A 1.70 m tall woman stands 5.00 m in front of a camera with a 50.00 cm focal length lens. Calculate the size of the image formed on flim

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

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.

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.