Answer:
39 km/hr (rounded)
Explanation:
use the equation speed=distance/time
Answer:
Explanation:
3hrs 45mins = 3 3/4 hours or 15/4 hours
average speed = 145km/15/4 = 145 x 4/15 = 29 x 4/3 = 38.67 km/h
m/s = 5/18 km/h
38.67 x 5/18 = 10.74 m/s
While riding a bike, you convert chemical energy into kinetic energy. After pedaling for a certain time you have given yourself and the bike (a combined mass of 78 kg) a kinetic energy of 9,011 Joules. How fast are you going at that moment in m/s?
According to the question of kinetic energy, 15.4m/s fast you are going at that moment in m/s.
What is kinetic energy?
Kinetic energy is a form of energy that is associated with the motion of an object. It is the energy an object has due to its motion. Kinetic energy is present in all moving objects and is calculated by taking the mass of the object and multiplying it by the square of its velocity. Kinetic energy is a form of energy that can be transformed into other forms. For example, when a ball is dropped and bounces off the ground, it converts its kinetic energy into potential energy. Similarly, when an object is moving and then comes to a stop, its kinetic energy is converted into heat energy.
The kinetic energy can be calculated by the equation KE = 1/2mv2.
Therefore, v = √(2KE/m) = √(2*9011/78) = 15.4 m/s.
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The gravitational force between two objects is proportional to 1/R (and not as 1/R² ) where R is separation between them, then a particle in a circular orbit under such a force would have its orbital speed ν proportional toA. 1/R² B. R drajatC. R^1 D. 1/R
The correct answer is D. 1/R. This is because the gravitational force between two objects is proportional to 1/R, so the orbital speed of a particle in a circular orbit would also be proportional to 1/R.
What is gravitational force?Gravitational force is the force of attraction between two objects with mass. It is a natural phenomenon that exists between all objects in the universe and is one of the four fundamental forces of nature, along with the strong and weak nuclear forces and electromagnetic force. Gravitational force acts instantaneously across large distances and is equal in magnitude and opposite in direction for the two objects involved. It is the weakest of the four forces, but it has the longest range, acting on all matter, even particles and particles of light.
This is because the particle is constantly experiencing the same gravitational force, so the magnitude of the orbital speed must be equal to the magnitude of that force divided by the mass of the particle. Therefore, the orbital speed of the particle is proportional to 1/R.
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What type of property can be observed without destroying the substance?
Physical properties such as color, shape, size, weight, odor, melting point, boiling point, and density can be observed without destroying the substance.
What is Physical properties?Physical properties are characteristics of a substance that can be observed and measured without changing the substance's chemical composition. Examples of physical properties include color, density, hardness, melting point, boiling point, and electrical conductivity. These properties are determined through experiments and/or observations. Physical properties can be used to identify and classify a material. They can also be used to differentiate between different forms of the same material, such as different allotropes of the same element. Physical properties are also important for understanding how materials interact with each other and how they respond to the environment.
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Anna holds a 14 D magnifier directly in front of her eye to get a close look at a 19-mm -diameter penny. Assume a typical 25 cm near point and a distance of 1.7 cm between the lens and the retina.
What is the closest possible distance that she can hold the coin to have it appear in focus?
Express your answer with the appropriate units.
The closest possible distance that she can hold the coin to have it appear in focus is 5.44 cm.
Given:
Magnifier lens power = 14 D
Near point = 25 cm
Distance between lens and retina = 1.7 cm
Diameter of the penny = 19 mm
The focal length is:
f = 1÷D
f = 1 ÷ 14 = 7.1 cm
The image distance is:
v = -(near point - Distance between lens and retina)
v = - (25 - 1.7)
v = - 23.3 cm
From lens formulae:
1/f = 1/u + 1/v
u = vf/(v-f)
u = -23.3×7.1÷(-23.3 - 7.1)
u = 5.44 cm
Hence, the closest possible distance that she can hold the coin to have it appear in focus is 5.44 cm.
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speedometer readings for a motorcycle at 12-second intervals are given in the table. (a) estimate the distance traveled by the motorcycle during this time period using the velocities at the beginning of the time intervals. (b) give another estimate using the velocities at the end of the time periods. (c) are your estimates in parts (a) and (b) upper and lower estimates? explain.
