FIGURE 4.1 shows a rectangular wire loop 0.3 m x 0.2 m moving horizontally to the right at 12 ms -1 in a uniform magnetic field of 0.8 T. The induced current in the wire is 3 A.
(i) Determine the resistance of the wire loop
(ii) Determine the direction of the induced current. Explain how you determine the direction of the induced current.
Answers
[tex]\underline{\underline{\large\bf{Solution:-}}}\\[/tex]
(I) Emf developed,E in the loop is given as:
[tex]\begin{gathered}\\\implies\quad \sf E = BLv \\\end{gathered} [/tex]
[tex]\begin{gathered}\\\implies\quad \sf E = 0.8 \times 0.3 \times 12 \\\end{gathered} [/tex]
[tex]\begin{gathered}\\\implies\quad \sf E = 2.88 V \\\end{gathered} [/tex]
[tex]\longrightarrow[/tex]I = E/R
[tex]\quad[/tex]R = E/I
where
R = resistanceE = Induced EMFI = Current[tex]\begin{gathered}\\\implies\quad \sf R = \frac{2.88}{3} \\\end{gathered} [/tex]
[tex]\begin{gathered}\\\implies\quad \boxed{\sf{ R = 0.96 \;ohm}}\\\end{gathered} [/tex]
(ii) The direction of current induced is from P to Q which is given by B × V vector . It may also be explained by Lenz law. Since magnetic field is from S to N . The fingers of the right hand are placed around the wire so that the curling of fingers will show the direction of the magnetic field produced by the wire then the thumb points in the direction of current flow which is from P to Q.
Related Questions
an object of mass 5 kg is raised above the ground calculate work done on the object.
Answers
Answer:
work done on the body is the product of the 3 quantities provided
mass in kilogram, macceleration due to gravity in meters per seconds, gdistance or height in meters, hExplanation:
Raising the object, the work done will be the potential energy.
potential energy equals mgh.
Get the remaining quantities and multiply it out g is usually 10m/s
What game has worst Physics?
Answers
Answer:
Cyberpunk has worst Physics
4. What's metamorphism?
A. The process by which new minerals form as a result of precipitation from an aqueous solution
B. The process by which do minerals form as a result of biological processes in living organisms
C. The process by which two minerals form from existing minerals that become unstable at earth’s surface
D. The process by which new minerals form from existing minerals as a result of elevated temperature or pressure
Answers
Answer: Your answer is D. The process by which new minerals form from existing minerals as a result of elevated temperature or pressure
Hope this helps!
What is the highest-frequency sound to which this machine can be adjusted without exceeding the prescribed limit
Answers
The highest frequency sound to which the machine can be adjusted is :
4179.33 HzGiven data :
Pressure = 10 Pa
Speed of sound = 344 m/s
Displacement altitude = 10⁻⁶ m
Determine the highest frequency sound ( f )applying the formula below
Pmax = [tex]B(\frac{2\pi f}{v}) A[/tex] --- ( 1 )
Therefore :
f = ( Pmax * V ) / [tex]2\pi \beta A[/tex]
= ( 10 * 344 ) / 2[tex]\pi[/tex] * 1.31 * 10⁵ * 10⁻⁶
= 4179.33 Hz
Hence we can conclude that The highest frequency sound to which the machine can be adjusted is : 4179.33 Hz .
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Attached below is the missing part of the question
A loud factory machine produces sound having a displacement amplitude in air of 1.00 μm, but the frequency of this sound can be adjusted. In order to prevent ear damage to the workers, the maximum pressure amplitude of the sound waves is limited to 10.0 Pa. Under the conditions of this factory, the bulk modulus of air is 1.31×105 Pa. The speed of sound in air is 344 m/s. What is the highest-frequency sound to which this machine can be adjusted without exceeding the prescribed limit?
ACTIVITY 1: IDENTIFY IT RIGHT AWAY! Directions: Identify what is being described in each item.
1. The first name of the sport badminton.
2. A high-drag projectile, with an open conical shape.
3. Racquet sport played using racquets to hit a shuttlecock across a net.
4.The year when the first rules for badminton were established.
5. A rectangular in shape and divided into halves by a net.
Answers
The Identification of what is being described in the text above is written below:
The first name of the sport badminton was Poona. A high-drag projectile, with an open conical shape is called shuttlecock.Racquet sport played using racquets to hit a shuttlecock across a net is called badminton.The year when the first rules for badminton was established is 1877.A rectangular in shape and divided into halves by a net. is called the court.What was Poona about?This was known to be the first and original name that was given to badminton. This word was said to have originated from a city that has the same name in India where badminton was said to be a popular sport that was played by the British military officers.
