What makes the electron beam move backwards and forwards across the screen in cathode ray oscillpscopes?
Q. The deflection of a beam of electrons by an electric field is used in cathode ray oscilloscopes. What makes the electron beam move backwards and forwards across the screen? And, what makes the electron beam move up and down?
Asked by Wooo H - Fri Feb 12 05:27:53 2010 - - 2 Answers - 0 Comments
A. Yeah exactly, the deflecting magnets around the electron gun deflect the electron beam from it's original path. let me tell you how. We know that the electrons are negatively charged, and also that negatively charged particles are attracted towards positive charged substances (here plates). difflection plates are nothing but two plates having potential differnce between them. that means one has positive charge and other has negative charge of the same amount. The verticle difflection plate has its positive plate either up or down, while the horizontle positive difflection pate can be on either side of CRO (Cathod ray oscilloscope). When we have to make a displacement of the beam verticaly than we give a positive charge to the verticle… [cont.]
Answered by Rohit R - Fri Feb 12 06:18:19 2010
Q. The deflection of a beam of electrons by an electric field is used in cathode ray oscilloscopes. What makes the electron beam move backwards and forwards across the screen? And, what makes the electron beam move up and down?
Asked by Wooo H - Fri Feb 12 05:27:53 2010 - - 2 Answers - 0 Comments
A. Yeah exactly, the deflecting magnets around the electron gun deflect the electron beam from it's original path. let me tell you how. We know that the electrons are negatively charged, and also that negatively charged particles are attracted towards positive charged substances (here plates). difflection plates are nothing but two plates having potential differnce between them. that means one has positive charge and other has negative charge of the same amount. The verticle difflection plate has its positive plate either up or down, while the horizontle positive difflection pate can be on either side of CRO (Cathod ray oscilloscope). When we have to make a displacement of the beam verticaly than we give a positive charge to the verticle… [cont.]
Answered by Rohit R - Fri Feb 12 06:18:19 2010
How can you tell the number of valence electrons Selenium has by its electron configuration?
Q. The electron configuration is: 1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^10, 4p^4 . It has 6 valence electrons. Nonetheless, the valence shell is 4, and the highest number of electrons on one of the valence shell ones is 4 electrons, so how does it have 6?
Asked by hmm - Sat Dec 13 18:01:02 2008 - - 1 Answers - 0 Comments
A. The valence electrons are the electrons in the outermost shell (not subshell), which in this case corresponds to the n=4 principal energy level. Selenium indeed has 6 electrons in n=4. These are the two 4s electrons and the four 4p electrons. I hope this helps!
Answered by jpsazii - Sat Dec 13 19:38:14 2008
Q. The electron configuration is: 1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^10, 4p^4 . It has 6 valence electrons. Nonetheless, the valence shell is 4, and the highest number of electrons on one of the valence shell ones is 4 electrons, so how does it have 6?
Asked by hmm - Sat Dec 13 18:01:02 2008 - - 1 Answers - 0 Comments
A. The valence electrons are the electrons in the outermost shell (not subshell), which in this case corresponds to the n=4 principal energy level. Selenium indeed has 6 electrons in n=4. These are the two 4s electrons and the four 4p electrons. I hope this helps!
Answered by jpsazii - Sat Dec 13 19:38:14 2008
When the free electron of a free radical invades a pair of electrons of another atom forming?
Q. a new pair of electrons, (and the new pair holds the two atoms of the electrons together) does the removed electron (the third electron) move on it's own to another pair not being a part of an atom. Can electrons move without being part of an atom. Isn't that something like electricity?
Asked by Lisa - Mon Aug 27 12:29:02 2007 - - 2 Answers - 0 Comments
A. there are different issues here. radical like chlorine atom (generated by shining light onto Cl2) has been used as initial step for formation of chloroalkane. Cl-Cl -> Cl. + Cl. Cl. + H-CH3 -> HCl + .CH3 Cl. + .CH3 -> CH3Cl electrons don't move away from the atom to generate ions in nonmetal elements. but they do move away in metals, that's called delocalization or metallic bond.
