Bookma right State x Pearson MyLab and Mastering x Course Home 7b2dOfe5d1#10001

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Bookma right State x Pearson MyLab and Mastering x Course Home 7b2dOfe5d1#10001 WINGS Single Variable Ca.. DThe Bro Code Microsoft Office H.. Amazon C Cheg9 Study S General Physics I Course Home CHW5 Problem 27.73 A 4.8-mm-diameter proton beam carries a total curment of 1.0 mA. The current density in the proton beam, which increases with distance from the center, is given by J Jege (r/R), where R is the radius of the beam and Jodg is the curment density at the edge. Part A How many protions per second are delivered by this proton beam? Express your answer using two significant figures. N- protons per second Submit Previous Answers Request Answer X Incorrect Try Again; 5 attempts remaining Part B Determine the value of Jed- Express your answer to two significant figures and include the appropriate uni JgValue Units Submit Request Answer

Explanation / Answer

1)

Number of photons per second, n = I/e = 0.001 /(1.6 x 10^-19) = 6.25 x 10^15 photons/s

2)

Current density, J = 3I / [2 pi R^2] = (3 x 0.001)/ [2 pi (0.0024)^2] = 82.89 A/m2

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