Spectral lines shifted toward higher frequencies are called ________.
A. red shifted
B. blue shifted
C. Lines cannot be shifted toward higher frequencies.
Answer: B
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The rms velocity of an oxygen molecule in a gas is 390 m/s. If the absolute temperature is increased by 20%, then what is the rms velocity?
A. 427 m/s B. 502 m/s C. 567 m/s D. 604 m/s E. 635 m/s
Which of the systems listed below is the largest, having NA = NB and U = 6NA? for which there is a better than 1 in a billion chance of seeing one or the other solid having zero energy?
A. NA = 6 B. NA = 8 C. NA = 10 D. NA = 12 E. NA = 15
What is the wavelength of an electromagnetic wave that has a frequency of 3 kilohertz?
A) less than 1 km B) 1 km C) more than 1 km
An electron (charge ?1.6 × 10^?19 C) moves on a path perpendicular to the direction of a uniform electric field of strength 2.0 N/C. How much work is done on the electron as it moves 14.0 cm?
a. 5.6E–19 J b. ?2.8E–19 J c. 1.6E–19 J d. 3.9E–18 J e. zero