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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 0.6410-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. Later, you notice that the ice cube has completely melted into a puddle of water.
Laser light with a wavelength lambda = 660nm illuminates a pair of slits at normal incidence.
A lead ball is dropped into a lake from a diving board 5.6 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to velocity with which it hit the water. The ball reaches the bottom 5 after it is released..
During a stage production of Peter Pan, the 53.5 kg actress playing Peter has to fly in vertically (descend). Calculate the tension in the wire supporting the actor
Earth's radius is 6.37 106 m. Illustrate by what percent does the Moon's gravitational pull on you increase?
At point A, 3,00 m from a small source of sound that is emitting uniformly in all directions, the sound level is 53.0 dB. what is the intensity of the sound at point A
Now the gymnast (not holding any additional mass) walks directly above the right support. What is the force the left support exerts on the beam
A charge of 0.99 C is spread uniformly throughout a 18 cm rod of radius 4 mm. What are the volume and linear charge densities?
A wave traveling in the +x direction has an amplitude of 0.421 m, Write the equation of the wave
Two capacitors are connected in parallel across the terminals of a battery. One has a capacitance of 2.5 uF, What is the voltage of the battery
The length of a simple pendulum is 0.73m, the pendulum bob has a mass of 307 grams, and it is released at an angle of 12° to the vertical. With what frequency does it vibrate? Assume SHM. What is the pendulum bob's speed while it passes through th..
A sample contains 8.30×104 radioactive nuclei. In a time of 5 minutes, Evaluate the half life of the sample
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