Solve the problem.An electron has a 1.6 x 10-19 C negative charge. How much work is done in separating two electrons from 2.4 pm to 7.3 pm?
A. 13 x 10-16 N ? m
B. 6.4 x 10-17 N ? m
C. 3.6 x 10-17 N ? m
D. 7.2 x 10-39 N ? m
Answer: B
Mathematics
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Write an equivalent expression in exponential form.ln e1/4 = 
A. e4 = e1/4
B. e1/4 = e1/4
C. e1/4 = 
D. ln 
= e1/4
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Find the quotient using long division.
A. x2 - 2 + 
B. -2x2 - 3x - 2 + 
C. -2x2 - 3x - 2
D. -2x2 - 3x - 2 + 
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Translate to an equation and solve.0.7 is 5% of what number?
A. 0.14 B. 140 C. 1.4 D. 14
Mathematics