年級

科目

問題的種類

地球科學 高中

可以教我看嗎

SCARE 19~22 題為題組 西元 2009 年 7月22日發生日全食天文現象,沙羅週期編號第 136 號。開始於印度西部 南移經日本南方小島、馬歇爾(Marshall)和吉爾伯特(Gilbert)等群島,最後終止於太平洋 (Khambhat 海灣 00:53 UT),向東經尼泊爾、孟加拉、不丹、緬甸等國及橫跨中國中部後,向東 中部(04:18 UT)。 臺灣不在全食帶上,但離全食帶較為接近,因此可見較大食分的日偏食。各地所見日偏食最 大程度依離全食帶遠近而略有差異,北部所見偏食缺角較大,越往南則略小一些, 仰角/方位 角 09:40:2957.5/91.2 09:39:4857.0/90. 9 08:22:38|39. 4/83.4 |09:39:2756.8/90.5 臺北 桃園 新竹 臺中臺南|高雄|屏東 初虧時刻 08:23:18 40.0/83.8 08:22:51 | 39.6/83.6 仰角/方位 角 08:22:24|38.9/82.8 08:22:1538.3/81.7 08:22:39 太陽 W 食甚時刻 E D 09:38:5456. 3/89.3 0.775 | 38.5/81.4 |09:38:32|55. 9/86.8 0.760 71.30% 08:22:53 38.7/81.6 09:38:57 56.2/87.1 0.765 71.80% 2009年7月 22 日臺灣各地日偏食觀測參考資料 最大食分 遮掩面積 復圓時刻 仰角/方位 角 0.848 82.40% 11:05:0276.4/107.7 11:04:1375.9/106.6 0.844 82.00% 11:03:48 75. 7/105.7 11:03:06 75. 4/102.5 11:01:59 75.0/097.4 09:38:1155.7/87.4 地球 11:02:51 75.5/096.7 【摘自:中央氣象局日食天文特報(2009/7/22)】 19.2009年7月22 日發生日全食天文現象,是因為當天月球的位置在下圖A~ D的哪一個位置?(已知箭矢方向是地球與月球公轉的方向) (A) A (B) B (C) C (D) D。 O A 0.839 圖一 0.815 81.30% 78.20% 73. 10% 11:02:1875.2/096.0

尚未解決 回答數: 1
數學 高中

求救第55題 完全看不懂他要我幹嘛

Year slenue Req) = 1932 1958 +1000 q R 9)=-1000q =74 1963 1968 COM If the price in dollars of a stereo system is given by 1000 p(q) + 1000, 1000 ² q where q represents the demand for the product, find the mar- ginal revenue when the demand is 10. 54. Profit Suppose that for the situation in Exercise 53 the cost in dollars of producing a stereo systems is given by C(q) = 0.2q2 + 69 + 50. Find the marginal profit when the demand is 10. 59. Marginal Product of Labor The output y of a manufacturing y process is a function of the size of the labor force n using the function 1990 +1000 1971 1974 = 990 197 197 19 19 1 y = kVn. The marginal product of labor, defined as dy/dn, measures the rate that output increases with the size of the labor force, and is a measure of labor productivity. (a) Show that (c) Using the a cubic f respond the rate and 200 (d) Discus descri part ( the y (e) Exp data calc ful x C(x) = 58. Money 1955-7 dy k dn an (b) How can you tell from your answer to part (a) that as the size of the labor force increases, the marginal product of labor gets smaller? This is a phenomenon known as the law of diminishing returns, discussed more in the next chapter. 56. Profit An analyst has found that a company's costs and rev- enues in dollars for a product are given by x2 C and R(x) 2x 2 5000' respectively, where x is the number of items produced. (a) Find the marginal cost function. (b) Find the marginal revenue function. (c) Using the fact that profit is the difference between revenue and costs, find the marginal profit function. (d) What value of x makes the marginal profit equal O? (e) Find the profit when the marginal profit is 0. (As we shall see in the next chapter, this process is used to find marimum profit.) A wher in bi find year (a) (C) (e) nad since

待回答 回答數: 0
1/4