Please be legible in your answer. There are two questions already on Chegg.com b

Question

Please be legible in your answer. There are two questions already on Chegg.com but they are completely illegible. Please also show all workout for Part B and C.

Constants Part A Two 2.2-cm-diameter-disks spaced 1.8 mm apart form a parallel-plate capacitor. The electric field between the disks is What is the voltage across the capacitor? Express your answer with the appropriate units. V- 880 V Correct Significant Figures Feedback: Your answer 882 V was either rounded differently or used a different number of significant figures than required for this part.

Explanation / Answer

(A) V = E. d

V = (4.9 x 10^5) (1.8 x 10^-3)

V = 882 Volt

(B) C = e0 A / d

C = (8.854 x 10^-12)(pi (2.2 x 10^-2 / 2)^2) / (1.8x 1 0^-3)

C = 18.7 x 10^-15 F

Q = C V = 16.5 x 10^-12 C

Ans: - 16.5 x 10^-12, 16.5 x 10^-12 C

(C) gain in KE = q deltaV  

(9.109 x 10^-31)((2.5 x 10^7)^2 - v^2)/2 = (1.6 x 10^-19)(882)

(2.5 x 10^7)^2 - v^2 = 3.102 x 10^14  

v = 1.8 x 10^7 m/s

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