B) Estimate using the velocities at the end of the time intervals
Total distance traveled = 5 m/s x 12 s + 7 m/s x 12 s + 9 m/s x 12 s = 228 m
What is velocities ?
Velocities are the speeds at which objects move. It is a measure of an object's speed and direction of motion, and is expressed in units such as meters per second (m/s), kilometers per hour (km/h), miles per hour (mph) or knots (kts).
Velocity is a vector quantity, meaning that it has both magnitude and direction. It is important to note that velocity is not the same as speed, which is a scalar quantity and does not have a direction.
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how can you show that electric currents create magnetic fields? check all that apply. how can you show that electric currents create magnetic fields?check all that apply. if you place a magnet near a closed circuit with current flowing, it will exert a force on the circuit wires. if you place a coil of wire near a magnet and direct a current through the coil, it will exert a force on the magnet, depending on its orientation. if you place two wires with currents perpendicular to each other, they will be attracted each other. if you position a charge near a wire with a current, it will be attracted or repelled by the wire.
The magnetic field created by a current-carrying wire will exert force on the wire if a magnet and wire are combined, hence the statement is true.
Describe a force.The word "force" has a clear definition. At this stage, calling a force a pull or a push is totally appropriate. A force is not a property an object "has though" or that it "includes." One thing encounters a force from another. There is no differentiation between living and non-living objects in the conception of either a force.
How does balance force work?symmetrical forces Forces that are equal in size and opposing in direction are said to be balanced forces. Equilibrium is regarded as a condition of equal forces. When forces are in equilibrium.
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a ferry boat is 4.00 m wide and 6.00 m long. when a large loaded truck pulls onto it, it sinks 4.00 cm in the water. what is the weight of the truck? (9.41 x 103 n)
The weight of the truck is 11100N
Upthrust, often known as buoyancy, is an upward force applied by a fluid against the weight of an object that is partially or completely submerged. A fluid column's pressure rises with depth due to the weight of the surrounding fluid. As a result, an object whose average density is higher than the fluid it is submerged in has a tendency to sink. The force can keep an object floating if it is less dense than the liquid. Only a reference frame that is not inertial and either has a gravitational field or is accelerating due to an external force that defines a "downward" direction can experience this.
The weight of the truck will be obtained by solving for the buoyant force..
[tex]F_{b}[/tex]=[tex]\rho\: V_{submerged}\:g[/tex]
the volume submerged=[tex]4.00m\:\times6.00m\times\:0.047m\:=1.13m^{3}[/tex]
and the density of water is 1000kg/[tex]m^{3}[/tex]
F=[tex]1000kg/m^{3}\:\times1.13m^{3}\:\times 9.8m/s^{2}[/tex]=11100N
The vertical forces are the weight of the truck (you know it's the truck and not the boat itself because the boat submerges only after the truck's on it) and the buoyant force. The boat is not accelerating up or down, so:
[tex]F_{b}[/tex] -[tex]F_{w}[/tex]=0
[tex]F_{b}[/tex]=[tex]F_{w}[/tex]
[tex]F_{w}[/tex]=11100N.
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Consider this system at equilibrium. A(aq) B(aq) Delta H = +550 kJ/mol What can be said about Q and K immediately after an increase in temperature? Q > K because Q increased Q > K because K decreased O < K because Q decreased Q < K because K increased Q = K because neither changed
According to the Chemical equilibrium Q<K because K increased,Shift Right.
The reaction is as follows:
A (aq) [tex]\leftrightarrow[/tex] B (aq)
Given AH = +550 kJ/mol. It indicates that the reaction is endothermic
For an endothermic reaction, if temperature increases the equilibrium
shifts towards the right side (Product side). Which means K is greater than 1.
Thus, Q< K because K is increased.
Chemical equilibrium refers to the situation in a chemical reaction where both the reactants and products are present in concentrations that have no further tendency to change over time, preventing any discernible change in the system's properties. At equilibrium, the forward and reverse reactions are proceeding at the same rate
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the initial velocity of a ball thrown horizontally from the window of a building is 25 m/s. if the ball hits the street below in 3.5 s, then what was the height of the window? (g
If the ball hits the street below in 3.5 s, then 20m was the height of the window.
