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理科 中学生

(③)以外の解説お願いします

カのつり合いと, 仕事とエネルギーについ て調べるため。 -次の実験 1 。。 2 を行いました。こ れに関して, あとの(1)一(4)の問いに答えなさい。 ただし, 滞車およびばねの質量. ひもの質昼 およびのび弟みは考えない ものとし. 物体と押功過の麻控 ひもと消車の間の摩擦. 空気抵 六はを いものとします。 また., 質量100g の物体にはたらく重力の大ききを1Nとします。 但 ) 2 LUUUD 質量が等しく, ともに2kg の物体A と物体Bをひもでつなぎ. そのひもを消車にかけ. 物体Aを斜西上に置いた。静かに手をはなしたところ. 物体A⑭. Bがゆっくり動きだしたの | 暫 で, 國7のように, 物体4, Bが床から同じ高きになるように., 物体Bを手で支をた。その - 後. ひもを切ると同時に物体Bから手をはなし, 物体ん,、 Bの運動のようすを調べた。 介 [ 多 1 | \ \ ヽ ゆい 実験2 たん ばねの一端と物体とをひもでつなぎ, ばねの他端を手で持ちも。ばねが斜面と平行になるよ じい うに, 実験 7 で用いた斜面上に 物体Cを置いたとこ ろ, ばねののびは 6 cm であった。 次に. ばねを手で引き, 物体Cを斜面に治ってゅっ< り0.5m引き上げ, 図2 の位置で静止させた。 物体とが移動している間, ばねののびは, つねに 6 cm であった。 1 使用したばねは, ばねに加えた力の大きさとばねの長さの関係び表のとおりである。 素 /加ぇたカの大きき(No |ュ|2 1s|4|sle|7|sls | | | ばねの長き(cm) se zshelo lalglasla (7) 実験1で, 物体A。Bを同じ高さで静止させるためには. 物体Bを何Nの力で支えればよい か。 書きなさい。 = 2) 実験 1で,ひもを切ると同時に物体Bから手をはな した場合, 物体A⑭,、 Bの高きが床からヨ -ド

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英語 高校生

教えてください

knew that whene Tn the fifth grade、we were notin the same class, but at lunch Sat in nearby assigned seats and turned around to talk to each othex were always blocking the aisle、talking too oudly and not (a)Ceat ) our lunches、but we didn't care. The teachers knew we were best friends, but we were also a disturbance.(b)Our big mouths got US { 15 ltrouble, and we were warned that we would never be in the sameclass again ifwe kept this up. 7 That summer, Molly and her brother were at my house quite often. We went swimming, played outside and practiced playing Our flutes. Summer went 【[ 16 lvery quickly, and middle school began. As the teachers had warned us、we were not in the same class. We still talked on the ph went over to each other's house, sang in the choir and Practiced < together in the band. ( c )could destroy this friendship. The seventh grade started and, again, We were not in the same class and could not sit near each other at lunch.It(d)(7.we イ.puttoatest ウ .being E.were オ.seemed カ.as if ). We both made new friends. Molly started to hang out with a new grTOUuD of people and was groWing Very popular. We spent( e ) time together and we rarely talked on the phone. At school, I would try to talk to her, but she would just ignore me. When we did take a minute to talk, one of her more popular friends would come up and Molly would just walk away with her, leaving me in the dust. It (0hurt. 1 was so confused.Tm sure she didnt know[ 17 ]thetime how badly 1 felt、 I met Erin、who was also a friend of Molly's、She was in the same gituation I was【[ 18 ]Molly.She and Molly had been close friends。and lately Molly had been treating Erin and me the same way- We decided to talk to her. The phone call was not easy. (g)Talking toherandsaving how Ifeltwas .⑩ ( 5 It was fanny, ⑪though.Whenitwasjust thetwoofus again.It w he_old

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