Final answer:
One horsepower of mechanical power is equivalent to 746 watts of electrical power, a measurement commonly used for engines and electric motors. The watt is the SI unit for power, equating to 1 Joule/second, and larger outputs are often measured in kilowatts.
Step-by-step explanation:
One horsepower of mechanical power is equal to 746 watts of electrical power. This unit of power measurement is often used to express the output power of engines, electric motors, and tools. It’s also interesting to note that the human body is capable of producing power as well. During strenuous activities, the body's power output can exceed one horsepower momentarily, highlighting the physiological capabilities of humans in terms of energy conversion.
The SI unit for power is the watt (W), which is equivalent to 1 Joule/second. To relate to larger power outputs, the kilowatt (kW), equal to one thousand watts, is often used. Hence, it's important to remember that when converting from horsepower to watts, the equivalence stands at 1 hp = 746 W.