Question

An old washing machine produces 275 joules of mechanical work output and utilizes 1375 joules of energy input. How much energy is discharged as heat loss?

a) 0.23 joules
b) 5.0 joules
c) 1,100 joules
d) 1,250 joules

Answer 1

The energy discharged as heat loss by the washing machine is the difference between the energy input and the mechanical work output, which is 1100 joules, corresponding to option (c).

Step-by-step explanation:

The question involves calculating the energy discharged as heat loss by an old washing machine. Given that the machine produces 275 joules of mechanical work output and utilizes 1375 joules of energy input, we can determine the heat loss using the principle of conservation of energy. The energy not used for work is transformed into heat. Therefore, the heat loss can be calculated by subtracting the work output from the energy input:

Energy input - Work output = Heat loss

1375 joules - 275 joules = 1100 joules

Thus, the energy discharged as heat loss is 1100 joules, which corresponds to option (c).