The BCS theory of superconductivity details the working of a superconductor. Choose the statement below that describes one of its characteristics
d.
The two fermionic electrons pair to form a boson, which does transition to the superconducting state. This state is similar to superfluid helium, the Bose-Einstein condensate.
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According to Einstein, increasing the brightness of a beam of light without changing its color will increase:
a. the number of photons. b. the energy of each photon. c. the speed of the photons. d. the frequency of the photons.
If you wanted to observe stars behind a molecular cloud, in what wavelength of light would you most likely observe?
A) ultraviolet B) visible C) infrared D) X-ray E) gamma-ray
If sufficient force is applied to a crystal, it can be permanently deformed. Permanent deformation in metal crystals occurs due to atomic displacements on the planes that are most closely packed, and it happens in the most closely packed directions. Assume that a force is applied to a crystal of FCC copper that permanently stretches the crystal in the [001] direction. The (111) plane is one of the close-packed planes in FCC copper on which permanent deformation could occur.
(a) What is the angle between the [001] direction and the normal to the (111) plane? (b) Atom displacements along which close-packed directions within the (111) plane could contribute to the permanent deformation of the crystal in the [001] direction?
What is the Moon's gravity? a. There is no gravity on the Moon
b. 1/3 of Earth's gravity c. 1/2 of Earth's gravity d. 1/6 of Earth's gravity e. The Moon's gravity is the same as that of Earth.