第三小題錯在哪裡

3.)* True/false: Find the incorrect conclusions from the following sentences and correct them. (12 points) b H2 •T2 H An ideal gas changes its states isothermally through a chemical reaction. AH is zero because AH is equal to Cp x AT. H TI ® The pressure change does not contribute to the energy state (U or H) of ideal gases. P * Figure 1 is correct for illustrating the enthalpy state of real gases. Fig. 1 AT1 ATL+1a na:daalraa ahonnan kantot fo. U +- IT 1.1 D1

第一題 怎麼想

1.) True/false, multiple choice or short answer. “*” denotes more than one correct answers. (33 points) (a) Multiple Choice: I will have the largest energy transfer as expansion work from an ideal gas system 1o the surroundings if I use a process that is (3 points) (1) Isothermal and quick ;(2) adiabatic and quick ;( 3) isothermal and slow; (4) adiabatic and slow

畫線地方看不太懂 求解說謝謝

INARA WEREW 馬上練習1 如圖所示,有一半徑為R、重為W、材質均匀的光滑輪子,與 高h的階梯接觸,靜置於水平地面上。今在輪子中心處施一水 上, 平力F,使其爬上階梯,若輪子不變形,回答下列問題: (1)輪子在受到一水平力F,但尚未脫離地面,呈靜態平衡時 輪子受到哪些力?列舉並繪出其力圖 (2)承上題,列出輪子所受垂直與水平分力的方程式。 (3)以輪子與階梯的接觸點點為參考點,列出力矩方程式,在輪子中心處最少需施力多少 才能使輪子脫離地面? 《 《指考》

這題求說明 謝謝

人。 Vo 2 可不 ia 9 (在水平地面上,將質量為m 的物體以初速,仰角0,斜向拋射出去,自抛出至著地期間的 飛行時間為T,只計重力作用,則:(重力加速度g)) MVogin 9 g (以no 自抛出至著地期間,物體動量變化量的量值為 radio Sty, 方向 <a ( 2)自地出至著地期間,重力對物體作用的衡量量值為Westm3方向何下: 地地 「 (以試利用(102)的資訊,可算出飛行時間為Vosing Ying (myy Ford- g Vo EN Vocoso Vosino a Vosing your Vocable

求解此題謝謝

Gm A m th 9 2. 質量分別為m,2m,4m 的三質點排列成邊長為之正三角 形,如圖所示,則三角形之幾何重心0處的重力場強度約為? 3Gna 6Gm 8Gm 10Gm 12Gm (A) (C) - (D) - (E). p2. (² e² c2 e² 答案:C g- (B). Gm Gm 2 120° B 2m

有人會解這個嗎？想知道答案

5. (Ch. 14 - Problem 81 in Wolfson) Two loudspeakers are mounted 2.85 m apart, pointing in the same direction and producing identical sound waves of a fixed fre- quency. You're standing 10.0 m from the speakers, on the perpendicular bisector of the line between them. You move in direction parallel to the line between the speak- ers and find that the sound intensity diminishes, reaching a minimum when you've moved 2.44 m. If the sound speed is 343 m/s, what is the frequency of the sound waves?

怎麼算

and (h) specific vo 1.15 A 42 lb gas mixture has composition of 10%Ar, 20%N2, 40%CH4, 20%C2H6, and 10% H2O. Choose an appropriate basis to calculate (a) the average molecular weight and (b) the Ar-free weight composition of the mixture. (round to 10-1%) (Ar=40)

怎麼寫？ 🙏P單位跑到指數去我就不會了

Dimensional Consistency 1.9 The density of a certain liquid is given an equation of the following form p = ( AT + BT2) eCP Where pis density in g/cm3; T temperature in K; P pressure in atm; and A, B, and C are constant. The equation is assumed dimensionally consistent. What is the unit of B?

高二物理 角動量 請問左圖和右圖為何答案卻不相同？右圖的力不是也是通過支點嗎？謝謝🙏

甲 > A. 乙 TT 2 運動方向 450F 2 F </d高 do 丁 類題如右圖所示,一質點以為圓心在一 水平面上作等速圓周運動, 甲、乙、丙和丁皆在圓周上,則: (1)若以O點為參考點,質點在甲、乙和處的角動量隨時間的 變化率量值大小關係? 72 7 中 (2)若以丁點為參考點,質點在甲、乙和丙處的角動量隨時間的 變化率量值大小關係 关!是莲度! >>中 > > (1山 山)向力士通过圓u) →力時 20 甲=乙= = 0 T 力臂= -0

求解

AD "^ > Dizby To 類题3-質量為800g的棒球,以30.0 m/s 的速度,水平撞擊一垂直牆壁距 > 地面高19.6m 處後,反跳落在距離牆基 29.4 m之處,如圖所示。牆壁對球產 生之衝量大小為? m = 0,8kg 答案:35.76 kg-m/s 19.6= 30t+ ( x 9.8 x 42 19.6m 29.4m 七受 亭有 反彈速度、 t