#7 (a) Determine the ratio qilg (b) What are the signs of g and q? A proton is p
ID: 1791700 • Letter: #
Question
#7
(a) Determine the ratio qilg (b) What are the signs of g and q? A proton is projected in the positive x direction into a region of uniform electric field E-(-6 90 × 10) N/C at t-o. The proton travels 7.90 cm as it comes to rest. 7. (a) Determine the acceleration of the proto magnitude (b) Determine the initial speed of the proton (e) Determine the time interval over which the proton comes to rest A proton moves at 5.20 ×105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 9.4010, N/C. Ignore any gravitational effects. (a) Find the time interval required for the proton to travel 4.50 cm horizontally (b) Find its vertical displacement during the time interval in which it travels 4.50 em horizontally, (Indicate direction with the sign of your answer )3,37mm (e) Find the horizontal and vertical components of its velocity after it has traveledExplanation / Answer
7. given proton is projected into positive x direction
E = -6.9*10^5 N/C at t = 0
proton travels d = 0.079 m and comes to rest
a. acceleration of the proton = a
a = qE/m = 1.6*10^-19*6.9*10^5/1.6*10^-27 = 6.9*10^13 m/s/s
b. initial speed of proton = u
2*a*d = u^2
2*6.9*10^13*0.079 = u^2
u = 3.30181*10^6 m/s
c. time over which proton comes to rest = t
u = a*t
t = u/a = 4.785*10^-8 s
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