The discovery of the gravitational lens effect for quasars
a. shows that quasars were located within the local group of galaxies.
b. shows that quasars were giant planets in our solar system.
c. shows that quasars are much further away than the distant galaxy that forms the gravitational lens.
d. proves Newton's theory of gravitation by showing that the photon was affected by gravity.
e. proves the existence of super massive black holes at the center of active galactic nuclei.
C
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If it takes 8.0 N to stretch a spring 6.0 cm, and if the spring is then cut in half, what force does it take to stretch one of the halves 3.0 cm?
a. 2.0 N c. 8.0 N b. 4.0 N d. 16 N
At what speed relative to the lab will a 0.272-kg object have the same momentum as a 1.30-kg object that is moving at 0.515c relative to the lab?
A) 0.944c B) 0.922c C) 0.981c D) 0.592c
The Doppler technique for planet detection has found Earth-like planets around nearby Sun-like stars
Indicate whether the statement is true or false
A neutron star ________ rapidly
Fill in the blank(s) with correct word