__________ is the prediction of special relativity that moving clocks run slow.
Fill in the blank(s) with correct word
[Ques. 2] t and b quarks are named
a. truth and beauty
b. up and down
c. top and bottom
d. Itchy and Scratchy
e. none of the above
[Ques. 3] Quarks have electric charges of magnitude
a. e
b. 1/3 e
c. 2/3 e
d. 0
e. none of the above
[Ques. 4] The electron
a. is an absolutely stable particle c. has zero mass
b. decays via the weak interaction d. is a lepton
[Ques. 5] In interactions taking place by the weak force, which of the following quantities are conserved?
a. electric charge
b. baryon number
c. mass-energy
d. strangeness
e. linear momentum
f. angular momentum (spin)
[Ques. 6] In interactions taking place by the strong force, which of the following quantities are conserved?
a. electric charge
b. baryon number
c. mass-energy
d. strangeness
e. linear momentum
f. angular momentum (spin)
[Ques. 7] A particle that interacts via the strong force is a(n)
a. lepton
b. baryon
c. meson
d. intermediate (or gauge) boson
e. hadron
[Ques. 8] Quarks come in what flavors?
a. up, down and strange c. red, green and blue
b. charm, top and bottom d. all of the above
[Ques. 9] The positron
a. is an antielectron
b. was the first antimatter particle discovered
c. is the same as a proton
d. all of the above
[Ques. 10] Which of the following are not relativistically invariant quantities?
a. the speed of light, c c. mass
b. time d. energy
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