What happens to energy when a drill is operated?

When a drill is operated, it converts electrical energy or mechanical energy into useful work to cut or bore through materials. However, not all of the energy is efficiently utilized for this purpose. A significant portion of the energy is lost as waste energy, primarily in the form of heat due to friction between the drill bit and the material being drilled, as well as some energy being dissipated as sound waves produced during the drilling process. This phenomenon is common in many machines, where energy inputs lead to both useful work output and various forms of energy that are not harnessed for the intended task. Therefore, the assertion that some energy is wasted as heat and sound accurately reflects the realities of energy transfer and conversion in a drilling operation.