A weightlifter curls a 35 kg bar, raising it each time a distance of 0.60 m. How many times must he repeat this exercise to burn off the energy in one slice of pizza?  Assume 25% efficiency. Energy content of one slice of pizza is 1260 kJ.

Q: The total mass of a paratrooper - the person and all the gear - is 118kg. the paratrooper jumps out…

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Q: gasoline engine is running, an amount of gasoline containing 11,700 J of chemical potential energy…

A: Efficiency =W/Q

Q: A 68 kg cyclist is pedaling down the road at 15 km/h, using a total metabolic power of 480 W. A…

A: The total chemical energy (C.E) (metabolic power) can be converted into thermal energy (Th.E) and…

Q: Two distinct systems have the same amount of stored internal energy. Five hundred joules are added…

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Q: A 3.0 × 10-3 kg copper penny drops a distance of 50.0 m to the ground. If 65 percent of the initial…

A: Given data: Mass, m = 3.0 × 10-3 kg Height, h = 50m   Solution: The equation of the potential energy…

Q: At Niagara Falls, if 505 kg of water falls a distance of 50.0 m, what is the increase in internal…

A: Given Information:- Mass of the water m=505 kg Height of the water falls is h=50.0 m   Required:-…

Q: A student evaluates a weight loss program by calculating the number of times she would need to climb…

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Q: In order to keep a basement from flooding, it is necessary to pump 285 kg of water each minute from…

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Q: A Carnot air conditioner takes energy from the thermal energy of a room at 70 F and transfers it as…

A: The temperature are given in Fahrenheit. Convert these temperatures into Kelvin.

Q: A 50.0 - kg student evaluates a weight loss program bycalculating the number of times she would need…

A: Given:Mass of the student = 50 kgEnergy release by 1 kg fat = 3.77 X 107 J of chemical energyEnergy…