A particle with a half-integral spin is a
a. boson.
b. lepton.
c. fermion.
d. hadron.
e. muon.
c
Physics & Space Science
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Gamma rays travel faster than visible light.
a. true b. false
Physics & Space Science
Gravitational lensing of distant, faint irregular galaxies may be the key to:
A) mapping the dark matter. B) quasar energy production. C) understanding galactic rotation curves. D) understanding active galactic nuclei. E) determining galactic redshifts.
Physics & Space Science
The escape speed at the event horizon of a black hole is c, 300,000 km/sec
Indicate whether the statement is true or false
Physics & Space Science
Which of the following trips would consume more fuel for a given spacecraft?
1.a trip from the Earth to the Moon 2.a trip from the moon to the Earth 3.They both require the same amount of fuel. 4.It is impossible to determine.
Physics & Space Science