.A force is used to lift a 75-kg mass to a height in 2 sec. It does 9800 J of worl
a. How high is it raised?

Can someone explain to me how to do this problem ?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)