Mathematics Senior High over 5 yearsago

この解き方を教えて下さいm(_ _)m さっぱり分かりません((T_T))

Physics Senior High over 5 yearsago

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

Physics Senior High over 8 yearsago

光電効果に出てくるKっていう文字はエネルギーを表すんですか？