 N·m * 90 degrees
= 4500 N·m
Hence, the total work done by all the force acting on the bar is 4500 N·m when it has rotated downward from 0 to 90°.
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You hold a spherical salad bowl 64 cm in front of your face with the bottom of the bowl facing you. The salad bowl is made of polished metal with a 40-cm radius of curvature.Part A Where is the image of your 5.0-cm - tall nose located? Follow the sign rules. Express your answer to two significant figures and include the appropriate units.Part B What is the image's size? Express your answer to two significant figures and include the appropriate units.Explain.
The image's size is 1.2 cm.
Given data:
- [tex]$d_0$[/tex] is the distance of the face from the bottom of the bowl
- [tex]$R=40 \mathrm{~cm}$[/tex] is the radius of curvature of the bowl
-[tex]$h_o=5 \mathrm{~cm}$[/tex] is the height of the nose
What is bottom of the bowl acts as a convex mirror?
The focal length of the convex mirror is given by:
[tex]f=-\frac{R}{2}$$[/tex]
or
[tex]f=-\frac{40 \mathrm{~cm}}{2}$$[/tex]
or
[tex]f=-20 \mathrm{~cm}$$[/tex]
Let, [tex]$d_i$[/tex] be the distance of the image of the nose.
The mirror equation is given by:
[tex]\frac{1}{f}=\frac{1}{d_o}+\frac{1}{d_i}$$[/tex]
we have:
-[tex]$d_o=64 \mathrm{~cm}$[/tex]
- [tex]$f=-20 \mathrm{~cm}$[/tex]
Let, [tex]$d_i$[/tex] be the distance of the image of the nose.
The mirror equation is given by:
[tex]\frac{1}{f}=\frac{1}{d_o}+\frac{1}{d_i}$$[/tex]
we have:
[tex]$\bullet d_o=64 \mathrm{~cm}$[/tex]
- [tex]$f=-20 \mathrm{~cm}$[/tex]
Plugging in the values, we get:
[tex]$$\begin{aligned}& \frac{1}{-20 \mathrm{~cm}}=\frac{1}{64 \mathrm{~cm}}+\frac{1}{d_i} \\& \text { or } \\& \frac{1}{d_i}=-\left(\frac{1}{20 \mathrm{~cm}}+\frac{1}{64 \mathrm{~cm}}\right) \\& \text { or } \\& d_i=-15 \mathrm{~cm}\end{aligned}$$[/tex]
Negative sign indicates that the image is virtual and formed behind the mirror.
Let, [tex]$h_i$[/tex] be the height of the image of the nose.
The magnification formula is given by:
[tex]m=-\frac{d_i}{d_o}=\frac{h_i}{h_o}$$[/tex]
we have
- [tex]$d_o=64 \mathrm{~cm}$[/tex]
- [tex]$d_i=-15 \mathrm{~cm}$[/tex]
- [tex]$h_o=5 \mathrm{~cm}$[/tex]
Plugging in the values, we get:
[tex]$$-\left(\frac{-15 \mathrm{~cm}}{64 \mathrm{~cm}}\right)=\frac{h_i}{5 \mathrm{~cm}}$$[/tex]
or
[tex]$$h_i=\frac{15 \times 5}{64} \mathrm{~cm}$$[/tex]
or
[tex]$$h_i=1.2 \mathrm{~cm}$$[/tex]
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(a) If a metal block(initially at room temperature, which we assume is 22°C in this case) with a mass of 150g were dropped from a height of 6 m into 250g of water (also initially at room temperature) in a container, what would be the change in the temperature of the water?
For simplicity, assume in this case that the container does not absorb any heat. Use the conversion relation 1 cal = 4.186 Joule in your calculations.
(b) List the various kinds of energies that are Involved in this interaction(e.g. heat, kinetic energy, etcetera).
(c) What caused the change in the water temperature? Explain your reasoning.
a) The change in temperature of water is 0.0084°C.
b) The potential energy is transformed into kinetic energy, which is ultimately transformed into water heat.
c) The metal lost energy as a result of the friction created by the metal's motion inside the water, and this energy was then transformed to heat energy to raise the temperature of the water.
What is kinetic energy?
