A student moves a desk 12 m with a force of 40 N in 20 seconds, how much power does she have?
9,600 w 24w 480w 60w

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?