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
Ratling [72]
4 years ago
6

A circular coil lies flat on a horizontal surface. A bar magnet is held fixed above the center of the coil with its north pole p

ointing downward. What is the direction of the induced current in the coil
Physics
1 answer:
Alex17521 [72]4 years ago
5 0

Answer:

Explanation:

If the magnet is dropped from this position, then the direction of the induced current in the coil would be anticlockwise. Lenz's law allows us to predict the direction of the induced current in a circuit. It is also known as the Right hand rule. It states that the current that is being induced in a particular circuit is as a result of the change in the magnetic field in order to oppose the change in the magnetic flux and also to apply an mechanical force that is opposing the motion. Because of this, the current is pointed to the direction of  the pole, to oppose this the induced current should be directed anticlockwise.

You might be interested in
An optical disk drive in a computer can spin a disk at up to 10,000 rpm. If a particular disk is spun at 7570 rpm while it is be
anastassius [24]

Answer:

The magnitude of the average angular acceleration is calculated as 1822.36\ rad/s^{2}

Explanation:

Maximum speed that can be attained by the disk, N_{m} = 10,000 rpm

Speed of spinning of the disk, N = 7570 rpm

Time taken to come to rest, t = 0.435 s

Now,

The initial angular velocity is given by:

\omega = \frac{2\pi N}{60} = 792.73\ rads^{-1}

Final angular velocity, \omega' = 0\ rads^{- 1}

The average angular acceleration of the disk can be computed by using the kinematic eqn:

\omega' = \omega + \alpha t

0 = 792.73 + 0.435\alpha

\alpha = - 1822.36\ rads^{- 2}

5 0
4 years ago
Read 2 more answers
an object is placed 15.8 cm in front of a thin converging lens with an unknown focal length. if a real image forms behind the le
storchak [24]
<span>On what:

f (is the focal length of the lens) = ? 
p (is the distance from the object to the lens) =15.8 cm
p' (is the distance from the image to the spherical lens) = 4.2 cm

</span><span>Using the Gaussian equation, to know where the object is situated (distance from the point).
</span>
\frac{1}{f} = \frac{1}{p} + \frac{1}{p'}
\frac{1}{f} = \frac{1}{15.8} + \frac{1}{4.2}
\frac{1}{f} = \frac{2.1}{33.18} + \frac{7.9}{33.18}
\frac{1}{f} =  \frac{10}{33.18}
Product of extremes equals product of means:
10*f = 1*33.18
10f = 33.18
f =  \frac{33.18}{10}
\boxed{\boxed{f = 3.318\:cm}}\end{array}}\qquad\quad\checkmark

6 0
4 years ago
A child (approximately 4 years old) takes her metal “slinky Toy” (a flexible coiled metal spring) and does various tests to dete
anzhelika [568]

Answer:

248

Explanation:

L = Inductance of the slinky = 130 μH = 130 x 10⁻⁶ H

l = length of the slinky = 3 m

N = number of turns in the slinky

r = radius of slinky = 4 cm = 0.04 m

Area of slinky is given as

A = πr²

A = (3.14) (0.04)²

A = 0.005024 m²

Inductance is given as

L = \frac{\mu _{o}N^{2}A}{l}

130\times 10^{-6} = \frac{(12.56\times 10^{-7})N^{2}(0.005024)}{3}

N = 248

8 0
3 years ago
How many cranial nerves do we have
maxonik [38]
12.


The twelve cranial nerves are: olfactory nerve, optic nerve, oculomotor nerve, trochlear nerve, trigeminal nerve, abducens nerve, facial nerve, vestibulocochlear nerve, glossopharengeal nerve, vagus nerve, spinal accessory nerve, and hypoglossal nerve.
:)
8 0
3 years ago
You slide a breakfast plate along the counter toward your friend, but your friend misses it and the plate slides off the edge of
andrezito [222]

Answer: 0.27 m

Explanation:

The plate slides off the counter with the speed , u = 0.61 m/s in the horizontal direction.

The height of the counter is, y = 0.93 m

The initial speed in the vertical direction is 0 m/s. The plate falls under gravity in the vertical direction.

The time taken for plate to reach the surface is:

y = 0.5 gt²

⇒ t = √0.93 m / √4.9 m/s² = 0.44 s

In the same time, the plate would cover horizontal distance of:

x = u t = 0.61 m/s × 0.44 s = 0.27 m

Thus, the plate falls 0.27 m away from the base of the counter.

7 0
3 years ago
Other questions:
  • List three signs that could make you think that a chemical reaction was taking place. Explain how you got your answer.
    8·1 answer
  • What sort of trade off do you think engineers make between functionality safety and aesthetic when building a real bridge
    13·1 answer
  • We know that a ship, even though it is madeup of tonnes of iron, floats on water. How do you feel about the scientists who found
    8·1 answer
  • When a metal bonds with a nonmetal, they form a(n)
    11·1 answer
  • The universe is expanding, all light from all galaxies is redshifted. True False
    11·1 answer
  • Write an equation for the nth term of the arithmetic sequence: 64, 78, 92, 106, ...
    9·1 answer
  • Which of the following statements is false?
    10·2 answers
  • Help!!!!!!!!! Attached question<br><br><br> QUICK WILL GIVE BRAINLIEST
    14·1 answer
  • HELP ASAP!!!! WILL GIVE BRAINLIEST!<br><br> What is the function of mitochondria?
    14·1 answer
  • Calculate the electric field intensity<br>at a Point 15cm from a charge of 10 uc​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!