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The man having the weight of 150 lb is able to run up a 15-ft-high flight of stairs in 4 s. Determine the power

The man having the weight of 150 lb is able to run up a 15-ft-high flight of stairs in 4 s. Determine the power generated. How long would a 100-W light bulb have to burn to expend the same amount of energy? Conclusion: Please turn off the lights when they are not in use! 15 ft

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