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A farmhand lifts a 23.5 kg bale of hay to a height of H=1.1 m to...

A farmhand lifts a 23.5 kg bale of hay to a height of H=1.1 m to get it into the back of a flatbed truck. How many bales of hay can the farmhand lift using the energy provided by a 485 C chocolate milkshake? The answer is N=8000 but how?

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Answer #1

The energy provided by chocolate milkshake is

Where is the unit for food calories.

Each food calorie = 1000 small calories, which is the unit of energy

For lifting each bale , energy needed is

Number of bales of hay that can be lifted with the provided energy is

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