Work, energy, and power are closely related concepts that describe how forces cause changes and how quickly those changes happen. Understanding these
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Why does a brighter bulb consume more power than a dimmer one?
A brighter bulb produces more light, which requires converting more electrical energy to light and heat per second. Power is the rate of energy conversion, so a brighter bulb has higher power consumption.
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Is work the same as energy?
No, work is the process of transferring energy by applying force over distance, while energy is the capacity to do work. Work is how energy changes from one form or location to another.
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If energy is conserved, why do moving objects eventually stop?
Energy is conserved globally, but mechanical energy decreases locally due to friction and air resistance, which convert kinetic energy to heat. The total energy remains constant when including heat energy.
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