What is height ?
Height can refer to a person's or an object's vertical extension (how "tall" they are), their vertical location, or both (how "high" a point is). For instance, "That building is 50 metres high," or "An aeroplane flies at a height of about 10,000 metres."
What is velocity ?
The vectorial expression of velocity is the motion of a particle or object with regard to time. The standard unit of velocity magnitude is the metre per second (m/s), which is also known as speed.
Therefore, If the ball hits the street below in 3.5 s, then 20m was the height of the window.
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universe, provides a constant outward force that does not dilute as the universe expands. Pitted against this relentless push is the gravitational pull from the rest of the matter and energy in the universe. Early on, the universe was much denser than it is today
When scientists refer to the cosmos as expanding, they indicate that it has been expanding ever since the Big Bang, when the universe first began. Outside of our own galaxy, the galaxies are veering away from us.
What three sorts of universes are there?The universe can have one of three fundamental forms: a flat one with Euclidean or zero curvature, a spherical one with positive curvature, or an open one with hyperbolic curvature (negative curvature).
What is bigger than the universe?No, the universe contains every galaxy and solar system known to us. While the universe as a whole is composed of billions of galaxies, the Milky Way Galaxy alone includes hundreds of billions of stars, including our Sun.
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a roller coaster makes a vertical loop (without stopping) in which it is upside down at the top. will your sunglasses fall out of your pocket? group of answer choices no yes. you would need more information.
No, sunglasses in a pocket will stay in the pocket when going through a vertical loop on a roller coaster. The sunglasses will experience the same force.
What is the centripetal force?When a roller coaster goes through a vertical loop, the riders experience a force known as centripetal force, which pushes them towards the center of the loop. This force is what keeps the riders in their seats and prevents them from falling out of the coaster. The same force also applies to objects in a rider's pockets, such as sunglasses. The centripetal force pushes the sunglasses towards the center of the loop and against the walls of the pocket, keeping them securely in place.
What is roller coaster?Additionally, most roller coasters are designed with safety in mind, and the pockets on the seats and restraints are typically deep enough to keep smaller objects from falling out. So even if the sunglasses are not hold tightly by the centripetal force, the deep pockets will prevent them from falling out.
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Calculate the work W done by the gas during process 1→2. Express your answer in terms of p0 and V0.
The work done by the gas during process 1→2 can be expressed in terms of p0 and V0 as W = p0(V2 - V0).
What is gas?Gas is a form of energy that is created from the combination of certain elements. It is a form of fuel that is often used to power engines, heat homes, and cook food. It is also used in many industrial processes and is a major component of both natural gas and petroleum. Gas is made up of a combination of hydrocarbons, which are molecules composed of hydrogen and carbon atoms. Depending on the type of gas, the molecules may also contain oxygen, nitrogen, and other elements. Natural gas is found underground and is composed mostly of methane, while petroleum gas is a combination of natural gas and oil.
The work done by the gas during process 1→2 is given by the equation W = p0(V2 - V1). Since we are given the initial state (p0, V0) and the final state (p2, V2), we can calculate the work done by the gas:
W = p0(V2 - V0)
Therefore, the work done by the gas during process 1→2 can be expressed in terms of p0 and V0 as W = p0(V2 - V0).
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dave throws a ball upward with an initial velocity of 23 ft per second. the ball initially leaves his hand 5ft. above the ground and eventually falls back the ground. in parys (a)-(d), you will answer the following questions: what is the maximum height reached by the ball? after how many seconds will the ball reach its maximum height? how long will it take to reach the ground?
The maximum height reached by the ball is 5.75ft , the time taken by the ball to reach is 0.71 sec and the time taken to reach the ground is 0.90 sec.
What is law of gravity?
