Which expression represents the area??
...
Answers: 3
Mathematics, 22.06.2019 00:00
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
Mathematics, 22.06.2019 00:30
What is the geometric mean of 3 and 7? a) square root of 21 b) 2 square root of 6 c) 2 square root of 7 d) 21
Answers: 2
History, 24.10.2020 06:50
Mathematics, 24.10.2020 06:50
Mathematics, 24.10.2020 06:50
English, 24.10.2020 06:50
Chemistry, 24.10.2020 06:50
Mathematics, 24.10.2020 06:50
English, 24.10.2020 06:50
Mathematics, 24.10.2020 06:50
Mathematics, 24.10.2020 06:50
Arts, 24.10.2020 06:50
Mathematics, 24.10.2020 06:50
Biology, 24.10.2020 06:50
Mathematics, 24.10.2020 06:50