The distance widens if there is no air resistance or an equal amount of air resistance. This is owing to the fact that, although having identical accelerations, Ball A's speed will always be different from Ball B's since Ball A has been accelerating for longer than Ball B by one second.
What is Acceleration?The rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.
What is Speed?A scalar quantity, speed is defined as the quantity of the change in an object's position over time or per unit of time.
Hence, although having identical accelerations, Ball A's speed will always be different from Ball B's since Ball A has been accelerating for longer than Ball B by one second.
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You put on sunglasses and looks at the outside view. The sky is a little dark, but the reflection from a pond is much darker. Why?
A. Pond reflection is polarized
B. The light outside has changed.
C. Sunglasses are not polarized.
D. Skylight is polarized.
When you put on sunglasses and looks at the outside view, the sky is a little dark, but the reflection from a pond is much darker because Pond reflection is polarized. Option (A) is correct.
What is polarization?In the field of physics, polarization is referred to as a phenomena brought on by the fact that electromagnetic radiation is a wave.
Moving across space, electric and magnetic fields interact to form light. Light waves vibrate electrically and magnetically in perpendicular to one another. The magnetic field and electric field both move perpendicular to one another in different directions.
As a result, the direction of motion is perpendicular to both the plane occupied by the electric field and the plane of the magnetic field that is perpendicular to it.
These magnetic and electric vibrations can take place on a variety of planes. Unpolarized light is a type of light wave that vibrates in more than one plane. The sun, a lamp, and a tube light are all examples of unpolarized light sources.
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What will be the gravitational force between two objects if?; What happens to the force of gravitational attraction between two small objects?; When the masses of two bodies are very small the gravitational force between them is?; Is the gravitational force between two objects the same?
The gravitational pressure among two objects is f
F=(Gm1, m2) /r^2 so force here is immediately proportional to the mass.
Since the gravitational force is inversely proportional to the rectangular separation distance between the two interacting gadgets, more separation distance will result in weaker gravitational forces. in order for two gadgets to be separated from every other, the force of gravitational enchantment between them also decreases.
The pressure of gravity relies upon without delay loads of the 2 objects, and inversely the rectangular gap between them. which means that the force of gravity increases with mass, but decreases with growing distance among gadgets.
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you cut one of these plasmids simultaneously with enzymes a and b, and obtain the following gel (cut product loaded in lane 1): Which plasmid is it that you cut?A. Plasmid 1B. Plasmid 2C. Plasmid 3D. Plasmid 4
The cuts on the plasmid are done via restriction enzymes which are also known as molecular scissors. (B) Plasmid 2 is the one that got cut by the restriction enzyme.
What is the Plasmid?A plasmid is a type of double-stranded, circular, tiny DNA molecule that differs from a cell's chromosomal DNA. Both bacterial and certain eukaryotic cells naturally contain plasmids. Plasmids frequently carry genes that give bacteria genetic advantages like antibiotic resistance.
What is the Restriction enzyme?An isolated bacterial protein known as a restriction enzyme cleaves DNA at sequence-specific locations to create DNA fragments with a known sequence at each end. For several laboratory techniques, such as genetic engineering and recombinant DNA technologies, restriction enzymes are essential.
Hence, the cuts on the plasmid are done via restriction enzymes which are also known as molecular scissors. (B) Plasmid 2 is the one that got cut by the restriction enzyme.
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find the tension in each cord in the following figure, if the weight of the suspended object is 100 n. (make a free body diagram).
T a = 573.77 N and T b = 702.7 N are the tensions in the system's cords A and B, respectively.
What is meant by tension?A rope, string, or cable that is stretched under an applied force develops a force known as a tension force in physics. In the opposite direction of the force imparted to the rope or cable, tension is exerted along its whole length. Other names for tension include stress, tensity, and tautness.
The force transferred through a rope, string, or wire when pushed by forces acting from opposite sides is referred to as tension. The tension force is applied along the entire length of the wire and exerts an equal amount of strain on the bodies at each end.
Something can stretch under tension. Something gets squeezed together through compression. Only materials having the ability to resist forces are useful. Similar to how water moves through a pipe, force moves through a material.
