Acharge is added to a small sphere by touching it with a probe that was raised to a 3000 v potential. the spheres used had a diameter of 3.7 cm’s and raised the entire surface to an electric potential of 3000 v’s. using some reasonable assumptions:
(a)how much charge was collected on the surface of these spheres
(b)what is the force (in newton’s) between these two spheres when they were 10 cm’s apart.
(c)assuming one is charged to +3000 v, and the other to -3000v, what would the capacitance be for this arrangement? (explain justifications for any simplifications)

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.

16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.