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What SI units are used to measure power?

Answer 1

Luna Chen

The SI unit for power is the watt.

The SI base units are the source of the watt (W), which is the SI derived unit for power.

The speed at which something moves is called its velocity.

#v = "distance"/"time" = d/t#.

Velocity is measured in meters per second (m/s).

The rate at which an object changes its velocity is called acceleration.

#a = v/t#.

The units of acceleration are metres per second squared (#"m·s"^"-2"#).

Force is defined as mass times acceleration and is any influence that tends to alter an object's motion.

#f = ma#.

The newton (N) is the force needed to accelerate up a mass of 1 kg by #"1 m·s"^"-2"#.

#"1 N = 1 kg·m·s"^"-2"#

The action of a force across a distance is called work.

#w = f × d#.

The units of work are #"kg·m"^2"s"^"-2"# or #"N·m"#.

Energy is the ability to do work. It has the same units as work. The SI unit for energy is the joule (J). #"1 J = 1 N·m"#.

The amount of energy or work used per unit of time is called power.

"Power" is equal to "energy" / "time".

Watts (W) or joules per second (J/s) is the SI unit of power.

To sum up,

#"1 W = 1 J/s = 1 N·m/s = 1 kg·m"^2·"s"^"-3"#

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Answer 2

Avery Adams

Power is typically measured in watts (W) in the International System of Units (SI).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.