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A plane is sitting on a runway, awaiting takeoff. On an adjacent parallel runway, another plane lands and passes the stationary plane at a speed of 45m/s. The arriving plane has a length of 36m. By looking out of a window, a passenger on the stationary plane can see the moving plane. For how long a time is the moving plane visible?
A hoop (I = MR^2) of mass 2.0 kg and radius 0.50 m is rolling at a center-of-mass speed of 15 m/s. What is the new speed of the center of mass of the hoop?
The three ropes are tied to a small, very light ring. Two of these ropes are anchored to walls at right angles with tensions T1 = 35 N andT2 = 70 N. What are the magnitude and direction of the tension Tvec3 in third rope.
For a movie scene, a 75kg stuntman drops from a tree onto a 55kg sled that is moving on a frozen lake with a velocity of 15m/s toward the shore, What is the speed of the sled after the stuntman is on board
A gamma-ray photon produces an electron-positron pair, each with a kinetic energy of 230keV. What was the energy of the photon
Find density of the object
A uniform meter stick is freely pivoted about the 0.20-m mark. If it is allowed to swing in a vertical plane with a small amplitude and friction, what is the frequency of its oscillations
A solid, horizontal cylinder of mass 9.0 kg and radius 1.30 m rotates with an angular speed of 8.00 rad/s about a fixed vertical axis through its center. Determine the final angular speed of the system
A regulation soccer field for international play is a rectangle with a length between 90.0m and 111mand a width between 57.0m and 70.0m
An electron is released from rest at a perpendicular distance of 9.6 cm from a line of charge on a very long nonconducting rod. What is the magnitude of the electron's initial acceleration
A spring with constant k = 10 N/m is attached to a block. What is the force on the block by the spring when the spring has been stretched by 0.05 m
Block A of mass 3 kg slides into block B of mass 2 kg. Before collision, block A moves to the right with speed 10 m/s and block B is stationary, what is the kinetic energy change for the system
A Doppler ultrasound machine uses a probe emitting ultrasound waves at 5MHz to probe the speed of blood cells moving in an artery, What is the wavelength through the soft tissue of ultrasound produced by this machine
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