A cart initially traveling at +10 m/s reaches the bottom of a hill. It accelerates up it at -2.0 m/s2. What is the cart's velocity 8.0 s after it starts accelerating?

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

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.

The radius of an atom is closest in size to a