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1. Show that the difference in Kelvin coefficients for a thermocouple made of conductors A and B can be written in terms of the open circuit voltage as τAB = T (d2?AB/dT2).
2. Show that, if the Kelvin thermoelectric effect did not exist (i.e., if τAB were zero), then the voltage produced by a thermocouple would always depend linearly on temperature.
A picture hangs on the wall suspended by two strings, as shown in the figure, with theta = 68°. The tension in string 1 is 1.4 N. What is the weight of the picture
A double slit experiment is performed with sodium(yellow) light of wavelength 589.3nm, Find the separation between slits
Find the pressure difference on an airplane wing if air flows over the upper surface with a speed of 114m/s , and along the bottom surface with a speed of 107m/s
It is claimed that a black hole is so strong in its gravitational pull that even light cannot escape from it. However, if the speed of light, and gravitational forces are constant, then light should be able to escape from the black hole if it can ..
A projectile is fired in such a way that its horizontal range is equal to12.5times its maximum height. What is the angle of projection
A 75.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. how fast was the ball travelling
A 350-kg roller coaster starts from rest at point A and slides down the frictionless loop-the-loop, How fast is this roller coaster moving at point B
Calculate the first three energy levels for an electron in a quantum well of width 12.5 nm with infinite walls. The equilibrium electron and hole concentrations and the location of the Fermi level for silicon at 27 °C.
at temperatures below the curie temperature tc ferromagnetic materials have two crucial propertiesi they exhibit
During a tennis serve, a racket is given an angularacceleration of magnitude 160 rad/s2. find the magnitude of the total acceleration of the top of the racket
A 2.00 kg frictionless block is attached to a horizontal spring as shown. At t = 0, the position x = 0.225 m, and the velocity is 4.25 m/s toward the right in the positive x direction. Position x as a function of t is: x = A*cos(?t ) , where A ..
What fraction of the original kinetic energy of puck dissipates during the collision, kinetic friction before is 40 m/s, kinetic friction after is 29.3 m/s
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