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A 3.2 kg bucket of water is raisedfrom a well by a rope. If the upward acceleration of the bucket is2.4 m/s2, find the force exerted by the rope on the bucket.
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a 2 kg softball is pitched to you at 20 m/s. you hit the ball back along the same path and at the same speed. if the bat was in contact with the ball for .1 seconds, what is the magnitude of the average force the bat exerted
A hiker's trip consists of three segments. Path A is 9km long heading 60.0° north of east. Path B is 6.0km long in a direction due east. Path C is 5.0 km long heading 315° counter clockwise from east.
At some point in its orbit, our asteroid is moving with a speed of 20 kilometers per second. Determine the kinetic energy of the asteroid
A rock is tossed straight up with a speed of 29 m/s. How long is the rock in the air, from the instant it is released until it hits the bottom of the hole
A rocket takes off vertically from the launchpad with no initial velocity but a constant upward acceleration of 2.25 m/s2. What is the maximum height the rocket will reach above the launchpad
A certain type of laser emits light that has a frequency of 6.0 × 1014 Hz. How many wavelengths are there in one pulse
q1. the coefficient of static friction between the 3000 lb cars tires and the road is 0.5. determine the steepest grade
An advertisement shows a 1239 kg car slowly pulling at constant speed a large passenger airplane to demonstrate the power of its newly-designed 89.7-hp (horsepower) engine, Calculate the force that opposes the motion
a quarter-pound hamburger with all the fixings has a mass 210g . the food energy of the hamburger is 2.4mj. what is the
a 28.5 g bullet strikes a 0.520 kg block attached to a fixed horizontal spring whose spring stiffness constant is
A silver medallion is sealed within a transparent block of plastic. How far below the top surface would the medallion appear if the observer (not wearing goggles) and the block were under water
An advertisement claims that a particular automobile can "stop on a dime." What net force would actually be necessary to stop an automobile of mass 920kg traveling initially at a speed of 56.0km/h in a distance equal to the diameter of a dime, whi..
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