a loaded ski lift pulls 20 chairs with people sitting in them up 200 meters. each chair with a person has 250 kg of total mass. how much work does it take to lift them?
a. 490,000 j
b. 980,000 j
c. 9,800,000 j
d. 1,000,000 j

What is the speed of an object at a given moment?

In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length