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A 42.0-cm diameter wheel, consisting of a rim and six spokes, is constructed from a thin rigid plastic material having a linear mass density of 25.0 g/cm. This wheel is released from rest at the top of a hill 53.0 high. 1. How fast is it rolling when it reaches the bottom of the hill? 2. How would your answer change if the linear mass density and the diameter of the wheel were each doubled?
A standing observer perceives a train whistle to have a frequency of 300 Hz. what is the frequency of the sound waves emitted from the train
You throw a 176 g ball straight up to a height of 37.0 m. Calculate the average force exerted by your hand while you are throwing it
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 5.35 m/s2 over a distance of 18.8 cm. Find the total time the block is in motion
An electron of mass 9.11 10-31 kg has an initial speed of 2.80 105 m/s. Determine the magnitude of the force exerted on the electron
Consider a string with length 36 cm. The two ends are attached to the ceiling, separated by distance 30.0 cm. Determine the tension in the right segment of the string
Two spherical objects with a mass of 5.35 kg each are placed at a distance of 2.35 m apart. How many electrons need to leave each object
a 45.0N block rests on a horizontal table. a horizontal force of 36.0 N is applied to the block. what is the magnitude of the blocks acceleration
A banked circular highway curve is designed for traffic moving at 60 km/h. What is the minimum coefficient of friction between tires and road that will allows
A 63 kg astronaut floating at rest in space outside a space capsule throws his 0.50 kg hammer such that it moves with a speed of 13 m/s relative to the capsule
A hot-air balloon is travelling upwards with a constant speed of 12 m/s. An object fell from the balloon when it was at the height of 1000 m
A wodden raft has a density of 0,5*10^3kg/m^3 and dimension of 3,05m*6,1m*0,305m. How deep does it sink into the water when unloaded
A jet with mass m = 50000.0 kg jet accelerates down the runway for takeoff at 1.7 m/s2. What is the net horizontal force on the airplane as it levels off
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