Please answer ALL 5 PARTS (1-5) Please be SURE of ALL 5 PARTS!! Extra Credit (2

Question

Please answer ALL 5 PARTS (1-5) Please be SURE of ALL 5 PARTS!! Extra Credit (2 points each) 1. The event horizon of a black hole is best described as: (a) the location of a non-rotating black hole's singularity (b) the location of a rotating black hole's singularity (c) the boundary between the black hole and the rest of the universe (d) the inner edge of the black hole s chromospheres 2. W hat are the three fundamental results of Special Theory of Relativity (a) Length contraction (b) Time dilation (c) Mass increment (d) all of the above 3. Which is the closest galaxy to the Milky Way Galaxy? (a) Kepler (b) Andromeda (c) Hubble (d) Alpha Centauri 4. As predicted by the General theory of Relativity, which of the waves were recently detected by observation? (a) Electromagnetic waves (b) Acoustic waves (c) Pacific waves (d) Gravitational waves 5. Light Year is the unit of (a) Time (b) Distance (c) Force (d) Gravity

Explanation / Answer

1. event horizon - the boundary between the black hole and the rest of the universe

ans(c)

2. length contraction, time dilation and mass increment.

all with the same factor,- Y

Y = 1 / sqrt[1 - (v/c)^2]

Ans(d)

3. (B) Andromeda

4. d) Gravitational wave

5. light year is the distance traveled by light in one year.

ans(B)

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