How much voltage is required to run 0.025 A of current through a 36 Ω resistor?

A. 6.9 x 10^-4 V

B. 1.4 x 10^3 V

C. 1.1 V

D. 0.90 V

(the answer is D. 0.90 V)

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.