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20.19 20.19 Protons have charge -e and mass 1.67 x 10 kg. Electrons have charge

ID: 1790303 • Letter: 2

Question

20.19 20.19 Protons have charge -e and mass 1.67 x 10 kg. Electrons have charge -e and mass 9.11 x 10 Ikg A bearm af protons is accelerated theough a potential diffenence eld traveling 3.75x i0°m/s 1ara Seve Irv-I mih-v/ Vanmis on7 as.unv) 167x 10 kg seluted problem-soving tps and strategies, you may want o Sigificant Figures than required for this part. If you need tha Feedback: Your answer 45 9-10 3·5p.10, T was either rounded diferenty or used a diferent number of result for any in this item, keep all the digits and round as the final step before submiting you Part B What magnetic field would be needed to produce a path with the same diameter f the particles were electrons having the same speed as the protons? E. B, O Type here to search 4x2017 5 7

Explanation / Answer

B)

m = mass of electron = 9.1 x 10-31 kg

r = radius = diameter/2 = 0.855 m

q = charge = 1.6 x 10-19

B = magnetic field required = ?

v = speed = 3.75 x 105 m/s

using the equation

r = mv/(qB)

0.855 = (9.1 x 10-31) (3.75 x 105)/((1.6 x 10-19) B)

B = 2.5 x 10-6 T