When the handle of a tuning fork is held solidly against a table, the time the fork keeps vibrating becomes
A) longer.
B) shorter.
C) remains the same
Answer: B
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Standing Waves on a String: A guitar string 0.65 m long has a tension of 61 N and a mass per unit length of 3.0 g/m.(a) What is the speed of waves on the string when it is plucked?(b) What is the string's fundamental frequency of vibration when plucked?(c) At what other frequencies will this string vibrate?
What will be an ideal response?
Suppose an elliptical galaxy is so far away that we cannot see even its brightest stars individually. Which of the following techniques might allow us to measure its distance?
A) We could use parallax. B) We could use Cepheid variables as standard candles. C) We could use a white dwarf supernova as a standard candle. D) We could use radar ranging.
A capacitor in a single-loop RC circuit is charged to 85% of its final potential difference in 2.4 s. What is the time constant for this circuit?
A. 1.5 s B. 1.3 s C. 1.7 s D. 1.9 s E. 2.9 s
Like Jupiter's, Saturn's rotation is fast and differential, with the ________ rotating fastest
Fill in the blank(s) with correct word