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Two identical wires with a weight of 4.95E+4 N/m, are located one above the other, in a vertical plane above the surface of the earth. The wires are aligned north-south so that the earths's magnetic field will not affect them. Assume the distance of separation is 0.07 m and that they will carry the same current, but in opposite directions. What must be the value of the current for the lower wire to levitate the upper wire?
A block with a mass of 7.32kg is on an incline plane that makes an angle 37.5o with respect to the horizon. what is the coefficient of kinetic friction
A cylinder (with circular ends) and a hemisphere are solidthroughout and made from the same material. What is the radius of the hemisphere
A 0.43 kg air cart is attached to aspring and allowed to oscillate. The displacement of the air cartfrom equilibrium is x = (16.1cm) cos[(1.98s-1)t + π]. estimate the maximum force exerted on it by the spring
A crate of mass 11.5 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The pulling force is 100 N parallel to the incline, What is the change in kinetic energy of the crate
A capacitor can be made from two sheets of aluminum foil separated by a sheet of waxed paper. what is the capacitance of this capacitor
A cylindrical piece of metal 8.50 cm tall with a radius of 1.95 cm has a specific gravity = 4.0, what is the mass of the cylinder in units of grams
the magnetic field 36.0 cm away from a long straight wire carrying current 6.00 a is 3.33 microt.a at what distance is
The image behind a convex mirror (radius of curvature = 92 cm) is located 8 cm behind the mirror. Where is the object located
an object has initial velocity in the upward direction a final velocity in the downward direction and undergoes
he beaker has a mass 15 grams when its empty the beaker plus the liquid has a mass of 38 grams. the liquid has a volume
A uniform 5.50kg square solid wooden gate 2.00mon each side hangs vertically from a frictionless pivot at the center of its upper edge. What is the angular speed of the gate just after it is struck by the unfortunate raven
A small, plastic sphere of mass m = 111 g is attached to a string There is an electric field of 122 N/C directed along the + x axis
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