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The typical magnetic field at the surface of the earth at the equator is 0.3 Gauss (1 gauss = 10-4T). Assuming that the magnetism arises from a magnetic dipole located at the earths core, estimate the magnitude of the dipole moment. (look up the relevant constants). Assuming that the earths core has a density of 5000 Kg/m3, core radius of 106m and charge density of 1C/m3 and modeling the core as a solid sphere what is the angular velocity of the core? Does the number make sense?
A certain orthodontist uses a wire brace to align a patient's crooked tooth, Find the magnitude (in Newtons) of the net force exerted by the wire on the crooked tooth
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Illustrate what is the general direction of the airplane's velocity? east of south, north of west,north of east, or west of south?
A satellite is in orbit 4.2*10^7 m from the center of Earth with a speed of 7,800 m/s. what is the mass of the satellite
1. all objects radiate energy in much the same way as an ideal blackbody. so why is it difficult to see objects in a
a television antenna is on the roof of the building. from a pt. on the ground 36.0 feet from the building the angle of
Many cheap electric stoves have three settings on their switch (besides OFF) labelled LOW MED and HIGH. What is the total element resistance in each case
A current loop, carrying a current of 3.0 A, is in the shape of a right triangle with sides 30, 40, and 50 cm. Find the magnetic dipole moment of the loop
according to its design specification the timer circuit delaying the closing of an elevator door is to have a
a horizontal uniform bar of mass 2kg and length 3.0 m is hung horizontally on two vertical strings. string 1 is
A builder will use wood for floor support in building a house. The Young's modulus for this wood is 12 x 10^9 Newtons/meter^2. What would be the length of wood joists if the sag is not more than 25ft
Charges of -q and +2q are fixed in place, with a distance of 2.00mbetween them. A dashed line is drawn through the negative charge,perpendicular to the line between the charges. On the dashed line,at a distance L from the negative charge, there is..
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