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A steel ball of mass 0.820 kg is fastened to a cord that is 47.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal, as shown in the figure. At the bottom of its path, the ball strikes a 3.90 kg steel block initially at rest on a frictionless surface. The collision is elastic. Discover (a) the speed of the ball and (b) the speed of the block, both just after the collision.
A main supply pipe of radius 7.9 mm is connected to two pipes A and B of radii 4.83 mm and 3.40 mm respectively. what is the speed of the water in pipe A
It is found experimentally that the electric field in a certainregion of Earth's atmosphere is directed vertically down. At analtitude of 260 m the field hasmagnitude 60.0 N/C. At an altitude of 190 m, the magnitude is 100 N/C.
You throw a ball with a speed of 25.0 m/s at an angle of 40.0degrees above the horizontal directly toward a wall. How long does the ball take to reach the wall
A village maintains a large tank with an open top, containing water for emergencies. The water can drain from the tank through a hose of diameter 6.70 cm. find the friction force exerted by the nozzle on the stopper
During an experiment you determine the cat off wavelength of a cathod ray tube to be λ0. What are the stopping voltage(potential) and electron velocity in terms of λ0 for second experiment
A projectile is launched with a velocity of 20m/s at 60o with the ground. at what angle are the magnitudes of the components equal
A small block is attached to an ideal pring and is moving in SHM on a horizontal, frictionless surface, What is the frequency of the motion
The polar ice caps contain about 2.48 x 10^19 kilogram of ice. This mass contributes negligibly to the moment of inertia of the earth because it is located at the poles, Find what would be the change in the length of the day
300 J of work are done to compress the gas as, in the same process, 1200 J of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecules.
A 76kg student consumes 2500 Cal each day and stays the same weight. One day, he eats 3500 Cal and, wanting to keep from gaining weight, decides to "work off" the excess by jumping up and down.
A spider of mass m is sitting in a perfectly symmetric web (in a vertical plane with 45 angles between the web lines), where Ti's denote the tensions along the lines that are connected to the spider at the center with i = 1, 2, 3, 4, 5, 6, 7, 8. The ..
A 11.0kg box slides 4.0m down a frictionless30 degree incline, then collides with a spring whose springconstant is 180N/m. What is the maximum compression of the spring inmeters?
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