1.One fusion reaction in the Sun releases about 25 MeV of energy.Estimate the number of such reactions that occur each second from the luminosity of the Sun,which is the rate at which it releases energy,4*10^26 W.2.The first atomic bomb released an e

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1.One fusion reaction in the Sun releases about 25 MeV of energy.Estimate the number of such reactions that occur each second from the luminosity of the Sun,which is the rate at which it releases energy,4*10^26 W.2.The first atomic bomb released an e
1.One fusion reaction in the Sun releases about 25 MeV of energy.Estimate the number of such reactions that occur each second from the luminosity of the Sun,which is the rate at which it releases energy,4*10^26 W.
2.The first atomic bomb released an energy equivalent of 1.8 101 kilotons of TNT.One kiloton of TNT is equivalent to 5.0 1012 J.Uranium-235 releases 3.21 10-11 J/atom.What was the mass of the uranium-235 that underwent fission to produce the energy of the bomb?(Note:This is NOT the mass which is converted to energy.)
3.The synchrotron at the Fermi Laboratory has a diameter of 2.0 km.Protons circling in it move at approximately the speed of light in a vacuum.
(a) How long does it take a proton to complete one revolution?
(b) The protons enter the ring at an energy of 8.0 GeV.They gain 2.1 MeV each revolution.How many revolutions must they travel before they reach 400 GeV of energy?
(c) How long does it take the protons to be accelerated to 400 GeV?
(d) How far do the protons travel during this acceleration?

1.One fusion reaction in the Sun releases about 25 MeV of energy.Estimate the number of such reactions that occur each second from the luminosity of the Sun,which is the rate at which it releases energy,4*10^26 W.2.The first atomic bomb released an e
1.One聚变反应在太阳释放约25兆电子伏的能量.估计有多少这种反应发生的第二次从每一个太阳的亮度,这是它的速度释放能量,4 * 10 ^ 26总统
2 ,第一颗原子弹爆炸释放的能量相当于180 101吨TNT炸药.1千吨TNT炸药,相当于5.0 1012年学者铀-235发布3月21日10月11日焦耳/原子.什么是质量的铀-235进行裂变产生能量的炸弹?（注：这不是大规模的转化成能量.）
三同步在费米实验室的直径为2.0公里.质子盘旋在它移动大约光速的速度在真空中进行.
（一）需要多长时间质子完成一个革命?
（二）进入环质子在8.0电子伏特的能量.他们获得2.1兆电子伏每个革命.革命必须有多少,他们的旅行才达到400电子伏特的能量?
（三）需要多长时间质子加速到400电子伏特?
（ d ）如何做质子迄今为止在这一加速旅行?

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