Specific Heat Physics

What  is the formula to calculate heat energy required to raise the temperature of any substance?

• Q=mc∆t

• Q=mc

• Q= ½mv

• m=QC

The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?

• 66.5 J

• 665 J

• 0.0266 J

• 0.665 J

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Which will heat up faster?

• copper

• granite

• iron

• basalt

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Which of the following best explains why the sand at the beach is hotter than the water?

• Sand has a higher specific heat than water.

• Sand has a lower specific heat than water.

• There is more water than sand at the beach.

• There is more sand than water at the beach.

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Specific heat of water is  4.18 J/g°C. Specific heat of wood is 1.760 J/g°C What material needs more heat energy to raise the temperature?

• Water

• Wood

• Both are same

If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest?

• 100 mL

• 1000 mL

• They both heat up at the same speed

• They cool down.

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The principle of method of mixtures

• Heat gain by hot body is equal to heat lost by cold

• Heat gain by heavier body is equal to heat lost by lighter body

• Heat gained by cold body is equal to heat lost by hot body

• All the above

Specific heat of water in cal/g°c

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Resultant temperature of a mixture of of 20 g ice at 0°c and 20 g water at 50 °c

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The temperature of an unknown piece of metal with a mass of 30.00 g changes from 25.0 °C to 35.0 °C when the metal absorbs 350.0 J of energy. What is the specific heat of the metal?

• 1.17 J/g°C

• -1.17 J/g°C

• 0.857 J/g°C

• -0.857 J/g°C

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