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wariber [46]
3 years ago
9

The heat pump is designed to move heat. This is only possible if certain relationships between the heats and temperatures at the

hot and cold sides hold true. Indicate the statement that must apply for the heat pump to work.A. Q_{\rm h} < Q_{\rm c} and T_{\rm h} < T_{\rm c}.B. Q_{\rm h} > Q_{\rm c} and T_{\rm h} < T_{\rm c}.C. Q_{\rm h} < Q_{\rm c} and T_{\rm h} > T_{\rm c}.D. Q_{\rm h} > Q_{\rm c} and T_{\rm h} > T_{\rm c}.
Physics
1 answer:
Pie3 years ago
7 0

Answer:

There are no answer chooses to this question

Explanation:

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A ball is thrown horizontally from the top of a building 100m high. The ball strikes the ground at a point 120 m horizontally aw
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26.54 m/s  is the magnitude of its velocity just before it strikes the ground

h=100m,v=20m/s,g=9.8m/s

time it takes to reach the ground,

[t=\sqrt2h/g],[=\sqrt2*100/9.8=4.51s]

x= 120m

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v= x/t

v= 120/4.52

v= 26.54 m/s

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1 year ago
Most of the countries in Europe use SI measurments. How could this be a problem if you went on a trip to Europe?
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Not knowing how to convert the type of measurement according to your way of learning from where ever you come from.
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2 years ago
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Prior Knowledge Questions (Do these BEFORE using the Gizmo.)A buoy is anchored to the ocean floor. A large wave approaches the b
dimaraw [331]

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2 years ago
If the man falls with his knees and ankles locked, the only cushion for his fall is a 0.480 cm give in the pads of his feet. Cal
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Answer:

The average force exerted on the man by the ground therefore is 153.319.53 N

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Given the following information

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F = Force required to break the fall

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= 0.5×75 kg ×(4.43 m/s)²/(0.0048 m) = 153319.53 N

The average force exerted on him by the ground is therefore

= 153319.53 N.

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A 1.70 m long string has a standing wave with 2 loops at a frequency of 38.4 Hz. What is the speed of the waves in the string? (
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