If you change the mass of a pendulum, how does this ultimately determine the duration of the swing? Explain. (I really need answer soon please!!)

The harmonic motion of a particle is given by f(t) = 2 cos(3t) + 3 sin(2t), 0 ? t ? 8. (a) when is the position function decreasing? (round you

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

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?