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Engineering, 04.07.2019 18:10
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
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Engineering, 04.07.2019 19:20
Aseries piping system conveys methyl alcohol. the system consists of 70 m of 1- nominal pipe follow by 50 m of 2-nominal pipe, both schedule 40 commercial steel. the 1-nominal pipe contains 3 90° elbows (regular) anda fully open gate valve, all threaded. the pressure drop through the system is 150 kpa. determine the volume flow rate through the system that is horizontally laid.
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Engineering, 06.07.2019 04:10
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Engineering, 06.07.2019 05:10
An electric cable of 10 mm in diameter is to laid in atmosphere at 20°c. the estimated surface temperature of the cable due to heat generation is 65°c. find out ther maximum percentage, increese in heat dissipated when the wire is insulated with rubber having k =0155 w/m-k. take h=8.5w/m^2.k
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