⑵の下線を引いてある部分の2<10の0.328乗<3の意味がわかりません。どうしてこうなるのですか？

解答(1) log101280= 801og 1012 =80log 10(2°×3) 129 log1o2%3 0.3010, log 103 =D0.4771 とする。 (1) 120は何桁行の整数か。 N (2) 120 の最高位の数字を求めよ。 10 三 10 で 0 =80(21og 102 +1og 103) =80(2× 0.3010+0.4771)=86.328 AS)3D () よって 86<1og 101280<87 ゆえに 10%<1280<107 したがって,120は87桁の整数である。 (2) (1) から log 10120 = 86+0.328 1280 = 86+0.328 log102 = 0.3010, log 103 = 0.4771 から 2<10:328 <3 2×10%く10%,328 <3×10% 2×10%<120<3×10% log 102<0.328くlog103 よって ゆえに すなわち したがって, 120の最高位の数字は 2 記+ST-xS=る+S

答えが3:2になるそうなんですがどこが違いますか？？

例1 四面体 OABC において, 辺0A の中点をM, 底面 ABC の重心を Gとする。線分OGと平面 MBCとの交点をPとするとき, OP: PG を求めてみよう。点Pは線分 OG上にあるから OF. OP = kOG 15 OF - kOG -O +OB +00 70P:006 ………のなってせを答える 1 = -&OA+kOB+ 3 となる実数んがある。 RGが課 特に OA = 20M であるから, ① に代入すると M, kOM+ kOB+ k( 3 2 3 2 P C 点Pは平面 MBC上の点であることから, 20 A< G 2の係数について B 2 を+こを+ーk=1より k= 3 3 すなわち OP OG 4 ゆえに OP:PG = 3:1 問1 例1において, OM: MA = 1:2 のとき, OP: PGを求めよ。

(4)について 操作2で水に溶けているCO₂の体積は、0⁰C基準だったものを20⁰C基準にしたので(圧力は大気圧のまま)、操作3で圧力を加えたときに成り立つ全体の式は、0.933Lに(大気圧/加えたあとの圧力)をかけないといけないと思ったのですが、この考え方のどこが間違っ... 続きを読む

次に,二酸化炭素 CO2 と水を使って, 以下の操作1~3を順次行った。 操作1 ピストンのついた容器に CO2 を 20℃, 1.013 × 10° Paにおいて,4.80L封入した(図 操作2 さらに,容器内に水を1.00L入れて 20℃, 1.013 × 10°Paで放置すると,平衡状 態となり,気相部分の体積は 操作3 最後に,温度を20℃に保ったまま圧力を A Lとなった(図3)。 B x 10° Paにすると, 平衡時の気 相部分の体積が 1.00Lになった(図 4)。 293 Lotmf. V 1え 20 ℃, 1.013 × 10° Pa 293 20 ℃、1.013 × 10° Pa 圧力を A L CO2 CO2 B ×10Pa 水を1.00L にする 20 ℃, 4.80 L< 入れる B ×10° Pa 1.00 L< CO2 1.00 LCO:の飽和水溶液 1.00 L< CO。の飽和水溶液 図 2 図 3 図 4 (2) 図3において, 水に溶解している CO2を取り出して気体に戻したときの体積(L] は,以下の(i).(i)の条件下では, それぞれいくらか。有効数字2桁で答えよ。 0.47- (i) 0℃, 1.013 × 10° Pa(標準状態)に換算して表したとき か47×108 273、 Xx- (i) 20 ℃, 1.013 × 10° Pa(平衡状態)に換算して表したとき 24 293 Yo.47 273 (3) 図3について, 空欄 に当てはまる数値を, 有効数字2桁で答えよ。 A 107 (4) 図4について, 空欄 に当てはまる数値を, 有効数字2桁で答えよ。 d、より B 293 293 4 D

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130. Nancy almost never asks for help - her work, but last week she was so overwhelmed that she did. (A) with (B) for (C) at (D) to 131. Instead of buying a car, you might want to try leasing one by ……… (A) the month. (B) a (C) its (D) this 133. Resumes with cover letters may be submitted by fax, e-mail or conventional mail, but initial inquiries may not be made in -… or by telephone. (A) oneself (B) person (C) self (D) them 107. The thief came out the front door of the liquor store and walked off that direction. (A) at (B) on (C) in (D) to 109. No one is allowed to enter the secret facility without presenting two …… of photographic identification. (A) pieces (B) acts (C) marks (D) parts 125. A lack of long-term planning contributed a sense that the company would run into trouble sooner or later. (A) to (B) with (C) for (D) at 127.…… remain several important issues to resolve, but the negotiations appear to be moving toward a successful conclusion. (A) It (B) She (C) They (D) There 130. Sometimes negotiations break down for unexpected reasons, even when the two sides have respect for one ……。 (A) other (B) the other (C) others (D) another 134. In the early 1990s, the Japanese economy struggled under a heavy bad debt burden, …with the additional problem of slow economic growth. (A) along (B) in (C) on (D) out 135.… thorough market research, it is difficult for a manufacturer to determine how well-known its brand name is, and how people will react to different style changes. (A) Unless (B) Without (C) Other than (D) Outside of 101. The train won't -- the next town for another hour or so. (B) come (A) arrive (C) get (D) reach

