Exam 7: Second Law of Thermodynamics: and You Cant Even Break Even

In one cycle of operation, the thermal energy input to a particular heat engine is 200 joules and the exhaust is 80 joules. The efficiency of this engine is

When you touch a warm pot on the stove,

Company X increases its profits every year by 1% million. Its growth in profits is

The "law of heat engines" is one form of

The basic energy transformation that takes place in all heat engines is

Does biological evolution violate the law of entropy, and why or why not?

Compared with the efficiency of a typical steam- electric generating plant, the efficiency of a typical hydro- electric generating plant is

The second law of thermodynamics implies that

The main reason for the large inefficiency of the automobile is

A day during which the atmospheric temperature was 40°C would be described as

When a fuel cell operates, the energy transformation within the cell itself is

The most efficient form of locomotion in the animal kingdom is

When the inside of a refrigerator is cooled, does thermal energy flow from hot to cold, or is it from cold to hot? Does this happen spontaneously, or is outside assistance required?

Which of the following is not a possible energy source for a steam- electric generating plant?

The biggest reason why heat engines are far from 100% efficient is

Suppose you viewed a movie that was running backwards. You would see lots of odd things happening: streams would flow uphill, and so forth. If these odd "backward- moving" things actually happened in nature, which principle or principles of physics would be violated?

Is it physically possible [even though it might be impractical to actually carry out] to drive a ship across the ocean by using the thermal energy in the surface waters of the ocean? That is, could this be done without violating any principle of physics?

Which of the following would be "linear" growth of your bank savings account?

Large amounts of material can often be seen rising from the cooling towers often seen at steam- electric power plants. These emissions are mostly

What is the work output of a heat engine whose thermal energy input is 400 J and whose exhaust is 300 J?