Kinetic energy is a type of energy that a moving object or particle experiences. When an item undergoes work—the transfer of energy—by being subjected to a net force, it accelerates and acquires kinetic energy. A moving object or particle's kinetic energy, which depends on both mass and speed, is one of its properties. The type of motion could be vibration, rotation on an axis, translation (or travel along a path from one place to another), or any combination of these.
Given,
Potential energy which is lost by the metal through the height, h
= 6m
We know,
PE = mgh
= 0.15 × 9.8 × 6 = 8.82 J
This is the energy used to heat up the water,
So, 8.82 = M × C × dT
Where,
M = 0.25 kg
C = 4186 J/kg/C
dT = Change in temperature of water
= T-22
So,
0.25 × 4186 × (T-22) = 8.82
T = 22.0084°C
Hence, The change in temperature is 0.0084°C.
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find the speed of light in each of the following materials. (a) cubic zirconia m/s (b) sodium chloride m/s (c) polystyrene m/s
Speed of light in Cubic zirconia, v = 1.36 x 10⁸ m/s
Speed of light in sodium chloride v =1.94 x 10⁸ m/s
Speed of light in polystyrene v =1..89 x 10⁸ m/s,explained clearly in below attached picture.
Zirconium dioxide exists in the cubic crystalline form known as cubic zirconia (CZ) (ZrO2). The synthetic material may be produced in a wide range of hues, although it is typically hard and colorless. Zircon, a zirconium silicate, should not be confused with it (ZrSiO4). It is occasionally mistakenly referred to as cubic zirconium.
Sodium chloride, generally known as salt, is an ionic substance with the chemical formula NaCl, denoting a 1:1 ratio of sodium and chloride ions. Sea salt, however, also contains other chemical salts. The molar weights of 39.34 g Na and 60.66 g Cl in 100 g of NaCl are 22.99 and 35.45 g/mol, respectively.
A synthetic polymer known as polystyrene is created from the monomers of the aromatic hydrocarbon styrene. Solid or foamed polystyrene are both possible. Polystyrene for general use is transparent, rigid, and brittle. Per unit weight, it is a reasonably priced resin. It has a relatively low melting point and a weak barrier to oxygen and water vapor.
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what is the magnitude of the acceleration of a skydiver who is currently falling at one-fifth his eventual terminal speed?
The magnitude of the acceleration of the skydiver will be 9.4m/s²
What is Acceleration?Acceleration is the rate of change in velocity.
It involves a change in speed and direction. When acceleration involves a change in speed only there is; Positive acceleration which occurs when an object speeds up. Negative acceleration occurs when an object slows down. Acceleration is a change of velocity over a period of time, expressed by the equation below.
A=Δv/t
At terminal velocity v, acceleration;
a = g
where,
g = Acceleration due to gravity (9.8m/s²)
ma = mg - m[tex](\frac{1}{2}) ^{2}[/tex]g
a = g(1 - [tex]\frac{1}{25}[/tex])
a = [tex]\frac{24}{25}[/tex]g
a = [tex]\frac{24}{25}[/tex] x 9.8
a = 9.4m/s²
The acceleration of the skydiver who is currently falling at one-fifth his eventual terminal speed is 9.4m/s²
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Refer to the following circuit. We have RG1 = 600 k2, RG2 = 300 k, Rp = 2.2 k2, RS = 1.2 k2, Vt = 0.4 V, kn = 1 mA/V, and Vpp = 9V. VDD 3R (a) If RG2 is short, find Vp and Vs. (10 points) (b) If Rs is short, find Vp and Vs. (10 points) (c) If Rp is short, find Vs. (10 points) (d) If RG1 and Rp are both short, find Vs. (10 points) (e) If RG1 and Rs are both short, find VD. (10 points) (f) If RG2 is open, and Rp is short, find Vp. (10 points)
