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Look at the image below. Julian puts a heater in a block of copper and records the temperature of the block every minute for ten minutes. He multiplies the power of the heater by the amount of time that it has been on. What is he calculating?

Question

Look at the image below. Julian puts a heater in a block of copper and records the temperature of the block every minute for ten minutes. He multiplies the power of the heater by the amount of time that it has been on. What is he calculating?

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Solution

Julian is calculating the amount of energy transferred to the copper block. This is because the product of power (in watts) and time (in seconds) gives energy, which is measured in joules in the International System of Units.

Similar Questions

Julian put a heater into a block of copper and recorded the temperature of the block every minute for ten minutes. His results are below. In order to calculate the amount of energy transferred, he multiplied the time in seconds by the __________ of the heater. What word completes the sentence?

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Look at the apparatus below. Julian is finding the specific heat capacity of a block of copper. Once he turns on the power supply to the heater, which of the following will start to change?

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(e)     When the heater is supplied with 120 J of energy each second, the internal energy of theice increases by 45 J each second.Use the following equation to calculate the efficiency of the heater.

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