The connections between particles of matter, especially between atoms, are called

Rohit is trying to tune an instrument

Explain why electric current cannot exist if a current doesn't have a voltage source.

A12-g wad of sticky clay is hurled horizontally at a 100-g wooden block initially at rest on a horizontal surface. the clay sticks to the block. after impact, the block slides 7.5 m before coming to rest. if the coefficient of friction between the block and the surface is 0.65, what was the speed of the clay immediately before the impact?