Answer:
2465 J/g
Explanation:
The amount of energy required to boil a sample of water already at boiling point is given by

where
m is the mass of the water sample
is the specific latent heat of vaporization of water
In this problem, we know


Solving the equation for
, we find

Answer:
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Red is the lowest because it has the shortest wavelengths
Work equals Force times Distance. So Work = 250 Newton’s * 5 meters Work = 1,250