The frequency of a microwave absorbed by a molecule when changing from the J = 3 to J = 4 rotation energy state is 4.61 × 10^11 Hz. The moment of inertia of the molecule (in kg ? m2) is
a. 5.70 × 10^?45
b. 1.45 × 10^?46
c. 1.12 × 10^?44
d. 2.91 × 10^?46
e. 9.11 × 10^?46
b
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What is the closest stellar system to the Solar System & how far away is it?
A. Sirius, about 8.6 light years away B. Alpha Centauri, about 4.3 light years away C. Wolf 359, about 359 AU away D. Barnard's Star, about 6 AU away E. Alpha Centauri, about 4.3 AU away
A particle (m = 2.0 ?g, q = ?5.0 ?C) has a speed of 30 m/s at point A and moves (with only electric forces acting on it) to point B where its speed is 80 m/s. Determine the electric potential difference VA ? VB
a. ?2.2 kV b. +1.1 kV c. ?1.1 kV d. +2.2 kV e. +1.3 kV
Consider a two-slit interference experiment like the one shown in figure Q3.7b. The distance between adjacent bright spots in the interference pattern on the screen (A) increases, (B) decreases, or (C) remains the same if, The distance between the slits and the screen increases.
A. increases B. decreases C. remains the same
When we apply the Lorentz factor ? to momentum, we
A) multiply by ? as with the equation for time dilation. B) multiply by the reciprocal of ?. C) find it does not apply.