Answered by Carborane - Mon Aug 27 12:38:56 2007
Q. a new pair of electrons, (and the new pair holds the two atoms of the electrons together) does the removed electron (the third electron) move on it's own to another pair not being a part of an atom. Can electrons move without being part of an atom. Isn't that something like electricity?
Asked by Lisa - Mon Aug 27 12:29:02 2007 - - 2 Answers - 0 Comments
A. there are different issues here. radical like chlorine atom (generated by shining light onto Cl2) has been used as initial step for formation of chloroalkane. Cl-Cl -> Cl. + Cl. Cl. + H-CH3 -> HCl + .CH3 Cl. + .CH3 -> CH3Cl electrons don't move away from the atom to generate ions in nonmetal elements. but they do move away in metals, that's called delocalization or metallic bond.
Answered by Carborane - Mon Aug 27 12:38:56 2007
What is the electron configuration of an electrically neutral atom of magnesium?
Q. What is the electron configuration of an electrically neutral atom of magnesium? Look at the positions of calcium, beryllium, and magnesium on the periodic table. Based on their locations, predict how many valence electrons these elements have and predict what the reactivity of these elements will generally be.
Asked by Suck it - Mon Oct 27 14:15:00 2008 - - 2 Answers - 0 Comments
A. 1S2 2S2 2P6 3S2 for a neutral atom as you go down group reactivity increase and all have 2 electrons on outermost shell when they loose the 2 electrons they become ions
Answered by mostafa saleh - Mon Oct 27 14:28:44 2008
Q. What is the electron configuration of an electrically neutral atom of magnesium? Look at the positions of calcium, beryllium, and magnesium on the periodic table. Based on their locations, predict how many valence electrons these elements have and predict what the reactivity of these elements will generally be.
Asked by Suck it - Mon Oct 27 14:15:00 2008 - - 2 Answers - 0 Comments
A. 1S2 2S2 2P6 3S2 for a neutral atom as you go down group reactivity increase and all have 2 electrons on outermost shell when they loose the 2 electrons they become ions
Answered by mostafa saleh - Mon Oct 27 14:28:44 2008
How far is the electron from the origin when it momentarily stops?
Q. An electron moving along the x axis has a position given by x = 19te^-4t m, where t is in seconds. How far is the electron from the origin when it momentarily stops?
Asked by freddydiaz25 - Wed Feb 25 00:47:53 2009 - - 1 Answers - 0 Comments
A. The electron "stops momentarily" when its velocity is 0. If x(t) = 19 t e^-4t, then v(t) = dx/dt = v(t) = 19 [e^-4t + t(-4)e^-4t] = 19 e^-4t [1 - 4t] so v(t) = 0 when [1 - 4t] = 0 solve for t and plug into x(t) to get your answer.
Answered by simplicitus - Sat Feb 28 02:55:54 2009
Q. An electron moving along the x axis has a position given by x = 19te^-4t m, where t is in seconds. How far is the electron from the origin when it momentarily stops?
Asked by freddydiaz25 - Wed Feb 25 00:47:53 2009 - - 1 Answers - 0 Comments
A. The electron "stops momentarily" when its velocity is 0. If x(t) = 19 t e^-4t, then v(t) = dx/dt = v(t) = 19 [e^-4t + t(-4)e^-4t] = 19 e^-4t [1 - 4t] so v(t) = 0 when [1 - 4t] = 0 solve for t and plug into x(t) to get your answer.
Answered by simplicitus - Sat Feb 28 02:55:54 2009
What is the change in an electron's potential energy when the electron moves from the ground to the cloud?
Q. During a particular thunderstorm, the electric potential between a cloud and the ground is Vcloud - Vground = 1.5 x 108 V, with the cloud being at the higher potential. What is the change in an electron's potential energy when the electron moves from the ground to the cloud?
