Two coils have mutual inductance M = 4.15×10−4 H. The current i1 in the first coil increases at a uniform rate of 250 A/s. (a) What is the magnitude of the induced emf in the second coil? (b) Suppose that the current described is in the second coil rather than the first. What is the magnitude of the induced emf in the first coil?

What object a collides with object b and bounces back its final momentum is?

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?