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he density of free electrons in gold is 5.90x10^28 m^-3. The resistivity of gold is 2.44x10^-8 ohms.m at a temperature of 20 C and the temperature coefficient of resistivity is 0.004. a gold wire 1.1 mm in diameter and 26 cm long, carries a current of 760 ma. what is the drift velocity of the electrons in the wire?
A long, solid insulating cylinder of radius R = 1 mm has a uniform volume charge density and a total linear charge density of Lambda = 3:610^ -9 C/m.
A bowling ball weighing 71.2 is attached to the ceiling by a 3.50 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, speed of the bowling ball is measured a..
A 12.0 kg box is pulled along a horizontal surface by a force Fp at a 30° angle above the horizontal. Calculate the acceleration of the box assuming a force of magnitude 45 N is applied at the 30° angle
What is the angular acceleration
A diving board oscillates with simple harmonic motion of frequency 3.36 cycles per second, What is the maximum amplitude with which the end of the board can vibrate in order that the pebble placed there not lose contact with the board during oscillat..
A particular vacuum flask has a mass of 1 kilogram and contains 1 liter of liquid water, what is the speed of the empty flask, Assume its initial velocity is zero
A bead slides without friction around a loop- the-loop. The bead is released from a height of 24.7 m from the bottom of the loop-the- loop which has a radius 9 m.
An electron moving horizontally at 3.15 x 106 m/s enters a vertical magnetic field, Find the magnitude of the magnetic field in tesla (T)
When a diver jumps into the ocean, water leaks into the gap region between the diver's skin and her wetsuit, estimate how much energy (in units of candy bars = 300 kcal) is required by this heating process
The two parallel plates in the figure below are 2.0 cm apart and the electric field strength between them is 2.1 104 N/C. An electron is launched at a 45° angle from the positive plate. What is the maximum initial speed v0 the electron can have witho..
A block of weight W can slide on a horizontal surface. A force of W/n1 is applied to the right that causes the block to accelerate with acceleration equal to g/n2. g is the acceleration by reason of gravity. If the coefficient of kinetic friction is ..
A 5.00 x 10^4 kg space probe is travelling at a speed of 14000 m/s through deep space. Retrorockets are fired along the line of motion to decrease the probe's speed. The retrorockets generate a force of 4.00 x 10^5 N over a distance of 2600 km. What ..
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