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efficiency of heat energy

1. The mass of an electron is 9.11x10^-31 kg. The mass of one (negative) coulomb of electron (in kilograms) is equal to?

2. If a charge of 8.4 microcoloumbs is evenly distributed around a ring of radius 0.31m, the charge per unit length (in micro c/m) will be?

3. An engine takes in 4.7 calories of heat and discharges 3.5 calories of heat. What is its efficiency?

4. A certain otto cycle has a 7.0 compression ratio. if the working fluid has a "gamma" of 1.4 what is its efficiency?

Solution Summary

It provides examples of calculating the efficiency of heat energy. It also shows how to find the uniform charge density. The solution is detailed and has a '5/5' rating.