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A hanging copper wire with diameter 1.4mm (1.4e-3m) is initially 0.95 m long. When a 36 kg mass is hung from it the wire stretches an amount 1.83 mm, and a 72 kg mass is hung from it the wire stretches an amount 3.66mm. A mole of copper has a mass of 63 grams/cm^3. Find the approximate value of the effective spring stiffness of the inter atomic force.
A football player tests his vertical jump by jumping straight up a distance of 47.9 inches. What was the player's initial velocity in meters per second
suppose that the springs have somehow not yet compressed to their maximum amount. How much are the springs compressed.
A sound wave generated by a source of frequency 440 Hz is moving through 25 oC air. What is the wavelength of the sound wave inside the steel
Calculate the fuel utilization and infinite multiplication factor for a fast reactor consisting of a mixture of liquid sodium and plutonium
A train car with mass m1 = 527 kg is moving to the right with a speed of v1 = 8 m/s and collides with a second train car, What is the mass of the second train car
If a flea can jump straight up to a height of 22.0 , what is its initial speed as it leaves the ground, neglecting air resistance?
ball rolls onto the path of your car as you drive down a quiet neighborhood street. To avoid hitting the child that runs to retrieve the ball, How far did the car move while breaking
A 0.700kg block is attached to a spring with spring constant 14.5N/m . While the block is sitting at rest, find The amplitude of the subsequent oscillations
Which of the planets fits the following description: "a solid, cool surface, with occasional dust clouds and a thin CO2 atmosphere".
The three principal visible spectral lines from hydrogen have wavelengths 434 nm, 486 nm, and 656 nm. Find the angular position of the third spectral line in hydrogen
Find an expression for work done by the gas
A woman has a mass of 59 kg, What is her weight on earth and What are her mass and her weight on the moon
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