(a) If [tex]R_{G_{2} }[/tex] is short,
[tex]V_{S} =0.52V[/tex]
[tex]V_{P} =8.04V[/tex]
(b) If [tex]R_{S}[/tex] is short,
[tex]V_{S} =0V[/tex]
[tex]V_{P}=1.564V[/tex]
(c) If [tex]R_{P}[/tex] is short,
[tex]V_{S} =1.764V[/tex]
(d) If [tex]R_{G_{1} }[/tex] and [tex]R_{P}[/tex] are both short,
[tex]V_{S} =5.55V[/tex]
Given,
[tex]R_{G_{1} } =600K[/tex] [tex]R_{G_{2} } =300K[/tex]
[tex]R_{D} =2.2K[/tex] [tex]R_{S} =1.2K[/tex]
[tex]V_{t} =0.4V[/tex]
(a) If [tex]R_{G_{2} }[/tex] is short,
[tex]V_{G} =0V[/tex]
[tex]V_{GS} = V_{G} -V_{S}[/tex]
[tex]V_{GS} =0-I_{P}R_{S}[/tex]
[tex]V_{P}=9-I_{P}R_{D } = 9-(0.43*10^{-3} )(2.2K)[/tex]
[tex]V_{P}=8.04V[/tex]
And,
[tex]V_{S} = I_{P} R_{S}=(0.43*10^{-3} )(1.2K)[/tex]
[tex]V_{S} ==0.52V[/tex]
Hence,
[tex]V_{S} =0.52V[/tex]
[tex]V_{P} =8.04V[/tex]
(b) If [tex]R_{S}[/tex] is short,
[tex]V_{G} =\frac{300K}{300K+600K} (9)[/tex]
[tex]V_{G} =3V[/tex]
∵ [tex]V_{S} =0V[/tex]
∴ [tex]V_{G{S} } =3V[/tex]
[tex]I_{P} =\frac{K}{2} [3.04]^2=\frac{6.76}{2} mA=3.38mA[/tex]
[tex]V_{P} =9-({3.38mA} )(2.2K)=1.564V[/tex]
Hence,
[tex]V_{S} =0V[/tex]
[tex]V_{P}=1.564V[/tex]
(c) If [tex]R_{P}[/tex] is short,
[tex]V_{P} =9V[/tex]
[tex]V_{S} =I_{P} R_{S }[/tex]
[tex]V_{G}=3V[/tex]
[tex]I_{P} =\frac{1mA}{2} [(3-(1.2K)I_{P} )-0.4]^{2}[/tex]
[tex]I_{P}=1.47mA[/tex]
∴ [tex]V_{S} =I_{P}(1.2K)[/tex]
[tex]V_{S} =1.764V[/tex]
Hence,
[tex]V_{S} =1.764V[/tex]
(d) If [tex]R_{G_{1} }[/tex] and [tex]R_{P}[/tex] are both short,
[tex]V_{G}=9V[/tex]
[tex]V_{S} =I_{P}R_{S}[/tex]
[tex]I_{P} =\frac{1mA}{2} [(9-(1.2K)I_{P} )-0.4]^{2}[/tex]
[tex]I_{P} =4.63mA[/tex]
∴ [tex]V_{S} =I_{P}R_{S}=(4.63mA)(1.2K)[/tex]
[tex]V_{S} =5.55V[/tex]
Hence,
[tex]V_{S} =5.55V[/tex]
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Miguel (m=72) and Fernando (89 kg) board the bumper cars at the local carnival. Miguel is moving at a velocity of 4 m/s when he rear-ends Fernando who is at rest in his path. Fernando and his 125-kg car lunge forward at 2 m/s. Determine the post-collision velocity of Miguel and his 125-kg car.
The post-collision velocity of miguel and his car turns out to be 10 m/s
determining the collision?
A collision in physics is any situation in which two or more objects rapidly exert force on each other. Despite the fact that the most common usage of the word "collision" refers to situations in which two or more objects collide violently, the scientific usage of the word makes no assumptions. so.
Here are some examples of physical encounters that scientists might classify as collisions:
An insect's leg is said to hit a leaf as it falls on it.
Each contact of a cat's paw with the ground when crossing a lawn is considered a collision, as is every contact of a cat's fur with a blade of grass.
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1. a visible half-circle first-quarter moon 2. darkest phase of the moon full moon 3. when the the earth is between the sun and the moon 29 1/2 days 4. this is a measurement of how far the moon advances each day in orbit 13 degrees 5. the time the earth must rotate to return to same position relative to the moon new moon
First-quarter moon, New moon, Full moon, 13 degrees, 29 1/2 days. A moon can be defined as the natural satellite of planet earth.
An astronomical body that orbits a planet, dwarf planet, or minor body of the Solar System is referred to as a natural satellite most commonly (or sometimes another natural satellite). The term "moon" is a slang term that originated with the name of the Earth's moon for natural satellites.
