Physics, 10.09.2019 17:20 heidiburgos1own6c0
Astarship travels to a planet that is 20 light years away. the astronauts stay on the planet for 2.0 years before returning at the same speed and they are greeted back on earth 52 years after they left. assume that the time needed to accelerate and decelerate is negligible. how much have the astronauts aged? (a) 15 years, (b) 20 years, (c) 22 years, (d) 30 years, (e) 32 years.
Answers: 2
Physics, 22.06.2019 13:30
Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ΒΊc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in Γ10^{-3} β3 m)
Answers: 1
Physics, 22.06.2019 16:30
The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db
Answers: 3
Physics, 22.06.2019 17:40
The first-order reaction aβ2b+c has rate constant 0.538 sβ1. if the initial concentration of a is 0.867 mol lβ1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.
Answers: 3
Astarship travels to a planet that is 20 light years away. the astronauts stay on the planet for 2.0...
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