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An astronaut is being tested in a centrifuge. The centrifuge has a radius of 8.76 m and, in starting, rotates according to Theta = 0.30 t 2. where t is in seconds and Theta is in radians. When t = 11.39 s, what is the magnitude of the astronaut's linear speed?
a 20X microscope objective is designed for use in an oil immersion microscope with 16 cm tube length. the lens is marked NA=.9. what is the diameter of the objective lens
A solid cylinder is rolled down a ramp. They cylinder starts 0.29 m above the level surface below. If it starts at rest, what is the speed of the center of mass as it reaches the level surface
A small ball with a mass of 0.06 kg moves along a circular orbit with a radius of 0.5 m at a speed of 3.0 m/s. What is the angular momentum of the ball
A bowling ball has a mass of 3.3 kg, a moment of inertia of 0.076032 kg · m2, and a radius of 0.24 m. What is the total kinetic energy of the rolling ball
Tarzan spies a 40kg chimpanzee in severe danger, so he swings to the rescue. He adjusts his strong, but very light, What are the frequency of Tarzan's swing
A very long solenoid of circular cross section with radius R = 5.30 cm has n = 69.0 turns/cm. An electron is sitting just outside the solenoid, at a distance r = 5.80 cm from the solenoid axis. What is the magnitude of the force on the electron as..
A vertical solid steel post of diameter d = 23.1 cm and length L=2.36 m is required to support a load of mass m = 8260 kg. What is the change in the post's length when the load is applied
A horse races once around a circular track in a time of 18.0 s, with a speed of 18.0 m/s. Illustrate what is the radius of the track? Give your answer in meters, but do not include units.
A solid cylinder of mass 3 kg and radius 0.2 m starts from rest at the top of a ramp, inclined 15°, and rolls to the bottom without slipping. (For a cylinder I = 0.5MR2) The upper end of the ramp is 1.2 m higher than lower end. Find the linear sp..
A 1.0 kohm resistor is connected in series with a 10 mH inductor, a 30 V battery, and an open switch. at time t=0, the switch is suddenly closed. What are the voltage drops Vr and Vl 20.00 us after the switch is closed.
A girl is using a rope to pull a box that has mass of 35kg across a level surface with constant velocity. What is the normal force of the floor on the box
A charge of -3.65 nC and a charge of -6.70 nC are divorced by a distance of 70.0 cm. Find the position at which a third charge of +7.30 nC can be placed so that the net electrostatic force on it is zero.
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