Asked by Ah O - Fri Jan 22 08:57:44 2010 - - 1 Answers - 0 Comments
A. We have potential energy U = potential (V) * charge (q) So U = V*q = 1.5x10^8V*(-1.60x10^-19C) = -2.4x10^-11 J
Answered by DH - Sat Jan 23 00:20:21 2010
Q. During a particular thunderstorm, the electric potential between a cloud and the ground is Vcloud - Vground = 1.5 x 108 V, with the cloud being at the higher potential. What is the change in an electron's potential energy when the electron moves from the ground to the cloud?
Asked by Ah O - Fri Jan 22 08:57:44 2010 - - 1 Answers - 0 Comments
A. We have potential energy U = potential (V) * charge (q) So U = V*q = 1.5x10^8V*(-1.60x10^-19C) = -2.4x10^-11 J
Answered by DH - Sat Jan 23 00:20:21 2010
What is the instantaneous speed of the electron 15 nsec after leaving the cathode?
Q. An electric field applies a force of 9.11 * 10^-16 N to an electron emitted from the cathode of a cathode-ray tube at essentially zero velocity. If the field force is constant, find the time required for the electron to reach the screen 20cm from the cathode. The mass of an electron is 9.11 * 10^-31 kg.
Asked by Andre - Sat Jun 20 10:12:09 2009 - - 2 Answers - 0 Comments
A. F = -eE = 9.11*10^-16 N assuming constant force F = ma a = F/m = 9.11* 10-16 N / 9.11*10-31 kg = 1 * 10^15 m/s^2 V^2 = Vo^2 + 2gX V^2 = 2(10^15)*0.20m = 4*10^-1*10^15 = 4 * 10^14 V = 2*10^7 V = at 2*10^7 = 1*10^15 * time time = 2*10^7/10^15 = 2*10^-8 seconds or 20 nano seconds to travel to the screen 20 cm away The question in the title is whats the speed at 15 ns V = at = 1*10^15* 15*10^-9 = 15*10^6 = 1.5 *10^7 m/s at the 15 nanosecond point. hope that helps.
Answered by D g - Sat Jun 20 10:31:28 2009
Q. An electric field applies a force of 9.11 * 10^-16 N to an electron emitted from the cathode of a cathode-ray tube at essentially zero velocity. If the field force is constant, find the time required for the electron to reach the screen 20cm from the cathode. The mass of an electron is 9.11 * 10^-31 kg.
Asked by Andre - Sat Jun 20 10:12:09 2009 - - 2 Answers - 0 Comments
A. F = -eE = 9.11*10^-16 N assuming constant force F = ma a = F/m = 9.11* 10-16 N / 9.11*10-31 kg = 1 * 10^15 m/s^2 V^2 = Vo^2 + 2gX V^2 = 2(10^15)*0.20m = 4*10^-1*10^15 = 4 * 10^14 V = 2*10^7 V = at 2*10^7 = 1*10^15 * time time = 2*10^7/10^15 = 2*10^-8 seconds or 20 nano seconds to travel to the screen 20 cm away The question in the title is whats the speed at 15 ns V = at = 1*10^15* 15*10^-9 = 15*10^6 = 1.5 *10^7 m/s at the 15 nanosecond point. hope that helps.
Answered by D g - Sat Jun 20 10:31:28 2009
What is electron degeneracy? How is this concept necessary to understand a white dwarf?
Q. What is electron degeneracy? How is this concept necessary to understand a white dwarf?
Asked by SS - Fri Apr 24 19:04:47 2009 - - 2 Answers - 0 Comments
A. Electron degeneracy is a result of the extreme pressure inside a white dwarf. The electrons are compressed so tightly that they are forced into higher energy states (degenerate state). The high-energy electrons create an outward pressure that opposes the white dwarf's gravitational pressure and keeps it in an equilibrium state.
Answered by badaspie - Sat Apr 25 08:00:53 2009
Q. What is electron degeneracy? How is this concept necessary to understand a white dwarf?
Asked by SS - Fri Apr 24 19:04:47 2009 - - 2 Answers - 0 Comments
A. Electron degeneracy is a result of the extreme pressure inside a white dwarf. The electrons are compressed so tightly that they are forced into higher energy states (degenerate state). The high-energy electrons create an outward pressure that opposes the white dwarf's gravitational pressure and keeps it in an equilibrium state.