There are 207 natural satellites that are known to exist in the Solar System's six planetary satellite systems. Orcus, Pluto, Haumea, Quaoar, Makemake, Gonggong, and Eris are seven objects that are frequently referred to as dwarf planets by astronomers and are also known to have natural satellites. As of November 2021, there are 442 more minor planets that are known to have natural satellites.
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Which of the statements best describes distance and displacement?
A. distance and displacement both have direction.
B. distance and displacement both have no direction.
C. distance has no direction while displacement has.
D. distance has direction while displacement don't have.
The phrases that best express separation and movement are those. A. Displacement and distance both have a direction. (Select A).
How do people behave when they are displace?Transferring unfavorable emotions from one item or person to another is referred to as displacement and is a defensive tactic. To "take out" their rage on a family member, for instance, a person can yell at them if they are upset with their job.
An alternative term for displacement is...Replace, supersede, and supplant are some frequent alternatives to the word "displace." While all of these phrases refer to "putting out of a normal or suitable position or into the place of another. Thousand had been displaced by fighting.
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Based on everything you have learned about the formation of our solar system, which of the following statements is probably not true?
Other solar systems will also have planets in the two basic categories of terrestrial and jovian.
Only a tiny percentage of stars are surrounded by spinning disks of gas during their formation.
Other planetary systems will have far more numerous asteroids and comets than actual planets.
Planets always tend to orbit their star in the same direction and approximately the same plane.
The second statement is not true.
what is solar system?
We live on a planet that is part of the Milky Way galaxy's outer spiral arm.
Our solar system is made up of the Sun, our star, and everything gravitationally bound to it, such as the moons, planets, and dwarf planets such as Pluto, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
The way the solar system formed is what determines the positioning of the planets and other celestial objects in our solar system. The solar system's early years saw only stony material capable of withstanding the heat closest to the Sun. Since terrestrial planets, the first four planets in the solar system are also known as these. All of them have stony, sturdy, and tiny exteriors.
Because of how our solar system developed, the planets and other celestial bodies are in a specific sequence and configuration. Only rocky material could tolerate the heat when the solar system was young because it was closest to the Sun. They are all small and have stony, solid surfaces.
A very small fraction of newly formed stars is encircled by gas spinning discs. This statement is not true.
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what is the famous title of senen bacani
Senen Bacani is an entrepreneur, the CEO of La Fuerta Inc which is one of the largest exporters of bananas in Philippines.
Who is Senen Bacani?Senen Bacani was the formal sectary of Agriculture to president Corazon Aquino and during that time he visited many Philippines province and realize how poor people struggle to fend for their families and remember how his father who was a doctor received farm produce from his patient, appreciating him for medical care they received seeing the need of the of the rural people, has compelled him to work for shifts in policy and programs as the secretary and later in 1993 after working for president Aquino administration, he establish a business in agriculture to provide employment and to alleviate poverty in the rural areas Mostly in Mindanao, where he establish business venture that brought about not only employment but peace where there had been years of unemployment, crime and inter-ethnic conflict.
Senen Bacani presently head 9 different companies and presently occupies the position of Chairman for different Inc., in the Philippines.
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based on what we have discussed, which one of the following waves will lose amplitude as it propagates?
The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases.
What is amplitude?
A periodic variable's amplitude is a gauge of its change over a single period. A non-periodic signal's magnitude in relation to a standard value is its amplitude. There are several definitions of amplitude, which are all functions of the size of the disparities between the variable's extreme values.
The change in pressure that a sound wave causes when it is measured at a particular location is related to the amplitude of the wave. If the amplitude rises, the sound is heard as louder; if it falls, the sound is regarded as quieter.
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Why is the weight of earth is 1 by 6 of the weight of moon?; How do you calculate your weight on the moon and earth?; What is the mass of a 6 kg object when it is brought to the moon that has a gravity that is 1/8 of that on earth?; What is the weight of a 30 kg object on earth?
Answer:
Below
Explanation:
weight = mass * g <==g is less on the moon, so your weight is less on the moon
to calculate weight, you have to use the g of the planet you are on
The MASS does not change....it will be 6kg on the moon or earth
Weight of 30 kg on earth = 30 * g = 30 * 9.81 = 294 N
When force is applied for some distance What is that called?; When a force acting on an object moves it across a distance is called?; What is the transfer of energy that occurs when a force makes an object move?; What is the transfer of energy accomplished by a force moving a mass some distance against resistance?
