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Two identical pucks are on an air table. Puck A has an initialvelocity of 2.3 m/s in the positivex-direction. Puck B is at rest. Puck A collides elastically with puck B and A moves off at 1.0 m/s at an angle of +60° above thex-axis. What is the speed and direction of puck B after the collision? (Let angles above the +x-axis to be positive and below to be negative.)magnitude ___ m/sdirection ___ degrees
a blue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.4 ms2. a
A segment of wire carries a current of 20 A along the y-axis from y = 2.0 to y =0 and then along the x axis from x = 0 to x =-4.0 m. What is the magnitude of the force on this segment of wire
Some European trucks run on energy stored in a rotating flywheel, with an electric motor getting the flywheel up to its top speed of 290 ? rad/s. One such flywheel is a solid, uniform cylinder with a mass of 390 kg and a radius of 1.06 m. (a) What is..
a magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down
A rocket moves upward, starting from rest with an acceleration of 33.4 m/s2 for 3.47 s. It runs out of fuel at the end of the 3.47 s but does not stop. How high does it rise above the ground.
a an ambulance leaves the police station in big city and travels 7 blocks north then 7 blocks east to pick up a
A uniform disk with mass 39.5kg and radius 0.250 m is pivoted at its center about a horizontal, frictionless axle that is stationary. What is the magnitude a of the resultant acceleration of a point on the rim of the disk
Sound with a frequency of 431 Hz travels through steel. A wavelength of 11.27 m is measured. determine the speed of the sound in steel
You are at a rock concert and find that when you stand 15 m from a speaker, the intensity is so high that it hurts your ears. how far from the speaker should you stand
The x-component of the electric field
Calculate the acceleration of a bus that goes from 57.6 km/h to a speed of 99.79 km/h in 10 s
question1a 150 30.0-cm-diameter turntable rotates on frictionless bearings at 61.0. a 17.0 block sits at the center of
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