When an electron moving through air has 5 MeV of energy, what is the ratio of the rates of energy loss by bremsstrahlung to that by collision? What is this ratio for lead?

this one:

as we gain mass the force of gravity on us increases.

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answer: the correct answer is   air pressure at the top of mount everest is higher than at the bottom of the grand canyon.

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explanation:

positive reinforcement? ?

490 n

f=125n a=2.5m/s2