Every particle in the universe attracts every other particle with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between their centers, according to Newton's law of universal gravitation.
a) The maximum height reached by the ball can be calculated using the formula: h = vi^2/2g + h0, where h is the maximum height, vi is the initial velocity (23 ft/s), g is the acceleration due to gravity (-32 ft/s^2), and h0 is the initial height (5 ft). Plugging in these values, we get:
h = (23^2)/(2*-32) + 5 = 5.75 ft.
b) The time it takes for the ball to reach its maximum height can be calculated using the formula: t = -vi/g, where t is the time and vi and g have the same meanings as above. Plugging in the values, we get:
t = -23/(-32) = 0.71875 seconds.
c) The time it takes for the ball to fall back to the ground can be calculated using the formula: t = 2h/g, where h is the maximum height and g has the same meaning as above. Plugging in the values, we get:
t = 25.75/(-32) = 0.90625 seconds.
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Ava is looking to purchase a new TV. She is looking at one that states it is 55 inches. TV screens are measured by the TV screen diagonal. If the TV screen measures 27 inches high, which is the correct equation to use to find the width, w, of the TV
Hypotenuse squared is equal to height squared plus base squared, which is 3025 - 729 = 2296 b, or 47.9 inches.
How is the hypotenuse located?two equal triangle legs are provided.
Calculate calculated hypotenuse from the sides of a right triangle using the Pythagorean theorem. Sum of squares is represented by the square root c = (a2 + b2).
When using one side and two sides, “ how did you find the hypotenuse?If you own an angle and its opposite side, you may calculate the hypotenuse by dividing the length of the opposing side by sin(). To find the value of the side next to the angle, you can also divide it length by tan().
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for the second overtone standing wave the node-to-node distance is 8.00 cm . what is the length of the string? express your answer with the appropriate units.
The string is 24 cm long. The node-to-node spacing during the second overtone standing wave is 8.00 cm.
What is standing wave?Two waves with the same frequency and amplitude that are traveling in opposing directions and interfere with one another create a standing wave. It has some places (referred to as nodes) where the amplitude is consistently zero and other spots (referred to as antinodes) where the amplitude fluctuates most intensely.
In order to produce a tone, a standing wave in a musical instrument enables constancy and predictability of the wave. A standing wave is "caught" by resonance in a resonating chamber in wind instruments and in string instruments.
Node to node distance, d is 8 cm.
n = 3
length, L = nλ/2
L = 3 × 8
∴ L = 24 cm
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ice has formed on a shallow pond and a steady state has been reached, with the air above the ice at -5.0oc and the bottom of the pond at 4.0oc. if the total depth of ice water is 1.4 m, how thick is the ice? take the thermal conductivity of ice as 1.6 wm-1k-1 and that of water as 0.50 wm-1k-1.
Ice has formed on the surface of a, and a temperature balance has been achieved between the air above the ice (-5.0 °C) and the bottom of the pond (4.0 °C). The earth's temperature is = 296.946K.
What does being steady mean?adjective. When you describe someone as steady, you're referring to their dependability and common sense. He was powerful and stable, in contrast to other people she had met. reliable, wise, reasonable, and fair are synonyms for additional phrases for constant
Calculation
r₁= 0.05m
r₂= 0.08m
Tn =Ti = 77K
Ki = 0.0035 Wm-1K-1
Kg = 1 Wm-1K-1
Z= 2m
Now,
The outer type temperature (Skin temperature pipe)
Q = T₀ -T₁/ln (r2/r1)/2πKi = 2πKi T0 -T1/ln (r2/r1)
Thus,
10 w/m = 2π * 0.0035 = T0 -77/ln 0.08/0.05
⇒ T₀ -77 = 231.72
T₀= 290.72K
The shape factor between the cylinder and he ground
S = 2πL/ln 4z/D
where L = length of pipe
D = outer layer of pipe
S = 2π * 1/4 *2/ 2 * 0.08 = 1.606m
The heat gained in the pipe is = S * Kg * (Tg- T₀)
(10* 1) = 1.606 * 1* (Tg- 290.72)
Tg - 290.72 = 6.2266
Tg = 296.946K
Therefore the surface temperature to the ground is 296.946K
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In 1995, Karine Dubouchet of France reached a record speed in downhill skiing. If Dubouchet’s mass was 51 kg, her kinetic energy would have been 99600 J. What was her speed?
The kinetic energy of Karine Dubouchet of France is 99600, her mass was 51kg. So, her speed at that time will be 62.49m/s.