Answered by badaspie - Sat Apr 25 08:00:53 2009
Find out the electron arrangement when given the number of neutrons?
Q. I have chemistry homework, and I haven't got a clue on how to do this question. I basically have to find out the electron arrangement, when given the number of protons/ electrons/ neutrons. I don't understand electron arrangement either, so that doesn't help. So can someone tell me how to calculate electron arrangement without being too complicated? Wait, am I meant to find out what element it is from the atomic number, then look up the electron arrangement?
Asked by :D - Sat Oct 24 14:32:23 2009 - - 1 Answers - 0 Comments
A. I'll try and do it as simply as possible. The relative atomic mass (the atomic number) is at the top of a period. i believe this the number of protons which have a positive charge and neutrons which have no charge. The little number on the bottom left hand side on a period of the periodic table tells you how many electrons there are. Secondly an electron structure has several circular shells where the electrons wizz about. for example carbon has 6 electrons so in the first shell there would be 2 electrons then 4. the electron structure goes 2,8,8 so you need to find out the elements number than look it up than read the number of electrons and put in circles in 2,8,8. i really hope this helps you with it.
Answered by JP - Sat Oct 24 15:06:05 2009
Q. I have chemistry homework, and I haven't got a clue on how to do this question. I basically have to find out the electron arrangement, when given the number of protons/ electrons/ neutrons. I don't understand electron arrangement either, so that doesn't help. So can someone tell me how to calculate electron arrangement without being too complicated? Wait, am I meant to find out what element it is from the atomic number, then look up the electron arrangement?
Asked by :D - Sat Oct 24 14:32:23 2009 - - 1 Answers - 0 Comments
A. I'll try and do it as simply as possible. The relative atomic mass (the atomic number) is at the top of a period. i believe this the number of protons which have a positive charge and neutrons which have no charge. The little number on the bottom left hand side on a period of the periodic table tells you how many electrons there are. Secondly an electron structure has several circular shells where the electrons wizz about. for example carbon has 6 electrons so in the first shell there would be 2 electrons then 4. the electron structure goes 2,8,8 so you need to find out the elements number than look it up than read the number of electrons and put in circles in 2,8,8. i really hope this helps you with it.
Answered by JP - Sat Oct 24 15:06:05 2009
How to count valence electrons of an element just by looking at its electron configuration?
Q. On a multiple choice ? I had, electron configurations of various elements were given, and a ? was "which of the following elements {by looking at its electron config.} has one valence electron. The answer ended up being Cr, but how can you tell?
Asked by bloopers012345 - Fri Dec 5 01:01:47 2008 - - 1 Answers - 0 Comments
A. Valence electrons are the number of electrons in the outer most energy level. The electron configuration for Cr is [Ar] 3d5 4s1 since 4 is the outer most level, you see it has 1 electron. If you look at F, it has an electron configuration of 1s2 2s2 2p5. It's outer most level is 2 so if you add all the electrons in 2 , it = 7 valence electrons. The reason Cr is not 3d4 4s2 is that the half filled d sublevel is at a lower energy state so the e moves out of the 4s in order to give it the lower energy configuration.
Answered by photocell75 - Fri Dec 5 01:13:37 2008
Q. On a multiple choice ? I had, electron configurations of various elements were given, and a ? was "which of the following elements {by looking at its electron config.} has one valence electron. The answer ended up being Cr, but how can you tell?
Asked by bloopers012345 - Fri Dec 5 01:01:47 2008 - - 1 Answers - 0 Comments
A. Valence electrons are the number of electrons in the outer most energy level. The electron configuration for Cr is [Ar] 3d5 4s1 since 4 is the outer most level, you see it has 1 electron. If you look at F, it has an electron configuration of 1s2 2s2 2p5. It's outer most level is 2 so if you add all the electrons in 2 , it = 7 valence electrons. The reason Cr is not 3d4 4s2 is that the half filled d sublevel is at a lower energy state so the e moves out of the 4s in order to give it the lower energy configuration.
