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Marshall and Graham both lift a 50 lb. weight. Graham lifts his weight in 5 seconds. Marshall takes 7
seconds. Which of the following statements is true?
Graham had more power than Marshall.
Marshall had more power than Graham.
Both boys had equal amounts of power.

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario

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