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Use k = 8.99 × 10^9 N·m²/C², ε₀ = 8.85 × 10^-12 C²/(N·m²), e = 1.60 × 10^-19 C. A +3.0 nC point charge is at x = 0 and a −1.0 nC point charge is at x = 0.80 m. At what position BETWEEN the two charges is the electric potential zero (V = 0 at infinity)? Give your answer in cm. Q12_figure.png

A +[a] μC point charge is at x = 0 and a +[b] μC point charge is at x = [d] m. At what position x between the two charges is the net electric field zero? Give your answer in cm, rounded to one decimal place. Q03_formula_figure.png

Use k = 8.99 × e+9 N·m²/C², ε₀ = 8.85 × e-12 C²/(N·m²), e = 1.60 × e-19 C.A very long, straight line of charge carries a uniform linear charge density of +[L] nC/m. What is the magnitude of the electric field [r] cm from the line, in N/C?

A uniform electric field of 400 N/C points in the +x direction. Point A is at (0, 0) and point B is at (0.30 m, 0.40 m). What is VB − VA? Q19_figure.png

A small positive charge is released from rest in an electrostatic field, and only electric forces act on it. Select ALL statements that are true.

Charges +q, +q, and −q sit at the three corners of an equilateral triangle. What is the direction of the net electric field at the center of the triangle? Q04_figure.png

Do you understand that the testing window for Test 2 opens at 3:00 pm on Monday, October 5, and that the testing window closes at 5:30 pm on Monday, October 5?

A random sample of 16 passenger fares on Amtrak between Chicago and Denver resulted in a mean fare of $180 and a standard deviation of $40. We are interested in estimating the Confidence Interval on the true “Population Mean” fare between Chicago and Denver on Amtrak. What is the 94% Confidence Interval estimate (in $) on the “Population Mean” fares between Chicago and Denver on Amtrak?

A random sample of 16 passenger fares on Amtrak between Chicago and Denver resulted in a mean fare of $180 and a standard deviation of $40. We are interested in estimating the Confidence Interval on the true “Population Mean” fare between Chicago and Denver on Amtrak. This estimation problem is a _____________________.

A travel agency reported that amount spent per day per person at a vacation destination follows a Normal distribution with a standard deviation of $235 and an average of $979. What is the amount (in $) that a folks spend, assuming the spending is in the lower 20% of per day per person spending distribution at the vacation destination?