Answered by photocell75 - Fri Dec 5 01:13:37 2008
How does the electron travel when the light is turned on?
Q. Imagine that you are an electron in the outer energy level of an atom, that is of phosphorous coating of a florencent light bulb. Decribe the way you will "travel" when the light is turned on.
Asked by DoINg BeTTeR - Tue Apr 8 23:55:51 2008 - - 1 Answers - 0 Comments
A. I(electron) get kicked out of my valence band and I am free from the attraction of the nucleus. Now, there is an field around me(due to applied voltage) which pushes me towards my goal. That goal, is the terminal having lesser potential. Now, coming to travel, I will bounce off other atoms when trying to reach my goal. Due to this bounce, I will lose some energy but ultimately will complete my voyage.
Answered by bling - Wed Apr 9 00:05:48 2008
Q. Imagine that you are an electron in the outer energy level of an atom, that is of phosphorous coating of a florencent light bulb. Decribe the way you will "travel" when the light is turned on.
Asked by DoINg BeTTeR - Tue Apr 8 23:55:51 2008 - - 1 Answers - 0 Comments
A. I(electron) get kicked out of my valence band and I am free from the attraction of the nucleus. Now, there is an field around me(due to applied voltage) which pushes me towards my goal. That goal, is the terminal having lesser potential. Now, coming to travel, I will bounce off other atoms when trying to reach my goal. Due to this bounce, I will lose some energy but ultimately will complete my voyage.
Answered by bling - Wed Apr 9 00:05:48 2008
What is the electron configuration of cobalt?
Q. I am doing a project on cobalt, and i googled the question i asked above, and all i came up with is equations, but my teacher asked me to draw an electron configuration of cobalt. How am i supposed to do that? Can someone find me a picture of it so, that I can print it, and draw it from there? thank you heehee, thank you.
Asked by Back to Basiccs,! :) - Sun Mar 8 19:25:51 2009 - - 1 Answers - 0 Comments
A. a bohr model would just involve drawing as many circles with electrons on them as cobalt has electrons, and putting the neutrons and protons in the nucleus, silly.
Answered by nosferatu1290 - Sun Mar 8 19:31:10 2009
Q. I am doing a project on cobalt, and i googled the question i asked above, and all i came up with is equations, but my teacher asked me to draw an electron configuration of cobalt. How am i supposed to do that? Can someone find me a picture of it so, that I can print it, and draw it from there? thank you heehee, thank you.
Asked by Back to Basiccs,! :) - Sun Mar 8 19:25:51 2009 - - 1 Answers - 0 Comments
A. a bohr model would just involve drawing as many circles with electrons on them as cobalt has electrons, and putting the neutrons and protons in the nucleus, silly.
Answered by nosferatu1290 - Sun Mar 8 19:31:10 2009
In terms of electron configuration, what are the trends of the periodic table?
Q. I need trend explained in terms of electron configuration. The trend for atomic radius across the periodic table from left to right and down a group. Same thing for ionization energy and electronegativity. I get most of the trends, but this one is really confusing. I dunno, maybe its the wording.
Asked by TeeJay - Tue Oct 2 22:14:07 2007 - - 3 Answers - 0 Comments
A. on the periodic table the, when going across you have to count it as s1,s2,p1 and so on you count untill you get to element you want bottom of thiis web page theres a picture to help you out
Answered by johnnydepp2010 - Tue Oct 2 22:40:57 2007
Q. I need trend explained in terms of electron configuration. The trend for atomic radius across the periodic table from left to right and down a group. Same thing for ionization energy and electronegativity. I get most of the trends, but this one is really confusing. I dunno, maybe its the wording.
