A steel drill with a mass of 100 g heated up during operation from 15 to 115 C.
| February 17, 2021 | education
A steel drill with a mass of 100 g heated up during operation from 15 to 115 C. How much energy was consumed by the motor to heat only the drill.
To calculate the energy consumed by the motor to heat the drill, we use the formula Q = cm (t2 – t1); c – specific heat capacity of steel.
Q = 500J / kg * ° C * 0.1kg (115 ° C – 15 ° C) = 5000J.
Answer: it took 5000J to heat only the drill.
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