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物理 高校生

問24のやり方が分からないので教えて欲しいです!

の関係が成立する(図8)。 容器内の気体の圧力は, 面に対して常に垂 直にはたらき,その大きさは, 容器内のどの 部分においても等しい。 2 大気の圧力 地球の大気を構成する分子も熱運動をして おり,大気中の物体に圧力(大気圧)をおよぼ 真空 水銀柱に はたらく 重力 水銀柱 0.76m ト大気圧に よる力 大気圧 atmosphericpressure す(Op.51)。大気圧は,太さが一様で一端を 閉じたガラス管中の水銀の高さを用いて, 測 定することができる。水銀を満たしたガラス 管を,図図のように, 水銀を入れた容器中に倒立させると,管の上部はほぼ直 図39 大気圧と水銀柱の高さ 空になり,水銀柱は,およそ0.76mの高さになる。このとき, 水銀柱にはた らく重力と,大気圧による力がつりあっている。このことから,地上の大気 の 圧は,ほぼ1.0×10°Paであることがわかる。 中 問24 図9で示す実験において,水銀柱の高さが0.76mとなったことから, 水銀の密 度1.36×10*kg/m° を用いて, 大気圧を計算せよ。 0気体は,温度が上がると, 分子の熱運動が激しくなり, 膨張する(③p.118)。このような気体の状態の変 化は,その圧力, 温度,体積の変化として表すことができる(Op.129~130· )。 の圧力の単位には,気圧(記号 atm) が用いられることがある。1 atm は,1.01325×10°Paと定められている。 これは,760mm(0.76m)の水銀柱に相当する圧力で, 760mmHg(水銀柱ミリメートルとよむ)とも表され る。天気予報では,大気圧の単位にヘクトパスカル(記号 hPa) が用いられている。 1hPa=10°Pa latm=1013.25hPa

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英語 高校生

この長文がどんな話なのか理解できません😥 出来れば段落ごとに要約して頂けると助かります😔 よろしくお願いします!!!!!!!!!🙇🏽‍♀️🙇🏽‍♀️

We are,(to a remarkable degree, the right distance from the right sort of star, one e 5 of ten billion and we wouldn't be here now./ We are also fortunate to orbit where we that is big enough to radiate lots of energy, but not so big as to burn itself out swiftly t 1s a curiosity bf physics that the larger a stor the more rapidly it burns. Had our sun Ocen ten times as massive、it would have evhonsted itself after ten million years instead of do. 1o0 much nearer and evervthing on Farth would have boiled away. Much rarther away and everything would have frozen. の14 m 1978, an astrophysicist named Micheel Hart made some calculations and Concluded that Earth would have been uninhabitable had it been just 1 percent rartner That's not much, and in fact it wasn't enough. percent 10 from or 5.percent closer to the Sun. The figures have since been refined and made a little more generous 5 nearer and I5 percent farther are thought to be more accurate assessments 1oI om zone of habitability - but that is still a narrow belt. To appreciate just how narrow, you have only to look at Venus. Venus 1s only ©10 15 twenty-five million miles closer to the Sun than we are. The Sun's warmth reaches it just two minutes before it touches us. In size and composition, Venus is very like Earth, but the small difference in orbital distance made all the difference to (3)how it turned out. It appears that during the early years of the solar system Venus was only slightly warmer than Earth and probably had oceans. But those few degrees of extra 20 warmth meant that Venus could not hold on to its surface water, with disastrous consequences for its climate. As its water evaporated, the hydrogen atoms escaped into space, and the oxygen atoms combined with carbon to form a dense atmosphere of the greenhouse gas CO2. Venus became stifling. Although people of my age will recall a time when astrononmers hoped that Venus might harbor life beneath its padded 25 clouds, possibly even a kind of tropical vegetation, we now know that it is much too fierce an environment for any kind of life that we can reasonably conceive of. Its surface temperature is a roasting 470 degrees centigrade (roughly 900 degrees Fahrenheit), which is hot enough to melt lead, and the atmospheric pressure at the surface is ninety times that of Earth, or more than any human body could withstand We lack the technology to make suits or even spaceships that would allow us to visit Our knowledge of Venus's surface is based on distant radar imagery and som。 disturbing noise from an unmanned Soviet probe that was dropped hopefully into the

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