Four charged particles are placed so that each particle is at the corner of a square. The sides of the square are 15 cm. The charge at the upper left corner is -3.0 µC, the charge at the upper right corner is -6.0 µC, the charge at the lower left corner is -2.4 µC, and the charge at the lower right corner is -9.0 µC. a. What is the net electric force on the +3.0 µC charge? b. What is the net electric force on the -6.0 µC charge? c. What is the net electric force on the -9.0 µC charge?

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.