Desperate ! i really need this doing so much x
...
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 03:00
Which answer choice is it? is it the first ,second,third or fourth giving 40 points for whoever answers correctly you
Answers: 1
Spanish, 15.07.2021 20:00
Arts, 15.07.2021 20:00
Business, 15.07.2021 20:00
Mathematics, 15.07.2021 20:00
Mathematics, 15.07.2021 20:00
Mathematics, 15.07.2021 20:00
Social Studies, 15.07.2021 20:00
Mathematics, 15.07.2021 20:00
Mathematics, 15.07.2021 20:00
Computers and Technology, 15.07.2021 20:00