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A steel ball of mass m1 = 1.2 kg and a cord of length of L = 2.1 m of negligible mass make up a simple pendulum that can pivot without friction about the point O, as in the figure below. This pendulum is released from rest in a horizontal position, and when the ball is at its lowest point it strikes a block of mass m2 = 1.2 kg sitting at rest on a shelf. Assume that the collision is perfectly elastic and that the coefficient of kinetic friction between the block and shelf is 0.10
(a) What is the velocity of thWhat is the velocity of the blocke block just after impact? 1 m/s
(b) How far does the block slide before coming to rest (assuming that the shelf is long enough)? 2 m
A long straight wire carries a current of 6.2 A. The wire is horizontal in the plane of the page (screen) and the current is traveling to the left. Calculate the force that acts on the electron
Sound Check, a merchandising company specializing in home computer or speakers, budgets its monthly cost of goods sold to equal 70% of sales. Calculate the budgeted merchandise purchases.
The surface pressure on Venus is 92.00 atm, and the acceleration due to gravity there is 0.894 g. What force does the Venusian atmosphere exert on the outside surface of the bottom of the tank
How much work does a supermarket checkout attendant do on a can of soup he pushes 0.600 m horizontally with a force of 5.00 N? Express your answer in joules.
A paperweight, when weighed in air, has a weight of W = 11.9 Newton. Determine the volume of the paperweight
n = 4.64 mol of Hydrogen gas is initially at T = 343 K temperature and pi = 2.01×105 Pa pressure. How much work did the external force perform
Write a formula for the final angle θf an object will be at when it starts at an initial angle θi and rotates with an angular velocity ω for a certain interval of time.
A proton is released from rest at the origin in a uniform electric field in the positive x direction with a magnitude 850 N/C. What is the change in the electric potential energy of the proton-field system when the proton travels to x = 2.5 m?
An 80meter long train car accelerates uniformly from rest. The speed of the train is 20m/s, What is the speed of the train
What is the resistance of a 1.7m -long copper wire that is 0.50mm in diameter? (Answer should be in ohms)
An archaeologist found a fragment bone of animal. It has an activity per gram of carbon that is 25% that of an equivalent sample of carbon from a similar living animal
Determine what magnifying power is attained using a compound microscope with the following specifications: objective focal length is 1.50 centimeter
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