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Assume a straight 2 millimeter diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 5.1×105 T.
a) Estimate what current would the wire carry?
b) Explain briefly why it is not feasible?
A sprinter accelerates from rest to a top speed with anacceleration whose magnitude is 3.60m/s2. After achieving top speed, he runs the remainderof the race without speeding up or slowing down.
A 20kg box slides 45m from the top down to the bottom of an incline that is 10 degrees to the horizontal. How much work is done by the force of gravity on the box
A 500 turn solenoid with a length of 20 cmand a radius of 2.0 cm carries a currentof 2.0 A. A second coil of four turns iswrapped tightly about this solenoid so that it can be considered tohave the same radius as the solenoid.
A step-down transformer is used for recharging the batteries of portable electronic devices. Find the power delivered to the DVD player
When a 6.0 µF capacitor is connected to a generator whose rms output is 30 V, What is the frequency of the source
Two concentric metal spheres are found to have a potential difference of 846.0 V when a charge of 3.586·10-8 C is applied to them. What is the radius of the inner sphere
Using the liquid drop model, tabulate the nuclear binding energy and the various contributions to the binding energy for the nuclei 40Ca and 208Pb.
At some instant, an alpha particle (q=+2e) has the coordinates (3.0, 0.0, 0.0)(nm) and is moving along the positive x axis with 500 km/s, Obtain the magnitude and direction of the magnetic force felt by each particle
In an ultra-low-temperature experiment, a collection of atoms enter a special state called a Bose-Einstein condensate in which the index of refraction is1.57 x 107. Determine is the speed of light in this condensate?
A magnetic field has a magnitude of 1.40×10-3 T, and an electric field has a magnitude of 4.60×103 N/C. Both fields point in the same direction. A positive 1.8 C charge moves at a speed of 2.90×106 m/s in a direction that is perpendicular to both fie..
An electric field with an average magnitude of about 220 N/C points downward in the atmosphere near Earth's surface. We wish to "float" a sulfur sphere weighing 4.8 N in this field by charging the sphere. What charge (in C), with the proper sign, mus..
A map suggests that Atlanta is d1 = 729 mi in a direction of ?1 = 5.05° north of east from Dallas. find the direction north of east of Dallas
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