A Proton Initially Moves Left to Right Long the X

question 8

Multiple Choice

A proton initially moves left to right long the x axis at a speed of 2.00 x 10³ m/s.It moves into an electric field,which points in the negative x direction,and travels a distance of 0.200 m before coming to rest.If the proton's mass and charge are 1.67 x 10^-27 kg and 1.60 x 10^-19 C respectively,what is the magnitude of the electric field?

• A)28.3 N/C
• B)13.9 N/C
• C)0.104 N/C
• D)0.038 N/C

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