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A wire with a resistance of 7.1 Ω is drawn out through a die so that its new length is 5 times its original length. Find the resistance of the longer wire, assuming that the resistivity and density of the material are unchanged.
Light with an initial intensity of S0 passes through a vertical-oriented polarizer, and then passes through a second polarizer oriented 12.2° from vertical. find the direction (or possible directions) of the initial polarization
A 1.44 kg monkey wrench is pivoted at oneend and allowed to swing as a physical pendulum. The period of itsmotion is 0.860 s, and the pivot is0.290 m from the center of mass of the wrench.
A luge and its rider, with a total mass of 82 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 43 m/s. Assume that they stop with the constant deceleration of 3.2 m/s2.
A person with a weight of 237 lb stands on two feet with their weight equally distributed between the two shoes, What is the pressure on each shoe independently
A tungsten wire has a radius of 0.070 mm and is heated from 20.0 to 1416 oC. The temperature coefficient of resistivity is ? = 4.5 x 10-3 (Co)-1, How long is the wire
An electron with kinetic energy of 6.0 x 10-16 J is moving to the right along the axis of a cathode-ray tube. There is an electric field vector = (2.0 x 104 N/C) j in the region between the deflection plates.
A wheel 55.0 cm in diameter accelerates uniformly from 215 rpm to 370 rpm. how long does this process take
A wire has a length of 6.20 10-2 m and is used to make a circular coil of one turn. compute the maximum torque that this coil can experience
a wire loop of dimensions L = 50.0 cm and W = 30.0 cm lies in a magnetic field . If = (3.00 10-2 T/m)y : What is the direction of the emf induced in the loop
A tank having a volume of 0.11 m3 contains helium gas at 170 atm. How many balloons can the tank completely fill
A 2600 kg automobile is traveling at 20 m/s when the brakes are applied. The braking force is 10192 N. Use work-energy methods for this problem. Determine the initial kinetic energy of the automobile
Ladder 6.55 m long leans against the side of a building. If the ladder is inclined at an angle of 65.5° to the horizontal, what is the horizontal distance from the bottom of ladder to the building.
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