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A high-voltage copper transmission line with a diameter of 1.40 cm and a length of 300 km carries a steady current of 9.75 102 A. If copper has a free charge density of 8.46 x 1028 electrons/m3, over what time interval does one electron travel the full length of the line? answer in years?
A copper wire is 7.00 m long and has a cross-sectional area of 1.00 10-4 m2. what is the maximum torque that can act on it
Assuming that average separation between two protons in 12C is equal to the nuclear diameter, compute the coulomb force of repulsion and gravitational force of attraction between the protons. If the nuclear potential seen by the protons is 50 MeV for..
A playground carousel is rotating counterclockwise about its center on frictionless bearings. Find the final angular speed of the carousel
Determine the number of moles of helium in the balloon and Determine the mass of helium needed to inflate the balloon to these values
It takes 2.80 s for a small ball with a mass of 0.120 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released
the reserve capacity rc of a car battery is defined as the number of minutes the battery can provide 25.0a of current
A small remote-control car with a mass of 1.58 moves at a constant speed of = 12.0 in a vertical circle inside a hollow metal cylinder that has a radius of 5.
Use a computer to produce a table and graph, like those in this section, for two interacting two-state paramagnets, each containing 100 elementary magnetic dipoles.
A sound wave from a police siren has an intensity of 103.1 W/m2 at a certain point; find the intensity level of the sound wave due to the ambulance?
A box of mass 50 kg is at rest on a horizontal frictionless surface. A constant horizontal force F then acts on the box and accelerates it to the right. What is the magnitude of the force
A 170 g block connected to a light spring with a force constant of k = 4N/m oscillates on a horizontal, frictionless surface. What is the maximum magnitude of the force exerted by the spring during this motion
A thin, uniform rod is hinged at its midpoint. To begin with, one-half of the rod is bent upward and is perpendicular to the other half. What is the angular velocity of the straight rod
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