In the Bohr model of the hydrogen atom both the energy and orbital angular momentum of the electron are quantized
Indicate whether the statement is true or false
T
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Charon is a moon of ______________
a. Earth b. Venus c. Neptune d. Mars e. Pluto
Emission lines are produced by ____
a. atoms that become ionized b. electrons that transfer from a high energy level to a low energy level c. electrons that transfer from a low energy level to a high energy level d. the intensity of agitation of atoms in a hot gas e. the motion of an object toward or away from the observer
The stellar parallax limit for ground-based telescopes is accurate for stars closer than ____
a. 10 parsecs b. 50 parsecs c. 100 parsecs d. 200 parsecs e. 500 parsecs
Force on a Wire: A wire in the shape of an "M" lies in the plane of the paper. It carries a current of 2.0 A, flowing from A to E, as shown in the figure. It is placed in a uniform magnetic field of 0.75 T in the same plane, directed as shown on the right side of the figure. The figure indicates the dimensions of the wire. Note that AB is parallel to DE and to the baseline from which the magnetic field direction is measured. What are the magnitude and direction of the force acting on section AB of this wire?
A. 0.20 N perpendicular out of the page B. 0.40 N perpendicular out of the page C. 0.11 N perpendicular out of the page D. 0.20 N perpendicular into the page E. 0.11 N perpendicular into the page