In what cases is the amount of heat negative?
| June 16, 2021 | education
The amount of heat Q that is necessary for heating a substance is determined by the formula: Q = C * m * (t2 – t1), where C is the specific heat capacity of the substance, m is the mass of the substance, t2, t1 are the final and initial temperatures.
The formula shows that when the body temperature increases t2> t1, then the amount of heat Q> 0 has a positive sign, the body receives the amount of heat.
When the body temperature decreases t2 <t1, then the amount of heat Q <0 will have a negative value, the body gives off the amount of heat.
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