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Suppose that the magnetic field of the Earth were due to a single current moving in a circle of radius 2910 km through the Earth’s molten core. The strength of the Earth’s magnetic field on the surface near a magnetic pole is about 6.0·10–5 T. How large a current (in the equatorial plane) would be required to produce such a field?You will need the distance from the center of the Earth to the North Pole, which is 6380 km.Note that in this case the distance to the Pole (the axial distance z) is NOT >> the radius of the current loop, r.
An optical engineer needs to ensure that the bright fringes from a double slit are 15.7 mm apart on a detector that is 1.61 m from the slits. how far apart should the slits be
Consider three capacitors, of capacitance 3600 pF, 5800 pF and 0.0100 ?F. What is the minimum capacitance you can obtain for them
Suppose you hear a clap of 4.63 seconds after seeing the lightning stroke. how far are you from the lightning stroke
A large closed bag of plastic contains 0.10 m3 of an unknown gas at an initial temperature of 10°C and at the same pressure as the surrounding atmosphere, 1.0 atm. How many moles of gas are in the bag
A certain laboratory experiment requires an aluminum wire of length of 36.0 m and a resistance of 2.30 ? at 20.0°C. What diameter wire must be used? (The resistivity of aluminum at 20.0°C is 2.82 10-8 ? · m.)
The diameter of the moon is 3.78x10^6 m. It subtends an angle of 0.00982 radians at the surface of the Earth. How far is the Moon from the Earth
Light of wavelength 0.514 µm (in air) enters the water in a swimming pool. The speed of light in water is 0.710 times the speed in air. What is the wavelength of the light in water
During a week of study, a 9.0 acre pond receives 65 mm of rain. An adjacent Sunken Colorado pan records an evaporation of 38 mm. What is the net change of water volume in the pond
Calculate the net work done on Gas
An experimental bicycle wheel is placed on a test stand so that it is free to turn on its axle. If a constant net torque of 6.00 N · m is applied to the tire for 5.00 s, the angular speed of the tire increases from 0 to 100 rev/min. The external t..
Compute the angular momentum of the earth arising from the following motions Earth's orbital motion around the sun
A diverging lens (f = â€"12.0 cm) is located 23.0 cm to the left of a converging lens (f = 35.0 cm). Determine the distance of the final image relative to the converging lens
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