List the physics principles that make heat pump operation possible

What will be an ideal response?


Heat exists down to absolute zero, which is –460°F.
Heat will only flow from a higher temperature to a lower temperature Gases become warmer when compressed.
Most matter can be in a solid (ice), liquid (water) or gas

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A power-limited Class 3 power supply must never exceed _________.

A. 30V, 100VA B. 150V, 100VA C. 300V, 100VA D. 600V, 1000VA

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A number plus 10 equals 15. Find the number.

A. 4 B. 5 C. 6 D. 7

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What would you do when glue overflows onto the skin in the application of nail tips:

What will be an ideal response?What will be an ideal response?What will be an ideal response?

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The subsequent problems deal with the circuit shown below. Assume that the diode is ideal (i.e., has a 0V forward bias voltage).If VA=2V and VB=5V, what is the steady state value for current I?

A. ?1/3000 A B. ?1/3 mA C. 0 D. ?3000 A E. ?3 mA

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