Asked by TeeJay - Tue Oct 2 22:14:07 2007 - - 3 Answers - 0 Comments
A. on the periodic table the, when going across you have to count it as s1,s2,p1 and so on you count untill you get to element you want bottom of thiis web page theres a picture to help you out
Answered by johnnydepp2010 - Tue Oct 2 22:40:57 2007
What happens to an electron as it absorbs a photon of light?
Q. What happens to an electron in an atom of an element when it absorbs a photon of light? I think this is asking physical changes but give me everything that you know! Thank You!
Asked by wankerfromacrosstheroad - Wed Oct 10 21:09:14 2007 - - 1 Answers - 0 Comments
A. The electron can be promoted from the ground state to a higher energy level state (one that is normally unoccupied). This is unstable and the electron will normally find a way to return to the ground state by releasing this energy (emitting light or other means). If the photon is energetic enough, it may also knock the electron off the atom, leaving it as a +1 ion.
Answered by bagalagalaga - Wed Oct 10 21:33:03 2007
Q. What happens to an electron in an atom of an element when it absorbs a photon of light? I think this is asking physical changes but give me everything that you know! Thank You!
Asked by wankerfromacrosstheroad - Wed Oct 10 21:09:14 2007 - - 1 Answers - 0 Comments
A. The electron can be promoted from the ground state to a higher energy level state (one that is normally unoccupied). This is unstable and the electron will normally find a way to return to the ground state by releasing this energy (emitting light or other means). If the photon is energetic enough, it may also knock the electron off the atom, leaving it as a +1 ion.
Answered by bagalagalaga - Wed Oct 10 21:33:03 2007
What happens when a compound gains an electron?
Q. What happens when a compound, such as O2, gains an electron? I know it becomes negatively charged but which oxygen atom would this new electron attach to?
Asked by Dude - Tue Sep 9 17:37:48 2008 - - 4 Answers - 0 Comments
A. think of electrons as a density instead of as a point... the electron density around the two atoms increases.
Answered by m w - Tue Sep 9 17:45:21 2008
Q. What happens when a compound, such as O2, gains an electron? I know it becomes negatively charged but which oxygen atom would this new electron attach to?
Asked by Dude - Tue Sep 9 17:37:48 2008 - - 4 Answers - 0 Comments
A. think of electrons as a density instead of as a point... the electron density around the two atoms increases.
Answered by m w - Tue Sep 9 17:45:21 2008
What phrase describes the electron transport chain in photosynthesis?
Q. What phrase describes the electron transport chain in photosynthesis? A. A chain of photosynthetic proteins located in the storma B. A collection of enzymes used to make ADP C. A series of proteins located in the thylakoid membrane D. A group of enzymes that carries energy to the Calvin Cycle
Asked by Reira - Mon Oct 6 22:36:27 2008 - - 2 Answers - 0 Comments
A. D
Answered by Chris M - Mon Oct 6 22:40:37 2008
Q. What phrase describes the electron transport chain in photosynthesis? A. A chain of photosynthetic proteins located in the storma B. A collection of enzymes used to make ADP C. A series of proteins located in the thylakoid membrane D. A group of enzymes that carries energy to the Calvin Cycle
Asked by Reira - Mon Oct 6 22:36:27 2008 - - 2 Answers - 0 Comments
A. D
Answered by Chris M - Mon Oct 6 22:40:37 2008
What is the magnitude of the magnetic force on the electron?
Q. An electron is moving with a speed of 3.5 x 105 m/s when it encounters a magnetic field of 0.60 T. The direction of the magnetic field makes an angle of 60.0 with respect to the velocity of the electron. What is the magnitude of the magnetic force on the electron?
Asked by army_cmb - Sun Jun 29 22:17:57 2008 - - 1 Answers - 0 Comments
A. F=qE+qV B E is electric field if there is any, V the velocity of particle here electron cross product, which you know how to handle with B the magnetic field. and q =1.6 10 power (-19)
Answered by jila - Mon Jun 30 07:33:42 2008
Q. An electron is moving with a speed of 3.5 x 105 m/s when it encounters a magnetic field of 0.60 T. The direction of the magnetic field makes an angle of 60.0 with respect to the velocity of the electron. What is the magnitude of the magnetic force on the electron?
