The answer explains how to calculate power output, time to lift snow, and waste heat generation while shoveling snow.
Power output: Useful power output can be calculated using the formula: Power output = efficiency x Metabolic power. In this case, if the person metabolizes food at 800 W, and the efficiency of shoveling snow is low, we can calculate the useful power output.
Time to lift snow: To determine how long it will take to lift 3000 kg of snow 1.20 m, we can use the work-energy theorem along with the given information to find the time taken.
Waste heat generation: The waste heat transfer in kilojoules that will be generated during the shoveling process can be calculated by understanding the energy conversions involved in the activity.
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