What two things are similar with an electric generator and an electric motor
Both create electricity

Both have a magnetic field present

Both require an ferromagnetic core

Both have a rotating coil

An object has a weight of 500 on earth what is the mass of this object

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?