The kinetic energy of a motorcycle and rider is 60,200 J. If their total mass is 320 kg, what is their speed (in m/s)?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?