How many degrees do you need to raise the temperature of a piece of lead weighing 200 g
| December 14, 2020 | education
How many degrees do you need to raise the temperature of a piece of lead weighing 200 g in order for its internal energy to increase by 280 J?
Q = cmT is a formula for heating a substance. Let’s translate m = 200 g into kg. It turns out: m = 0.2 kg. C (lead) = 130 J / kg (see the table). T = Q / cm => T = 280/130 * 0.2 = 10 degrees. If you need it in K (Kelvin), then the answer will be different: 273 + 10 = 283 K.
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