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Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 1.06 m. Two of the spheres have a mass of 3.80 kg each. The third sphere (mass unknown) is released from rest. Considering only the gravitational forces that the spheres exert on each other, what is the magnitude of the initial acceleration of the third sphere?
A source emits sound uniformly in all directions. There are no reflections of the sound. What is the total sound power P emitted by the source
Compare the time response of the control system sketched in Figure with the system of Figure, where the disturbance was placed between the controller.
Estimate the pressure exerted on a floor by the one pointed chair leg (50 kg on all four legs) of area = 0.08 cm2
A spaceship, 180 m long as seen on board, moves by the earth at 0.950c. What is its length as measured by an earth-bound observer?
When Mars is at this distance, find the diameter of the image of Mars formed by a spherical, concave, telescope mirror with a focal length of 1.95m.
A block of weight 36.1 N is hanging from a rope. The tension in the rope is 48.5 N, pulling upward on the block. What is the magnitude and direction of the acceleration of the block?
two stones are thrown simultaneously one straight upward from the base of a cliff and the other straight downward from
A 4.0-kg ball with a velocity of 4.0m/s in the +x-direction collides head on elastically with a stationary 2.0-kg ball. What are the velocities of the balls after the collision
Bob walks directly north for 400 m, then turns 45 degrees to his right and jogs at 5 m/s for 500 m northwest, then turns another 30 degrees to his right and walks 600 m. Discover Bob's net displacement vector. Include both direction and magnitude. Wh..
A metal ball with a mass of 3.81·10-6 kg and a charge of +5.21 mC has a kinetic energy of 4.77·108 J. how close will it come to the plane before stopping
A heat engine is composed of of a monatomic ideal gas which runs in the following cycle: At point A the pressure is 2.6 atm, What is the efficiency of this heat engine
An atom of an element with an atomic number of 95 and a mass number of 241 undergoes decay by emission of an alpha particle. What are the atomic number, mass number and name of the product atom?
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