We have to solve the system of equations:
- T a × cos 60° + T b × sin 45° - 210 N = 0
- T a × sin 60° + Tb cos 45° = 0
------------------------------------------------------
- 1/2 T a + √2 / 2 T b = 210 N
- √3 / 2 T a + √ 2 / 2 T b = 0 / * ( - 1 )
---------------------------------------------------
- 1/2 T a + √2 / 2 T b = 210 N
√ 3 / 2 T a - √2 / 2 T b = 0
----------------------------------------
T a ( √3 / 2 - 1 / 2 ) = 210 N
0.366 T a = 210 N
T a = 210 N : 0.366
1 ) T a = 573.77 N
Ta × √3 / 2 = T b × √ 2 / 2
T b = ( 573.77 × 1.732 ) : 1.4142
2 ) T b = 702.7 N
The complete question is:
Find the tension in each cord in the figure if the weight of the suspended object is w = 210N
A) Find the tension in the cord A for system (b).
B) Find the tension in the cord B for system (b).
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(01.03 MC)
An object is moving 10 m/s to the south. After one minute, its moving at a rate of 15 m/s. Explain what type of motion this is describing. Then explain
whether this represents a scalar or vector quantity.
The type of motion that is being described is linear motion and it is vector quantity because it has direction.
What is linear type of motion?
A linear motion is a type of motion in which the displacement of the object is directly proportional to the speed and time of motion of the object.
Also this type of motion occurs in a straight line.
The formula for final velocity in a linear type of motion is given as;
v = u + at
where;
v is the final velocity of the objectu is the initial velocity of the objecta is the acceleration of the objectt is time of motion of the objectFrom the given statement, our equation becomes;
15 m/s = 10 m/s + 60a
Thus, the above equation shows final velocity formula which is a vector quantity.
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When a person sits in a chair they apply a force to the chair the chair?; When you sit in a chair your body exerts a downward force on the chair What is the reaction force?; What would happen if a person sat on a chair and the chair did not exert an equal force back?; Why is it that if you sit on a chair you do not fall to the ground?
When you sit on the chair, your body will exert a downward force and in reaction, the chair pushes up on your body.
What is a Reaction Force?
A building experiences a reaction force when it rests against another object. Calculating the reaction forces at the supports as a result of the forces operating on the beam is a necessary step in the analysis of a beam structure. The reaction forces can be calculated using a free body diagram of the entire beam.
Corrosion can be caused by reaction forces. For instance, due to the system's increased stiffness, reaction forces increase when bearing clearances are reduced from 350 mm to 150 mm.
According to the question, when the body will exert a downward force that is mg due to gravity, the chair will make a normal reaction force which will be equal to the force applied by the body on the chair.
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What is the frequency of a red light( red light has a wavelength of 700 nanometers ) ( 1 nanometer: 1*10^9 meters)
When the wavelength is 700 NM, the frequency of red light is 4.29 x 1014 Hz.
What frequency is red light with a 700 nm wavelength?For instance, visible red light with a wavelength of 700 nm has a frequency of 4.29 x 1014 Hz and an energy of 2.84 x 10-19 J or 171 kJ per mole of photons (note that Avogadro's number is 6.02 1023 mol1).
How often does 700 occur?A significant portion of the spectrum that is available for both commercial wireless and public safety communications is the 700 MHz Band. The Band, which spans 108 megahertz of spectrum from 698 to 806 MHz, was created as a result of the switch to digital television.
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complete the following statement using the choices below. air moves out of the lungs when the pressure inside the lungs is . group of answer choices less than the pressure in the atmosphere equal to the pressure in the atmosphere greater than the intra-alveolar pressure greater than the pressure in the atmosphere
Air moves out of the lungs when the pressure inside the lungs is greater than the pressure in the atmosphere equal to the pressure in the atmosphere less than the pressure in the atmosphere greater than the pressure in the atmosphere greater than the intra-alveolar pressure.
When a force is applied to a substance's limits in a given amount of space, it is known as pressure. Newton per square meter, sometimes known as a pascal, is the accepted SI unit for pressure (Pa). Mathematically:
p = F/A
where
the pressure, p
F is the standard force.
The boundary's surface area is A.
In most cases, a substance's molecules colliding with the system's borders is what produces pressure, also known as the force applied per unit area to a substance's boundaries. The walls attempt to move outward as a result of the pressures that molecules try to push upon impact with them. The pressure that a system puts on its surroundings is brought about by the forces generated by all of these encounters. applying intense pressure.
