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The amount of heat needed to raise the temperature of 10kg of…

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PHYSICS

The amount of heat needed to raise the temperature of 10kg of copper by 1K is its ____

A. specific heat capacity

B. latent heat

C. heat capacity

D. internal energy

QUICK ANSWER…

C

EXPLANATION…

Please note the difference between heat capacity and specific heat capacity.

While heat capacity is the amount of heat energy required to change the temperature of any amount of a substance by 1 kelvin, specific heat capacity on the other hand is the amount of heat energy required to change the temperature of 1 kilogram of a substance by 1 kelvin.

In this question, 10kg and not 1kg of copper is involved, so, the heat capacity is not specific.

Now for the right answer to the above question:

  1. Option A is incorrect. 1kg of copper would have made the heat capacity specific.
  2. Option B is incorrect. latent heat involves the heat required to change state.
  3. C is correct. heat capacity is the right answer.
  4. D is not the correct answer. The concept of internal energy is not within the scope of the subject matter.

HELPFUL TIPS…

You may please note these/this:

  • 1 kilogram of copper would have been esteemed as specific, but 10 kilograms or any other number (apart from one), is not specific.

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/culled from 2018 JAMB-UTME physics question 12 /

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