The coil of a generator has a radius of 0.17 m. when this coil is unwound, the wire from which it is made has a length of 9.00 m. the magnetic field of the generator is 0.22 t, and the coil rotates at an angular speed of 21 rad/s. what is the peak emf of this generator?

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

Two positive charges are equal. which has more electric potential energy?

How do i solve this physics problem?