What does a charge-coupled device do?
a.
converts the charge into audio sigr
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converts the electrical signal into a charge
0
converts the charge into an electrical signal
0
d.
converts an electrical signal into a visual signal
0
e.
converts an electrical signal into an audio signal
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In the winter, in order to keep the classroom steadily at 68 f before 10 pm, heating with an average rate of 42,000 btu/hr is provided. assume the outdoor temperature maintains at 32°f, determine the electrical power (kw) required to (a) operate a reversible heat pump (b) operate a real heat pump with a cop (7) of 4.5 and (c) operate an electrical-resistance heater.