1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pishuonlain [190]
3 years ago
12

A fixed 11.2-cm-diameter wire coil is perpendicular to a magnetic field 0.53 T pointing up. In 0.10 s , the field is changed to

0.24 T pointing down. What is the average induced emf in the coil?
Physics
1 answer:
Karolina [17]3 years ago
3 0

Answer:

The average induced emf in the coil is 0.0286 V

Explanation:

Given;

diameter of the wire, d = 11.2 cm = 0.112 m

initial magnetic field, B₁ = 0.53 T

final magnetic field, B₂ = 0.24 T

time of change in magnetic field, t = 0.1 s

The induced emf in the coil is calculated as;

E = A(dB)/dt

where;

A is area of the coil = πr²

r is the radius of the wire coil = 0.112m / 2 = 0.056 m

A = π(0.056)²

A = 0.00985 m²

E = -0.00985(B₂-B₁)/t

E = 0.00985(B₁-B₂)/t

E = 0.00985(0.53 - 0.24)/0.1

E = 0.00985 (0.29)/ 0.1

E = 0.0286 V

Therefore, the average induced emf in the coil is 0.0286 V

You might be interested in
II. IDENTIFY THE TYPE OF FORCE
uysha [10]

Answer:

Explanation:

1. Frictional force is responsible for running of car and buses on roads.

2.Gravitational force exists between astronauts in space.

3. Magnetic for is responsible to attract the iron objects using a magnet

4.Electrostatic force is responsible for fiber to stick on the skin.This force occurs due to the presence of charge.

5.When a person is pushing a trolley then object experience a normal reaction from ground.

6.Gravitational force makes the planet to move in their orbits.

4 0
3 years ago
Some examples of solar ejections
mylen [45]
Coronal Mass ejections or Solar ejections are activities on the surface of the sun termed to the reaction of the gas composition of the sun's surface attributing to explosion of these gases. One example most commonly known as Solar Flares, and another example is termed as erupting prominence.
8 0
4 years ago
In the human body oxygen is absorbed by the lungs and nutrients are absorbed by the small intestine in a single-cell organism th
Katyanochek1 [597]

<span>In a single cell organism, the absorption of nutrients and control of certain things to <span>come inside or go outside the cell directly involves the cell membrane. Although, the basic function of the cell membrane is to protect the cell from its surroundings. It also facilitates the transport of substances needed for survival.</span></span>

5 0
4 years ago
Consider a short time span just before and after the spark plug in a gasoline engine ignites the fuel-air mixture and releases 1
Tju [1.3M]

Answer:

Temperature after ignition=7883.205 K

Explanation:

The number of moles is,

n=PV/RT

=(1.18x10^6)(47.9x10^-6)/8.314(325)

= 0.0209 moles

a) In this process volume is constant

Q=U

=nCv.dT

dT= Q/nCv

=1970/(1.5x8.314)(0.0209)

= 7558.205 K

The final temperature is,

= 7558.205+325

= 7883.205 K

5 0
3 years ago
Read 2 more answers
A person hits a 45-g golf ball. The ball comes down on a tree root and bounces
Verizon [17]

Answer:

Maximum height, h = 10 m          

Explanation:

It is given that,

Mass of golf ball, m = 45 g = 0.045 kg

The ball comes down on a tree root and bounces  straight up with an initial speed of 14.0 m/s.

We need to find the height the ball will rise  after the bounce. It is based on the conservation of energy such that,

\dfrac{1}{2}mv^2=mgh

h is maximum height raised by the ball

h=\dfrac{v^2}{2g}\\\\h=\dfrac{(14)^2}{2\times 9.8}\\\\h=10\ m

So, the ball will raised to a height of 10 meters.

5 0
3 years ago
Other questions:
  • Three features describe the motion of an object. they are...
    13·2 answers
  • Using energy considerations, calculate the average force (in N) a 70.0 kg sprinter exerts backward on the track to accelerate fr
    11·1 answer
  • Materials that are magnetic have_________that are lined up in the same orientation?
    14·1 answer
  • A constant force N acts on an object as it moves along a straight-line path. If the object’s displacement is m, what is the work
    8·1 answer
  • Examples of the six simple machines
    13·2 answers
  • To practice Problem-Solving Strategy 2.1 Motion with constant acceleration You are driving down the highway late one night at 20
    8·1 answer
  • Give two examples of solutions we need in our lives.
    7·1 answer
  • Educación física como se puede mejorar la técnica deportiva
    14·1 answer
  • Which of the following statements BEST explains why ball-and-socket joints have the greatest range of motion?
    14·1 answer
  • Thermal energy is transferred between objects when they have?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!