Answer to Question #133766 in Physics for joseph Mathew

Question

Assuming there is no change in the thermal energy store in the machine or air, what is the time the heater takes to transfer the energy the water?

Answer 1

The time it takes for the heater to transfer energy to the water can be found by dividing the thermal energy transferred to the water by power of the heater. The thermal energy of water depends on its specific heat capacity, mass, and temperature change:

$$Q=cm\Delta t.$$

The time is

$$t=\frac{Q}{P}.$$