Physics, 02.11.2019 05:31 dianaparra826
Aspaceship of frontal area 10 m2 moves through a large dust cloud with a speed of 1 x 106 m/s. the mass density of the dust is 3 x 10-18 kg/m3. if all the particles of dust that impact the spaceship stick to it, find the average decelerating force that the impacting particles exert on the ship. (you may assume that the mass of dust which sticks to the spacecraft is negligible compared to the mass of the spacecraft.)
Answers: 3
Physics, 21.06.2019 21:40
Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.
Answers: 1
Physics, 22.06.2019 17:40
The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.
Answers: 1
Physics, 22.06.2019 21:20
Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s
Answers: 3
Aspaceship of frontal area 10 m2 moves through a large dust cloud with a speed of 1 x 106 m/s. the m...
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