The ____________________ of a black hole is the radius from the black hole at which the escape velocity is equal to the speed of light
Fill in the blank(s) with correct word
event horizon
or
Schwarzschild radius
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Brewster's Angle: When light in air strikes the flat surface of a certain glass at 31.2° with the normal, the reflected ray is 100 percent polarized. What is the critical angle for the air-glass interface of this glass?
A. 52.7° B. 58.8° C. 21.4° D. 37.3° E. 68.6°
With no air resistance a projectile fired horizontally maintains its horizontal component of velocity because
A) no forces act on it. B) no horizontal forces act on it. C) of no initial vertical component of velocity. D) all of the above E) none of the above
As a solid is gradually heated, it first glows
A) red. B) yellow. C) white. D) blue.
What do we mean by inflation, and why might it have occurred at the end of the GUT era?
What will be an ideal response?