However, it is our opinion that this kind of computation will be too difficult for young people to understand. At the same time it could make a special project for a very capable student. In the discussion following the experiment we hope the data will be good enough to establish that the higher wattage bulbs heat the water in a shorter time. Within experimental error, the data should show that twice the power will heat the water in half the time. We hope this will give you one more opportunity to stress that power is work or energy per time.
More power just means that it can be done in less time.
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