What is the fastest speed in the universe?
a. The speed of light.
b. The speed of sound.
c. 1.1620 104 mph.
d. The speed of the world's fastest rocket ship.
e. The speed of electrons in a wire.
Question 2
Photographers control the blurring in a picture by varying the shutter speed, i.e., the amount of time the film is exposed. A very sharp picture with little blurring implies which of the following:
a. the shutter speed is very fast.
b. the objects in the photograph are not moving.
c. both a. and b. are possible interpretations.
d. the camera is shaking.
e. the camera is out of focus.
Light-Gathering Power
Curved Spacetime and the Path of Light
Structure of the Early Universe
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