What was one of the early experimental confirmations of deBroglie's theory that electrons behave like waves?
a. Niels Bohr's quantitative work with electron orbits in hydrogen atoms.
b. Albert Einstein's confirmation that deBroglie's work was sound.
c. The discovery of diffraction effects in electron scattering.
d. Young's experiments on double slit interference.
e. The discovery of varying brightness in spectral signatures.
c
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A 4.00 kg ball is moving at 3.00 m/s to the NORTH and a 5.00 kg ball is moving at 2.00 m/s to the NORTHWEST. The total momentum of the system is
A. 20.3 kg m/s at an angle of 89.7 degrees NORTH of EAST. B. 20.3 kg m/s at an angle of 24.6 degrees SOUTH of EAST. C. 26.1 kg m/s at an angle of 24.6 degrees NORTH of EAST. D. 26.1 kg m/s at an angle of 89.7 degrees SOUTH of EAST. E. 43.00 kg m/s at an angle of 45.0 degrees NORTH of EAST.
The division of the geological history of the Earth into sets of distinct intervals is referred to as the geological
A) time scale B) record C) spectrum D) ladder
What type of forces result in reverse faulting?
a. Expansive b. Compressional c. Parallel d. Shear
The energy of a photon that ionizes a hydrogen atom from the ground state will be _________ the energy of a photon that ionizes a different hydrogen atom from the first excited state (n – 2)
a. larger than b. smaller than c. equal to d. twice