Which of the following is true concerning nuclear fusion?
a. it generally releases more heat than nuclear fission.
b. it involves the splitting of a nucleus into smaller fragments.
c. it can occur at room temperature.
d. all of the above

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)