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You want to practice zero g, i.e. not feeling any gravity. You plan to have your plane fly in a vertical circle of radius 810 feet. What velocity (ft/s) is required to cancel gravity at the top of the circle?
You can launch the proton from the surface of a sphere of with charge Q and radius R, from the center of a ring of charge Q and radius R, or from the center of a disk of charge Q and radius R. Which is the best choice.
You've been walking at a steady, and rope pulls up on the sled at a 21 angle. You estimate that the mass of the sled, with your friend on it, is 64 and that you're pulling with a force of 84.0.
A 245 ball is tied to a string. It is pulled to an angle of 5.20 and released to swing as a pendulum. A student with a stopwatch finds that 10 oscillations take 10.5.
A 0.20-kg billiard ball travelling at a speed of 15.00 m/s strikes the side rail of a pool table at an angle of 60 degrees. If the side rail rebounds at the equal speed and angle what is the change in its momentum?
the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57. Find out the acceleration of the sled and child.
A boy on board a cruise ship drops a 30.0 g marble into the ocean. what is the terminal speed of the marble
Chromium is produced by reacting its oxide with aluminium. If 354 g of Cr2O3 and 158 g of Al react to form 204 g of Al2O3, how many grams of Cr are formed.
Calculate the rates of solar heating
Prepare a multiple-step income statement for the year ended December 31, 2012, concluding with earnings per share.
In the rainy season, the amazon flows fast and runs deep. In one location, the river is 23m deep and moves at a speed of 4.0m/s toward the east. what is the potential (magnitude and sign) at the surface
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.795 s to reach the opposite tower, 20.0 m away. If a 1 meter length of ..
Explain what is the force felt by the electrons and the nuclei in the rod when the external field described in the problem introduction is applied?
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