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A cylindrical habitat in space 5.81 km in diameter and 37.7 km longhas been proposed (by G.K. O’Neill, 1974). Such a habit at would have cities, land, and lakes on the inside surface and airand clouds in the center. This would all be held in place byrotation of the cylinder about its long axis. How fast would the cylinder have to rotate to imitate the Earth’s gravitational field at the walls of the cylinder? The acceleration of gravity is9.8 m/s2 .Answer in units of rad/s.
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. If the original star rotated once in 35 days, find the angular speed of the neutron star
You run a speech perception experiment comparing apples (n = 50) and oranges (n = 50). Calculate the similarity between the two categories
an electron with kinetic energy 4.90 kev circles in a plane perpendicular to a uniform magnetic field. the orbit radius
An electric field exerts a force of 3.00 x 10 -4 N on a positive test charge of 7.50 x 10 -4 C. Find the magnitude of the field at the charge location
What is the de Broglie wavelength of an object with a mass of 1.3 kg moving at a speed of 2.3 m/s? (Useful constant: h = 6.63×10-34 Js.)
n 6 moles of a monatomic ideal gas initially fills a v0 0.35 m3 container at p0 85 kpa. the gas undergoes an
An ?-particle has a charge of +2e and a mass of 6.64 ? 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.06 X 106 V, What is the speed of the ?-particle
If a charge of 0.30 C passes through a person's chest in 1.0 s, If this rate of charge transfer persists for 4.4s, how many electrons pass through the chest
Near the surface of the Earth, a beanbag is thrown at an angle ? = 45? from the top of a building a height h above the ground, what was the initial speed of the beanbag
You are pulling your younger sister along in a small wheeled cart. You weight 65.0 kg and the combined mass of your sister and the cart is 35.0 kg. What forces are applying to the ground in order to produce this acceleration
A railroad engine weighs three times as much as a freight car. If the engine coasts at 9 km per hour into a freight car that is initially at rest
A shell is shot with an initial velocity of 29 m/s, at an angle of ?0 = 62° with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass (see the figure). One fragment, whose speed immediately after the explo..
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