6.2-1. What
is the frequency of a photon emitted when an electron drops from the P-shell to
the O-shell in a hydrogen atom? The Rydberg constant is 1.097 x 107
m-1. [40.2 THz]
6.2-2. What
is the de Broglie wavelength of a neutron moving at 0.5 % of the speed of
light? [0.26 pm]
6.5-1. If
the relative uncertainties of the mass and velocity of the neutron in a2-2 both
are 3.0 %, what is the minimum absolute uncertainty in their position? [0.7 pm]
6.6-1. The
work function of an unknown metal is 1.30 eV. What is the maximum kinetic
energy of photoelectrons emitted when ultraviolet light of the wavelength 100
nm is shining on the metal? [10.7 eV]
6.7-1. What
is the maximum frequency of photons
emitted by an X-ray apparatus employing a 15.0 kV potential difference?
[3620000 THz]
6.10-1. A
new element, internationalbaccalaureatium, has been discovered. One isotope of
it is 390150Ib. Find its a) mass defect in kg b) binding
energy per nucleon in MeV. The mass of a neutral Ib-390 atom is 386.314159 u.
[a) 1.15 x 10-26 kg b) 16.6 MeV/nucleon]