The energy level diagram for hydrogen
The energy of a photon emitted in a transition from the n = 3 state to the n = 2 state is __________.
1.9 eV
You might also like to view...
Two parallel surfaces are separated by 1 m. One of the surfaces has a temperature of 177ºC and the other surface is 27ºC. A heat shield is placed midway between the two surfaces. Estimate the shield temperature.
What will be an ideal response?
One beam of coherent light travels path P1 in arriving at point Q and another coherent beam travels path P2 in arriving at the same point. If these two beams are to interfere destructively, the path difference P1 - P2 must be equal to
A) an odd number of half-wavelengths. B) a whole number of wavelengths. C) zero. D) a whole number of half-wavelengths.
The coil shown in the figure has 2 turns, a cross-sectional area of 0.20 m2, and a field (parallel to the axis of the coil) with a magnitude given by B = (4.0 + 3.0t2) T, where t is in s. What is the potential difference, VA ? VC, at t = 3.0 s?
a.
?7.2 V
b.
+7.2 V
c.
?4.8 V
d.
+4.8 V
e.
?12 V
A ball is thrown upward. After the ball is released upward and is in the air, its acceleration
1.remains the same. 2.increases. 3.decreases and then increases. 4.increases and then decreases.