Design a simple device to change the energy

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1. The mechanical energy of a bicycle at the top of a hill is 6,000j. The bicycle stops at the bottom of the hill by applying the brakes. If gravitational potential energy of the bicycle -Earth system is 2,000 j at the bottom of the hill, how much mechanical energy was converted into thermal energy?

2. Imagine that you are a pioneer. You have an ample supply of wood. To reduce your workload, you design a simple device to change the energy in wood into mechanical e.what would your device look like and how would it work?

Reference no: EM132513288

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