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……… her work, but last week she was so 130. Nancy almost never asks for help overwhelmed that she did. (A) with (B) for (C) at (D) to 131. Instead of buying a car, you might want to try leasing one by --month. (A) the (B) a (C) its (D) this 133. Resumes with cover letters may be submitted by fax, e-mail or conventional mail, but initial inquiries may not be made in or by telephone. (A) oneself (B) person (C) self (D) them 107. The thief came out the front door of the liquor store and walked off that direction. (A) at (B) on (C) in (D) to 109. No one is allowed to enter the secret facility without presenting two -…of photographic identification. (A) pieces (B) acts (C) marks (D) parts 125. A lack of long-term planning contributed a sense that the company would run into trouble sooner or later. (A) to (B) with (C) for (D) at 127.……… remain several important issues to resolve, but the negotiations appear to be moving toward a successful conclusion. (A) It (B) She (C) They (D) There 130. Sometimes negotiations break down for unexpected reasons, even when the two sides have respect for one …. (A) other (B) the other (C) others (D) another 134. In the early 1990s, the Japanese economy struggled under a heavy bad debt burden, … with the additional problem of slow economic growth. (A) along (B) in (C) on (D) out 135.……… thorough market research, it is difficult for a manufacturer to determine how well-known its brand name is, and how people will react to different style changes. (A) Unless (B) Without (C) Other than (D) Outside of 101. The train won't ……… the next town for another hour or so. (B) come (A) arrive (C) get (D) reach

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130. Nancy almost never asks for help … overwhelmed that she did. (A) with her work, but last week she was so (B) for (C) at (D) to 131. Instead of buying a car, you might want to try leasing one by month. (A) the (B) a (C) its (D) this 133. Resumes with cover letters may be submitted by fax, e-mail or conventional mail, but initial inquiries may not be made in -- or by telephone. (A) oneself (B) person (C) self (D) them 107. The thief came out the front door of the liquor store and walked off direction. (A) at that (B) on (C) in (D) to 109. No one is allowed to enter the secret facility without presenting two -…of photographic identification. (A) pieces (B) acts (C) marks (D) parts 125. A lack of long-term planning contributed a sense that the company would run into trouble sooner or later. (A) to (B) with (C) for (D) at 127.…… remain several important issues to resolve, but the negotiations appear to be moving toward a successful conclusion. (A) It (B) She (C) They (D) There 130. Sometimes negotiations break down for unexpected reasons, even when the two sides have respect for one ……。 (A) other (B) the other (C) others (D) another 134. In the early 1990s, the Japanese economy struggled under a heavy bad debt burden, … with the additional problem of slow economic growth. (A) along (B) in (C) on (D) out 135.… thorough market research, it is difficult for a manufacturer to determine how well-known its brand name is, and how people will react to different style changes. (A) Unless (B) Without (C) Other than (D) Outside of 101. The train won't …… the next town for another hour or so. (B) come (A) arrive (C) get (D) reach

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130. Nancy almost never asks for help her work, but last week she was so overwhelmed that she did. (A) with (B) for (C) at (D) to 131. Instead of buying a car, you might want to try leasing one by month. (A) the (B) a (C) its (D) this 133. Resumes with cover letters may be submitted by fax, e-mail or conventional mail, but initial inquiries may not be made in ……………or by telephone. (A) oneself (B) person (C) self (D) them 107. The thief came out the front door of the liquor store and walked off that direction. (A) at (B) on (C) in (D) to 109. No one is allowed to enter the secret facility without presenting two - …of photographic identification. (A) pieces (B) acts (C) marks (D) parts 125. A lack of long-term planning contributed …a sense that the company would run into trouble sooner or later. (A) to (B) with (C) for (D) at 127.………… remain several important issues to resolve, but the negotiations appear to be moving toward a successful conclusion. (A) It (B) She (C) They (D) There 130. Sometimes negotiations break down for unexpected reasons, even when the two sides have respect for one -…。 (A) other (B) the other (C) others (D) another 134. In the early 1990s, the Japanese economy struggled under a heavy bad debt burden, … with the additional problem of slow economic growth. (A) along (B) in (C) on (D) out 135.………… thorough market research, it is difficult for a manufacturer to determine how well-known its brand name is, and how people will react to different style changes. (A) Unless (B) Without (C) Other than (D) Outside of 101. The train won't the next town for another hour or so. (A) arrive (B) come (C) get (D) reach

