7. A 1 cm long screw that is 62.5% efficient in pulling a 500 N board to a wall when
the carpenter used 80 N of force in turning it. What is the thread length of the
screw?

the energy generated by an individual's metabolism is calculated in met (metabolic equivalent of task). the met is the ratio of the work metabolic rate to the resting metabolic rate. one met is illustrated as 1 kcal per kilogram per hour, and is probably equal to the energy cost of sitting quietly.

1 met is equal to 1.162 watt per kg

1 kg is equal to 1000 grams

as the person weighs 80000 gm, that is, 80 kg.

therefore, 80*1.162 = 92.96

thus, the person expends 92.96 watts of power while at rest.

the correct answer was location c, because earth is tilted away from the sun at this time

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