An interaction between a large and a small elliptical galaxy that results in a large spiral and a small elliptical galaxy takes:
A) several thousand years.
B) several hundred thousand years.
C) several million years.
D) several hundred million years.
E) several billion years.
D
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A tiny particle with charge + 5.0 ?C is initially moving at 55 m/s. It is then accelerated through a potential difference of 500 V. How much kinetic energy does this particle gain during the period of acceleration?
A) 1.0 × 104 J B) 2.5 × 10-3 J C) 100 J D) 2500 J
Magenta light is a mixture of
A) red and blue light. B) red and cyan light. C) red and yellow light. D) yellow and green light. E) none of the above
Wave velocity is inversely proportional to
a. period. b. wavelength. c. amplitude. d. all of these.
Laser light of 589 nm wavelength is shown through parallel slits forming a series of maxima on a screen 4.20 m away. If the distance between the central maximum and the first order maximum is 1.67 cm, what is the slit separation?
a. 
b. 
c. 
d. 
e. 