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1) Find the drift velocity of conduction electrons in a gold wire of diameter 1.03 mm when a current of 0.221 A flows in it. The density of conduction electrons in gold is 5.90 X 10^28 m-3
____m/s
2) Suppose that a particle accelerator is used to move two beams of particles in opposite directions. In a particular region, electrons move to the right at 7130 m/s and protons move to the left at 1681 m/s. The particles are evenly spaced with 0.0570 m between electrons and 0.0832 m between protons. Assuming that there are no collisions and that the interactions between the particles are negligible, what is the magnitude of the average current in this region?
_____Amps
A horizontal 605 N merry-go-round of radius 1.31 m is started from rest by a constant horizontal force of 77.9 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go- round
A glass soda bottle is emptied of soda and filled to the very top with water. A cork is carefully fitted into the top of the bottle, leaving no air between the cork and the water.
A soldier has a huge contraption that notches a large 4 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. What is the speed of the arrow
A guitar string is 92 cm long and has a mass of 3.8 g. From the bridge to the support post (= L) is 63 cm, What are the frequencies of the fundamental and first two overtones
At time 0 a grinding wheel has an angular velocity of 30. It has a constant angular acceleration of 35 until a circuit breaker trips at time = 2.20. From then on, wheel turns through an angle of 428 as it coasts to a stop at a constant angular dec..
A small block of mass 1.21 kg slides without friction on a horizontal table. Initially it moves in a circle of radius R0 = 0.62 m with a speed 1.8 m/s. What is the torque placed on the mass by the string
A student wearing frictionless in-line skades on a horizontal surface is pushed by a friend with a constant force of 23.00N. How far should the student be pushed, starting from rest, so that her final kinetic energy is 283J.
the velocity of an airplane is 50km/hr due north. the plane the plane flies into a cross wind of 50km/hr due east at a right angle
During this experiment the first step in the procedure was the measurement of the string's mass and total lenght, Calculate lthe linear mass density of the string in g/cm
A 2 kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s, After the collision, the velocity of the combined bodies is
The two blocks are on frictionless inclines and are in static equilibrium. The block on the left has a mass of 49 Kg, and the block on the right has a mass of n3 Kg. If the left incline has the length of n1 meters, and the right incline the length of..
Design a decorative "mobile" to consist of a low-mass rod of length 0.46 m suspended from a string so that the rod is horizontal, find the tension in the string that supports the mobile
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