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

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》

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?

1.5怎麼換

Japan baseball major league, Unit Conversion 1.5 Convert 2.7104 Btu/(Ib.sec) to cal/(kg.min) (round to 10-1)

21題 教教我QAQ

Section 11.3 Angular Momentum J-s behind rmv a he ur 265 = ? a ter 30. Example 11.1: A 58.1 Iw COMP string and whirled at 18. Express the units of angular momentum (a) using only the funda- momentum of magr mental units kilogram, meter, and second; (b) in a form involving the circular path. Fir newtons; (c) in a form involving joules. marw horizontal and (b) the 19. Use data from Appendix E to make an order-of-magnitude esti- 31. Example 11.2. A stai mate for the angular momentum of our Solar System about the Max 27 the end of its lifetime galactic center. mu = 17.293 of radius 4.96 X 10' 20. A gymnast of rotational inertia 63 kg•m? is tumbling head over heels dwarf of radius 4.21 with angular momentum 460 kg•m?/s. What's her angular speed? 17.99 acted on the core, fine A 660-g hoop 95 cm in diameter is rotating at 170 rpm about its 32. Example 11.2: Astro 22. A 1.3-th-diameter golf ball has mass 45 g and is spinning at central axis. What's its angular momentum? L: 1W=0-66*(0-95) x 140x277.10 km and determin core that collapsed to 3000 rpm. Treating the golf ball as a uniform solid sphere, what's ing with a period of 4 its angular momentum? 18-3 33. Example 11.2. The s 10-598 rpm With her arms outstre Section 11.4 Conservation of Angular Momentum tational inertia is 3.5 23. A potter's wheel with rotational inertia 6.20 kg•m? is spinning (Fig. 11.6b), her rot freely at 20.0 rpm. The potter drops a 2.50-kg lump of clay onto her final spin rate? L = 6 2 x 2-1 = 12-99~13 - 2x2 22 13= 60.48)" x 2.5 W W = 2 . X z W = 20x2T 60 ²2.1 ~ 1 12.574

第21題 到底要怎麼寫ಥ_ಥ

Section 11.3 Angular Momentum J-s behind rmv a he ur 265 = ? a ter 30. Example 11.1: A 58.1 Iw COMP string and whirled at 18. Express the units of angular momentum (a) using only the funda- momentum of magr mental units kilogram, meter, and second; (b) in a form involving the circular path. Fir newtons; (c) in a form involving joules. marw horizontal and (b) the 19. Use data from Appendix E to make an order-of-magnitude esti- 31. Example 11.2. A stai mate for the angular momentum of our Solar System about the Max 27 the end of its lifetime galactic center. mu = 17.293 of radius 4.96 X 10' 20. A gymnast of rotational inertia 63 kg•m? is tumbling head over heels dwarf of radius 4.21 with angular momentum 460 kg•m?/s. What's her angular speed? 17.99 acted on the core, fine A 660-g hoop 95 cm in diameter is rotating at 170 rpm about its 32. Example 11.2: Astro 22. A 1.3-th-diameter golf ball has mass 45 g and is spinning at central axis. What's its angular momentum? L: 1W=0-66*(0-95) x 140x277.10 km and determin core that collapsed to 3000 rpm. Treating the golf ball as a uniform solid sphere, what's ing with a period of 4 its angular momentum? 18-3 33. Example 11.2. The s 10-598 rpm With her arms outstre Section 11.4 Conservation of Angular Momentum tational inertia is 3.5 23. A potter's wheel with rotational inertia 6.20 kg•m? is spinning (Fig. 11.6b), her rot freely at 20.0 rpm. The potter drops a 2.50-kg lump of clay onto her final spin rate? L = 6 2 x 2-1 = 12-99~13 - 2x2 22 13= 60.48)" x 2.5 W W = 2 . X z W = 20x2T 60 ²2.1 ~ 1 12.574

可以幫我看看為什麼不能用我圈起來的方法算？

| | 日 m d m 如圖所示,一艘質量為m的太空船,在地球與月球的; 連心線上航行,已知地球與月球的質量分別為81M與 M,且兩球心間的距離為d。若不計其他天體的影響 時,則在二者連線間,距地球 Tod 所受總重力為零。 2 M 處,太空船 81M GM m -= 0 m 司 2 r? SIM m 6.67x10 " x 81MxM / d Condo = 0. a d-KERLER ()LA || 2 x X 2 二 8|| x (d-x² 6.67 + 10 x 814 xgh 6.43% New TES (d-) 9A ),而其 dex 81 (d-x) = x ² (d- x x = 1:87 2x - T x sld - 81 d4 184 x td.x=1.92 = 、8- -) old ² 162d818oxto, doxe 2 2 sta 不 9

完全看不懂，請救救我~

IN S S NI CONS 電流 IN (A)乙丙 (B)乙丁 (C)甲丙 (D)甲丁(B)甲乙。 將一段銅線懸掛在連接電池的電線如圖所示,這段懸掛的銅線可自由擺動,將一個強磁鐵的 N極放在銅線下方,則銅線會如何移動? (A)向左移動(B)向右移動 (C)向上移動 (D)向下移動(E)不會移動。 25. (B)如圖所示為一馬蹄型電磁鐵,下列有關此電磁鐵之敘述,何者正確? (A)若電磁鐵僅一邊繞有線圈,則另一邊不會出現磁極 (B)電池的總電壓愈大,兩磁極的磁場 |-

請問17題該怎麼寫呢 請求協助🙏🙏🙏 線上等 超急！！！

90xNT .90xNool Jg=9.8 (A) 2 lay=O olm But (B)4 v=Bgh (C) 9 (D) 30 - 9oxo.) con (E) 90。 (117. 承第16題,已知這隻蟲落地前就會達到終端速,當這隻蟲的下落卖率最大,其 =9 當的為 受到的空氣阻力量值為多少牛頓? (A) O ilk 4nl L V pRq2 (B)2 下受 it 5、 → TW > YW st=0 小 a Vmax D CER 2 Ww 经 R (C) 4. (D) 6 a 4 > -D (E) 9. 18. 承第17題,這隻蟲與地面接觸 0.2秒後,由終端速率變成靜止,這個過程中蟲所受的平 均力為多少牛頓? (A) 0 F=mxa (B)4 A/ G OF = mxa 90 =mx ot 心女 9 Toffa 45

請問這題，時間怎麼算？ 答案是1.7秒 但我一直算出1.24秒

EXAMPLE 2.6 Constant Acceleration Due to Grav You toss a ball straight up at 7.3 m/s; it leaves your hand at 1.5 m above the floor. Find when it hits the floor, the maximum height it reaches, and its speed when it passes your hand on the way down.