You toss a ball to your friend. The ball reaches its maximum altitude
A) in half of the time it is in the air.
B) in more than half the time it is in the air.
C) in less than half the time it is in the air.
A
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Photography Optics: A simple digital camera lens with focal length fo = 3.00 cm perfectly focuses the image of an object on a CCD sensor located a distance 14.00 cm away from the lens. The object now moves away from the lens and the new distance between the lens and sensor is 13.00 cm. (a) By what amount did the object change its distance from the lens?(b) What is the new magnification?
A. (a) 0.08 cm (b) 3.33 B. (a) 0.03 cm (b) 0.30 C. (a) 990.00 cm (b) 0.23 D. (a) 12.22 cm (b) 4.33
In the Bohr model of the hydrogen atom
a. energy is quantized. b. the electron's angular momentum is quantized. c. the emission spectrum is quantized. d. the absorption spectrum is quantized. e. all of the above
A coil of wire is connected to a galvanometer. When a bar magnet is moved in and out of the coil, the galvanometer records a current. The current results because of __________
Fill in the blank(s) with correct word
Astronomers expect extrasolar planetary systems to have very different overall properties than those found in our solar system
Indicate whether the statement is true or false