Three charges, each of magnitude 2 nc, are at separate corners of a square of edge length 2 cm. the two charges at opposite corners are positive, and the other charge is negative. find the force exerted by these charges on a fourth charge q +3 nc at the remaining (upper right) corner. (assume the +x axis is directed to the right and the ty axis is directed upward.)

A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off

Aregular polygon has angkes of size 150° each.how many side has the polygon

Explain what happens at the saturation point when adding salt to water at room temperature.