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Thomson experiment; Kelvin effect (Sir W. Thomson [later Lord Kelvin]):
While an electric current pass through a conductor whose ends are maintained at distinct temperatures, heat is released at rate approximately proportional to the product of the current & the temperature gradient.
what are coherent waves
Meissner effect (W. Meissner; 1933): The reduction of the magnetic flux in a superconducting metal while it is cooled below the transition temperature. i.e., superconducting m
Find the minimum angle at which a roadbed should be banked Determine the minimum angle at which a roadbed should be banked so that a car traveling at 20.0 m/s can safely negotia
a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/
Q. What are the characteristics of laser beam? Characteristics of laser The laser beam (a) is monochromatic. (b) is coherent with the waves all exactly in phase with o
stock theoram
Total height of the gymnast just before falling back down is=(2+.3)=2.3m Energy gained at that point = m*g*h(m=mass, g=gravitational force, h=height) =55*9.8*2.3=1239.7 J
A circular coil has a 12.8cm radius and consists of 29.0 closely wound turns of wire. An externally produced magnetic field of magnitude 2.23 mT is perpendicular to the coil. (a) i
Diffraction is the spreading of light that takes place when it pass through a thin slit or small hole or passes by an obstacle Answer: Diffraction is the spreading of any k
Q. Find the minimum wavelength of X-rays produced by an X-ray tube operating at 1000 kV. λmin = 12400 A 0 / V Therefore λmin = 12400 X 10 -10 / 10 6 = 0.0124 A 0
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