What is Kinetic energy?Kinetic energy is the energy which is present in the body of an object which is under motion. This energy is converted into potential energy when the object comes at rest. The SI unit of Kinetic energy is Joules (J). It is directly proportional to the mass and velocity of the object.
KE = 1/2 × m × v²
where, KE = Kinetic energy of the body,
m = mass of the body,
v = velocity of the body
Here, the Kinetic Energy is 99600 Joules and mass is 51 kg. Therefore, the speed or velocity of the object can be calculated as:
KE = 1/2 × m × v²
2KE/m = v²
√2KE/m = v
√2×99600/51 = v
√199,200/51 = v
√3,905.9 = v
v = 62.49m/s
Therefore, the speed or velocity of Karine Dubouchet is 62.49m/s.
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When the surroundings did 75 kj of work on a system, its internal energy increased by 45 kj. how much energy did the system gain or lose as heat?
The required amount of heat energy lost in a system when surroundings performed certain amount of work and when internal energy is increased is calculated to be - 30 kJ.
Given that,
Work done on the system w = 75 kJ
Internal energy ΔU is increased by 45 kJ
Heat energy q lost or gained by the system = ?
From the first law of thermodynamics, mathematically, expression can be written as, ΔU = q + w
q = ΔU - w = 45 kJ - 75 kJ = - 30 kJ
The negative sign indicates that the heat energy is lost.
Thus, the amount of heat energy lost in the system is - 30 kJ.
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A point charge qı = -4.00 nC is at the point x = 0.60 m, y = 0.80 m, and a second charge q2 = +6.00 nC is at the point x = 0.60 m, y = 0
Calculate the direction of the net electric field at the origin due to these two point charges.
φ = .... ?
The direction of the net electric field at the origin due to these two point charges is 77.4°.
What is electric field?The physical field that encircles electrically charged particles and exerts force on all other charged particles with in field, either attracting or repelling them, is known as an electric field. It also describes the physical field of a system of charged particles. Electric charges and time-varying electric currents are the basis of electric fields. The electromagnetic field, one of the four basic interactions of nature, manifests itself in both electric and magnetic fields.
Electric fields play a significant role in many branches of physics and are used in electrical engineering. For instance, in atomic physics and chemistry, the electric field acts as the attractive force that holds the atomic nucleus and electrons together in atoms. It is also the force that causes atoms to bond chemically to form molecules.
Part A
The equation for the magnitude of the electric field at the origin for both points is given by:
[tex]$E=\frac{k q}{r^2}[/tex]
[tex]$$Substituting in the appropriate values for each charge yields$$E_1=\frac{\left(8.99 \times 10^9\right)\left(4 \times 10^{-9}\right)}{\left.\sqrt{0.6^2+0.8^2}\right)^2}=35.9 \mathrm{~N} / \mathrm{C}$$The charge is located at an angle of $\theta=\tan ^{-1} \frac{0.8}{0.6}=53.1^{\circ}$ this means $\mathrm{i}$ and $\mathrm{j}$ components for $E_1$$$\begin{aligned}& E_{1 i}=35.9 \cos 53.1=21.5 i \mathrm{~N} / \mathrm{C} \\& E_{1 j}=35.9 \sin 53.1=28.7 j \mathrm{~N} / \mathrm{C}\end{aligned}[/tex]
[tex]$$Since $E_2$ is directly on the axis it can be calculated as:$$E_2=\frac{\left(8.99 \times 10^9\right)\left(6 \times 10^{-9}\right)}{\left.\sqrt{0.6^2}\right)^2}=149.8 \mathrm{i} \mathrm{N} / \mathrm{C}$$The net field is$$E=E_1+E_2=-21.5 i+28.7 j+149.8 i=128.3 i+28.7 j$$The magnitude is thus:$$\sqrt{128.3^2+28.7^2}=131.4 \mathrm{~N} / \mathrm{C}$$Part BThe direction is:$$\theta=\tan ^{-1} \frac{128.3}{28.7}=77.4^{\circ}$$[/tex]
Thus, the direction of the net electric field at the origin due to these two point charges is 77.4°.
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As the frequency of a wave increases on the electromagnetic spectrum, what happens to the wave's energy
As the frequency of a wave increases on the electromagnetic spectrum, the wave's energy increases.
