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You may have noticed a type of track lighting in museums or stores with modern decor called "cable track lighting." Bare power supply wires, 60 mm apart, are strung across a room up to 6 meters and are connected to a 12 volt source (usually a step-down transformer). Halogen lamps are then clamped to the bare wires. A pair of wires can typicaly handle a maximum wattage of 350 watts.
What is the force between the long wires?
How does the magnetic field ate one wire due to the other compare with the earths magnetic field?
A 4.0 uF capacitor is initially uncharged and connnected in series with a 4.0 kQ reisitor. How long will it take for the capacitor to reach one fourth of this maximum charge
A solid sphere and a solid cylinder with the same mass and radius roll down an inclined plane without slipping. Which one will reach the bottom of the incline first. Explain why. Assume friction is negligible for both.
Three charges are at rest on the z axis: q1 = ?7.21 mC at z = 4.58 m, q2 = ?1.79 mC at z = 0 m, What is the potential energy of this system
Three deer, A, B, and C, are grazing in a field. Deer B is located 63.4 m from deer A at an angle of 53.0 ° north of west. What is the distance between deer A and C
How much energy was released in an explosion
Neptune has a mass 17.20 times larger than that of Earth and a radius 3.88 times larger. A person weighing 140 lb on the Earth would weigh how much on Neptune.
An electron has an initial velocity of 1.00 ? 106 m/s in a uniform 9.00 ? 105 N/C strength electric field. How long does it take the electron to come to rest
How fast will the electron be moving. What was his average speed (in m/s) for the race.
A 2500 kg car rounds a flat curve of radius 75 m at speed of 80 km/h. if the pavement is icy and the force of static friction is 6000 n, what is the maximum speed the car could safely go around the curve
A lens for a 35-mm camera has a focal length given by f = 54mm, What is the magnification of the image on the film
A charged object has a potential of 40 V at a distance of 3 m. If the distance is increased to 42 m, then what will be the new potential
A 130g block slides back and forth on a frictionless surface between two springs, Find the maximum compression of the right-hand spring
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