What is the energy of a photon with the Compton wavelength (0.00437 nm)? (h = 6.63 × 10^?34 J?s, c = 3.00 × 10^8 m/s, and 1 eV = 1.60 × 10^?19 J)

a. 4.55E–14 eV
b. 2.84E+5 eV
c. 2.84E+1 eV
d. 3.52E–6 eV
e. 4.55E+5 eV


b

Physics & Space Science

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Two strings on a violin are stretched between two points 20.0 cm apart. The mass per length of the strings are the same. If the ratio of the frequencies of the fundamental modes is 1.5 to 1.0, then what is the ratio of the tensions in the strings?

A. 1.75 B. 1.88 C. 1.00 D. 1.25 E. 1.50

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The term observable universe refers to

A) the portion of the universe that we have so far photographed through telescopes. B) the portion of the universe that can be seen by the naked eye. C) the portion of the universe that is not hidden from view by, for example, being below the horizon. D) the portion of the universe that we can see in principle, given the current age of the universe.

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How long does it take a wheel that is rotating at 33.3 rpm to speed up to 78.0 rpm if it has an angular acceleration of 2.15 rad/s2?

A) 20.8 s B) 4.75 s C) 10.4 s D) 2.18 s E) 5.20 s

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A rectangle has a length of 1.323 m and a width of 4.16 m. Using significant figure rules, what is the area of this rectangle?

A. 5.50368 m2 B. 5.5037 m2 C. 5.504 m2 D. 5.50 m2 E. 5.5 m2

Physics & Space Science