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English Junior High

3枚目の写真のような問題って どうやって解くんですか? 私はいつも段落の最初と最後を見てるんですが 一問間違えてしまいました。ぼぼ勘だったりもするので教えて欲しいです🙇‍♀️

いる。 各問いに答えよ。なお, [1] Have you ever seen the 2D codes which have a special mark on the corners? For example, you can find the 2D codes in your textbooks. When you scan them with a tablet computer, you can see pictures or watch videos. Today, a A lot of people around the world use them in many different ways. This type of (2 2D code was invented by engineers at a car parts maker in Japan. [2] When cars are produced, many kinds of parts are needed. Car parts makers have to manage all of the car parts. About 30 years ago, car companies needed to produce more kinds of cars, and car parts makers had to manage many different kinds of car parts for each car. At that time, they used barcodes to manage the car parts, but they could not put a lot of information in one barcode. So, they used many barcodes. Workers had to scan many barcodes. A worker at a car parts maker had to scan barcodes about 1,000 times a day. It took a lot of time to scan them. The 0 000742 221101 barcode (バーコード) workers needed some help to improve their situation. [3] The engineers at a car parts maker in Japan knew the situation of the workers. They started to learn about 2D codes because 2D codes can contain more information than barcodes. There were already some types of 2D codes in the U.S. One type could contain a lot of information, but it took a lot of time to scan that type. Another type was scanned very quickly, but it contained less information than other types. The engineers at the car parts maker did not use these types. They decided to create a new type of 2D code which had both of those good points. The engineers needed a long time to create this new type which could be scanned quickly. Finally, they thought of an idea. They thought, "If a 2D code has a special mark on the three corners, it can be scanned very quickly from every angle." In this way, the new type of 2D code with special marks was invented by the engineers at a car parts maker in Japan. 2D code

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Science Junior High

最後の問題が答えは0.3Aで計算してたのですが、電圧が変わっても電流は変わらないのですか?!!

1 次の実験について (1)~(4) の問いに答えなさい。 《福島》 〔実験1] 図1のように豆電球と抵抗器を直列につなぎ, 電源装置の電圧を変 えて、豆電球に加わる電圧と豆電球に流れる電流の強さがどのように変化 するかを調べた。 入試問題 B [実験2] 図2のように豆電球と抵抗器(実験1と同じもの)を並列につなぎ, 実 験1と同様の実験を行った。 右の表は, 実験 1,2の結果の一部である。 (1) 図1の回路で, 豆電球に加わる電圧を測定するためには, 電圧 計の+端子と一端子をどこにつないだらよいか。 A,B,C,Dの中か らそれぞれ1つずつ選びなさい。 1 (1) + 端子: 一端子: 実験 1 実験 2 (2) OIC 0124 Ω (3) [ 図 1 電源装置 B 抵抗器 第2章 電流とその利用 ● ● 図2 (2) 実験1で, 豆電球に2.5Vの電圧が加わっているときの豆電球の抵抗の大きさは何Ωか。 四捨五入して小数第1位 まで求めなさい。 (4) Hecht cutes (3) 図2の回路で, 電源装置の電圧が2.5Vのとき, E,F,Gを流れる電流の強さはどのようになるか。 強い順に左から並 べなさい。 なお, E,F, Gの符号で書くこと。 ●● (4) 次の文の にあてはまる数を求めなさい。 答えは小数第1位を四捨五入し, 整数で書きなさい。 適当な抵抗器と豆電球を直列につなぐことによって, 豆電球に加わる電圧を制御できる。 図1の回路におい て 電源装置の電圧が10.0Vのとき, 豆電球に加わる電圧を2.5Vにするためには, 図に示されている抵抗器 のかわりに |Ωの抵抗器をつなげばよい。 ele 電源装置の豆電球に加わ 豆電球に流れ 電圧 〔V〕る電圧 〔V〕る電流 [A] 2.5 5.5 2.5 2.5 0.30 0.30

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