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if the molecular mass of a gas increases by a factor of 4 at constant temperature, its rms speed will
if the molecular mass of a gas increases by a factor of 4 at constant temperature, its rms speed is decrease by a factor of 2.
The mass of a given molecule is its molecular mass (m), which is expressed in Daltons. Because they contain various isotopes of an element, multiple molecules of the same substance can have distinct molecular weights. According to IUPAC, the related quantity relative molecular mass is a unitless comparison between the mass of a molecule and the unified atomic mass unit (also called the Dalton).. The molar mass, which is stated in g/mol, is defined as the mass of a specific material divided by the amount of a substance.As a result, the molecular mass is the mass of a single particle or molecule, while the molar mass is the average of numerous particles or molecules. When discussing macroscopic (weigh-able) amounts of a substance, the molar mass is typically the most relevant number.
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Part A
Consider the situation in the figure below, where two charged rods are placed a distance d on either side of an aluminum can. What does the can do?
View Available Hint(s)
Rolls to the left
Stays still
Rolls to the right
Part B
Now, consider the situation shown in the figure below. What does the can do?
Stays still
Rolls to the left
Rolls to the right
Part C
Using the setup trom the first question, imagine that you brielly touch the negatively charged rod to the can. You then hoid the two rods at equal distances or either side of the can. What does the can do?
View Avallable Hint(s)
Rolls toward the positively charged rod
Does not move
Rolls away from the positively charged rod
a) The can stays still
b) The can stays still
c) The can moves towards the positive rod
What is electrostatic force?We know that the electrostatic force is the force that attracts an object is the force that induces a charge on an object even though the objects do not touch each other. In all the cases that are shown in the images there is no contact between the charged bodies and the can.
In all the cases, we see that immediately the charged object is brought around the can, the object would cause the the electrons that are in the can to become polarized. It is the polarization of the electrons that are in the can that would make the can to move.
The movement of the can would be with reference to the kind of charges that are on the surrounding rods as well as the charges that are on the rods that have been brought around the can.
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7. The vectors d &e are [- 4, 1] \&[1,4] respectively. Find the angle b/n d&e( use dot product)
Answer:
90° or π/2 rad
Explanation:
Given two vectors:
[tex] \displaystyle{ \vec d = - 4 \hat i + \hat j} \ \: \text{and} \ \: \displaystyle{ \vec e = \hat i + 4 \hat j}[/tex]
We can find the angle by applying dot product:
[tex] \displaystyle{ \vec d \cdot \vec e = | \vec d| | \vec e| \cos \theta}[/tex]
Find magnitude of two vectors:
[tex] \displaystyle{ | \vec d| = \sqrt{ {( - 4)}^{2} + {1}^{2} }} \\ \\ \displaystyle{ | \vec d | = \sqrt{16 + 1} = \sqrt{17} }[/tex]
And
[tex] \displaystyle{ | \vec e| = \sqrt{ 1^{2} + {4}^{2} }} \\ \\ \displaystyle{ | \vec e | = \sqrt{1 + 16} = \sqrt{17} }[/tex]
Thus, we now have:
[tex] \displaystyle{ \vec d \cdot \vec e = \sqrt{17} \cdot \sqrt{17} \cos \theta} \\ \\ \displaystyle{ \vec d \cdot \vec e = 17 \cos \theta}[/tex]
Product of two vectors are:
[tex] \displaystyle{ \vec d \cdot \vec e = d_xe_x + d_ye_y}[/tex]
Therefore:
[tex] \displaystyle{( - 4)(1) + (1)(4) = 17 \cos \theta} \\ \\ \displaystyle{ - 4 +4= 17 \cos \theta} \\ \\ \displaystyle{0= 17 \cos \theta} \\ \\ \displaystyle{0 =\cos \theta}[/tex]
Therefore, the angle would be 90° or π/2 since we know that cos90° = 0.
if the position of a particle on the x-axis at time t is −5t2, then the average velocity of the particle for 0 ≤ t ≤ 3 is
Answer:
Below
Explanation:
Position at t = 0 = -5 (0)^2 = 0
Position at t = 3s -5 (3)^2 = -45
average velocity = (-45- 0 ) / 3s = -15 units/s
The average velocity of the particle for 0 ≤ t ≤ 3 is - 15 unit.
What is velocity?The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.
Given that: the position of a particle on the x-axis at time t is = -5t².
