In a vacuum, two particles have charges of q1 and q2, where q1 = +3.3c. they are separated by a distance of 0.24 m, and particle 1 experiences an attractive force of 4.1 n. what is the value of q2, with its sign?

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s