J. Robert Oppenheimer was
A) the head of the program to develop the world's first fusion bomb.
B) the inventor of radiation therapy.
C) the head of the program to develop the world's first fission bomb.
D) the discoverer of nuclear fission.
E) the head of the program to develop the world's first nuclear reactor.
Question 2
Which of the following has the largest momentum relative to Earth?
A) a tightrope walker crossing Niagara Falls
B) a pickup truck speeding along a highway
C) a Mack truck parked in a lot
D) a dog running down the street