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How far would 1 Kg of flour be lifted using one megajule of energy?
Wiki User
∙ 12y ago
Work = (force) x (distance)
Minimum Force needed to lift an object is the weight of the object.
Work = energy = (mass x gravity) x (height)
1,000,000 = (1 x 9.807) x (height)
Height = 1,000,000 / 9.807 = 101,968 meters = about 63.4 miles.
Technically, that's a slight overestimate. If we're dealing with an operation that
ranges that far away from the surface, then we also need to consider that ' g ',
the acceleration of gravity, is going to taper off somewhat during the ascent.
At 100 km above the surface, gravity is reduced by about 3.1% from its value
at the surface, so less force is required to keep lifting as the flour rises, which
is a fortunate coincidence, since the effectiveness of the yeast does progressively
decrease.
In any event, this problem is a perfect example of one that really needs to be
solved by integration, like so many others in our modern multicultural society.
But we'll leave off here, and stick with the the round estimate of 102 km.
Wiki User
∙ 12y ago
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When you make loaves of bread using wheat flour and corn flour. She uses 0.58kg of wheat flour to make 2 loaves of bread. If she uses a combined total of 1.34kg of flour to make the 2 loaves how much?
0.29 kg of wheat flour and 0.38 kg of corn flour per loaf. 0.58 and 0.76 = 1.34 kg
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How far could you lift a one-kilogram bag of flour using a megajoule of energy?
i have this same question in my science book
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