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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When salt is introduced to water, the temperature at which freezing occurs is
A) quite unaffected. B) lowered. C) increased. D) dependent on the shape of salt and ice crystals
The magnetic field at point P due to a 2.0-A current flowing in a long, straight, thin wire is 8.0 ?T. How far is point P from the wire? (?0 = 4? × 10-7 T ? m/A)
A) 10 cm B) 2.0 cm C) 5.0 cm D) 2.5 cm E) 4.0 cm
A container is filled with a mixture of helium and oxygen gases. A thermometer in the container indicates that the temperature is 22.°C. Which gas molecules have the greater average kinetic energy?
A) It is the same for both because the temperatures are the same. B) The oxygen molecules do because they are more massive. C) The helium molecules do because they are monatomic. D) The oxygen molecules do because they are diatomic. E) The helium molecules do because they are less massive.
Combining two sounds of equal intensity will give a sound level __________ higher than the sound level due to just one of them
Fill in the blank(s) with correct word