A region of space has a uniform electric field generated by two parallel plates that carry equal but opposite charges. A point charge of magnitude |q| is moved by a hand from position A to position B at a constant speed. In that move, the charge experiences a positive change in electric potential and the work done by the hand on the charge is negative. What is the sign of the point charge and which of the two plates is positive one

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

J. j. thomson’s experiment disproved the theory that an atom

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s