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A certain conductor has 6.20 10^28 free electrons per cubic meter, a cross-sectional area of 4.00 10-6 m2, and carries a current of 3.10 A. Find the drift speed of the electrons in the conductor.
A student in an undergraduate physics lab is studying Archimede's principle of bouyancy. The student is given a brass cylinder and using a triple beam balance finds the mass to be 1.25 kg
How much work does Bob do on the rock and How much force, assumed to be constant, does Bob apply to the rock
Two charged particles of equal magnitude (-Q and -Q) are fixed at opposite corners of a square that lies in a plane. What is the direction of the force on the test charge due to the two other charges
How much work must this force do to stop the wheel. An electron moving along the x axis has a position given by x = 11te-1t m, where t is in seconds. How far is an electron from the origin when it momentarily stops.
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
A defibrillator consists of a 17.0-µF capacitor that is charged to 8.5 kV. What is the average power delivered to the tissues
A 20 kg sled is being pulled along a horizontal stretch of snow covered ground by a horizontal force of 30 N. find the coefficient of kinetic friction between the sled and the snow
Mass of electron = 9.11 x 10-31 kg, h = 6.626 x 10-34 J.s, c = 3 x 108 m/s; 1 eV = 1.6 x 10-19 J, Mass of a proton or neutron = 1836 x mass of electron, Mass of aluminum atom = 26.9 amu, 1amu = 1.66 x10-27 kg.
estimate the % difference, which the use of isothermal compressibility instead of the adiabatic compressibility, would make to the calculated value of the speed of sound (340m/s)
It takes 2.7×106J of heat to bring a quantity of water from 24?C to a boil. What is the mass of water
A singly charged ion of unknown mass moves in a circle of radius 14.5 cm in a magnetic field of 7.4 T, What is the mass of the ion
In Rutherford scattering of alpha particles from a thin gold foil, determine a maximum possible radius of the nucleus
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