A generator has a square coil consisting of 245 turns. The coil rotates at 84.5 rad/s in a 0.249-T magnetic field. The peak output of the generator is 65.7 V. What is the length of one side of the coil

0.141 m

Explanation:

Using Faraday law for the magnetic generator, we have the following formula for the turning coil:

where V = 65.7 V is the output voltage, N = 245 is the number of turns, A is the coil area. is the rate of change in magnetic flux, which can be calculated if we know that time it takes to rotate π/2 rad so B changes from 0.249 to 0.

Therefore:

Since this is a square coil, we can calculate the side length:

3. dark matter

empty space could also be a simple vacuum

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.