In the diagram, 91 = -2.00 x 10-5 C, = *3.80 x 10-6 C, and q3 = +5.30 x 10-5 C.
What is the electric potential energy Up for
charge 92? Include the correct sign (+ or -).
91
92
93
1.15 m
2.88 m
(Remember, energy is NOT a vector.) (Unit = J)
Joules (1)
Enter

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.