When light travels from a larger index of refraction towards a smaller index of refraction, there is no phase change upon reflection at the boundary
Indicate whether the statement is true or false
TRUE
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The ordered structure NiAl has been investigated as a high-temperature gas-turbine material; however, brittle fracture is a problem with this alloy. Theoretical calculations have determined that the enthalpy of the ordered NiAl structure is 0.15 eV per atom less than for a disordered structure. The NiAl ordered structure is a cube with Ni at 0,0,0 and Al at 1/2,1/2,1/2.
(a) What is the Bravais lattice type for NiAl? (b) What is the GFE change if this alloy disorders at 1900 K? (c) Based upon your result for (b), predict if NiAl is ordered or disordered at 1900 K. (d) From the Ni-Al phase diagram in Figure 5.15, to what temperature does the NiAl phase remain ordered?
First Law of Thermodynamics: A cylinder contains 10 moles of an ideal gas at a temperature of 300 K. The gas is compressed at constant pressure until the final volume equals 0.77 times the initial volume. The molar heat capacity at constant volume of the gas is 24.0 J/mol ? K and R = 8.31 J/mol ? K . How much heat is absorbed by the gas during this process? (R = 8.31 J/mol ? K)
A. -22 kJ B. -17 kJ C. 22 kJ D. 17 kJ E. -5.7 kJ
The spring tide can occur at either ________ or ________ phases of the Moon
Fill in the blank(s) with correct word
The alpha emission process results in the daughter nucleus differing in what manner from the parent?
a. Atomic mass decreases by two. b. Atomic number increases by one. c. Atomic mass increases by one. d. Atomic number decreases by two.