What is the main source of energy for the Earth? A. The Sun B. The Moon C. The Stars D. The Wind 相关知识点: 试题来源: 解析 A。地球的主要能量来源是太阳。选项 B 月亮只是反射太阳的光;选项 C 星星距离地球很远,不是主要能量来源;选项 D 风是由太阳的能量引起的大气运动。
The source of energy of stars is nuclear fusion. Fusion reaction occurs at very high temperature, about 107. Energy released in the process of fusion is due to mass defect. It is also called Q-value. Q=Δmc2,Δm= mass defect. Mass equivalent to the energy 931MeV is View Solution Nuc...
Where does the sun's energy come from? What is the source of all energy in the atmosphere? What do we call energy produced by or coming from the sun? What is the ultimate source of energy for the Earth? What is the energy source of stars primarily associated with?
The origin of the highest energy cosmic rays is still unknown. The discovery of their sources is expected to reveal the workings of the most energetic astr... K Kotera,AV Olinto - 《Physics》 被引量: 291发表: 2011年 Cosmic Rays: The Most Energetic Particles in the Universe Cosmic rays ar...
( )6.WhyisJuanAbenanteRinconmentionedinthetext? A.Tomakeassessmentsontherecentstudy. B.Toconfirmthefindingsoftherecentstudy. C.Toputforwarddoubtsabouttherecentstudy. D.Toshowgreatoppositionfortherecentstudy. ( )7.WhatisCeliaKlin?sattitudetowardsthechangesinthemeaningsoffullstops? A.Disapproving. B.Con...
The bright blue large stars will have a life span of several hundred thousand years. In the constellation Orion, Betelgeuse is the star that makes the left shoulder, and Rigel makes the right foot.How Do Stars Function? How Do Stars Produce Energy? What Causes a Star to Shine Brightly?
瑞克和莫蒂第2季第6集台词 英文中文Geez, I can't believe we found a version of earth真不敢相信我们找到了这个平行宇宙里的地球...
We can infer that it is a spiral based on maps of the stars in its spiral arms, but we cannot go outside the galaxy to see this spiral structure firsthand. However, with telescopes, we can see other spiral galaxies from the outside and conclude that the Milky Way is like them. ...
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