When an electron in an atom goes from a higher energy level to a lower energy level, the atom may
A) emit a photon of a specific wavelength.
B) absorb a photon of a specific wavelength.
C) absorb several photons of a specific wavelength.
D) emit a photon of any wavelength.
E) absorb a photon of any wavelength.
A) emit a photon of a specific wavelength.
You might also like to view...
Based on current evidence, how does the actual average density of matter in the universe compare to the critical density?
A) The actual average density of matter, even with dark matter included, is only about a quarter of the critical density. B) If we include dark matter, the actual average density of matter equals the critical density. C) The actual average density of matter less than 1% of the critical density. D) The actual density of average matter is about twice the critical density.
A disturbance in particle motion parallel to the wave velocity is called a
a. transverse wave. b. acoustic wave. c. standing wave. d. longitudinal wave.
The background radiation in space corresponds to what temperature blackbody radiation?
A. 0 K
B. 2.7 K
C. 273 K
D. 5800 K
E. 98.6
F
A 7.8-kg solid sphere, made of metal whose density is 2500 kg/ , is suspended by a cord. When the sphere is immersed in water (of density 1000 kg/m3), what is the tension in the cord?
A) 110 N B) 76 N C) 46 N D) 92 N E) 61 N