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1. A superconducting film can be used as a high sensitivity bolometer (an instrument for measurement of heat radiation). Explain.
2. To what extent can the two electrons in a Cooper pair be thought of as moving as if they were bound to opposite ends of a spring? What property of the system constitutes the spring?
3. Exactly what is the distinction between the energy states of an electron in a superconductor and the energy states of the superconductor itself?
The mean time between collisions in iron is 5.2×10-15s. What electron current is driven through a 1.5-mm-diameter iron wire by a 0.067V/m electric field
a parallel-plate capacitor is formed from two circular 12.5-cm-diameter plates spaced 1.0 mm apart. the electric field
A person with mass mp = 72 kg stands on a spinning platform disk with a radius of R = 1.74 m and mass md = 195 kg. find the centripetal acceleration of the person
Suppose a satellite is in a circular orbit 3.0 Earth radii above the surface of the Earth (3.0 Earth radii from the center of the Earth). By how much does it have to increase its speed in order to be able to escape Earth?
two 10-cm-diameter charged rings face each other 23.0cm apart. both rings are charged to 40.0nc . what is the electric
Formulate mesh-current equations for the circuit in given Figure.- Formulate node-voltage equations for the circuit in given Figure.
A 1.5-m-long glass tube, closed at one end,is weighed and lowered to the bottom of a fresh-water lake. Determine the depth of the lake
A lead rod and a common glass rod both have the similar length when at23.5° C. The lead rod is heated to53.2° C. To what temperature should the glass rod be heated so that they are again at the similar length?
At an air show a jet flies directly toward the stands at a speed of 860 kilometer per hour, emitting a frequency of 2800 Hertz, Find what frequency do they receive as the plane flies directly away from them
in one fusion research program a pellet of hydrogen isotopes will be heated and compressed with intense lasers. if a
Suppose that one-half the mass of the sphere has a density of 2.70 x 103 kg/m3, What is average density of the sphere
Two cars, each with a mass of 6000 kg, hit head on each traveling at 80 km=h. Estimate the increase in internal energy absorbed by the materials in each car.
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