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?
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.