Steel ball is widely used in machine‚ but also ages rapidly. Therefore‚ knowing the ball mill course and causes of aging can improve the life span. There are four major causes of steel ball aging Firstly‚ cutting and shaping abrasion. The relative sliding motion in the cylinder of ball mill ball is in the rising phase‚ hard material by the group is in cutting groove‚ and cutting softer materials on the ball is of the relatively shallow. Materials produce local shaping abrasion of the
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fairway is able to strike a ball so that it leaves the club with a horizontal velocity of 20 m s–1. (Assume the acceleration due to gravity is 9.80 m s–2‚ and the effects of air resistance may be ignored unless otherwise stated.) a b c d e How long after the ball leaves the club will it land on the fairway? What horizontal distance will the ball travel before striking the fairway? What is the acceleration of the ball 0.5 s after being hit? Calculate the speed of the ball 0.80 s after it leaves the
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A study on working of Ball pen By Sunil kumar . S Std .X. A Nithin kumar. P.V Std. X. A Musamil . F.K Std IX. A Govt: Boys H.S.S .KARAMANA THIRUVANANTHAPURAM. Guide: Smt. Abida Beevi History of the Ballpoint Hungarian journalist Laszlo Biro was well aware of the problems with normal pens. Biro believed that the idea of a pen using a quick-drying ink instead of India ink came to him while visiting a newspaper. The newspaper’s
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Ball in the Cup Lab Ball in Cup Lab Objective: Using the equipment provided and the physics equations used in class‚ get the ball in the cup in one attempt. Hypothesis: If we use the skills we have learned to analyze two-dimensional motion‚ then we can accurately predict where a ball will land when rolled off a table. Materials: 3 Meter Sticks Tape Steel Ball Balance Plastic Cup Protractor Stopwatch Plumb bob Procedure: Using two meter sticks
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casual and athletic socks which were sold to the trade. It was established in 1972. By early 1980 CU’s two mills were producing 67 styles which were almost all cushioned socks manufactured for the men’s and boys’ casual/athletic market in anklet‚ midcalf and kneel-high lengths. CU carried a 10% share of the boys’ / men’s’ casual/athletic socks (approximately 3‚700‚000). The margins for CU were less than 20%. To get higher gross margin‚ CU had to venture into new business – branded socks. . It was very
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CHIPMAN-UNION‚ Inc. Odor-Eaters Socks EXECUTIVE SUMMARY In March 1980‚ Hosiery market in United States was quite competitive in terms of price and players. Chipman-Union Inc. was one of the major players in this market which produced a whole gamut of hosiery products ranging from men’s dress hosiery to socks for all types of customers like men‚ boys‚ girls‚ misses and athletes. Chipman-Union was established in 1972 by a merger of the Union Manufacturing Company with Charles Chipman’s Sons
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object in motion to remain in motion. But because of gravity the ball is pulled down and resistance that slows the ball down. A quarterback through the motions of his and body‚ must balance the forward momentum that he gives the ball‚ fighting gravity and air resistance that pulls and slows it down. Aerodynamics is involved during passing because of the spin that is applied. The better the spin the straighter and further the ball will travel. This is accomplished by the quarterback throwing the
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Ladder Ball Stand Description Ladder Ball a backyard game that has since then become a very popular game for tailgaters‚ backyard parties and pretty much anywhere you want a good game of Ladder Ball to happen. The part that I am discussing though is the Ladder Ball Ladder Stand. The stand is what decides whether you win or lose. It looks like a ladder (hence Ladder Ball) but only has three rungs in the middle. These three rungs have a different point value the top rung being worth one point‚ the
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ever said ‘When Life Brings You Bowling Balls’? Nope! Never. The say would never catch on and it made Olly the Bowling Ball miserable. He was an adorable little ball. He was painted a neon green colour. His paint was chipped and faded. As the years went by‚ Olly became the unused bowling ball. It made him cry. His other bowling ball friends were upset for him‚ though were just glad to be getting used. There was a rule at the bowling alley in which the balls resided. If you were not used over the space
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Her First Ball – Katherine Mansfield Characters: Protagonist: Leila Her first ball is based primarily on Leila‚ who is the protagonist of the story. In this story‚ we do not particularly know her appearance‚ but can form an image of her through the description of her personality. Leila is youth and idealism personified. She is simple; she tries to act mature in the story because she feels indifferent amongst her cousins and it is uncomfortable for her. “She tried not to smile too much; she
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