The sun releases 3.83×10^28 J/s of energy as a result of nuclear reactions. Suppose that mass is perfectly converted to generate this energy. How much mass is the sun losing every second from this conversion? Give your answer using scientific notation in kilograms.

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal. find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Select all the correct answers. which three statements about electromagnetic radiation are true?