A 500 N box is taking up a 5 meter ramp. If the input force needed is 350 N, what is the mechanical advantage?

Aball is thrown upward in the air, and its height above the ground after t seconds is h ( t ) = 57 t − 16 t 2 feet. find the time t when the ball will be traveling upward at 14.25 feet per second.

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

What types of radiation make up the electromagnetic spectrum?