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
Neko [114]
3 years ago
5

One hundred turns of (insulated) copper wire are wrapped around a wooden cylindrical core of cross-sectional area 5.87 × 10-3 m2

. The two ends of the wire are connected to a resistor. The total resistance in the circuit is 14.9 Ω. If an externally applied uniform longitudinal magnetic field in the core changes from 1.93 T in one direction to 1.93 T in the opposite direction, how much charge flows through a point in the circuit during the change?
Physics
1 answer:
Grace [21]3 years ago
7 0

Answer:

The amount of charge that flow through a point is \Delta q  =  0.126 \ C

Explanation:

From the question we are told that

    The number of turns is  N  =  100

    The area is  A = 5.87 *10^{-3} m^2

       The total resistance is R = 14.9 \ \Omega

       The magnetic field in first direction  is  B_1 =  1.93 \ T

        The magnetic field in second   direction  is B_2 = -1.93 \ T

The change in magnetic field is evaluated as

     \Delta B  =  B_1 - B_2

substituting values

      \Delta B  =  1.93 - [- 1.93]

       \Delta B  =3.2 \ T

The induced emf due to the change is mathematically evaluated as

        e = NA \frac{\Delta B }{\Delta t }

This can also be mathematically represented as

     e = IR

     Where I can be mathematically represented as

     I =  \frac{\Delta q }{\Delta t}

So  

     e = \frac{\Delta q}{\Delta t } R

Now  

      \frac{\Delta q}{\Delta t } R    = NA \frac{\Delta B }{\Delta t }

=>   \Delta q  =  \frac{N A (\Delta B)}{R}

substituting values

     \Delta q  =  \frac{100 *  5.87 *10^{-3} (3.2}{14.9}

     \Delta q  =  0.126 \ C

     

   

     

You might be interested in
Kinetic energy is the energy of . It increases with and .Potential energy is the energy of or . It increases with , and
lorasvet [3.4K]

Answer:

k is the energy of motion it increase with four of load you carry

8 0
3 years ago
A ball of clay falls freely to a concrete floor. The ball does not bounce noticeably, and it quickly comes to rest. What has hap
omeli [17]

Answer:

The mechanical energy is converted to potential energy while the kinetic energy is zero

Explanation:

mechanical energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object. The total mechanical energy is the sum of these two forms of energy.

The Law of Conservation of Energy: Energy cannot be created or destroyed, but is merely changed from one form into another. This means that potential energy can become kinetic energy, or vice versa, but energy cannot “disappear”.

The mechanical energy is converted to potential energy while the kinetic energy is zero

7 0
3 years ago
A car’s tire rotates 5.25 times in 3 seconds. What is the tangential velocity of the tire?
Lena [83]

The tangential velocity of the car's tire is the product of the angular velocity and radius of the car's tire which is 11(r) m/s.

<h3>Angular velocity of the tire</h3>

The angular velocity of the tire is the rate of change of angular displacement of the tire with time.

The magnitude of the angular velocity of the tire is calculated as follows;

ω = 2πN

where;

  • N is the number of revolutions per second

ω = 2π x (5.25 / 3)

ω =  11 rad/s

<h3>Tangential velocity of the tire</h3>

The tangential velocity of the car's tire is the product of the angular velocity and radius of the car's tire.

The magnitude of the tangential velocity is caculated as follows;

v = ωr

where;

  • r is the radius of the car's tire

v = 11r m/s

Learn more about tangential velocity here: brainly.com/question/25780931

4 0
2 years ago
A penny has a mass of 2.50 g, a diameter of 19.55 mm, and a thickness of 1.55 mm. Calculate the density of the material from whi
Dmitry [639]
Density = (mass) divided by (volume)

We know the mass (2.5 g).  We need to find the volume.

The penny is a very short cylinder.
The volume of a cylinder is (π · radius² · height).
The penny's radius is 1/2 of its diameter = 9.775 mm.
The 'height' of the cylinder is the penny's thickness = 1.55 mm.

Volume  =  (π) (9.775 mm)² (1.55 mm)

             =  (π) (95.55 mm²) (1.55 mm)

             =  (π) (148.1 mm³)

             =        465.3 mm³

We know the volume now.  So we could state the density of the penny,
but nobody will understand what we have.  Here it is:

         mass/volume = 2.5 g / 465.3 mm³  =  0.0054 g/mm³  .

Nobody every talks about density in units of ' gram/(millimeter)³ ' .
It's always ' gram / (centimeter)³ '.
So we have to convert our number for the volume.

                         (0.0054  g/mm³)  x  (10 mm / cm)³

                 =      (0.0054 x 1,000)  g/cm³

                 =          5.37  g/cm³  .

This isn't actually very close to what the US mint says for the density
of a penny, but it's in a much better ball park than 0.0054 was.
4 0
3 years ago
A simple experiment to measure the speed of sound doesn't involve a stopwatch. You can fill up along tube with water and put a t
Serhud [2]

Answer:

Explanation:

In order to answer this problem you have to know the depth of the column, we say R, this information is important because allows you to compute some harmonic of the tube. With this information you can compute the depth of the colum of air, by taking tino account that the new depth is R-L.

To find the fundamental mode you use:

f_n=\frac{nv_s}{4L}

n: mode of the sound

vs: sound speed

L: length of the column of air in the tube.

A) The fundamental mode id obtained for n=1:

f_1=\frac{v_s}{4L}

B) For the 3rd harmonic you have:

f_3=\frac{3v_s}{4L}

C) For the 2nd harmonic:

f_2=\frac{2v_s}{4L}

7 0
3 years ago
Other questions:
  • Can someone help me out by balancing this equation? :')
    7·1 answer
  • A block of density pb = 9.50 times 10^2 kg/m^3 floats face down in a fluid of density pt = 1.30 times 10^3 kg/m^3. The block has
    13·1 answer
  • Homer agin leads the varsity team in home runs. In a recent game, homer hit a 96 mi/hr sinking curve ball head on, sending it of
    7·2 answers
  • While riding on an elevator descending with a constant speed of 2.7 m/s , you accidentally drop a book from under your arm. How
    11·1 answer
  • On the Moon's surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected. The distanc
    15·1 answer
  • Which interaction of nature depends on the distance through which it acts and is involved in beta decay? a. strong c. electromag
    13·1 answer
  • What happens when a mechanical wave travels through a medium?
    9·2 answers
  • What energy output objects work with the turbine
    14·1 answer
  • A 0.5 kg object, initially at rest, is pulled to the right along a frictionless horizontal surface by a constant horizontal forc
    13·1 answer
  • What is the acceleration of the object?<br> m/s²
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!