Nellie hangs from a pair of ropes at an angle. Tension in the ropes depends on the
A) length of the ropes.
B) angle of the ropes.
C) both of these
D) neither of these
Answer: B
Physics & Space Science
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The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.00-m string is 308 N, and one-half wavelength occupies the string, what is the mass of the wire?
a. 0.025 kg b. 0.049 kg c. 0.051 kg d. 0.081 kg e. 0.037 kg
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Contrast image formation in reflectors and refractors
What will be an ideal response?
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A diffraction grating with 11 800 lines/cm will exhibit the first-order maximum for light of wavelength 416 nm at what angle? (1 nm = 10?9 m)
a. 0.513° b. 0.281° c. 58.8° d. 29.4° e. 15.1°
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List the following bonds in order of increasing polarity
A) N-O < N-N < N-F < H-F B) N-N < N-O < N-F < H-F C) H-F < N-F < N-O < N-N D) N-N < N-O < H-F < N-F
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