A certain CD-ROM disk can store approximately 6.0 × 102 megabytes of information, where 106 bytes = 1 megabyte. If an average word requires 9.0 bytes of storage, how many words can be stored on one disk?
A) 6.7 × 107 words
B) 5.4 × 109 words
C) 2.1 × 107 words
D) 2.0 × 109 words
A
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Plane Mirrors: You may have seen ambulances on the street with the letters of the word AMBULANCE written on the front of them, in such a way as to appear correctly when viewed in your car's rear-view mirror. (See the figure.) How do the letters appear when you look directly at the ambulance (not through the mirror)?
A. a B. b C. c D. d E. e
The oldest pulsars are billions of years old
a. True b. False Indicate whether the statement is true or false
A child on a playground swings through a total of 32 degrees. If the displacement is equal on each side of the equilibrium position, what is the amplitude of this vibration?
a. 32 b. 16 c. 64
Applications to Astronomy: The cosmic background radiation corresponds to a temperature of about
A. 1.4 K. B. 2.7 K. C. 8.0 K. D. 20 K.