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An ice cube is placed in a microwave oven. Suppose the oven delivers 135 W of power to the ice cube and that it takes 35,200 J to melt it.

Part A: How long does it take for the ice cube to melt?

Answer :

Final answer:

Using the equation for power, we find it takes approximately 261 seconds (or roughly 4 minutes and 21 seconds) to melt the ice cube in the microwave oven.

Explanation:

The question relates to the concept of power, energy and time in physics when an ice cube is placed in a microwave oven. Knowing that power (P) = Work done or Energy transferred (E) / time (t), we can rearrange the equation to find the required time: t = E / P.

In this case, the energy required to melt the ice cube is provided as 35200 Joules (J) and the power delivered by the oven is 135 Watts (W). We substitute these values into the equation:

t = 35200 J / 135 W = approximately 260.74 seconds

Therefore, it should take around 261 seconds, or roughly 4 minutes and 21 seconds, to melt the ice cube in the microwave oven, given the conditions specified.

Learn more about Power and Energy here:

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