What is electromagnetic spectrum?The electromagnetic spectrum is a term used to describe the entire range of frequencies of electromagnetic radiation, from the longest wavelength radio waves to the shortest wavelength gamma rays. It is composed of various types of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays. Electromagnetic radiation can travel through space and can be absorbed, reflected, or refracted by various objects. Electromagnetic radiation is used in various fields such as communications, astronomy, medicine, and industry. For example, radio waves are used for communication, microwaves are used for cooking food, infrared radiation is used for medical imaging, visible light is used for sight, ultraviolet radiation is used for disinfection, x-rays are used for medical imaging and gamma rays are used for cancer treatment. Electromagnetic radiation has both electric and magnetic fields that are perpendicular to each other and to the direction of propagation.
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Please help, thank you!
Arevolving space station has radius of 250 m and a centripetal acceleration of 0.0048 m/s. What is the linear velocity of the outside edge of the station?
0.076 m/s
300 m/s
11m/s
230 m/s
The linear velocity of the outside edge of the station is 1.1 m/s.
How is the linear velocity determined?The equation for linear velocity is v = d/t, at which v stands for speed, d for distance, and t for time. The meter per seconds, or m/s, is the SI unit for linear velocity (ms-1). M0L1T-1 is the linear velocities dimensional formula.
The value of centripetal force is
F = mv^2/r
above equation as we know that m is the mass of the object rotating
Now as we know that
F = ma
where a is the acceleration
ma = mv^2/r
a = v^2/r
v= [tex]\sqrt{ar}[/tex]
= 1.1 m/s
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you can assume that all fluids you will reason about in this course are incompressible. what does incompressible mean? both the fluid's density and its pressure are constant the fluid's pressure is constant the fluid's density is constant
When a fluid's volume or density does not change with pressure, it is said to be incompressible.
A fluid is considered to be incompressible if its density is unaffected by changes in pressure. Real incompressible fluid does not exist. However, in many flow circumstances, the variations in density brought on by changes in the flow's pressure are quite slight. Treating the fluid as incompressible makes it much easier to solve fluid flow equations. When dealing with low-speed aerodynamics or other fluid dynamics situations, we frequently model flows as incompressible (generally with liquids). The density is typically assumed to be constant. This is yet another way of expressing the fluid's incompressibility and the limitless nature of c. (and Mach number is zero).
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In an experiment to create a pendulum, each member of the group measured the length of the string to be a slightly different value. How do we describe these small differences when reporting the length?
A.) Precision
B.) Accuracy
C.) Systematic Uncertainty
D.) Random Uncertainty
When the length of each member in an experiment to build a pendulum is measured using a separate value, the random uncertainty is what accounts for the little discrepancies in length reporting.
What exactly is random uncertainty?These are mistakes that are regularly made during an experiment due to poor design, an inherent flaw, or a constraint in the instrument. They could also be the result of subpar experimental methods.
Both a comprehensive quantification of these flaws and the improvement of experiment reliability by repetition are impossible. However, they can be enhanced by altering the experimental strategy, enhancing the measurement methods, etc.
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: what type of star is several thousand times brighter than the sun with a temperature that is much cooler than the sun? claim: i claim that the star would be classified as a main sequence star. evidence: the main sequence stars go across the hr diagram diagonally. there are main sequence stars that are thousands of times brighter and thousands of times dimmer than the sun. there are main sequence stars at all different temperatures. reasoning: the hr diagram is a model that we use to show how stars compare to each other. there are different types of stars. the type of star depends on how bright the star is, which is called luminosity, and how hot the star is which is shown as temperature in kelvin. write a rebuttal to marissa's conclusion. your rebuttal should include an alternative claim, sufficient evidence, and reasoning that explain why your alternative claim more correctly answers the guiding question. next, critique marissa's cer. what were the strengths and weaknesses of marissa's conclusion?
The most prevalent type of star in the universe is a red dwarf.These stars belong to the main-sequence, but because of their low mass, they are far colder than stars like the Sun.
Which star is many times brighter and hotter than the Sun?The second region contained the record-breaking star, R136a1.The star may have been 320 times as massive as the sun when it was born.It was discovered that several of the stars had surface temperatures over 40,000C, or more than seven time hotter than the sun.
