The coil of a generator has a radius of 0.12 m. When this coil is unwound, the wire from which it is made has a length of 7.50 m. The magnetic field of the generator is 0.40 T, and the coil rotates at an angular speed of 21 rad/s. What is the peak emf of this generator?

1400 kg car has a speed of 27 m/s. if it takes 7 s to stop the car, what is the impulse and the average force acting on the car?

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.