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mestny [16]
3 years ago
8

If 2,575J of heat is added to a 250g piece of silver, the change in temperature of the silver will be 43.6 °C? What is the speci

fic heat of of silver
Physics
2 answers:
qaws [65]3 years ago
7 0

Answer:

0.236 C

Explanation:

LUCKY_DIMON [66]3 years ago
6 0

Answer:

58.56°C

Explanation:

Brrrrrrrrrrrrrr

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The thermal efficiency of a power cycle operating in a reversible manner is found to be 50%. Assuming that the same 2 thermal re
inna [77]

Answer:

Explanation:

The thermal efficiency of a Power cycle \eta = \dfrac{Q_H -Q_c}{Q_H}

where;

\eta = 50\% = 0.5

Q_H = Heat \ flow \ from \ higher \ temperature

Q_c = Heat \ flow \ from \ lower \ temperature

0.5 = \dfrac{Q_H -Q_c}{Q_H}

0.5 Q_H = Q_H - Q_c --- (1)

Q_c = 0.5 Q_H         ---- (2)

The coefficient of performance is:

COP_R = \dfrac{Q_c}{Q_H -Q_c}

let replace the value of Q_c = 0.5 Q_H   in the above equation then;

COP_R = \dfrac{0.5Q_H}{Q_H -0.5 Q_H}

COP_R = \dfrac{0.5Q_H}{0.5 Q_H}

COP_R = 1

The

On the other hand,  the heat pump

COP_{HP} = \dfrac{Q_H}{Q_H -Q_c}

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

COP_{HP} = \dfrac{Q_H}{0.5Q_{H}}

COP_{HP} = \dfrac{1}{0.5}

COP_{HP} =2

t

5 0
3 years ago
If the period of the wave is 0.34 seconds what would be the frequency of the wave
Leokris [45]

Answer:

3 every second

Explanation:

3 0
3 years ago
a child is swinging on swing, describe what happens to both the kinectic energy and potential enegry of the child as she swings
Igoryamba

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.
5 0
3 years ago
Which are benefits of using nuclear power plants to generate electricity? Check all that apply.
lesya [120]
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.
</span>
<span>Nuclear power plants use renewable fuel.
</span>
<span>Nuclear power plants produce a large amount of energy for a small mass of fuel. Nuclear power plants produce no toxic waste products. 
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- 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).

</span>
3 0
3 years ago
Read 2 more answers
What is formed from at least two types of chemically combined atoms?
SashulF [63]
A compound. For example, hydrogen and oxygen atoms form water.
7 0
3 years ago
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