A. 3.2 x 10‾²J
B. 1.6 x 10‾²J
C. 8.0 x 10^-4J
D. 4.0 x 10^-4J
Correct Answer: Option B
Explanation
W = cv²/2=(20×10^−6×40²)/2
= 1.6 x 10‾²J
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