For an orbital quantum number of 2, the magnetic quantum number can take on what allowed values?
What will be an ideal response?
2, 1, 0, -1, -2
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If a hydrogen emission line appears at 656.2 nm in the laboratory, what can we say about a cloud of hydrogen gas with this same emission line at 680.2 nm?
A) The location of the emission line has nothing to do with speed. B) It is neither receding nor approaching us. C) It is approaching us. D) It is receding away from us.
The circuit below contains three 100-W light bulbs and a capacitor. The emf ? = 110V. At the instant the switch S is closed, which light bulb is brightest?
a.
A
b.
B
c.
C
d.
A and B
e.
All three are equally bright.
Refracting Telescope: The length of a telescope is 2.20 m and the focal length of the eyepiece is 1.9 cm. What is the focal length of the objective lens?
A. 41 cm B. 45 cm C. 111 cm D. 218 cm E. 16 cm
A turntable has a moment of inertia of 3.00 × 10^?2 kg·m2 and spins freely on a frictionless bearing at 25.0 rev/min. A 0.600-kg ball of putty is dropped vertically on the turntable and sticks at a point 0.100 m from the center. By what factor does the angular momentum of the system change after the putty is dropped onto the turntable?
a. 1.22 b. 1.00 (no change) c. 0.820 d. 1.20