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sindy35111
16.06.2021 •
Physics
There are 2 pans of water, one has 10 mL in it and one has 500 mL. You add 3000 joules of energy, which one has the bigger change in temperature?
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Ответ:
The change in temperature is bigger for the first pan which contains 10 mL of water.
Explanation:
in one pan
mass, m = 10 mL = 10 g
in another pan
mass, m' = 500 mL = 500 g
Heat, H = 3000 J
Specific heat of water, c = 4.2 J/gC
Let the change in temperature in first pan is T and in the second pan is T'.
Use the formula of heat
H = m c T
For the first pan
3000 = 10 x 4.2 x T
T = 71.42 C
For the second pan
3000 = 500 x 4.2 x T'
T' = 1.42 C
So, the change in temperature is bigger for the first pan.
Ответ: