An organ pipe is open at both ends. The frequency of the fourth mode is 316 Hz higher than the frequency of the third mode. If the speed of sound is 340 m/s, then what is the length of the organ pipe?
A. 53.8 cm
B. 59.8 cm
C. 60.3 cm
D. 62.8 cm
E. 64.7 cm
A. 53.8 cm
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By itself, the Doppler technique provides a measure of a planet's
A) minimum mass. B) orbital radius. C) orbital eccentricity. D) all of the above
The Moon's average distance from Earth is about ______________ km
Fill in the blank(s) with correct word
The calibration used to build a distance scale reaching from the size of Earth to the most distant visible galaxies is referred to as the__________
A) distance grid B) distance model C) distance candle D) distance ladder
The diagram below illustrates two stars in a visual binary system and the center of mass of this system. Based on this diagram, what is the ratio of the mass of star A to the mass of star B?
a.
2 to 1
b.
1 to 2
c.
2 to 3
d.
3 to 2
e.
1 to 3