Asked by army_cmb - Sun Jun 29 22:17:57 2008 - - 1 Answers - 0 Comments
A. F=qE+qV B E is electric field if there is any, V the velocity of particle here electron cross product, which you know how to handle with B the magnetic field. and q =1.6 10 power (-19)
Answered by jila - Mon Jun 30 07:33:42 2008
How to calculate the amount of force exerted on an electron traveling through a magnetic field?
Q. I need a little help with this problem. The formula is not in the book. I can't seem to find it on the internet either. Any help would be greatly appreciated. (question) An electron is moving through a 0.002T magnetic field. Calculate the amount of force exerted on the electron if the electron is moving at 3 x 105 m/s.
Asked by eckounltd450 - Wed Dec 3 13:42:31 2008 - - 1 Answers - 0 Comments
A. force on charged particle = q ( v * B ) given q = e= ( - ) 1.6 * 10 ^ - 19 q b = .002 T v = 3 * 10 ^ 5
Answered by Sameer Khan - Wed Dec 3 13:51:36 2008
Q. I need a little help with this problem. The formula is not in the book. I can't seem to find it on the internet either. Any help would be greatly appreciated. (question) An electron is moving through a 0.002T magnetic field. Calculate the amount of force exerted on the electron if the electron is moving at 3 x 105 m/s.
Asked by eckounltd450 - Wed Dec 3 13:42:31 2008 - - 1 Answers - 0 Comments
A. force on charged particle = q ( v * B ) given q = e= ( - ) 1.6 * 10 ^ - 19 q b = .002 T v = 3 * 10 ^ 5
Answered by Sameer Khan - Wed Dec 3 13:51:36 2008
What is the kinetic energy of the electron just as it reaches the positive plate?
Q. An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate (see the drawing). The plates are separated by a distance of 1.2 cm, and the electric field within the capacitor has a magnitude of 2.2 x 106 V/m. What is the kinetic energy of the electron just as it reaches the positive plate?
Asked by Ah O - Sat Jan 23 12:26:45 2010 - - 1 Answers - 0 Comments
A. assuming a uniform electric field V/m = J/C/m 2.2E6 J/C/m * 0.012 m * 1.6E-19 C/e- * 1 e- = ___J the potential energy at the start = the Ke at the end I get about 4.3E-15 J
Answered by Old Science Guy - Sat Jan 23 12:40:19 2010
Q. An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate (see the drawing). The plates are separated by a distance of 1.2 cm, and the electric field within the capacitor has a magnitude of 2.2 x 106 V/m. What is the kinetic energy of the electron just as it reaches the positive plate?
Asked by Ah O - Sat Jan 23 12:26:45 2010 - - 1 Answers - 0 Comments
A. assuming a uniform electric field V/m = J/C/m 2.2E6 J/C/m * 0.012 m * 1.6E-19 C/e- * 1 e- = ___J the potential energy at the start = the Ke at the end I get about 4.3E-15 J
Answered by Old Science Guy - Sat Jan 23 12:40:19 2010
What must be done to a 2s electron to make it a 3s electron?
Q. What must be done to a 2s electron to make it a 3s electron? What happens to a 3s electron when it becomes a 2s electron?
Asked by sfyankee - Mon Feb 4 23:09:30 2008 - - 2 Answers - 0 Comments
A. u need to add energy (photons) u need to take energy away (in the form of photons)
Answered by Edward Dazzles Me - Mon Feb 4 23:23:26 2008
Q. What must be done to a 2s electron to make it a 3s electron? What happens to a 3s electron when it becomes a 2s electron?
Asked by sfyankee - Mon Feb 4 23:09:30 2008 - - 2 Answers - 0 Comments
A. u need to add energy (photons) u need to take energy away (in the form of photons)
Answered by Edward Dazzles Me - Mon Feb 4 23:23:26 2008
From Yahoo Answer Search: 'electron'
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