An electric motor must have which of the following in order to work?
galvanometer, power source, secondary coil, or primary coil

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?