All categories

3 years ago

A coil of wire can become a temporary magnet if connected to a battery O True O False

Physics

1 answer:

GrogVix [38]3 years ago

4 0

Answer:

true

Explanation:

An Electromagnet is called as a temporary magnet, because electromagnet is made up of insulated copper wire wrapped around soft iron, which allows current to flow in it and at that moment iron gains it magnetic properties and when the current is switched off, then there will be no flow of current and hence iron loses its magnetic properties.

Hence it works temporarily as long as electric current flows in a conductor and hence known as temporary magnet. .

You might be interested in

This type of energy can be transferred in three different ways: 1) direction contact through collisions (also called conduction)

MA_775_DIABLO [31]

I would say nuclear.

4 0

3 years ago

Read 2 more answers

How do t cells differ from b cells

Natalka [10]

Both cells are formed in bone marrow.....but t cells matures into thymus....and b cells matures into bone marrow ! both helps in defense !

B cells can connect to antigens right on the surface of the invading virus or bacteria.
T- cells can only connect to virus antigens on the outside of infected cells.

for more info , comment !

5 0

2 years ago

Your 64-cm-diameter car tire is rotating at 3.3 rev/swhen suddenly you press down hard on the accelerator. After traveling 250 m

umka21 [38]

Answer:

0.76 rad/s^2

Explanation:

First, we convert the original and final velocity from rev/s to rad/s:

$v_o = 3.3\frac{rev}{s} * \frac{2\pi rad}{1rev} =20.73 rad/s$

$v_f = 6.4\frac{rev}{s} * \frac{2\pi rad}{1rev}=40.21 rad/s$

Now, we need to find the number of rads that the tire rotates in the 250m path. We use the arc length formula:

$D = x*r \\x = \frac{D}{r} = \frac{250m}{0.64m/2} = 781.25 rads$

Now, we just use the formula:

$w_f^2-w_o^2=2\alpha*x$

$\alpha =\frac{w_f^2-w_o^2}{2x} = \frac{(40.21rad/s)^2-(20.73rad/s)^2}{2*781.25rad} = 0.76 rad/s^2$

6 0

2 years ago

Read 2 more answers

Back 8 8. 9. 10. 11. 12. 13. 13

deff fn [24]

Answer:

i dont know the answer for this question sorry for the misunderstanding

Explanation:

3 0

2 years ago

If earth had no landmasses, then the idealized zonal precipitation pattern would have _______.

inysia [295]

If the planet earth has no land masses, the idealized zonal precipitation pattern would likely have regions that are wet in the equator and there will be more of mid-latitudes if the earth has no land masses at all and it does not exist.

7 0

3 years ago