Two things that are quantized in the Bohr model of the hydrogen atom are __________ and __________
Fill in the blank(s) with correct word
energy, angular momentum, and the spectrum
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The Elysium region is a _____
A) highland area on Venus B) frozen polar cap on Neptune C) volcanic plain on Mars D) geological fault on Uranus
Rotational Kinetic Energy: As shown in the figure, two blocks are connected by a light string that passes over a frictionless pulley having a moment of inertia of 0.0040 kg ? m2 and diameter 10 cm. The coefficient of kinetic friction between the table top and the upper block is 0.30. The blocks are released from rest, and the string does not slip on the pulley. How fast is the upper block moving when the lower one has fallen 0.60 m?
A. 1.2 m/s B. 5.4 m/s C. 3.2 m/s D. 2.0 m/s E. 1.4 m/s
Emission nebula appear red because they are associated with cool red giant stars
Indicate whether the statement is true or false
According to modern understanding, protons and neutrons are each composed of
A) three leptons. B) two fermions. C) three quarks. D) four bosons.