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3 years ago

a hairdryer is used for 600 seconds to dry hair. it has a 750 watt rating. how much work did the hairdryer do

Physics

1 answer:

olga2289 [7]3 years ago

3 0

The amount of work done by the hairdryer is equal to 450 Kilojoules.

Given the following data:

Time = 600 seconds

Power = 750 watt

To determine the amount of work done by the hairdryer:

Mathematically, the work done by an object with respect to power and time is given by the formula:

$Work\;done = power \times time$

Substituting the given parameters into the formula, we have;

$Work\;done = 750 \times 600$

Work done = 450,000 Joules

Note: 1000 Joules = 1 Kilojoules.

Work done = 450 Kilojoules.

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