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It is proposed that future space stations create an artificial gravity by rotating. Assume a space station is constructed as a 3000 meter diameter cylinder that rotates about its axis. The inside surface is the deck of the space station. Find what rotation period will provide gravity? Determine what is the tangential speed?
The electric field points due east and has a magnitude of 4.3 105 N/C. The mass of the electron is 9.11 10-31 kg and that of the proton is 1.67 10-27 kg. Both the proton and electron have charge magnitudes of 1.60 10-19 C.
A cube of ice is taken from the freezer at -9.5°C and placed in a 105 g aluminum calorimeter filled with 323 g of water at room temperature of 20°C. What was the mass of the ice cube
The air at the beginning of the compression stroke of an air-standard Otto cycle is at 0.095 MPa and 22°C, and the cylinder volume is 2800 cm3.
The far point of a nearsighted person is 8.5 m from her eyes, and she wears contacts that enable her to see distant objects clearly. How high is the image formed by the contacts
A hot-air balloonist, rising vertically with a constant velocity of magnitude = 5.00m/s , releases a sandbag at an instant when the balloon is a height = 40.0m above the ground, With what magnitude of velocity does it strike
on a trip to the colorado rockies you notice that when the freeway goes steeply down a hill there are emergency exits
two long parallel wires carry currents of 0.245 a in the same direction. if the wires are 0.034 m apart what is the
Within a typical thunder cloud there are electric charges of -40 C and +40 C separated by a vertical distance of 5 km. Treating these charges as point like, find the magnitude of the electric force of attraction between them.
A 15.0-m length of hose is wound around a reel, which is originally at rest. The moment of inertia of the reel is 0.440kg· m2, and its radius is 0.160 m. When turning, friction at the axle exerts a torque of magnitude 3.40 N· mon the reel.
A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop at an amusement park. The sensor measures the magnitude of the normal force that the seat exerts on a rider.
A heat engine is based on a cycle consisting of an isobaric, an isometric and an adiabatic process. Find the amount of heat for each process
a billiard ball collides in an elastic head-on collision with a second identical ball. what is the kinetic energy of
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