Hence, at t = 0s; the position of the particle = 0 unit.
at t = 3s; the position of the particle = -5× 3²unit = - 45 unit.
Then, the average velocity of the particle
= (final position - initial position) time interval
= (- 45 - 0)/3 unit
= - 15 unit.
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Listed following are distinguishing characteristics of different end states of stars. Match these to the appropriate consequence of stellar death. ► View Available Hint(s) Reset Help usually has a very strong magnetic feld sometimes appears as a pulsar In a binary system, it can explode as a supernova viewed from afar, time stops at its event horizon typically about the size (diameter) of Earth supported by electron degeneracy pressure has a mass no greater than 14 MSU size defined by its Schwarzschild radius White dwarf Neutron star Black hole
White Dwarfs are normally approximately the size (diameter) of Earth, Neutron Stars occasionally appear as pulsars, and Black Holes have sizes determined by their Schwarzschild radii. They are all maintained by electron degeneracy pressure.
Describe white dwarfs:The leftover cores of extinct stars are known as white dwarfs. White dwarfs with the same mass as the Sun are roughly the same size as the Earth, and electron degeneracy pressure protects them from the crushing effects of gravity.
What is a white dwarf's primary pressure source?White dwarfs mostly experience pressure from electron degeneracy, whereas neutron stars predominantly experience pressure from neutron degeneracy. It is the boundary past which nothing or anything can elude.
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In searching the bottom of a pool at night, a watchman shines a narrow beam of light from his flashlight, 1.3 m above the water level, onto the surface of the water at a point d = 2.9 m from his foot at the edge of the pool Where does the spot of light hit the bottom of the h = 2.2 m deep pool? Measure from the bottom of the wall beneath his foot. Express your answer to two significant figures and include the appropriate units.
The spot of light hit the bottom of the h = 2.2 m deep pool will hit the bottom at 4.98 m away.
Here ,
height h = 2.2 m
h1 = 1.3 m
d = 2.9 m
let the distance of spot where light hit bottom from side is l
angle of incidence , i = arctan(2.9/1.3)
i = 65.9 degree
Using Snell's law
1 * sin(i) = 1.33 * sin(r)
1 * sin(65.9) = 1.33 * sin(r)
r = 43.4 degree
Now , tan(r) = (l - 2.9)/h
tan(43.4 degree) = (l - 2.9)/2.2
solving for x
l = 4.98 m
the spot Light will hit the bottom at 4.98 m away
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what is the total work wfric done on the block by the force of friction as the block moves a distance 7.00 m up the incline?
The total work done on the block by the force of friction is 14 J.
What is what done by friction force?The work done by a force of friction is obtained from the product of the force of friction and the displacement of the object.
Mathematically, the work done by force of friction is given as;
W = Fd
where;
F is the force of frictiond is the displacement of the objectThe given parameters include;
force of friction = 2 Ndisplacement of the block = 7 mThe total work done on the block by the force of friction is calculated as;
W = 2 N x 7 m
W = 14 J
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The complete question is below:
what is the total work wfric done on the block by the force of friction of 2 N as the block moves a distance 7.00 m up the incline?
TRUE/FALSE. g if a body is rolling on another body, the friction force required is less than or equal to je'n the relative velocity of the points in contact is zero the linear and angular motions of a cylinder are constrained by one another the friction force leads to loss of energy
It is true that the needed friction force when one body is rolling over another body is zero in both angular and linear motion if the relative velocity of the points in contact is less than or equal to that value.
When one body slides through a surface, friction acts as a repelling force. The contact between two surfaces is what causes friction. The passage of things through a surface is not smooth if there is a lot of friction. Throughout this motion, kinetic energy is converted to thermal energy. The rate of change in an object's position relative to a frame of reference is called velocity, and it depends on time. An object's speed and direction of motion are specified by its velocity.
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A pulse of electromagnetic radiation is propagating in the negative y-direction. You have two devices that can detect electric and magnetic fields. You place detector #1 at location {eq}\rm \langle 0, 4, 0 \rangle \ m {/eq} and detector #2 at location {eq}\rm \langle 0, -4, 0 \rangle \ m {/eq}.(a) At time t = 0, detector #1 detects an electric field in the negative x-direction. At that instant, what is the direction of the magnetic field at the location of detector #1?(b) At what time will detector #2 detect electric and magnetic fields?