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130. Nancy almost never asks for help her work, but last week she was so overwhelmed that she did. (A) with (B) for (C) at (D) to 131. Instead of buying a car, you might want to try leasing one by --month. (A) the (B) a (C) its (D) this 133. Resumes with cover letters may be submitted by fax, e-mail or conventional mail, but initial inquiries may not be made in or by telephone. (A) oneself (B) person (C) self (D) them 107. The thief came out the front door of the liquor store and walked off that direction. (A) at (B) on (C) in (D) to 109. No one is allowed to enter the secret facility without presenting two - …of photographic identification. (A) pieces (B) acts (C) marks (D) parts 125. A lack of long-term planning contributed a sense that the company would run into trouble sooner or later. (A) to (B) with (C) for (D) at 127.…… remain several important issues to resolve, but the negotiations appear to be moving toward a successful conclusion. (A) It (B) She (C) They (D) There 130. Sometimes negotiations break down for unexpected reasons, even when the two sides have respect for one…………。 (A) other (B) the other (C) others (D) another 134. In the early 1990s, the Japanese economy struggled under a heavy bad debt burden, …with the additional problem of slow economic growth. (A) along (B) in (C) on (D) out 135.… thorough market research, it is difficult for a manufacturer to determine how well-known its brand name is, and how people will react to different style changes. (A) Unless (B) Without (C) Other than (D) Outside of 101. The train won't the next town for another hour or so. (A) arrive (B) come (C) get (D) reach

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130. Nancy almost never asks for help - her work, but last week she was so overwhelmed that she did. (A) with (B) for (C) at (D) to 131. Instead of buying a car, you might want to try leasing one by month. (A) the (B) a (C) its (D) this 133. Resumes with cover letters may be submitted by fax, e-mail or conventional mail, but initial inquiries may not be made in ………or by telephone. (A) oneself (B) person (C) self (D) them 107. The thief came out the front door of the liquor store and walked off direction. (A) at that (B) on (C) in (D) to 109. No one is allowed to enter the secret facility without presenting two - …of photographic identification. (A) pieces (B) acts (C) marks (D) parts 125. A lack of long-term planning contributed …a sense that the company would run into trouble sooner or later. (A) to (B) with (C) for (D) at 127.…… remain several important issues to resolve, but the negotiations appear to be moving toward a successful conclusion. (A) It (B) She (C) They (D) There 130. Sometimes negotiations break down for unexpected reasons, even when the two sides have respect for one………。 (A) other (B) the other (C) others (D) another 134. In the early 1990s, the Japanese economy struggled under a heavy bad debt burden, …with the additional problem of slow economic growth. (A) along (B) in (C) on (D) out 135.… thorough market research, it is difficult for a manufacturer to determine how well-known its brand name is, and how people will react to different style changes. (A) Unless (B) Without (C) Other than (D) Outside of 101. The train won't the next town for another hour or so. (A) arrive (B) come (C) get (D) reach

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her work, but last week she was so 130. Nancy almost never asks for help overwhelmed that she did. (A) with (B) for (C) at (D) to 131. Instead of buying a car, you might want to try leasing one by --month. (A) the (B) a (C) its (D) this 133. Resumes with cover letters may be submitted by fax, e-mail or conventional mail, but initial inquiries may not be made in ……… or by telephone. (A) oneself (B) person (C) self (D) them 107. The thief came out the front door of the liquor store and walked off direction. (A) at that (B) on (C) in (D) to 109. No one is allowed to enter the secret facility without presenting two ……… of photographic identification. (A) pieces (B) acts (C) marks (D) parts 125. A lack of long-term planning contributed a sense that the company would run into trouble sooner or later. (A) to (B) with (C) for (D) at 127.… remain several important issues to resolve, but the negotiations appear to be moving toward a successful conclusion. (A) It (B) She (C) They (D) There 130. Sometimes negotiations break down for unexpected reasons, even when the two sides have respect for one……. (A) other (B) the other (C) others (D) another 134. In the early 1990s, the Japanese economy struggled under a heavy bad debt burden, …with the additional problem of slow economic growth. (A) along (B) in (C) on (D) out 135.…………… thorough market research, it is difficult for a manufacturer to determine how well-known its brand name is, and how people will react to different style changes. (A) Unless (B) Without (C) Other than (D) Outside of 101. The train won't the next town for another hour or so. (A) arrive (B) come (C) get (D) reach