Mathematics, 07.11.2019 05:31 apowers1760
Arocket accelerates by burning its onboard fuel, so its mass decreases with time. suppose the initial mass of the rocket at liftoff (including its fuel) is m, the fuel is consumed at rate r, and the exhaust gases are ejected with constant velocity ve (relative to the rocket). a model for the velocity of the rocket at time t is given by the equationv(t) = −gt − ve lnm − rtmwhere g is the acceleration due to gravity and t is not too large. if g = 9.8 m/s2, m = 27,000 kg, r = 130 kg/s, and ve = 2,800 m/s, find the height of the rocket one minute after liftoff. (round your answer to the nearest whole meter.)9 incorrect: your answer is incorrect. m
Answers: 3
Mathematics, 21.06.2019 19:00
Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60
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Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.
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Mathematics, 21.06.2019 23:00
In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.
Answers: 3
Arocket accelerates by burning its onboard fuel, so its mass decreases with time. suppose the initia...
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