Wobbles in the path of Uranus led to the discovery of

A) Jupiter.
B) Mars.
C) Neptune.
D) all of the above
E) none of the above


Answer: C

Physics & Space Science

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A new Moon appears in the sky just before the time of a

A) solar eclipse. B) lunar eclipse. C) both of these D) neither of these

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Shapley found the globular clusters were strongly concentrated toward Sagittarius

Indicate whether the statement is true or false

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Two adjacent sources each emit a frequency of 800. Hz in air where the velocity of sound is 340. m/s. How much farther back would the first source have to be moved so an observer in front of the sources would hear no sound?

What will be an ideal response?

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Waves on a String: A wire that is 1.0 m long with a mass of 90 g is under a tension of 710 N. When a transverse wave travels on the wire, its wavelength is 0.10 m and its amplitude is 6.5 mm. What is the frequency of this wave?

A. 890 Hz B. 920 Hz C. 1000 Hz D. 1200 Hz E. 1500 Hz

Physics & Space Science