Mathematics, 24.09.2019 03:00 sweetiezylp8umho
Ahealth clinic uses a solution of bleach to sterilize petri dishes in which cultures are grown. the sterilization tank contains 120 gal of a solution of 4% ordinary household bleach mixed with pure distilled water. new research indicates that the concentration of bleach should be 6% for complete sterilization. how much of the solution should be drained and replaced with bleach to increase the bleach content to the recommended level?
Answers: 1
Mathematics, 22.06.2019 00:00, xXwolfieplayzXx
Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?
Answers: 3
Ahealth clinic uses a solution of bleach to sterilize petri dishes in which cultures are grown. the...
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