Cloud chambers have been replaced by bubble chambers because
A)
the radioactive clouds were too dangerous to work with.
B)
the density of fluids is greater than the density of vapors.
C)
bubble chambers tend to be larger and more expensive.
D)
gamma rays are visible in bubble chambers, but not in cloud chambers.
B
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The Ritz combination principle states that the sum of the
A) frequencies of two lines in a spectrum often equal the frequency of a third line. B) energies associated with two lines in a spectrum often equal the energy associated with a third line. C) energy transitions of quantum jumps is consistent with the conservation of energy. D) all of the above E) none of the above
An ideal massless spring with a spring constant of 2.00 N/m is attached to an object of 75.0 g. The system has a small amount of damping. If the amplitude of the oscillations decreases from 10.0 mm to 5.00 mm in 15
0 s, what is the magnitude of the damping constant b? A) 0.00693 kg/s B) 0.0462 kg/s C) 0.00762 kg/s D) 0.0100 kg/s E) 0.00857 kg/s
Exclusion Principle: The orbital angular momentum quantum number ? can have any integer value ranging from
A. 0 to n. B. 0 to (n-1). C. 1 to n. D. 1 to (n+1). E. -n to n.
Inside a house, stepping on a tile floor barefooted may feel almost cold, but stepping on carpet in an adjacent room feels comfortably warm. Why is this?
a. It's because the tile is below room temperature while the carpet is at room temperature. b. It's because the tile is at room temperature while carpet is normally warmer. c. It's because the thermal conductivity of tile is less than that of carpet. d. It's because the thermal conductivity of carpet is less than that of tile.