Energy and Momentum: In a certain nuclear reactor, neutrons suddenly collide with carbon nuclei, which have 12 times the mass of neutrons. In a head-on elastic collision with a stationary carbon nucleus, what fraction of its initial speed does the neutron have after the collision?
A. 11/12
B. 1/12
C. 11/13
D. 5/6
E. 10/13
Answer: C
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What is the rotational kinetic energy of the ball just before it hits the floor? A) 0.506 J B) 0.732 J C) 1.05 J D) 2.61 J E) This question cannot be answered without knowing the radius of the ball.
Light that is shifted toward the color red due to the light passing very near a compact object is called ____________________
Fill in the blank(s) with correct word
The big bang only created hydrogen and helium (with miniscule amounts of lithium) because____
a. gamma ray photons disrupt large nuclei more easily b. antimatter is attracted to large nuclei, leaving only light nuclei c. heavier elements can only be formed through fusion d. elements with an atomic weight of 5 or 8 are unstable e. temperatures were high enough to fuse hydrogen, but not helium
Diffraction is least when illumination is with
A) red light. B) blue light. C) an electron beam D) none of the above