rleiphart1

05.10.2019 • 

Physics

Railroad tank car is derailed and ruptured. it discharges 380 m3of pesticide into the mud lake drain. the drain flows into mud lake which has a liquid volume of 40,000 m3. the water in the creek has a flow rate of 0.10 m3/s, a velocity of 0.10 m/s, and the distance from the spill site to the pond is 20 km. assume that the spill is short enough to treat the injection of the pesticide as a pulse, that the pond behaves as a flow balancedcstr, and that the pesticide is nonreactive. estimate the time it will take to flush 99 percent of the pesticide from the pond.

Ответ:

bobduncan1086

08.12.2022

Physics

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5.3m/; 7.45m/

Explanation:

the magnitude of a=(change in speed)/(the time took to accelerate to the speed above)

So for that sports car, a=(26.8m/s-0m/s)/(5.1s)=5.2549m/, knowing from the question that the sig fig of this question depend on "5.1 seconds", so the answer should be 5.3 m/

For the rocket, a=(447m/s-0m/s)/(1 minute)=(447m/s)/(60s)=7.45m/

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