A 742 kg wrecking ball is attached to a crane 7 m above the ground. What is the gravitational potential energy of the wrecking ball at this height?
A.
1,038.8 J
B.
50,901.2 J
C.
5,262.6 J
D.
7,330.4 J

Stars x and y are both bluish main sequence stars. star x has a higher absolute brightness than star y. how do the two stars compare? explain

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

The safe load, l, of a wooden beam of width w, height h, and length l, supported at both ends, varies directly as the product of the width and the square of the height, and inversely as the length. a wooden beam 4 inches wide, 9 inches high, and 240 inches long can hold a load of 6810 pounds. what load would a beam 3 inches wide, 8 inches high, and 144 inches long, of the same material, support? (round off your answer to the nearest integer.)