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A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.16 kg. The ball approaches the cushion with a velocity of +1.6 m/s and rebounds with a velocity of ?1.2 m/s. The ball remains in contact with the cushion for a time of 4.8 10-2 s. What is the average net force (magnitude and direction) exerted on the ball by the cushion?
26 g of copper pellets are removed from a 300 degree Celsius oven and straight away dropped into 116 mL of water at 25 degree Celsius in an insulated cup. What will the new water temperature be.
Find out the tension in the two strings. string between m1 and m2 2 N string between m2 and the 3.00 kg mass
A car starts from rest and then accelerates uniformly to a linear speed of 16 m/s in 42 s. If the tires have a radius of 27 cm, what are the following.
If the system is stopped, how much hanging mass would be required to bring the rotating mass to the same position.
What amplitude of simple harmonic motion of the spring-blocks system puts the smaller block on the verge of slipping over the larger block.
An automobile and a truck start from rest at the same instant, with the automobile at first at some distance behind the truck. The truck has a constant acceleration of 2.01.
A bungee jumper with mass 63 jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 47. He finally comes to rest 21.00 below the level of the bridge.
He pushes just hard enough to get the desk moving and continues pushing with that force for 5.00 s. Explain how much work does he do on the desk?
determine the mass of liquid ammonia that boils away before thermal equilibrium. Assume an excessive amount of liquid ammonia is present and that the liquid ammonia does not react with the copper.
The camel walks at the uniform speed 4.53 km/hr along a straight line in the direction 39.7? north of East (only the camel knows why he chose that particular direction). Explain how long will it take the camel to cross the desert?
calculate the fraction of which is submerged when the cylinder floats in alcohol. Fraction of Vwood submerged.
A double speed trap is set up on a freeway. One police cruiser is hidden behind a billboard, and another is some distance away under a bridge. As a sedan passes by the first cruiser, its speed is measured to be 99.7 mph.
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