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A 0.88 kg ball drops vertically onto a floor, hitting witha speed of 33 m/s. It rebounds with an initial speed of 13m/s.
(a) What impulse acts on the ball during the contact?
(b) If the ball is in contact withthe floor for 0.0397 s, what is the magnitude of the average forceon the floor from the ball?
A cork 2.0 cm in radius is used to close one end of a tube whose other end is connected to a vacuum pump. How much force would be needed to pull the cork out
A heat engine working between 340.0oC and 630.0oC, takes in 8.277×106 J of heat and delivers 2.100×106 J of work per cycle. What is the maximum possible efficiency of an engine
What is the moment of inertia of the object about an axis at the center of mass of the object, What is the moment of inertia of the object about an axis at the left end of the rod
Acceleration on the moon is g/6. If an astronaut hit a golf ball with a speed and launch angle that would result in a 120m horizontal range on earth, how far would it go
What mass of stone is necessary if the temperature is not to drop below 18.5°C overnight. Sunlight shining in during the daytime is absorbed by the floor, interior walls, and objects in the room, raising their temperature to 37.5°C.
Tension is maintained in a string The observed wave speed is 26.5 m/s when the suspended mass is m = 2.87 kg. What is the mass per unit length of the string
An astronaut on the Moon drops a rock straight downward from a height of 1.50m. what is the speed of the rock just before it lands
When monochromatic light is being used with a certain diffraction grating, it is found that the first-order maximum occurs at 8°. What is the highest order of maximum that can be observed
A mixture of iron and an unknown material is bombarded with electrons. What is the unknown material (use chemical symbol)
Object A has a position as a function of time given by A(t) = (3.00 m/s)t + (1.00 m/s2)t2, What is the distance between object A and object B at time t = 4s?
A firefighter with a weight of 702 N slides down a vertical pole with an acceleration of 2.90 m/s2, directed downward. What are the magnitudes and directions (choose the positive direction up) of the vertical forces
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, How fast are the waves traveling
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