The function key on a scientific calculator that will change a fraction to a decimal is:

A. ab/c
B. d/c
C. FÛD
D. Dec


Answer: C

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In a closed-loop system, the same fluid (water or water and antifreeze) will absorb heat from the ground in the winter and reject the heat to the ground in the summer.

Answer the following statement true (T) or false (F)

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10 moles of an ideal gas is confined in a piston-cylinder device. The gas is initially at T = 300 K and P = 1 bar. It is compressed isothermally to 10 bar. The gas has a heat capacity CV = (5/2)R.

A) What is the final volume of the gas? B) How much work is required to accomplish the compression? C) What is the change in internal energy of the ideal gas? D) What is the change in enthalpy of the ideal gas?

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Heat pumps can take advantage of the fact that subsoils are generally warmer in the winter and cooler in the summer than the atmospheric air

Indicate whether the statement is true or false

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How is the cooling anticipator normally wired to the cooling contacts?

What will be an ideal response?

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