The following approaches describe how electromagnetic waves travel from the transmitter antenna to the receiving antenna: ground swells Ground wave propagation is the term for electromagnetic wave propagation that occurs along the surface.
What devices that can detect electric and magnetic fields?As a result, electromagnetic waves can be generated by allowing an alternating current to pass through a wire, or an antenna.
Therefore, The X axis represents spatial distance, and the Y axis represents amplitude. An oscillating magnetic field and an adjacent oscillating electric field make up electromagnetic waves.
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12. Calculate the potential difference that would be shown by the voltmeters shown in the circuits below. PLEASE ANSWER FAST
Answer: It is D
Explanation:
Divide the potential difference by the current to obtain the wire resistance. 20. Power A circuit has 12 of resistance and is connected to a 12-V battery.
vexplain the differences between refraction diffraction, and interference. are there any situations where more than one of those are happening at the same time? in which of these situations does the speed of a wave change? what about the wavelength? and the frequency? provide as detailed a description as possible to show that you have mastered the differences between these three processes
Refraction is when light travels from one medium to another
This is studied by considering the light as ray.
Here as the ray travels from one medium to another, its speed changes.
However, the frequency of the waves which depend on the source will not change in the other medium as well. So frequency does not change in refraction. But wavelength changes when light undergoes refraction.
Interference and Diffraction are studied treating light as wave. And both of these are basically superposition of waves
In interference, light from two coherent sources interfere with each other and the resulting wave pattern is the subject of interference.
While in diffraction, secondary wavelets emerging from the original wave's different parts is considered. The supersposition of these secondary wavelets is basically diffraction.
In both of these interference and diffraction, speed, wavelength and frequency all remains same as the speed and therefore wavelength depends only on the medium
Reflection involves the change in direction of a wave as it bounces off a barrier. Wave refraction involves the change in direction of a wave as it passes from one medium to another. Diffraction involves the change of direction of a wave as it passes around an opening or barrier in its path.
Reflection is the process of reflecting light when it hits an in-plane medium. Refraction is the process of changing the path and bending light as it passes through a material. Hence, this is the main difference between reflection and refraction.
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a spring scale shows a net force of 0.8 n acting on a 1.5-kg mass. what happens to the acceleration of the object if the net force is decreased to 0.2 n?(1 point)
Answer:
0.4m/s²
Explanation:
force = 0.8–0.2 = 0.6N
mass = 1.5kg
acceleration = ?
force = mass × acceleration
f = m × a
a = f/m
a = 0.6/1.5
a= 0.4 m/s²
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an electron in a cathode-ray tube is accelerated through a potential difference of 10 kv, then passes through the d
The field strength that will deflect the electrons is 2.93*10^-3 T or 2.93mT.
Calculation:
from figure
sin(o) =d/r
r =d/sin(o) =1.6/sin8 =11.5 cm
from conservation of energy
qV =(1/2)mv^2
[tex](1.6*10^-19)(10*10^3)=(1/2)(9.11*10^-31)*v^2[/tex]
[tex]v=5.93*10^7 m/s[/tex]
and
r = mv/qB
= [tex]B =mv/qr =(9.11*10^-31)*(5.93*10^7)/(1.6*10^-19)(11.5*10^-2)[/tex]
B = 2.93*10^-3 T or 2.93mT.
An electron is a subatomic particle with a negative elementary charge. Electrons belong to the first generation of the leptonic particle family and are generally considered elementary particles because they have no known composition or substructure. In the standard model of particle physics.
Electrons are the smallest particles that make up an atom and have a negative charge. In neutral atoms, the number of protons and electrons is the same, and are considered elementary or elementary particles. electrons belong to a group of elementary particles called leptons.
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match the terms with their definitions. matchtermdefinition instantaneous speeda) total distance covered divided by the total time required average speedb) rate of change of velocity with time accelerationc) rate of change of distance with time speedd) speed at a particular instant of time
Option B and C is the answer, A car's speedometer provides information about the vehicle's current instantaneous speed. It displays your speed at a certain point in time.
The speed of an item at a specific time is its instantaneous speed. The instantaneous velocity is obtained by adding the direction to the speed. In other words, this person's instantaneous velocity at that specific time was eight meters per second to the right. The speedometer on a car displays the vehicle's instantaneous speed since it does so while it is driving.
