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2 years ago

The amount of heat needed to increase the temperature of a solid sphere of diameter 2D of the same metal from 4°C to 7°C

1 answer:

5 0

The amount of heat needed to increase the temperature of a solid sphere of diameter 2D of the same metal from 4°C to 7°C is is 8 times the initial amount of heat.

The temperature increment will lead to the increase in the internal energy of the object. This internal energy is the heat.

Given is the change in temperature ΔT = 7-4 =3°C., diameter D to 2D,

Q = Cp x ρ(4π/3)D³ x 3..................(1)

and Q' = Cp x ρ(4π/3)(2D)³ x 3

Q' = Cp x ρ(4π/3)8D³x 3..................(2)

Dividing both the equation, we have

Q' / Q =8

Q' = 8Q

Thus, the amount of heat needed to increase the temperature of a solid sphere of diameter 2D of the same metal from 4°C to 7°C is 8 times the initial amount of heat.

Learn more about heat.

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Use the <u>second law of Newton:</u>

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Resolving:

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3 years ago

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Answer:

Solution

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Check Your Learning

An ion of platinum has a mass number of 195 and contains 74 electrons. How many protons and neutrons does it contain, and what is its charge?

Answer:

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3 years ago

An eagle is flying horizontally at a speed of 4.10 m/s when the fish in her talons wiggles loose and falls into the lake 6.20 m

Sonbull [250]

Answer:

V=11.74m/s, 69.59°

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From newtons equation of motion ,we know that

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3 years ago