A+1.0 μc point charge is moved from point a to b in the uniform electric field as shown. which one of the following statements is necessarily true concerning the potential energy of the point charge? a) the potential energy increases by 6.0 × 10–6j. b) the potential energy decreases by 6.0 × 10–6 j. c) the potential energy decreases by 9.0 × 10–6 j. d) the potential energy increases by 10.8 × 10–6 j. e) the potential energy decreases by 10.8 × 10–6 j.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.