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A space laboratory is rotating to create artificial gravity, as the figure indicates. Its period of rotation is chosen so that the outer ring (rO = 2480 m) simulates the acceleration due to gravity on earth (9.80 m/s2). What should be the radius rI of the inner ring, so it simulates the acceleration due to gravity on the surface of Mars (3.72 m/s2)?
A car has a mass of 1500 kg. If the driver applies the brakes while on a gravel road, what is the shortest distance in which the car can stop safely
A novice skier, starting from rest, slides down a frictionless 41.0 incline whose vertical height is 230.How fast is she going when she reaches the bottom.
A cyclist hits the brakes and decelerates. His wheels were spinning at 175 rev/min initially and 40 rev/min after 5 s of deceleration. Compute the average angular acceleration (in rad/s2) of his wheel during this 5 s period
A screen is placed 50cm from a single slit. A laser of wavelength 635nm is shown on the slit resulting in a single slit diffraction pattern, What is the width of the central maximum
An unstable particle with a mass equal to 3.34 x10-27 kg is initially at rest. The particle decays into two fragments that fly off with velocities of 0.983c and -0.863c, respectively. Discover the masses of the fragments. (Hint: Conserve both momentu..
An ideal gas in a container of volume 0.15m^3 at 0c is kept under the pressure of 10 atm. Determine the number of gas molecules in the container
find the electric field outside a uniformly charged hollow cylindrical shell with radius r and charge density sigma an
A high diver of mass 65kg jumps off a board 10m above the water. If her downward motion is stopped 1.70 s after she enters the water, what average force did the water exert on her.
A 0.5 kg mass is located on the end of a vertical spring that has a spring constant k of 75 N/m, Find change in gravitational potential energy of system
A nanowire is a (nearly) one-dimensional structure with a diameter on the order of a few nanometers. What is the tension in the middle
A microphone is attached to a spring that is suspended from the ceiling, as the drawing indicates. determine the amplitude of the simple harmonic motion
A 20.0-kg uniform plank is supported by the floor at one end and by a vertical rope at the other, find the magnitude of the force that the floor exerts on the plank
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