To find the power of the CD player, we can use the formula for power, which is energy divided by time. Here, the energy used is 60,000 joules and the time is 30 minutes, which is 1,800 seconds (30 minutes × 60 seconds/minute). Therefore, power = 60,000 joules / 1,800 seconds = 33.33 watts. Thus, the power of the CD player is approximately 33.33 watts.
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