An empirical interatomic pair potential for xenon atoms, in units of eV, and nm, has been determined to be
The lattice parameter of FCC xenon is equal to 0.630 nm.
(a) Determine the equilibrium pair bonding energy.
(b) Determine the cohesive energy of a xenon crystal at 0 kelvin using only the nearestneighbor interactions, and compare your result with the value in the periodic table.
Comment on any observed difference.
(a) From the lattice parameter (a) of face centered cubic xenon, the equilibrium interatomic separation (r) is equal to
The interatomic separation is equal to two atomic radii. Substituting the interatomic separation of 0.445 nm into the interatomic potential for argon results in
Experimentally the pair bond energy has been determined to be –0.02 eV for excellent agreement.
(b) Considering only nearest neighbor interactions the cohesive energy per atom is
The experimental value in the Periodic Table is –0.15 eV. The difference is due to considering only nearest neighbor interactions.
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Theoretical physicists have had the greatest success in combining which force with the electromagnetic force?
a. strong nuclear force b. weak nuclear force c. gravitational force d. the force caused by the exchange of gluons
A proton, with mass 1.67 × 10-27 kg and charge +1.6 × 10-19 C, is sent with velocity 7.1 × 104 m/s in the +x direction into a region where there is a uniform electric field of magnitude 730 V/m in the +y direction
What are the magnitude and direction of the uniform magnetic field in the region, if the proton is to pass through undeflected? Assume that the magnetic field has no x-component and neglect gravitational effects.
What are the limits on the minimum and maximum values for the Lorentz factor, 
A. 0, 1 B. 1, no maximum limit C. no minimum limit, 1 D. 1, 2 E. None of these possibilities are correct.
Water (density = 1.00 × 10^3 kg/m3) flows at 7.2 m/s through a pipe with radius 0.025 m. The pipe goes up to the second floor of the building, 2.00 m higher, and the pressure remains unchanged. What is the radius of the pipe on the second floor?
a. 0.019 m b. 0.036 m c. 0.0013 m d. 0.23 m e. 0.022 m