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PERFECT COMPETITION, LONG-RUN PRODUCTION ANALYSIS: In the long run, a perfectly competitive firm adjusts plant size, or the quantity of capital, to maximize long-run profit. In addition, the entry and exit of firms into and out of a perfectly competitive market guarantees that each perfectly competitive firm earns nothing more or less than a normal profit. As a perfectly competitive industry reacts to changes in demand, it traces out positive, negative, or horizontal long-run supply curve due to increasing, decreasing, or constant cost.
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PERFECTLY ELASTIC An elasticity alternative in which infinitesimally small changes in one variable (usually price) cause infinitely large changes in another variable (usually quantity). Quantity is infinitely responsive to price. Any change in price, no matter how small, triggers an infinite change in quantity. This characterization of elasticity is most important for the price elasticity of demand and the price elasticity of supply. Perfectly elastic is one of five elasticity alternatives. The other four are perfectly inelastic, relatively elastic, relatively inelastic, and unit elastic.
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GREEN LOGIGUIN
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Today, you are likely to spend a great deal of time searching for rummage sales trying to buy either a genuine down-filled comforter or a 200-foot blue garden hose. Be on the lookout for bottles of barbeque sauce that act TOO innocent.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
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"My life as a writer consists of 1/8 talent and 7/8 discipline. " -- John Irving, writer
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BJE
Bell Journal of Economics
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