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A tungsten wire has a radius of 0.086 mm and is heated from 20.0 to 1422 oC. The temperature coefficient of resistivity is ? = 4.5 x 10-3(Co)-1. When 130 V is applied across the ends of the hot wire, a current of 1.2 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.
Find out the magnitude of the acceleration (in m/s2) for an alpha particle in a uniform electric field with a magnitude of 100 N/C
A 253 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp and the log has an acceleration of 0.700 m/s2, Find the tension in the rope
Fred Jones owns 56 shares of the Robust Corporation's stock. Robust announces a 3 for 2 stock split. Explain how many shares will Fred have after this split?
Consider a 10-kg block resting on a frictionless plane inclined 30 o connected by a rope through a pulley to a 10-kg block hanging free. What is the direction and magnitude of the resulting acceleration of the 2-block system?
Two sinusoidal waves of the same period, with amplitudes of 5.5 and 7.5 mm, travel in the same direction along a stretched string; they produce a resultant wave with an amplitude of 12.760 mm. The phase constant of the 5.5 mm wave is 0. What is th..
By what percent must one increase the tension in a guitar string to change speed of waves on the string from 327 m/s to 376 m/s.
A merry-go-round (carousel) with a moment of inertia of 594 kg·m2, is initially rotating horizontally at 2 rad/s about a frictionless axis through its center.
A scientific supply catalog advertises a material having the index of refraction of 0.85. Is that a better product to buy? Why or why not.
Write down the expression for net torque
A person with a mass of 103 kg is standing on a scale that reads weight in newtons inside of an elevator. If the elevator accelerates upward at 3.2 m/s2, what does the scale read.
Two loudspeakers are placed next to each other and driven by the same source at a frequency of 570Hz. A listener is in front of the speakers and on the line separating them.
The drawing shows an equilateral triangle, each side of which has a length of 2.23 cm. Point charges are fixed to each corner, Determine the charge qA and qB
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