Suppose that we increase an N-atom Einstein solid’s value of q = U/? from q to q + 1. By what factor does the value of its multiplicity ? increase? (Choose whichever result is the closest, assuming that q >> 1 and N >> 1.)
A. q
B. 3N
C. q/3N
D. 3N/q
E. (q + 3N)/q
F. (q +3N)/(qN)
E. (q + 3N)/q
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Red giants
A) are mature stars that are fusing hydrogen into helium in their cores B) are dead stars C) have exhausted their nuclear fuel and are in the process of dying D) are in the process of forming
A 15-?F capacitor and a 30-?F capacitor are connected in series, and charged to a potential difference of 50 V. What is the resulting charge on the 30-?F capacitor?
a. 0.70 mC b. 0.80 mC c. 0.50 mC d. 0.60 mC e. 0.40 mC
A point charge (5.0 pC) is located at the center of a spherical surface (radius = 2.0 cm), and a charge of 3.0 pC is spread uniformly upon this surface. Determine the magnitude of the electric field 1.0 cm from the point charge
a. 0.72 kN/C b. 0.45 kN/C c. 0.63 kN/C d. 0.90 kN/C e. 0.18 kN/C
Determine the approximate value for the convective heat transfer coefficient for water boiling in vertical tubes at a superheat temperature of 120ºC by using Equation 10-56. Compare this result to that using Equation 10-6. Assume the water pressure is 500 kPa.
