物理 高校生 4年以上前 英語ですみません🙇♂️この問題からcとdってどうやって求めたらいいんですか？説明お願いします🙇♂️ c) 3.81x10^3 d) 43.6% Science 10AP 2020 Use the following information to answer the next question. 18. A student exerts a force of 130 N on a wagon that has a mass of 20.0 kg to moveitata constant speed up a hil. The wagon travels 43.0 m along the slope before arriving at the top of the hill. The net vertical gain in height of the wagon is 15.0 m, as shown in the diagram below. 45.0 m 15.0 m SN 150 N= Force Y 196 N (20.0 kg) a. What is the work input by the student? b. What is the change in energy in gravitational energy of the wagon? c. What is the useful work done by the studen(? d. What js the efficiency of this energy transfer? 解決済み 回答数: 1
物理 高校生 4年以上前 問題英語ですみません🙇♂️ 二つの問題に違いがよくわかりません… 説明お願いします！グラフはどう書くのが正解ですか？ (5) 3.48m/s (10)2.02m/s $) A 3.00 kg crate is at rest in front ofa compressed spring loaded with 40.0 J of elastic potential energy at point A. The spring is released and the crate is propelled uphill. The crate passes point B, which is 0.20m above point A at a constant speed. Assume that the surface between point A and B is extremely slippery. PositionA Position B System 1) Edquation: ii) Calculate the speed of the crate as it passes point B. Page 25 of31 解決済み 回答数: 1
物理 高校生 5年弱前 見にくくてすみません🙏 1番下の計算はどのようにやってるんですか...？ 解説お願いします🙇♀️ 5、 A cartravels 250 mよ15 min 12.2 sキ0.2 s.Calculi include a raw uncertainty with youranswet fa = 57c then Aa/a = Ab + Ac Given: a = 250 m, Aa = 15 m,b= 12.2 s, Ab - Qi a=b /c= 250 / 12.2 = 20.491 ms (21 ms to 2 s 解決済み 回答数: 1
