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Saavn Radio: Chill + co Secure https://session. masteringphysics.com/myct/fitemView?assignmentProblemiD-837485108offset-next previous9of9retun to assigm uestion 9 Express your answer using two significant figures. E- 23 10 N/C Two 2.5-cm -diameter disks face each other, 1.5 mm apart. They are charged to ±10 to My Answers Gve Up Correct Part B A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have to just barely reach the positive disk? Express your answer using two significant figures 10 m/s Submit My Answers Girep Incorrect: Try Again; 4 attempts remaining Provide Feedback

Explanation / Answer

here,

b)

the electric feild , E = 2.3 * 10^6 N/C

accelration , a = q*E/m

a = 1.6 * 10^-19 * 2.3 * 10^6 /( 1.67 * 10^-27) m/s^2

a = 2.2 * 10^14 m/s^2

let the initial speed be u

v^2 - u^2 = 2 * a * s

0^2 - u^2 = - 2 * 2.2 * 10^14 * 1.5 * 10^-3

u = 8.12 * 10^5 m/s

the initial speed must be 8.12 * 10^5 m/s

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