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A person drops a cylindrical steel bar (Y = 1.00 × 1011 Pa) from a height of 1.00 m (distance between the floor and the bottom of the vertically oriented bar). The bar, of length L = 0.51 m, radius R = 0.0075 m, and mass m = 1.00 kg, hits the floor and bounces up, maintaining its vertical orientation. Assuming the collision with the floor is elastic, and that no rotation occurs, what is the maximum compression of the bar?
The water is near freezing in temperature. Typically a human can only swim in such water for about 300 seconds (or 5 minutes) before hypothermia sets in. Calculate the time the explorer spends in the water
If you were to send a beam of laser light to a space station above an atmosphere and just above the horizon, would you aim the laser above, below or at the visible space station.
A 250 g piece of ice at 0°C is placed in 430 g of water at 22°C. What is the final equilibrium temperature of the system
A particle rotates in a circle with a centripetal acceleration of 9.81 meters per second squared. what is the new centripetal acceleration in terms of the original value
A solid spherical ball of mass 2.3 kg and radius 0.11 m rolls along a smooth, What is the ball's rotational kinetic energy
A parallel-plate capacitor has plates of area A and separation d and is charged to a potential difference, find The inital and final stored energy
If the orientation of the spacecraft is to be changed by 30.0°, for what time interval must the gyroscope be operated.
The baseball bat has a mass of .82kg and is .86m long. What is the baseball bat angular acceleration when it has reached 20 degrees from the verticle
The potential difference between the plates of a capacitor is 242V. Midway between the plates; a proton and an electron are free. The electron is released from rest.
A 54.00 kg pole vaulter running at 10 m/s vaults over the bar. Her speed while she is above the bar is 1.0 m/s. Avoid air resistance, in addition to any energy absorbed by the pole, and determine her altitude as she crosses the bar.
Imagine that you send out a light flash at t=6.0 s as registered by your clock, At what time did your brother actually make this silly face and How far is your brother away from you
The bright yellow sodium line in the sodium spectrum is actually a pair of closely spaced lines at 589.0 nm and 589.6 nm. Find the angular separation between the two sodium lines in second order
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