Suppose you spend 30.0 minutes on a stairclimbing machine,
Chapter , Problem 69(choose chapter or problem)
Suppose you spend 30.0 minutes on a stairclimbing machine, climbing at a rate of 90.0 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 600 kcal have been burned at the end of the workout, what efficiency is the machine using in obtaining this result? If your actual efficiency is 0.18, how many kcal did you actually burn?
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