Conclusively, badminton is a very popular sport today and the name and rules used in Poona were first made public in 1873.
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4. In the image, a rubber balloon is being rubbed back and forth against a wool
scarf. Which of the following is true? *
The balloon lost some electrons to the scarf during the charging process.
The balloon lost all of its electrons to the scarf during the charging process.
After rubbing, the balloon has the opposite charge as the scarf.
The scarf would now be repelled by the balloon.
Answers
lost some electrons I think
HElp meee
explain how to do this also
Answers
Answer:
[tex]\huge\boxed{\sf x = 18\°}[/tex]
Explanation:
If ∠ABC and ∠DEF are complementary angles, this means they add up to 90 degrees.
So,
∠ABC + ∠DEF = 90°
72 + x = 90
Subtract 72 to both sides
x = 90 - 72
x = 18°
[tex]\rule[225]{225}{2}[/tex]
19) Study the chart above. Which statement is TRUE regarding natural and synthetic (manufactured) fibers?
A) Glass is a natural material.
B) Staple fibers do not come from animals.
C) Organic manufactured materials are either synthetic or natural plastics.
D) Synthetic polymers including polyester and nylon, make up a large category of synthetic material.
Answers
Answer: The answer is D: Synthetic polymers including polyester and nylon, make up a large category of synthetic material.
Explanation:
Which of the vectors in the graph below is the negative of the vector v?
Answers
Answer:
D
Explanation:
Answer:
A. D
Explanation:
A steam governor uses negative feedback to control the speed of a steam engine. Suppose a steam governor
has two balls that are each rotating with a tangential speed of 3.7 m/s. The balls are 0.10 m from the rotation
axis, and the centripetal force on each ball is 670 N. What is the mass of one of the balls?
Answers
Answer:
F = M a Newton's second law
a = v^2 / R = (3.7 m/s)^2 / .10 m = 137 m/s^2
M = F / a = 670 N / 137 m/s^2 = 4.89 kg
Does anyone know how to find the mass of one piece of paper , printing paper to be exact
Answers
Determine the mass of a sphere with a radius of 8 cm having a density of 7500 kg / m3
Answers
Answer:
Explanation:
V=2140CM3
M=VOLUME*DENSITY
7500kg/m3=7.5g/cm3
2140cm3*7.5g/cm3=16050
16050g
What is the power in watts of a 6-A
appliance designed to operate on a 120-V circuit?
Answers
Answer:
720W
Explanation:
PLEASE MARK ME AS BRAINLIEST AND HAVE A NICE DAY
7. A golfer hits a golf ball a through a horizontal displacement of 80m. The time of flight for the ball was 1.8
seconds. Keeping it simple, ignoring friction and the ball's rotation, determine the velocity (magnitude and
direction) of the ball as it left the golfer's club.
Answers
Answer:
44.4 m/s
Explanation:
d = 80 m, t = 1.8 s, find v
d = v*t
v = d/t = 80/1.8 = 44.4 m/s
which statment is correct about the mass of carbon dioxide used during photosynthesis
Answers
Answer:
the amount of carbon dioxide used is equal to the amount of oxygen formed.
Explanation:
I hope that helped you didn't put any statements so I couldn't really tell witch one was right-
A student runs an experiment in which a block of known mass is moving across a horizontal table in an xy-coordinate plane. As the block reaches the origin of the coordinate system, the block explodes into two pieces of masses m1 and m2. During the experiment, the velocity of the block 1.0 second before the explosion and the velocity of the two pieces 1.0 second after the explosion are measured using a motion sensor. Conservation of momentum is applied using the masses of the two pieces. However, when the velocity of the piece of mass m2 is calculated, the measured value is 10% less than the calculated value. Which of the following statements best explains the difference in the calculated and measured velocity?
Answers
The statement that best explains this difference is "As the block is moving across the table, friction will affect the block’s motion and thus could account for the difference" (option A).
What is friction?In physics, friction can be defined as a force of resistance that occurs when an objects moves above a surface or above another object. Friction can be classified in four types:
Static friction: This is the type of friction when two objects are in contact agaisnt each other but there is no movement.Sliding friction: This type of friction occurs as one object moves over another.How does friction affect the velocity of the object moving?This force opposes the movement of the object and therefore it can affect the velocity of the object by decreasing it. Based on this, it is likely that the difference in the calculation is because of friction as this was not considered (option A).
Note: This question is incomplete; here is the missing section:
A. As the block is moving across the table, friction will affect the block’s motion and thus could account for the difference.
B. It is possible that a small amount of the original block was lost during the explosion.
C. When the student did the calculation, the student assumed that the explosion occurred just as the block reached the origin. The difference in velocity could be due to the explosion occurring either just before or just after the origin.