The complete question is :
which letter(s) of the sentences that are true of instantaneous speed?
a. Instantaneous speed is the total distance covered divided by
time.
b. Instantaneous speed is the speed at any instant.
c. The speedometer on a car shows the instantaneous speed.
d. If you traveled 30 kilometers in 1 hour, your instantaneous
speed would be 30 km/h.
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calculate the total impedance of the circuits in fig. 123. express your answer in rectangular and polar forms
a)6.8 + j8.2 ohms=10.65(50.33 deg) ohms
b)12-j6 ohms=13.41(-26.57 deg) ohms
c)6.6+j10 kohms=11.98(56.575 deg) ohms
RECTANGULAR FORMS
a) 6.8+j8.2 ohm
b)12-j6 ohm
c) 6.6+j10 kohm
POLAR FORMS
a) 10.65 angle 50.332 deg
b) 13.416 angle -26.565 deg
c) 11.982 angle 56.575 deg
Impedance, sometimes referred to as a "AC circuit," is the resistance to electricity passing through a circuit that uses an alternating current. Impedance, which is measured in Ohms, is the result of the combined action of the circuit's current-limiting elements, such as Resistance (R), Inductance (L), and Capacitance (C) (C).
The resistance to current flow in a Direct Current (DC) circuit is known as impedance, but in an AC circuit, impedance is the consequence of both the resistive (R) and reactive (X) components of the circuit. A DC circuit's electrical resistance is indicated by the letter "R," but an alternating AC circuit's resistance to current flow is indicated by the letter or symbol "Z."
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Question: A nuclear power plant operates at 71 % of its maximum theoretical (Carnot) efficiency between temperatures of 635 ∘C and 300 ∘C.
If the plant produces electric energy at the rate of 1.2 GW , how much exhaust heat is discharged per hour? Express your answer using two significant figures.
If the plant produces the electrical energy at the rate of 1.2 GW then the exhaust hear discharged per hour will be 73280 Giga Joule.
What is Electrical energy?When put in an electromagnetic field, charged matter experiences a force due to the fundamental property of electric charge. Positive or negative electrical ions are possible.
When two charges are in opposition to one another, they repel one another. The term "neutral" refers to an object that has no net charge.
As per the given information in the question,
Temperature, T(L) = 300 °C
Temperature, T(H) = 635 °C
Use the equation of efficiency of the Carnot engine,
1 - T(L)/T(H) = 1 - 300/635
= 0.52
The energy produced is 1.2 GW.
This energy accounts for 75% of all theoretically created energy.
Assume that the total energy produced by the plant is x.
x × (71/100) = 1.2
x = 1.69 GW
So, the energy lost = 1.69 - 1.2 = 0.49 GW
Assume the total heat provided is y.
0.52 × y = 1.69GW
y = 3.2 GW
So, the energy lost in the engine = 3.2 - 1.69 = 1.56
So, total energy loss = 1.56 + 0.49 = 2.05 GW or,
2.05 × 60 × 60 = 73280 Giga Joule.
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a distortion of the shape of four-dimensional spacetime. a distortion of the shape of three-dimensional space. a force that acts through the action of photons at the speed of light. a force that acts through the action of gravitons that travel instantaneously.
Just as waves spread out when a boat moves in water or a stone is thrown in a pond, gravitational waves are distortions in the curvature of space-time caused by motions of matter that propagate with the speed of light.
It turns out that one type of gluon chain behaves in the four-dimensional spacetime as the graviton, the fundamental quantum particle of gravity. In this description, gravity in four dimensions is an emergent phenomenon arising from particle interactions in a gravityless, three-dimensional world.
Since matter carries energy, such objects will have a gravitational field and so they will distort space-time. So one way in which a charge or a magnet will distort space-time is by virtue of its matter.
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to construct a nonmechanical water meter, a 0.500-t magnetic field is placed across the pipe supplying water to a home, and the hall voltage between the ends of a pipe diameter perpendicular to the field is measured. this works, because water contains ions, which are charged particles and move at the flow speed of the water.
Required:
a. Find the flow rate through a 3.00-cm-diameter pipe if the Hall voltage is 60.0 mV.
b. What would the Hall voltage be for the same flow rate through a 10.0-cm-diameter pipe with the same field applied?
The flow rate and hall voltage of non mechanical water meter is 0.339m/s and 1592.3volt respectively.
