Which of the following describes a simple event?
a. spinning a spinner and drawing a card fro...
Mathematics, 28.01.2020 01:31 joset238
Which of the following describes a simple event?
a. spinning a spinner and drawing a card from a deck of cards
b. tossing a coin
c. drawing 3 cards from a deck of cards
d. tossing 4 coins
Answers: 1
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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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