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A researcher would like to perform an experiment in a zero magnetic field, which means that the field of the earth must be cancelled. Suppose the experiment is done inside a solenoid of diameter 1.2m , length 3.0m , with a total of 5000 turns of wire. The solenoid is oriented to produce a field that opposes and exactly cancels the field of the earth. What current is needed in the solenoid's wires?
A small ball rolls horizontally off the edge of a tabletop that is 1.06 m high. how long was the ball in the air
What is the magnitude of the acceleration of the speck of clay on the edge of a potter's wheel turning at 50 (revolutions per minute) if the wheel's diameter is 38.0 cm.
Find out the edge dimension of each cube. Visualize the one cubic centimeter as formed by stacking up identical cubes, with one copper atom at the center of each. find the volume of each cube.
the index of refraction for red light in water is 1.331 and that for blue light is 1.340. what are the underwater angles of refraction for the blue and red components of the light
An aeroplane has wings with a surface area of 34 m2. The shape of the wings are such that air moving over the top of them travels 20% faster than the velocity of the air under the wing, what is the take-off speed of the plane
Calculate the energy associated with the magnetic field of a 191 turn solenoid in which a current of 2.44. A produces a magnetic flux of 3.74 x 10-4 T • m2 in each turn.
A hollow cone (like a party hat) has vertex angle 2?, slant height L, and surface charge density ?. It spins around its symmetry axis with angular frequency ?. What is the magnetic field at the ti
A circular loop of wire 0.2 m in diameter is placed with its normal at an angle of 30° to the direction of a uniform 0.14 T magnetic field. What emf appears in the loop
Determine the capacity of a roll crusher. The separation is 7 mm, speed of the rollers is 50 rpm, roller diameter is 23 cm, roller length is 0.4 m
Two ants race across a table 62 cm long. One travels at 4.77 cm/s and the other at 2 cm/s. When the first one crosses the finish line, how far behind is second one. What am I trying to solve for distance, speed, or time.
The drawing shows three identical rods (A, B, and C) moving in different planes. Find the magnitude of the motional emf for the rods
calculate the altitude of geosynchronous satellite, calculate the speed needed to move this mass from the surface fo the Earth to the altitude of 3R_E
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