自然科學 大學 5年以上以前

求解

One technique proposed for recycling plastic 虹o- cery bags is to heat them at 700。C and high pressure to form carbon microspheres that can be used in a number of applications. Electron microscopy shows Some Tepresentatlve carbon microspheres obtained In this manner, where the scale is given in 了he bot- tom right corner of the figure. Determine the num- ber of carbon atoms in atypical carbon microsphere.

自然科學 大學 約6年以前

誰可以救救我這題 Pipe A has only one open end; pipe B is four times as long and has two open ends. Of the lowest 10 harmonic numbers nB of pipe B... 繼續閱讀