When work is done, we know because there is __________________________________________.

Question

When work is done, we know because there is __________________________________________.

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Solution

When work is done, we know because there is a transfer of energy. In the context of physics, work occurs when a force is applied to an object, causing it to move. The formula for work is given by:

$W = F \cdot d \cdot \cos(\theta)$

where:

$W$ is the work done,
$F$ is the force applied,
$d$ is the distance moved by the object in the direction of the force,
$\theta$ is the angle between the force and the direction of motion.

Thus, if energy is transferred to an object, either by moving it against a force (like gravity) or through another interaction, we can conclude that work has been done.

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When work is done, we know because there is __________________________________________.

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