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A space station, in the form of a wheel 131 m in diameter, rotates to provide an "artificial gravity" of 3.50 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of the wheel's rotation in revolutions per minute that will produce this effect.
How high from the surface of the earth must an object be raised, What minimum speed is needed by the object to ascend to this height
Jack was exposed to fast neutrons; he received a radiation dose of 300rem on part of his hand, affecting 22.0grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 9.00.
A 218.7 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. What is the velocity (speed) of the satellite
In the figure below, two parallel-plate capacitors A and B are connected in parallel across a 600 V battery. Each plate has area 70.0 cm2; the plate separations are 3.30mm, Find the magnitude of the electric field within the dielectric of capacitor..
so hydrogen atoms have a thermal velocity of about 1000 m/s. How does the energy stored in the magnetic field compare with the kinetic energy in a given volume of space.
The frequency of an electromagnetic wave is f = 3.75 x 1014 Hz, What is the index of refraction n of the material
What was the absorbed dose in the carbon walls? The average mass stopping powers of graphite and CO2 for the photons are, respectively, 1.648 and 1.680 MeV cm^2/g.
At first the spacecraft and the asteroid are at rest, 450m apart. How much time does it take for the ship and the asteroid to meet?
An electron and a positron, each moving at3.0×105m/s, collide head on, disappear, Determine the momentum of each photon
An unstretched spring with spring constant 21 N/cm is suspended from the ceiling. A 3.3 kg mass is attached to the spring and let fall. To the nearest tenth of the centimeter, how far does it stretch the spring.
The exterior walls of a house have a total area of 204 m2 and are at 11.4°C and the surrounding air is at 7.4° C. Find the rate of convective cooling of the walls
A student decides to move the box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 168 N at an angle of 30.0° above the horizontal. The box has a mass of 21.0 kg, and the coefficient of kinetic f..
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