Which sort of star has a 4000K surface temperature and a Sun-like luminosity of 1000 times higher?an ice giant.The sun will start combining helium when it runs out of energy and is unable to longer fusing hydrogen inside its core, shining with a luminance of 1000 L but with a temp of 4000 K.
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an uneven arrangement of electrons and protons on a circular arc of radius with angles what are the magnitude and direction of the net electric field produced at the center of the axis
When there is an uneven arrangement of electrons and protons on a circular arc of radius, the net electric field produced at the center of the axis will depend on the magnitude and distribution of the charges.
The net electric field at the center of the axis is given by the vector sum of the electric fields produced by each individual charge. The magnitude of the net electric field is given by Coulomb's law. The direction of the net electric field is given by the direction of the vector sum of the electric fields.
To calculate the magnitude and direction of the net electric field, it is necessary to know the magnitudes and locations of the charges on the circular arc, as well as the distance from the center of the axis to the charges.
It's also important to note that this is a complex calculation and it would require a detailed knowledge of the charge distribution and the geometry of the circular arc to make a precise calculation.
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Cadir is basting a roast turkey with a meat baster that creates a pressure of 9.980X10^4Pa when the plastic bulb is squueesed and released. If turkey juice rises 0.0900 m up the tube of the baster, what is the density of the juice?
The density of the juice is 113,151.9 kg/m³.
What is the density of the juice?
The density of the juice is calculated by applying the following formula.
The formula for the pressure of the juice is given as;
P = ρgh
ρ = P / gh
where;
ρ is the density of the juiceP is the pressure of the juiceh is the height of rise of the juiceg is acceleration due to gravityThe density of the juice is calculated as follows;
ρ = P / gh
ρ = ( 9.98 x 10⁴ Pa ) / ( 9.8 m/s² x 0.09 m )
ρ = 113,151.9 kg/m³
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which number is the systolic pressure and what is it measuring?
Systolic pressure is the top number in a blood pressure reading and it is usually measured in millimeters of mercury (mm Hg). It measures the pressure in the arteries when the heart beats and pumps blood out to the rest of the body.
What is Systolic pressure?Systolic blood pressure is the maximum pressure of blood in the arteries during a heartbeat. It is the top number in a blood pressure reading, usually written as two numbers separated by a slash. The systolic pressure is a measure of the force with which the heart pumps blood around the body and is the highest pressure reached in the arteries when the ventricles are squeezing. The systolic pressure is a measure of how much pressure is required to push the blood around the body and can be affected by lifestyle, age and other health factors.
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The motion of a particle given by x(t)=(25cm)cos(14t) , where t is in s. What is the first time the kinetic energy is twice the potential energy?
The first time the kinetic energy is twice the potential energy will be 0.04 sec.
Kinetic energy is the energy an object has as a result of motion. In order to accelerate an object, a force must be applied.To apply a force, we must exert effort. Energy is transmitted to the object once the work is accomplished, at which point it moves at a new, constant speed.
We know,
x(t) = A cos ωt
ω= 14
A = 25 cm
v(t) = [tex]\frac{Dx}{dt}[/tex]
= 24*14*sin(14t)
Potential energy= 0.5 ω² x² m
Kinetic Energy = 0.5 m v²
from condition : K.E = 2P.E
so, v(t)² = 2ω²x(t)²
solving t= 0.04 sec
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What is the relation of the colour with that of the capacity of the absorpttion of heat? Explain with an example.
Answer:
Explanation:
When an object appears of a certain color, when white light falls into it and illuminates it. It simply means that it is reflecting the light of that color and it has absorbed all other colors.
For example, the leaves are reflecting green light as it absorbs all other colors of light.
The more light the object absorbs, the more heat is absorbed since light is energy. If you consider it a color, black absorbs the most heat.
Another example is; You must have heard people saying don't wear black in the summers, it is because black color absorbs all wavelengths of light and reflects none.
Whereas, all the white-colored objects reflect all wavelengths of light and therefore absorb the least heat. Taking the earlier example, light-colored clothes are preferred to be worn in summer to stay cooler as they absorb the least amount of heat.
