A force of 1.82×10^-16 newton acts on a stationary electron . If mass 9.1×10^-31 kg for 10^-9 sec what will be the velocity of the electron at the end of this time?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.