When force is applied for some distance, it is called work done, and When force acting on an object moves it across a distance is called work done.
When moving an object over a distance, an external force must direct at least a portion of its force in the direction of the displacement. This is referred to as work done in physics. If the force acting along the path is constant, work can be calculated by multiplying the length of the path by the force's component. The work W is mathematically defined as the product of the force f and the distance h, or W = mgh. The work is W = mas if the force is applied at an angle to the displacement.
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Adaptations acquired during altitude exposure dissipate within __________ after returning to sea level.
Adaptations acquired during altitude exposure dissipate within 2 -3 weeks after returning to sea level.
High altitude (HA) hikers climb the heights of mountains for a variety of reasons, such as hiking, mountaineering, mining, scientific pursuits, and military duties. The number of visitors to the mountains has increased noticeably in recent years due to improvements in communication, logistics and medical care available at HA sites.
However, in such extreme conditions, the body's normal physiology is altered and consequently the body tends to acclimatize to resume its normal functioning. Normal physiological processes of altitude acclimation usually include hyperventilation, cardioacceleration, and increases in red blood cell count, hemoglobin (Hb), and 2,3-bisphosphoglyceric acid levels. These physiological manifestations assist in the dissociation of oxygen from oxygenated hemoglobin (HbO2), so that more oxygen is delivered to tissues for use by mitochondrial enzymes.
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Consider the following statement: The magnitude of the buoyant force is equal to the weight of fluid displaced by the object. Under what circumstances is this statement true? a. for every object submerged partially or completely in a fluid b. only for an object that floats c. only for an object that sinks d. for no object submerged in a fluid
The amount of fluid the object displaces equals the buoyant force's magnitude.This really is true for any object that is partially or entirely submerged in a fluid.
Whatever happens to the an object when its weight and buoyant force are the same?The object can stay suspended at its current depth if the hydrostatic pressure is equal to its weight.Regardless of whether an object floats, falls, or is held in a liquid, the hydrostatic pressure is constantly at work.
How much of a force does buoyancy exert on an item submerged in fluid?The mass of the fluid that an object displaces determines the size of the buoyancy force acting on it.
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a mass is hung from a vertical spring and allowed to come to rest or its equilibrium position. the mass is then pulled down an additional 2.0 m and released. as the mass oscillates, it completes one full cycle in 6.0 s. using the given values, correctly identify the mass's amplitude, full range of vertical motion, frequency, and period. the full range of vertical motion is the distance between the maximum and minimum heights of the mass.
Full range of vertical motion is 4m.
Frequency is 0.6 Hz.
Amplitude is 2m.
What is Oscillation?
Oscillation is the process of any quantity or measure repeatedly varying about its equilibrium value in time. Another definition of oscillation is the periodic variation of a substance between two values or around its core value.
Given,
Amplitude, A = 2m
Time= 6 s
So, the full range of vertical motion is
= 2 × 2= 4m
We know,
Frequency is inversely proportional to time
∴ f = [tex]\frac{1}{T}[/tex] = [tex]\frac{1}{6}[/tex]
= 0.6 Hz
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a tenn watt heater is used to monatomic ideal gas at a constant pressure of during the process teh volum of gas increases by 23
According to the First law of Thermodynamics, the fraction of heat energy required is 3/5, for monoatomic ideal gas.
What is Ideal gas?An ideal gas is one in which there are no intermolecular attraction forces and all collisions between atoms or molecules are entirely elastic. Three state variables—absolute pressure (P), volume (V), and absolute temperature—can be used to describe an ideal gas (T). Kinetic theory can be used to infer their connection.
What is Thermodynamics?Thermodynamics is the study of changes that take place in a region of the universe that we refer to as the system; the rest of the universe is referred to as the surroundings. The system may be cut off from its environment by a physical or conceptual border.
Calculations:
The percentage of the heat energy given that raises the internal energy of an ideal monoatomic gas when it is heated at constant pressure is:
By the first law of thermodynamics
Q=U+W = f/2nRT+P∫dV= f/2nRT+PV
or Q= f/2nRT+nRT(∵PV=nRT)
= 3/2nRT+nRT= 5/2nRT
∴ Fraction of heat energy supplied = U/Q=
(3/2)nRT/(5/2)nRT = 3/5.
Hence, according to the First law of Thermodynamics, the fraction of heat energy required is 3/5, for monoatomic ideal gas.
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