What is the surface area of this photo
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Mathematics, 21.06.2019 22:00, gamallopatty
If i had 1234 apples and 1 banana what is the total amount
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Mathematics, 21.06.2019 23:40, haybales6019
Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me
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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
Chemistry, 26.11.2019 18:31
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Mathematics, 26.11.2019 18:31