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A plane was flying through the air at a velocity of 245 m/s when it slowed down to a velocity of 85 m/s in 15 s. What is the acceleration of the plane?
Ball 1, with a mass of 110g and traveling at 15m/s, collides head on with ball 2, which has a mass of 300g and is initially at rest, What are the final velocities of each ball if the collision is perfectly elastic
A weight lifter raises a 1093 N weight a vertical distance of 1.60 m in a time interval of 2.05 s. Compute the power provided by the weight lifter's force
A microscope has an objective lens with a focal length of 16.22 mmand an eyepiece with a focal length of 9.20 mm. With the length of the barrel set at31.0 cm, the diameter of a red bloodcell's image subtends an angle of 1.43 mrad with the eye.
A sprinter can accelerate with constant acceleration for 3.40s before reaching top speed. He can run the 100-meter dash in 10 s. Determine what is his speed as he crosses the finish line?
light rays in a material with index of refrection 1.25 can undergo total internal reflection when they strike the
Four objects are situated along the y axis as follows:a 2.01 kg object is at +2.98 m, a2.90 kg object is at +2.45 m, Where is the center of mass of these objects
Prove that, given two angular momenta, L and S, their sum J = L+ S satisfies the commutation relations of the angular momentum (and therefore has the all the general properties of an angular momentum, e.g., the ladder structure, etc.).
A 19.5-kg boy slides down a playgroundslide that drops through a height of 2.32m. what is the boy's speed at the bottom of the slide
How fast (in {rm rpm}) must a centrifuge rotate if a particle 8.5 cm from the axis of rotation is to experience an acceleration of 115000 {rm g}'s.
A 320 g model rocket is on a cart that is rolling to the right at a speed of 3.0 m/s. At what horizontal distance left of the loop should you launch
At the moment of ignition the mass of a rocket is 100 kg. For the first 10 s it burns fuel at the rate of 5 kg/s. find The magnitude of the force developed by its engine
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.20 m. The mug slides off the counter and strikes the floor 0.60 m from the base of the counter.
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