(a) When rebuilding her car's engine, a physics major must exert 625 N of force to insert a dry steel piston into a steel cylinder. What is the magnitude of the normal force in newtons between the piston and cylinder?

N
(b)
What is the magnitude of the force in newtons she would have to exert if the steel parts were oiled?
N

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

Asimple electrochemical cell contains two electrodes.

Which of the following is tru about semi-conductors