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Q. What is the horizontal distance d_forearm between the elbow and the point where the weight of the forearm acts?

Q. In a proton linear accelerator a 9.5 mA proton current hits a target.

a) How many protons hit the target each second?

b) How much energy is delivered to the target each second if the protons each have a kinetic energy of 30 MeV and lose all of their energy in the target?

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Category:- Physics
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