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Artemon [7]
3 years ago
14

The work done by an engine equals one-fourth the energy it absorbs from a reservoir. True or False

Physics
1 answer:
Lunna [17]3 years ago
7 0

True IF the engine is 25% efficient. False otherwise.

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olasank [31]

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TRUE

Explanation:

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How did people years ago find out which side of a magnet was north and which was south?
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Bianco Inc. is struggling with the low productivity and high turnover of its employees. Management at Bianco consults Edward, a
Troyanec [42]

Answer:

Industrial-Organizational Psychology

Explanation:

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I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

5 0
2 years ago
PLS HELP ME ASAPPPP. 50 POINTSSS
dybincka [34]

Answer:

1.8 kj

Explanation:

Explanation:

A substance's specific heat tells you how much heat is required to increase the mass of

1 g

of that substance by

1

∘

C

.

The equation that establishes a rel;ationship between heat absorbed and change in temperature looks like this

q

=

m

⋅

c

⋅

Δ

T

, where

q

- heat absorbed

m

- the mass of the sample

c

- the specific heat of the substance

Δ

T

- the change in temperature, defined as the difference between the final temperature and the initial temperature of the sample

You have all the information needed to find the amount of heat required to increase the temperature of your sample of mercury by that many degrees Celsius, so just rearange the above equation and solve for

q

q

=

250.0

g

⋅

0.14

J

g

∘

C

⋅

(

62

−

10

)

∘

C

=

1820 J

I'll leave the answer rounded to two sig figs and expressed in kilojoules

q

=

1.8 kJ

Answer Explanation:

A substance's specific heat tells you how much heat is required to increase the mass of

1 g

of that substance by

1

∘

C

.

The equation that establishes a rel;ationship between heat absorbed and change in temperature looks like this

q

=

m

⋅

c

⋅

Δ

T

, where

q

- heat absorbed

m

- the mass of the sample

c

- the specific heat of the substance

Δ

T

- the change in temperature, defined as the difference between the final temperature and the initial temperature of the sample

You have all the information needed to find the amount of heat required to increase the temperature of your sample of mercury by that many degrees Celsius, so just rearange the above equation and solve for

q

q

=

250.0

g

⋅

0.14

J

g

∘

C

⋅

(

62

−

10

)

∘

C

=

1820 J

I'll leave the answer rounded to two sig figs and expressed in kilojoules

q

=

1.8 kJ

Answer link

4 0
2 years ago
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