The magnetic flux through a certain coil is given by φm = (1/50π) cos 100πt where the units are SI. The coil has 100 turns. The magnitude of the induced EMF when t = 1/200 s is:.
A. 1/50π V
B. 2/π V
C. 100 V
D. zero
E. 200 V

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 3.00 ms . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?