Answer:
b.only when the current in the first coil changes.
Explanation:
An induced current flow in the second coil only when there is a change in current in the first cool. A steady current will produce no change in flux (due to magnetic effect of a current) by the first coil, and according to Faraday, induced current is only produced when there is a change in flux linkage.
Answer:
35.13Mpa
Explanation:
It's shown in the picture attached
The force is not pulling in the direction that the box is moving.
Only the force in the horizontal direction does work.
The force in the vertical direction doesn't do any work, because
the box doesn't move through any vertical distance.
The horizontal force is 200(cos 45°) = 142 newtons
The vertical force is 200(sin 45°) = 142 newtons
If you pull the box 5 meters, then the amount of work done is
(force) x (distance) = (142 N) x (5 m) = 710 joules.
Power = (work done) / (time to do the work)
= (710 joules) / (5 seconds) = 142 watts .
Answer:
C. balancing the amount of energy that is taken in with the amount of energy that is released by the body
Explanation:
im smart
