Suppose we have two positively charged particles a distance of 2 m apart from each other. Particle 1 has a charge of 6 C and particle 2 has a charge of 1.3 x 10^3 C. What amount of
electrostatic force exists between these two particles?
1.7 x 10^13 N
7.02 x 10^13 N
2.6 x 10^3 N

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s