Elements heavier than hydrogen are formed when light elements undergo nuclear fusion. fusion takes place within stars at temperatures nearing 108k. explain why this high energy is required for fusion to occur. a) high temperatures result in high kinetic energy that is converted to the nuclear binding energy. b) high temperatures result in the high kinetic energy needed to overcome the repulsive force of the two nuclei. c) high temperatures result in high kinetic energy that in turn creates a strong electrostatic force between the two nuclei. d) high temperatures result in the high kinetic energy needed to produce the strong force required to hold the nuclei together.

You and a friend (alex) are at a a tree-top adventure park .. . part of the course requires you to climb up a rope. you both climb the same rope in the same amount of time. however, the tension in the rope is greater when alex climbs. who did the most work? alex did - more tension means more force - more force means more work was done you did - less tension means less force - less force means more work was done to find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? when more work was done, the couch was moved less. when more work was done, the couch was moved further. when more work was done, the couch wasn't moved at all. when more work was done, the couch was moved the same distance.

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

What is the temperature in degrees celsius of a substance with a tempature of 49k