What is 56 + (32.00)/(1.2465 + 3.45) written with the correct number of significant figures?
A) 62.8
B) 62.812
C) 62.81
D) 63
E) 62.8123846
Answer: D
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Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 8.00 m
A person is standing 12.0 m away from the wall, equidistant from the loudspeakers. When the person moves 3.00 m parallel to the wall, she experiences destructive interference for the second time. What is the frequency of the sound? The speed of sound in air is 343 m/s. A) 562 Hz B) 278 Hz C) 452 Hz D) 694 Hz E) 422 Hz
You would like to find the surface temperature of a star so you will need the star's _____________________ spectrum and use _____________ to find the temperature. Knowing the temperature, you can use _________________ to find the total energy the star radiates at its surface
Fill in the blank(s) with correct word
Venus rotates so rapidly that the dominant form of atmospheric circulation is powered by
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What happens to a sample of water when it is heated between 0°C and 4°C?
a. Its volume increases. b. Its volume is reduced. c. It vaporizes. d. Nothing changes except its temperature.