Question

Suppose the microwave’s power is 900w (1watt=1joule/sec). how long would you have to heat the coffee in part a?

Answer 1

The amount of time that is required for the microwave to heat the coffee is 34.4 seconds.

Given the following data:

• Microwave’s power = 900 Watts.

• Quantity of energy = 30,962 Joules.

How to calculate the time.

In order to determine the amount of time that is required for the microwave to heat the coffee, we would use this formula:

$Energy = power \times time$

Making time the subject of formula, we have:

$Time = \frac{Energy}{Power}$

Substituting the given parameters into the formula, we have;

$Time = \frac{30962}{900}$

Time = 34.4 seconds.

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