阿摩線上測驗 登入

最新科目

最新試卷

最新試題

50. An electric diple consists of point charges ±? a distance 2a apart. The potential at an arbitrary point P can be expressed as V(P) = k? r+ + k(−?) r− = k?(r−−r+) r+r− , where k is the Coulomb constant, r+ is the distance to the point charge +?, r− is the distance to the point charge −?. If r is the distance to the dipole center, for r ≫ a, the quantities r+, r−, and r are nearly the same as r2 ≈ r+r−. The difference between the distances from the two charges to P, that is, r− − r+, is approximately equal to 2a cos ?, where ? is the angle as shown in the figure. Eventually, the dipole potential for r ≫ a becomes V(r, ?) = k(2a?) cos ? r2 . What is the electric field ?⃗⃗ at an arbitrary position P for r ≫ a? Note that îand ?̂are unit vectors. (A) ?⃗⃗ = k(2a?) r3 [(3 cos2 ? − 1)î+ sin ? cos ? ?̂] (B) ?⃗⃗ = k(2a?) r3 [(3 sin2 ? − 1)î+ 3 sin ? cos ? ?̂] (C) ?⃗⃗ = k(2a?) r [(3 cos2 ? − 1)î+ 3 sin ? cos ? ?̂] (D) ?⃗⃗ = k(2a?) r2 [(3 cos2 ? − 1)î+ 3 sin ? cos ? ?̂] (E) ?⃗⃗ = k(2a?) r3 [(3 cos2 ? − 1)î+ 3 sin ? cos ? ?̂]

49. Consider a soap bubble and a liquid drop of the same radius. If both have the same surface tension γ, radius R, and external pressure P0, what is the relationship between the internal pressure of the soap bubble (Pbubble) and the internal pressure of the liquid drop (Pdrop)? (A) Pbubble > Pdrop (B) Pbubble < Pdrop (C) Pbubble = Pdrop (D) Cannot be compared

48. A bullet of mass m is fired horizontally with a speed v into a stationary wooden block of mass M and becomes embedded in it. If the block is suspended by a string of length L (forming a simple pendulum system), what fraction of the initial kinetic energy is lost as mechanical energy during the moment of impact? (A) m / (m + M) (B) M / (m + M) (C) m / M (D) (M - m) / (M + m)

最新申論題

四、問答(20 分) 1.請你以本土語言教師的專業,寫出一份訓練高中生參加臺中市賽複賽當中的「臺灣台語情境式演說」的培訓計畫,訓練期間是以三個月為準,比賽規則是按照 115 年全國語文競賽的臺灣台語情境式演說實施要點 為準。

(二)請你共以下的臺羅翻譯做漢字。 Tsit ê sî-tsūn, bô-tiunn-tî, tshiū-thâu-tíng tshenn-tî-á ê kiò-siann kā khùn--khì ê sè-kài kiò tsing-sîn, suà--lâi, tang-sì thiah-ha̍h, ji̍t-thâu mā ta̍uh-ta̍uh-á thàu tshut kng, tsiò tī muá-suann-phiânn ê tsháu-á kah hue-luí. Tang-pîng ê suann-thâu ná lâi ná kng, kā tshīng kui ê kuânn-thinn ê kāu-sann thǹg-tiāu, àm-tām ê sim-tsîng mā-sī. 「Tsiânn hó, guá tsáu tsit tsuā tsin-tsiànn ū kè-ta̍t, suann-tíng tō-sī siōng kín pha̍ktio̍h ji̍t-thâu ê sóo-tsāi, koh ū iām-lē ê kíng-sik sio-puê-tuè.Kā ba̍k-tsiu hiòng hn̄g ê sóo-tsāi khuànn, suann-kha ê tuā-káng, ji̍t-tshiu tshiō tī tsi̍t lîng iū tsi̍t lîng ê tsuí-iann, tán-bē-hù ê tsûn-tsiah, tō beh lâi khí-phâng.

三、短文對譯:以下是對凃至彧〈一月——寫予佇台語路懸頂的家己〉這篇文章改寫的。請你翻譯下面這篇文章。(20 分)(一)請你共以下的漢字翻譯做臺羅。寒凊的天氣籠罩土地,四界的動物猶原咧睏,塗裡的種子嘛猶未暴穎。逐工覕佇厝內,想欲欣賞無仝景緻的我,疊像棉襀被彼款的衫出門。「四序溫暖的天氣欲去佗位揣?應該是去上倚日頭的山頂。」予天氣冷甲槌槌----我是按呢想。著急欲曝著日頭,一點仔攏無躊躇就上山矣。寒冷的東北風拍蹛我的身軀,山煞愈懸愈冷,風是愈懸愈透。遐爾仔拚勢,四界走揣的我忝矣,倒佇咧倒去的樹身頂。寒凍的冷風貫入我的衫,揻入我的骨。我較睏嘛睏袂去,所致就坐佇石頭頂懸,看四箍圍仔的烏,看甲出神。

最新課程

最新主題筆記

最新討論

42.依民法規定,無行為能力人之意思表示: (A)有效 (B)無效 (C)效力未定 (D)得撤銷之

6. 依據《幼兒教育及照顧法》,為保障家長的權利及義務,幼兒園應公開 下列哪些資訊?甲、教保服務人員及其他人員之學(經)歷、證照;乙、 幼兒園評鑑報告及結果;丙、教保目標及內容;丁、衛生、安全及緊急 事件處理措施。 (A)甲乙丙 (B)甲乙丁 (C)甲丙丁 (D)乙丙丁

11 2022 年 5 月立法院三讀通過「國營臺灣鐵路股份有限公司設置條例」,作為臺鐵轉型的里程碑。下列何者正確描述此一條例對於臺鐵的組織轉型? (A)公營事業轉型為財團法人 (B)行政機關轉型為行政法人 (C)公營事業民營化 (D)公營事業公司化

12 依照我國「預算法」與「財政紀律法」的規定,在預算執行中,若發生法定歲入大幅短收的情形,行政機關應優先採取以下何種方式以抵補可能產生的預算差短? (A)辦理經費保留 (B)舉債支應 (C)提出追減歲出預算 (D)無須採取任何行動

17. Many people believe that polygraphs are simply tools to intimidate people into confessing guilt, __________ whether they are really lying. (A) regardless of (B) regardless (C) no matter of (D) no matter

3 綠色主義對於福利國家或是社會政策的看法,下列敘述何者錯誤? (A)綠色主義支持無條件基本所得 (B)綠色主義認為福利應該由國家來提供 (C)綠色主義強調個案應該具有自決能力 (D)綠色主義被批評低估社會正義以及收入不均所帶來的問題