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For a particular scientific experiment, it is important to be completely isolated from any magnetic field, including the earth's field. A 1.50 m diameter current loop with 180 turns of wire is set up so that the field at the center is exactly equal to the earth's field in magnitude but opposite in direction.(Assume that magnetic field strength at the surface of the earth is 5 x 10^-5 T).
What is the current in the current loop?
A stamp collector is viewing a stamp with a magnifying glass held next to her eye. What is the refractive power of a magnifying glass that has an angular magnification of 7.5
What was the speed of the car when the brakes were applied.
A series circuit consists of a 50.0-Hz ac source, a 50.0-ohm resistor, a 0.500-H inductor, and a 60.0-µF capacitor. What is the voltage amplitude of the source
In an experiment, 300 g of aluminum (with a specific heat of 900 J/kg·K) at 100°C is mixed with 54.0 g of water (4186 J/kg·K) at 20°C, What is the entropy change of the aluminum-water system
A) Find v so that the rod swings up and is horizontal at the max height of the bob. B) Find the minimum v so that the rod will make a complete circle C) Find v so that the tension in the rod is zero at the top of its swing.
A solenoid of length 4.0 cm and diameter 0.93 cm is wound with 165 turns per cm. What is the induced emf in one of the windings
Emily has a field with uniformly cut grass of height 2 cm which grows at a constant rate. How long would it sustain each animal alone
The magnitude of the electrostatic force between two identical ions of mass 1.224×10-25 kg that are separated by a distance of 6.50 nm is 1.770×10-9 N. Calculate the electric field at the site of each ion
Calculate the volume charge density of the atmosphere
Illustrate what is the highest point above the water she reaches? If she walked off the diving board rather than springing up would she be travelling faster, slower, or at teh same speed when she hits the water?
A 30 microF capacitor and a 5.45 miliH inductor are connected in series with an open switch. What is the angular frequency of the charge oscillations in the capacitor
The wavelength of the laser beam used in a compact disc player is 549 nm. Estimate the spacing between the slits of the grating
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