Which type/types of pen uses/use capillary action in addition to gravity for flow of ink?1 Fountain pen2 Ballpoint pen3 Gel pen only4 Both ballpoint pen and gel pen

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consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

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