D. The explosion created a force that affected the experiment.
E. Conservation of momentum is not the correct equation to apply to the explosion, since the two pieces apply forces to each other.
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Answer:
The difference between the calculated and measured velocity of the piece of mass m2 can be attributed to several factors. Here are a few possible explanations:
1. Measurement error: It's possible that there were errors or inaccuracies in the measurements taken by the motion sensor. This could include issues with the sensor itself, calibration errors, or human error in recording the data.
2. Friction and air resistance: The experiment assumes an ideal scenario where there are no external forces acting on the block and the resulting fragments. However, in reality, there may be friction and air resistance present, which can reduce the velocity of the pieces after the explosion. These factors were not accounted for in the conservation of momentum calculations.
3. Internal forces: The explosion of the block into two pieces involves internal forces between the fragments. These forces may not be completely accounted for in the conservation of momentum analysis. If there are significant internal forces acting during the explosion, they could reduce the calculated velocity of the piece of mass m2 compared to the measured value.
4. Incomplete information: It's possible that there is additional information or factors that were not considered in the given description of the experiment. Without knowing all the details, it's challenging to pinpoint the exact reason for the discrepancy between the calculated and measured velocity.
In summary, the most likely explanation for the difference between the calculated and measured velocity of the piece of mass m2 is measurement error or the presence of external forces (such as friction and air resistance) and internal forces (during the explosion) that were not accounted for in the analysis.
Using data from the diagram below, calculate the ratio of the height to which water at 0°C and mercury are raised or suppressed by capillary action in the same glass tube (use density and
surface tension values of water that are accurate to at least 3 significant figures for your calculation. Include the appropriate sign with your answer.)
water
mercury
Answers
Due to stronger cohesive than adhesive forces mercury levels falls in a capillary tube. However, water level rises in a capillary tube due to greater adhesive than cohesive forces.
What is capillary action?Capillary action refers to the rise or fall of a liquid in a narrow tube.
The height to which a liquid is depressed or rises in a narrow tube depends on the strength of the cohesive forces of the molecules of the fluid compared to the adhesive forces between the molecules of the fluid and the walls of the tube.
In water, the adhesive forces between the walls of the tube and water molecules is greater than the cohesive forces between water molecules, hence water rises in a capillary tube.
In mercury the adhesive forces between the walls of the tube and water molecules is less than the cohesive forces between mercury molecules, hence mercury levels falls in a capillary tube.
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Solve and show conversions
Answers
Answer:
°c to °F = 176°F
°c to K = 353 K
Explanation:
1, °c to °F = (°c × 9/5) +32
[tex](80 \times \frac{9}{5} ) + 32[/tex]
(16 × 9) + 32 = 144 + 32 = 176°F
2, °c to K = °c + 273
[tex]80 + 273[/tex]
= 353 K
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An unbalanced force of 2 newtons applied to a given mass produces an acceleration. of an unbalanced force of 1 newton is applied to the same mass, the acceleration produced will be
the same
twice as much
one-half as much
four times as much
Explain your answer to the previous question, using full sentences.
i desperately need help!!!
Answers
Answer:
Twice as much
Explanation:
D 5-7 Be the only person I know of is the Book with all men and men and people experience the first of the wisdom and
The acceleration produced will be one-half as much.
What is acceleration?Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. SI unit of acceleration is meter/second² (m/s²).
From Newton's 2nd law of motion; it can be written that:
Force = mass × acceleration
acceleration = force/mass.
Now, according to the question, an unbalanced force of 2 newtons applied to a given mass produces an acceleration.
So, when an unbalanced force of 1 newton is applied to the same mass, the force applied on the object becomes half.
Hence, from the equation, the acceleration produced will be one-half as much.
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Captain Picard beams down to a previously unexplored planet. The planet has four times the mass of Earth, and twice the radius. If the force of gravity on the surface of Earth is represented by "g," what is the force of gravity on the surface of the new planet?
A. g
B. 2g
C. 4g
D. 8g
Answers
The force of gravity on the surface of the new planet is g
Option A is correct
The force of gravity on the surface of the new planetForce of gravity: the force of gravity speaks to the force that acts on every body that exists under a given space or planet.
The force of gravity acts on masses to create weight.
W=mg
Generally the equation for the Force of gravity is mathematically given as
[tex]g=\frac{Gme}{Re^2}\\\\Therefore\\\\g'=\frac{G*4Me}{2Re^2}\\\\g=4/4\frac{GMe}{Re^2}\\\\[/tex]
g=1g
Therefore, the force of gravity on the surface of the new planet is g
Option A is correct
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Which of the following determines the natural frequency of an object?
