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A space station is to provide artificial gravity to support long-term stay of astronauts and cosmonauts. It is designed as a large wheel, with all the compartments in the rim, which is to rotate at a speed that will provide an acceleration similar to that of terrestrial gravity for the astronauts (their feet will be on the inside of the outer wall of the space station and their heads will be pointing toward the hub). After the space station is assembled in orbit, its rotation will be started by the firing of a rocket motor fixed to the outer rim, which fires tangentially to the rim. The radius of the space station is R = 73.7 m, and the mass is M = 2.63 · 105 kg. If the thrust of the rocket motor is F = 169 N, how long should the motor fire?
A projectile is fired at 60.0 o above the horizontal. Its initial speed is equal to 150.0 m/s. Like most problems in this class (2010), ignore the effects of air unless told otherwise
q1. two stationary positive point charges charge 1 of magnitude 355 nc and charge 2 of magnitude 1.8 nc are separated
a boy pulls a loaded wagon having a total mass m=100kg. He applies a constant force F=100N along the handle at 30 degrees, compute the horizontal force on the wagon
A circular coil of wire with 70.0 Loops and a radius of 0.250 m is placed in a magnetic field of 10.0 T and oriented so that the coil is perpendicular to the field. Find the maximum power developed in the coil
Find the focal length of a glass lens that has an index of refraction equal to 1.58, a concave surface that has a radius of curvature of magnitude 104 cm, and a convex surface
A bird stands on a dc electric transmission line carrying 3300A (Figure 1) . The line has 2.7×10?5? resistance per meter, and the bird's feet are 3.5cm apart
Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to three times the earth's radius of 6.38 106 m
At the bottom of the sea a small hole developed at the body of a submarine. at what speed the water is entering into submarine
The resistance of a very fine aluminum wire with a 17?m x 17?m square cross section is 1200 ? . A 1200 ? resistor is made by wrapping this wire in a spiral around a 3.9-mm-diameter glass core
A rod of length 5m with miss per unit length=x^1/2 extends in the x-direction. Find the mass and the center of mass of the rod
A 362 g object is attached to a spring and executes simple harmonic motion with the period of 0.200 s. If the total energy of the system is 6.71 J.
A huge explosion is heard 77.7 miles away. How long does it take the sound to travel that far
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