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A certain orthodontist uses a wire brace to align a patient's crooked tooth as in the figure below. The tension in the wire is adjusted to have a magnitude of 13.26 N. Find the magnitude (in Newtons) of the net force exerted by the wire on the crooked tooth.
A 200 km long high-voltage transmission line 2 cm in diameter carries a steady current of 1050 A. If the conductor is copper with a free charge density of 8.8 x10^28 electrons per cubic meter, how various years does it take one electron to travel ..
a race car driver must average 199.0 kmh over the course of a time trial lasting ten laps. if the first nine laps were
A cylnder holds .5 moles of an ideal gas at temp 334K. The gas expands isothermally from an initail volume of .03 m^3 to a final volume of .4m^3
the hanging object has a mass of m1 = 0.370 kg; the sliding block has a mass of m2 = 0.780 kg; and the pulley is a hollow cylinder with a mass of M = 0.350 kg, Find the angular speed of the pulley at the same moment
How much does the spring stretch. A 1200 {rm kg} car traveling at a speed of 15 {rm m/s} skids to a halt on wet concrete where f_k = 0.20. how long are the skid marks.
A long jumper leaves the ground at 45 above the horizontal and lands 8.2 away. What is her "takeoff" speed
You cool a 130.0g slug of red-hot iron (temperature 745 ?C) by dropping it into an insulated cup of negligible mass containing 70.0g of water at 20.0 ?C. What is the final mass of the iron and the remaining water
If 0.260kg of blood at a temperature of 37.0 ? C flows to the surface and loses 1400J of heat, what is the temperature of the blood
A spring stretches 0.05 m when a 0.3 kg mass is suspended from it. find the charecteristic frequency of this mass on the spring
A top loading washing machine has a spin cycle that rorates at frequency f. The spinning drum that holds the clothes has a radius R, Find an expression for the magnitude of the wall's normal force acting on the piece of clothing as the drum spins
Suppose we measure the terminal voltage of a rechargeable NiCad battery and find it to be 1.28 V when measured by a voltmeter. calculate the internal resistance of the battery
A 150g steel ball and a 300g steel ball each hang from 1.0-m-long strings. At rest, the balls hang side by side, barely touching. To what angle does each ball rebound
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