after an initial push, a sled begins to move downhill at 1 m/a. a few seconds later it's kinetic energy. has increased. the sled now has 64 times more kinetic energy than it did right after the push. how fast is it going

Helium decays to form lithium. which equation correctly describes this decay?

Is this correct if not can u correct me

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.