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Question: A wire of diameter 0.750 mm and length 20.0 m has a measured resistance of 2.60 ohm.
Question 1: What is the resistivity of the wire?
I'm looking for a brief but thorough explanation, and an example.
An unstretched spring has a length of 0.30 m. while the spring is stretched to a total length of 0.60 m, it supports traveling waves moving at 4.5 m/s. How fast would waves travel on this spring if it is stretched to 0.90 m.
A horizontal wire is hung from the ceiling of a room by two massless strings. The wire has a length of 0.22 m and a mass of 0.009 kg. A uniform magnetic field of magnitude 0.070 T is directed from the ceiling to the floor.
A baseball leaves a pitcher's hand at a speed of 10.0 m/s. The mass of the baseball is .10 kilogram. You can neglect air resistance. Obtain how much work has the pitcher done on the ball in throwing it
The skier starts at a snow covered slope which is inclined 20 degrees above the horizontal. The skier has a mass of 100kg. How fast are is he going at the bottom
A tensile specimen has a 10mm minimum diameter and a 50mm guage lenght. The stress and strain follow a linear behaivour before the applied load reaches 8 x 10^4 N, what is the young modulus for this material
An aluminum cup contains 225 g of water at 27°C. A 450 g sample of silver at a initial temperature of 85°C is placed in the water. Of 45 g copper stirrer is used to stir the mixture until it reaches its final equilibrium temperature of 32°C. What is ..
a physicist has developed a device that generates a beam of alpha particles each of which is a helium nucleus
The Specific heat of a substance varies with temperature according to the function c=0.20 + 0.14T + 0.023T2, Determine the energy required to raise the temperature of 2.0 gram of this substance from 5.0oC to 15oC
A revolutionary war cannon, with a mass of 1950 kg, fires a 24.4 kg ball horizontally.The cannon ball has a speed of 134 m/s after it has left the barrel. The cannon carriage is on a flat platform and is free to rollhorizontally. What is the speed..
A 5-kg object moving with a velocity of 4m/s colides head on with a 10-kg object moving towards it at -3m/s. If the 10-kg object stops dead after the collision, what is the approximate coefficient of restitution for this collision
right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out
a block is on a horizontal surface a shake table that is moving back and forth horizontally with simple harmonic motion
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