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An open train car, with a mass of 2210 kg, coasts along a horizontal track at the speed 2.47 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.83 s at the rate of 431 kg/s. What is the car's speed after the loading is completed? Ignore rolling friction (as unrealistic as that may be).
_________ m/s
Dr. Winger stands on the drill field just north of President Lee's statue. He walks 20.0 m north on the sidewalk toward Lee Hall while thinking about going back to work. Determine how far Dr. Winger is from where he started
A worker is pulling a cart. The frictional force between the cart and the ground is 500N. What is the minimum force that must be applied by worker to move the cart.
A weather satellite encircles the earth at an orbital speed of 6200 m/s. How high above the earth's durface does it orbit
The specific heat of water is 4186 J/kg•K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm3.
You have a string with a mass of 0.0131 kg. You stretch the string with a force of 9.31 N, giving it a length of 1.89 m, What is the wavelength of the standing wave you create in the string
A spaceship moving away from the Earth at a velocity v1 = .75c with respect tot he Earth, What is the velocity of the rocket with respect to the Earth
After a tornado, a 0.55g straw was found embedded 2.6cm into the trunk of a tree. If the average force exerted on the straw by the tree was 70 N, what was the speed of the straw when it hit the tree.
as two trains move along a track their conductors suddenly notice that they are headed toward each other. the figure
A person looks horizontally at the edge of a swimming pool. If its length is 5.00m, and the pool is filled to the surface, to what depth (in m) could observer see? For water is 1.33).
The contacts worn by a farsighted person allow her to see objects clearly that are as close as 25.0 cm, even though her uncorrected near point is 84.0 cm from her eyes, How far away is the poster actually located
A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall, what is the magnitude of the coin\'s displacement
Two waves have the exact same frequency, wavelength, and amplitude. They are both travelling in the +x direction, What is the phase difference between the two waves.
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