Aforce of 230 n applied on a hydraulic lift raises an automobile weighing 6500 n. if the applied force is exerted on a 7.0 m^2 piston, what is the area of the piston beneath the automobile? a. 2.0 x 10^2 m^2 b. 4.0 m^2 c. 0.25 m^2 d. 0.0050 m^2

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?