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------------------------------------------------ An ice cube is placed in a microwave oven. Suppose the oven delivers 115 W of power to the ice cube and that it takes 32,200 J to melt it. How long does it take for the ice cube to melt?

Answer :

Final answer:

It will take 280 seconds for the ice cube to melt in the microwave oven assuming it's using its power effectively on the ice.

Explanation:

To find out how long it will take to melt the ice, we need to use the formula time (seconds) = energy (joules) / power (watts). Since it takes 32200 joules to melt the ice and the microwave delivers 115 joules every second (since 1 watt = 1 joule/second), the calculation would be 32200 joules / 115 watts.

When we do the math, we find that:

Time = 32200 J / 115 W = 280 seconds.

Therefore, it will take 280 seconds for the ice cube to melt in the microwave oven assuming it's using its power effectively on the ice.

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