A. Color
B. Pressure
C. Length
Answers
Answer:
C
Explanation:
The longer an object, the slower it vibrates and since frequency is the number of oscillations an object makes per second, then you can say the longer the object, the lower the frequency, and the inverse is true.
The energy that can be extracted from a storage battery is always less than the energy that goes into it while it is being charged. Why?
Answers
This is because no battery or energy storage device is 100% efficient, meaning that some of the energy that goes into charging the battery is lost as heat or other forms of energy during the charging process.
This loss of energy is due to several factors, including resistance in the battery's electrical components, chemical reactions that occur within the battery during charging, and other inefficiencies in the charging process.
As a result, when the battery is discharged, it cannot release all the energy that was originally put into it during charging, and some of the energy is lost as heat or other forms of energy. This is known as energy loss or energy dissipation, and it is a common occurrence in all types of energy storage systems.
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The speed in Case A is twice that of Case B. The object mass
in Case A is one-half that of Case B. The radius is the same
in each case. How does the net force in Case A compare to
the net force in Case B?
Answers
Answer:
one-half that of Case B.
Explanation:
I am sorry if I get it wrong
Find the weight of a 2 g (=0.002 kg) computer chip. The acceleration due to gravity at the surface of Earth is 9.8 m/s^2.
Answers
Answer: 0.0196 Newtons (0.0196N)
Explanation:
Weight is the test mass multiplied by the gravitational field created from the source mass. The source mass is the Earth, and the test mass is the computer chip:
[tex]W=mg[/tex]
[tex]W=(0.002kg)(9.8m/s^2)[/tex]
[tex]W=0.0196N[/tex]
5. A 100 N force is applied at an angle of 30 degrees to the horizontal to move a 15 kg object at a constant speed for a horizontal distance of 5 m. Calculate the work done. Your answer Back Next Clear form
Answers
Answer:
433 J
Explanation:
F = 100 N, θ = 30°, m = 15 kg, d = 5 m
Work done = F * d * cosθ = 100 * 5 * cos(30) = 433 J
A car accelerates uniformly from rest tona speed of 30.0 mi/h in 12.0s. Find the distance the car travels during this time? Find the constant acceleration of the car?
Answers
Answer:
2.5 mi/s^2
Explanation:
please see paper for work!
A 4-kg box is pushed against a flat 1 point
surface with a force of 100 N for 5
meters. The work done on the box is
Answers
Answer:
wd = F * D
wd = 100 * 5
wd = 500
The work done on the box is 500 Joules.
What is work?
When an object is moved over a distance by an external force, at least a portion of which is applied in the direction of the displacement, it is said to have done "work" in physics. By multiplying the length of the path by the component of the force acting along the path, work can be calculated if the force is constant.
As work is a scalar quantity, it can be defined only by magnitude, it has no direction. SI unit of work is Joule and CGS unit of work is erg.
Given parameters:
Mass of the box: m = 4 kg.
Force applied on the box: F = 100 N.
Displacement of the box: d = 5 meters.
Hence, the work done on the box is = applied force × displacement
= 100 N × 5 meters
= 500 Joules.
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If a capital letter R is seen in an ordinary mirror , what does it look like?
Answers
If a capital letter R is seen in an ordinary mirror, it will look like option D. The correct option is D.
What is a mirror?Something that is reversed with respect to a previous instance of the same thing, or with respect to a plane or axis in between. The best illustration of a virtual image is a reflection in a mirror.
Real images are created by intersecting rays, and virtual images are created by diverging rays. A mirror creates a virtual image by reflecting a real image (blue) back to the viewer (red), giving the impression that the items in the image are behind the mirror's surface and facing the other way (purple).
The R in the mirror will look vertically inverse. The types of mirrors are plane mirrors, rotating mirrors, inclined mirrors, and spherical mirrors.
Therefore, the correct option is D.
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A ball falls from rest from a height of 7.5 m above the ground level. How much time does the ball take to reach the ground?. Consider g = 9.81 m/s².
2.47 s
0.62 s
1.24 s
0.87 s
Answers
Used s=ut+1/2at^2
complete these sentences by crossing out the incorrect words.
The greater the amplitude of a wave, the ( less/more ) energy it is transferring. As waves spread out from a source, the energy they transfer gets more ( concentrated/ spread out ) and so the amplitude of the waves gets ( larger/ smaller)
Answers
Answer:
The greater the amplitude of a wave, the ( less/more ) energy it is transferring.
The more energy; so that means less would be the incorrect word
As waves spread out from a source, the energy they transfer gets more ( concentrated/ spread out )
Spread out; so that means concentrated would the be the incorrect word
and so the amplitude of the waves gets ( larger/ smaller)
Smaller; so that means larger is the incorrect word