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英文 高中

求解😖請問為什麼19.是depend (然後遇到這種的通常要怎麼判斷😭 每次看到都不會判斷到底要用原型還是ving 還是ved ) 感謝🙏

第16至20題為題組 particles that hit Earth The sun is a huge, fiery globe of gas. Every now and then, it sends out massive waves of charged 16 speeds upwards of a million kilometers an hour. These charged particles interact with our magnetic northern and southern poles, 17 a breathtaking light show that enthralls all its viewers. These light shows are known as auroras. Since Earth's magnetic field is strongest at its poles, auroras because they occur at any appear most brightly near the North and South Pole. They are not 18 time of the year. Auroras appear as slowly moving curtains, bands, spots of color, and a variety of other shapes that shift across the sky. They can also exhibit more than one color at a time. The colors, ranging from purple to green, 19 on the altitude of oxygen and nitrogen penetrated by solar energy. The most common color on view is green because it is at lower altitudes and people can see green the easiest. Photographing the breathtaking auroras is not difficult, but photos don't do them auroras is something that needs to be experienced in person. At.-speed 16. (A) at 20. Viewing (B) by (C) in (D) from 17. (A) serving as (B) checking out 18. (A) regional (B) seasonal (C) reporting to (C) universal (D) resulting in (D) normal 19. (A) to depend (B) depend (C) depending 20. (A) harm (B) wonders (C) justice (D) dependent (D) favors 1104)

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物理 高中

請問有大神教教我嗎?!我不太會判斷這個 !謝謝你🤯🥰急需要

Vy=9xt =10x4 斗向拋射的重要性質 = 2×10×16 : 80 (a) 6不計空氣阻力,在水平面將A、B兩球同時同地分別以仰角 V=30+50 =40 (考量水平,克) 37°與 53°拋出,若最大高度相等,如圖所示。有關兩球運動 B 的敘述哪些正確? 最大高度 最大高度相同 ⇒ 鉛直初速、飛行time一樣 (A) 在空中飛行時間相等(B)兩球鉛直方向的初速相同(C)A、B兩球的初速比為4: 3(D)A、B兩球的水平射程比為4:3(E)若二質點同時同地拋出,二質點在空中相遇。 +2X-10X30 RA VAL33XT Yasin ³° : VA Sin 53° = VA 4 在任一時刻,肉球高度相同, VB=3 水平位移苣不同3 =球x相撞. PB : VA (0353°XT 4 16 3x=9 = 4x5 7. 如圖所示,不計空氣阻力,在水平地面上以相同初速,不 60m 同仰角,先後斜拋同一物,第1次和第2次的最大高度分 別為20m及60m且水平射程相同。則有關此兩次的拋射, 下列敘述何者正確?(g=10m/s²) 20m 餘 免蘿田 最大高度較大者 (A)第1次在空氣中停留的時間較長(B)兩次拋射的仰角互補(C)第1次的仰角378 *(D)其初速量值為40m/s (E)水平射程為80m。 & R= 承山 2x40 Sin 30 (0330 80万 = (E 第二次98-6 V=Votat 軌跡方程式 9 0+2 ⇒20160 (Sino+(asè) Yo So 20 Vo Sina 60= 10* Sin (90°013 『體自地面斜向拋出,其軌跡方程式為x²-240x+180y=0(其中以地面為x軸、拋出點的 " 2g Volos *tano,

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自然科學 大學

為什麼[A(org)]=n[An(org)]成立 (第三張圖equation 7.9) 感謝

Experiment 7 Experiment 7 The partition of Organic acid between Water and Organic solvent Objectives Understand the partition of a solute between two immiscible solvents. Introduction A chemical analysis that is performed primarily with the aid of volumetric glassware (e.g., pipets, burets, volumetric flasks) is called a volumetric analysis. For a volumetric analysis procedure, a known quantity or a carefully measured amount of one substance reacts with a to-be-determined amount of another substance with the reaction occurring in aqueous solution. The volumes of all solutions are carefully measured with volumetric glassware. The known amount of the substance for an analysis is generally measured and available in two ways: 1. As a primary standard: An accurate mass (and thus, moles) of a solid substance is measured on a balance, dissolved in water, and then reacted with the substance being analyzed. 2. As a standard solution: A measured number of moles of substance is present in a measured volume of solution - a solution of known concentration, generally expressed as the molar concentration (or molarity) of the substance. A measured volume of the standard solution then reacts with the substance being analyzed. The reaction of the known substance with the substance to be analyzed, occurring in aqueous solution, is generally conducted by a titration procedure. The titration procedure required a buret to dispense a liquid, called the titrant, into a flask containing the analyte. A reaction is complete when stoichiometric amounts of the reacting substances are combined. In a titration this is the stoichiometric point. In this experiment the stoichiometric point for the acid-base titration is detected using a phenolphthalein indicator. Phenolphthalein is colorless in an acidic solution but pink in a basic solution. The point in the titration at which the phenolphthalein changes color is called the endpoint of the indicator. Indicators are selected so that the stoichiometric point in the titration coincides (at approximately the same pH) with the endpoint of the indicator.

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