If an electron loses 2.5E-15 J of energy in travelling from the cathode to the screen in a home computer,across what potential difference must it travel?

If an electron loses 2.5E-15 J of energy in travelling from the cathode to the screen in a home computer,across what potential difference must it travel? 一道生物关于还原剂的题The molecule that functions as the reducing agent (electron donor) in an oxidation-reduction reactionA) gains electrons and gains energy.B) loses electrons and loses energy.C) gains electrons and loses energy.D) loses If you can,I think loses memory SAT2物理中的一道题,有关Heisenberg uncertainty principleThe Heisenberg uncertainty principle states that(A)we can measure the position of an electron only if we know its momentum(B)we can measure the momentum of an electron only if we know it A wise man never loses anything if he has himself If something can be defined,then it loses its power A joke never gains an enemy but loses a friend. 一道AP物理题How many different photon frequencies can be emitted if an electron is in excited state n=4 in a hydrogen atom?A 1B 3C 5D 6E 8 if a proton has a relative mass of 1 unit and a relative charge of +1 unit .what is the接上relative mass and charge of :1.a neutron2.an electron? 英文物理题,英文高手们,帮帮忙吧~~可否翻译出原体,在给出英文答案?谢谢了!1.What is a proton,neutron, and electron?2.What is an element, mixture, molecule, and compound?3.What will determine if an object will float if is pla 英语翻译The light emitted by an electron moving from a higher to a lower energy level has a frequency directly proportional to the enegy change of the electron. 英语翻译The nuclear charge experienced by an electron is reduced by shielding by other electrons what a man will be if he loses his loving girl and hurts her badly All that i love loses half its pleasure if you are not there to share 又一道物理题,英文版,Consider an electron trapped in an infinite well whose width is 98.5pm .If it is in a state with n=15,what are (a)its energy(b)The uncertainty in its momentum(c)The uncertainty in its position.最好有个方程，好看 100分求一道物理题 If the mass of a hydrogen atom is 1.67*10^-27kg and the mass of an electron is 9.1*10^-31kg,how many electrons would be required to have a mass equivalent to one hydrogen atom? 英语 替换短语 谁来帮我一下1 It seem that never (loses interest in) playing game on his computer2 This exercise is most beneficial if practiced (for several times) a day on an empty stomach3 There are some children walking down the street, For an electron in a circle with diameter of 2 Å,Find the wave-functions and energy levels.