大學物理 功

課堂練習 1.如果你在超級市場用75N的力水平推一部購物車在走道上移 動了12m,你做了多少功? 2.一部起重機將一支重650kg的横垂直舉起23m高,接著起 重機轉向東邊移動了18m,求起重機所做的功。忽略摩擦力並 假設起重機以固定的速率移動。 3.如圖所示,一人以大小為30牛頓的力拉貨量5kg的物體,而 使物體在無摩擦力之水平面上移動2m,請問此人做多少功? 2021 Pearson Education Ltd. All Rights Reserved

普物的熱力學章節，能用不是全屬地科的內容解釋嗎🥲感恩

4. 為何鯨魚魚群冬天習慣回到北方產小鯨魚,而夏天則往南方走,請以熱力學 說明之? Why whales are used to returning to the north to produce small whales in winter, but go south in summer, please explain with thermodynamics?

求解🙏

The two masses shown in Figure are connected by three massless and frictionless pulleys. What is the magnitude of ai / a2 ? a 411 2 a2

這題有點看不懂

ch3-2DMotion pptx - PowerPoint 投影片 基於业山保 信 Acrobat 20 As = = == = BTU SA ===== 位木匠在8.8m高的屋頂上以11m/s的速率在水平方向丢出一 - H (a)木瓦落地所需的時間為何? (b)木瓦在水平方向的移動距離有多遠Joy = 0 Vo = Uox toy ) Vo = 31 m/s > 大 Jay Vox=31 m/ allow ox= Vent + karte of exarang (4-0) = Vo A (T 60.589 =

求解法 謝謝 （普通物理）

1. Consider a particle moving with the acceleration vs. time graph as in Fig. 1. a, and to are constants with unit in m/s2 and s. Assume the particle is at rest and at origin (L) at t = 0. (a) Find the velocity v(t) for each interval (i.e. 0<t< to, to <t< 2to, 2t, <t (b) Find the displacement x(t) of the particle for each interval. (c) What are the velocity and displacement of the particle at t = 3t0? Fig. 1 an 2ao w ao to to 8:03 来搜寻 co 33°C D

[大二物理系 應用數學］ 想問我的過程有哪裡錯了呢～因為跟答案不太一樣～謝謝🙏

dy dx + tan (sal) Vix)= y x dcux) doo st t tan v ft x. du i dsinu Tanv do 圣 ² dx enpolt é sinu + c en/sinol = ln 101 sin 1 y y = x + e" xo sint (sin / sint (xre) 7 y = x sin" (x+)= sin" (x+C) but ang : y = x sin "AX (A : const)

求解10xBSA怎麼解？

Exercise 1 • A5 kb plasmid DNA has two Bam HI sites. You would like to use this enzyme to digest 5ug of this DNA. How would you do? (DNA concentration: 2 mg/ml) Bam HI concentration: 20000 U/ml Unit definition of Bam HI: 1 unit enzyme can completely digest 1 ug of lambda DNA at 37 °C in 1 hour. (lambda DNA has 48500 bp and 5 Bam HI sites) The reaction needs supplement with 100 ug/ml bovine serum albumin (BSA, 10x concentration) • Calculate the volume of all ingredients and setup the reaction table.

請問這題怎麼解 要用什麼公式？

In 2014 the Philae spacecraft became the first artifact to land on a comet. Unfortunately, Philae bounced off the comet's surface and ultimately landed in a nonideal location. After its first contact, Philae was moving upward at 38 cm/s, and it rose to a maximum height of about 1 km. Estimate the gravitational acceleration of the comet, assuming it's constant (not a very good assumption in this case).

我不太會算.. 可以幫幫我嗎 感謝感謝🙏🙏 #物理

9/28課堂練習 (1)將4.2×10 m/s除以0.57 ms,並以m/s2為單位表示 (2)把3.63105 m和2.13103 km相加 (3)下列數值(a)以科學符號(scientific notation)表示 (b)有效數字(significant figure)的數 0.0008, 3.14 x 107, 2.998 x 10-9, 550 x 106, 0.014 x 109

請問有人知道這兩題的算法與答案嗎(´･ω･`)

運動與 力學 Problem6(填充題) A steel ball of mass mi = 80 g has an initial temperature Ti = 200 °C. It is immersed in m2 = 250 g of water in a copper cup of mass m3 = 100 g. The initial temperature of the water and cup is T2 = 20 °C Find the final temperature when the system reaches thermal equilibrium. (01小題) . ) SPECIFIC HEATS (20 °C AND 1 ATM) c (J/kg.K) 力學定律(25) 变(9) 與熱容量(24) P-LOS 想氣體與功(2 體運動論與內 TP-L06 NP-003 Aluminum Copper Gold Steel/Iron Lead Mercury Water Ice (-10 °C) C CJ/mol-K) 24.3 24.4 25.6 25.0 26.8 28.0 75.4 38 900 385 130 450 130 140 4190 2100 6.波動與光 7 近代物理 8.近代科技1 The final temperature= 分數= 3 可嘗試次數= 5 ° °C 相對誤差=0.05 目前剩餘2次,可繼續嘗試 9.近代科技2 : :29 10 近代科技3 量子電腦 这三 重設 X 三 VPYTHON 下午08 星期日 2021/6/13 https://physexp thu edu tw/AP/C/NP/NP-003/NP-003-T-06 php