Question 8 (25 points) Three point charges are located on the x-axis at the following positions: Q1 = +7.00
uC is at x = 1.00 m, Q2 = +3.00 uC is at x = 0.00, and Q3 = -5.00 uC is at x = -3.00
m. What is the magnitude of the electric force on Q2? (k = 1/4nɛO = 9.0 x 10^9 N.
m2/C2)

What quantity do units represent in value

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.

Which phrase describes the paleo-indians of prehistoric arkansas? a. grew cornb. lived in cliff dwellings c. crafted beautiful potteryd. hunted with stone-tipped spearswhich phrase describes native arkansas from the woodland traditiona. developed widespread agricultureb. hunted mastodon and woolly mammothc.built rectangle-shaped homesd. traded salt with other groups