Mathematics, 09.07.2019 01:00, Bri0929
Rene is going to the lake to visit some friends. if the lake is 60 miles away and rene is driving at 40 miles per hour the entire time, how long will it take her to get there?
Answers: 1
Mathematics, 21.06.2019 13:30, Bassoonist
Volume of cylinder with a radius of 8cm and height of 25 cm
Answers: 1
Mathematics, 22.06.2019 00:00, nshadow2920
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
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