Answer:
Explanation:
The thermal efficiency of a Power cycle 
where;




--- (1)
---- (2)
The coefficient of performance is:

let replace the value of
in the above equation then;



The
On the other hand, the heat pump

By replacing equation (1) into the above equation; we have:



t
Answer:
The K.E is maximum when the child is at the vertical position and the P.E is maximum at the extreme deviated position from the vertical.
Explanation:
- A child is swinging on swing up and down has both kinetic and potential energy.
- The total mechanical energy of the system is conserved throughout the system. At any instant the total mechanical energy is given by,
E = K.E + P.E
- The K.E is maximum when the child is at the vertical position.
- The P.E is maximum at the extreme deviated position from the vertical.
- And when K.E is maximum P.E becomes minimum and vice versa as per the law of conservation of energy.
Below are the benefits <span>of using nuclear power plants to generate electricity:
</span><span>Nuclear power plants use simple power plant designs not vulnerable to human error or natural disasters.
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<span>Nuclear power plants use renewable fuel.
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<span>Nuclear power plants produce a large amount of energy for a small mass of fuel. Nuclear power plants produce no toxic waste products.
</span><span>
- The outflows of nursery gasses and in this manner the commitment of atomic power plants to an Earth-wide temperature boost is accordingly moderately little. The era of power through atomic vitality lessens the measure of vitality produced from non-renewable energy sources (coal and oil). Less utilization of petroleum products implies bringing down ozone-depleting substance outflows (CO2 and others).
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A compound. For example, hydrogen and oxygen atoms form water.