A Fixed Amount of Ideal Gas Is Compressed Adiabatically

question 6

Short Answer

A fixed amount of ideal gas is compressed adiabatically.Which entry in the table below correctly indicates the sign of the work done,the change in the internal energy,and the heat exchanged with the environment?

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Definitions:

Payback

The length of time it takes for an investment to generate an amount of money equal to the cost of the investment, used as a basic measure of the investment's risk.

Discounted Payback

The period of time it takes for an investment’s cash flows, discounted at a particular rate, to cover its initial cost.

Discounted Payback Rule

A capital budgeting technique that determines the amount of time required for discounted cash flows from a project to repay the initial investment.

Pre-Specified Period

A defined time frame agreed upon or determined before the start of a certain process or event.