what minimum frequency of light is needed to eject electrons from a metal whose work function is 5.4 x 10^-17

Explain what makes a passenger in a turning car slide toward the door. critical thinking

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain