The fission properties of the plutonium isotope 239pu are very similar to those of 235u. the average energy released per fission is 180 mev. during the cold war, the premier of the soviet union threatened the united states with 2.0 megaton 239pu warheads. (each would have yielded the equivalent of an explosion of 2.0 megatons of tnt, where 1 ton of tnt releases 4.2 x 109 j.) if the plutonium that fission has been 8.0% of the total mass of the plutonium in such a warhead, what was that total mass

Zamir and talia raced through a maze. zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east and 4 m north. talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. compare their displacements:

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d