Flow rate equations depends on intensive study of fluid mechanics.
a]. flow rate =V/B x A= 60/0.500 x 3.14 x 0.03²=0.339m/s
V is hall voltage , B is magnetic field and A is cross sectional area.
The Hall effect principle describes the behavior of charge carriers when exposed to electric and magnetic fields. This principle can be viewed as an extension of the Lorentz force, which is the force acting on charge carriers (electrons and holes) passing through a magnetic field.
The Hall effect principle states that when a conductor or semiconductor is introduced with current flowing in a direction perpendicular to the magnetic field, voltage can be measured perpendicular to the current path.
b]. V=M/A=0.500/(3.14 x 0.01²) =1592.3volt
The effect of obtaining a measurable voltage as described above is called the Hall effect.
Hall voltage is directly proportional to the currentHall voltage is directly proportional to the applied magnetic field.To study about charge carriers -
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The velocity, , of an object that falls freely due to the Earth gravity can be modeled with the equation: m dv/dt = -mg + kv^2
where m is the mass of the object, g = 9.81 m/s^2, and k is a constant. Solve the equation for v for the case that m = 5 kg, k = 0.05 kg/m, 0
V=√1962 tan h (-√1962t/100) is the velocity of the object that is falling freely due to earth's gravity.
What is Newton second law of motion?The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.
According to Newton's second law of motion,
mdv/dt= -mg+kv²
Calculation:mdv/dt=-mg+kv²
5dv/dt=-10g+0.05v²
dv/dt=-2×9.81×0.01v²
dev/dt=0.01v²-19.62
-1/19.62 dv/dt =1-v²/1962
-1/19.62 ∫dv/1-v²/1962=∫dt
√1962 Tanh∧-1 (v/√1962)=-19.62t
Tanh∧-1(v/√1962)=-√1962/100 t
v=√1962 Tan h∧-1 (-√1962t/100)
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what is - zqxs toivde :: apple flavoured and 8 are blackberry flavoured. She chooses a sweet at random and eats it. Then she chooses another sweet at random. Calculate the probability
The probabilities regarding the sweets are given as follows:
a) both sweets were apple flavour: 5/17.
b) both sweets were blackberry flavored: 28/153.
c) the first was apple and the second was blackberry: 40/153.
How to calculate the probabilities?A probability is calculated as the division of the number of desired outcomes by the number of total outcomes.
The sweets are chosen without replacement, hence the probability that both sweets were of apple flavor is calculated as follows:
p = 10/18 x 9/17 = 5/17.
The probability that both were blackberry flavored is calculated as follows:
p = 8/18 x 7/17 = 28/153.
The probability that the first was apple and the second was blackberry is of:
p = 10/18 x 8/17 = 40/153.
Missing InformationThe complete problem is given as follows:
Maria has a bag containing 18 fruit drop sweets. 10 are apple flavoured and 8 are blackberry flavoured. She chooses a sweet at random and eats it. Then she chooses another sweet at random. Calculate the probability that:
a) both sweets were apple flavour
b) both sweets were blackberry flavored
c) the first was apple and the second was blackberry
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Consider a fish swimming forward in the ocean. Which of the following describes the basic action/reaction forces between the fish and the water? Explain the answer.
a. The forces point in the same direction because forces in liquid media behave differently than forces in air.
b. The force of the fish points forward while the force of the water points back.
c. The force of the fish points back while the force of the water points forward.
d. The force of the fish points upward while the force of the water pulls downward.
Answer:
turn off the force
Explanation:
a large goose lands in a lake and bobs up and down for a short time. a fisherman notices that the first wave crest created by the goose reaches the shore 8.6 ss after the goose first contacts the water. the distance between two wave crests is 75 cmcm, and in 1.8 ss he sees four wave crests hit the shore.
The shore the goose landed 11.85m
Briefly:-For development of this problem we must resort to concepts of the basic kinematic equations that define the distance of a body, such as speed for a certain time, that is,
D=v*t
From the information is provided say that the distance between the cretas is= 0.6m,
Dcrets= .06m
In our information we have also that length between the first and the latest wave is in time terms of 2.2s. They are 4 waves in 3 intervals then
Dt= Dcrets*3= 2.4m
t= 1.6s
V= Dt/t
V= 1.5 m/s.
Then the distance from the shore is given by the speed of the waves for the total time. That is
X= v*t=11.85
the shore the goose landed X=11.8m
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