Which statement about Schwarzschild radii is true?
A) The Schwarzschild radius of a black hole can be defined only in binary systems.
B) The more massive the black hole, the smaller the Schwarzschild radius.
C) The Schwarzschild radius of a black hole depends only on its mass.
D) The Schwarzschild radius is used to describe the size of neutron stars.
C) The Schwarzschild radius of a black hole depends only on its mass.
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The centripetal acceleration of an automobile in uniform circular motion on a flat circular track is supplied by ______________
Fill in the blank(s) with correct word
A pencil partially submerged in a glass of water appears broken or offset because of
a. polarization. b. diffraction. c. interference. d. refraction.
After tying a string to a rock, you twirl the rock around above your head. If the string were to break, what path would the rock follow?
A. The rock will fall down immediately. B. The rock will go in a straight line before falling down. C. The rock will fly upward. D. The rock will complete the circle before falling down.
A projectile is projected from the origin with a velocity of 45.0 m/s at an angle of 30.0 degrees above the horizontal. What is the time it takes for the projectile to hit the ground?
A. 2.54 s B. 3.02 s C. 4.59 s D. 5.31 s E. 6.04 s