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April 24, 2014

Search: An electron in a uniform electric field increases its speed from 2.1×107 to 3.8×107 over a distance of 1.7 .

Number of results: 4,313

Science
How many electron are in each electron shell in an atom of argon?
Sunday, October 25, 2009 at 6:31pm by ;D

Physics
An electron is a subatomic particle (m = 9.11 *10^-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.31 * 10^5 m/s to a final velocity of +2.21 * 10^6 m/s while traveling a distance of 0.040 m. The ...
Monday, September 20, 2010 at 1:49am by Gerald

Physics
The Nuclues of a Manganese atom has a net charge of +4E-18C. Its nearest electron is located 4E-10 m from the nucleus. What is the electrostatic force between the nucleus and the electron? (Hint:what is the charge of the electron? Not 1!) I believe that you'd use the equation ...
Monday, February 22, 2010 at 7:50pm by Jill

physics
a) If a photon and an electron each have the same energy of 20.0 eV, find the wavelength of each. b) If a photon and an electron each have the same wavelength of 250 nm, find the energy of each. c) You want to study an organic molecule that is about 250 nm long using either a ...
Tuesday, April 5, 2011 at 6:21am by Jennifer

Electronic Field
At some instant the velocity components of an electron moving between two charged parallel plates are vx = 1.3 105 m/s and vy = 3.6 103 m/s. Suppose that the electric field between the plates is given by E = (120 N/C) j. (a) What is the electron's acceleration in the field? m/...
Thursday, February 15, 2007 at 5:52pm by Jennifer

physics
An electron is accelerated by a 4.7 kV potential difference. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 8.0 cm?
Wednesday, April 15, 2009 at 8:25pm by Mara

physics
An electron is traveling through a region of space in which the electric field is along the +x direction and has a magnitude of 1560 N/C. What is the acceleration of the electron?
Sunday, September 12, 2010 at 1:46pm by Anonymous

physics
an electron is moving in a circular path of radius 1500 m perpendicular to a 2000 T magnetic fieldWhat is the tangential velocity of the electron?
Thursday, December 16, 2010 at 10:37am by twan

Physics
Zinc has a work function of 4.30 ev . A 4.50eV photon strikes the surface and an electron is emitted. What is the maximum possible speed of the electron?
Monday, November 28, 2011 at 5:23pm by paige

math
An electron moving along the x axis has a position given by x = 14te^-5t m, where t is in seconds. How far is the electron from the origin when it momentarily stops?
Thursday, January 19, 2012 at 2:33pm by John

Chemistry
Large jumps in ionization energy tend to occur whenever the removal of that electron disrupts an electron configuration ending in: a. ns^2 b. ns^1 c. np^6 d. np^4
Wednesday, June 5, 2013 at 11:05am by Anonymous

sport and recreation
hi my question is What is the diffrence between uniform and non uniform public services. thank you
Wednesday, January 9, 2008 at 2:23pm by Elizabeth

chemistry
How is the way metals form ions different from the way nonmetals form ions? Think about this. When Na, a metal, becomes an ion, what must it do? It has one electron in its outside shell. When Cl, a non-metal, forms an ion, what must it do? It has seven electrons in its outside...
Sunday, December 17, 2006 at 4:37pm by carter

Physics
A hydrogen atom is in its third excited state (n=4). Using Bohr theory of the atom calculate (a) the radius of the orbit, (b) the linear momentum of the electron, (c) the angular momentum of the electron (d) the kinetic energy (e) the potential energy, and (f) the total energy...
Saturday, April 28, 2012 at 3:27am by Chi

Chemistry
If the wavelength of an electron is equal to the radius of the n=2 orbit in He+, what must the velocity of the electron be? The answer is 6.88 x 10^6 m/s How do I find this? I tried E = Z^2hcRh/n^2 and E= 1/2mv^2 with Z = 1, n=2, m=9.109E-31
Sunday, December 7, 2008 at 2:48pm by Shaniquaa

chemistry
for an oxygen atom,wich requires more energy,tha addition of two electron or the removal of one electron?explain why
Saturday, September 18, 2010 at 1:32pm by kabelo

physics
An electron in a cathode-ray-tube (CRT) accelerates from 20300 m/s to 3.99 × 106 m/s over 1.34 cm. How long does the electron take to travel this distance?
Monday, March 5, 2012 at 7:55pm by anmol

Physics
An electron is moving paralel to the Earth's surface at the equator in a direction 12 degrees south of east. Its velocity is 9.2 x 10^4 m/s and a magnetic force of 9.4 x 10^-18 N is exerted on the electron. If the magnetic field points south at this location, what is the ...
Monday, February 27, 2012 at 10:38pm by Doryn

PHYSICS
An electron is initially at rest in, but not on the axis of, a solenoid that is carrying a steady current I directed as shown in the cross section below. The electron is initially at rest on the -x axis. The current in the solenoid is suddenly increaed to 2I. In what direction...
Sunday, December 15, 2013 at 5:11pm by Marc

Physics
An electron enters a parallel plate apparatus 10.0cm long and 2.0cm wide, moving horizontally at 8.0 × 10^7 m/s. (top plate is positive, electron is 1.0cm from each plate..) The potential difference between the plates is 6.0 × 10^2 V. Calculate... (a) the vertical deflection ...
Friday, February 26, 2010 at 3:16pm by Lauren

physics
how far apatr should two electrons be if the electric force each exerts on the other is equal to the weight of an electron ? ( take the mass of an electron to be Me = 9.11 x 10-31 kg ).
Friday, November 26, 2010 at 6:21am by hashi

PHYSICS
In the Bohr model of the hydrogen atom, the electron makes 6.00×10^15 rev/sec around the nucleus.What is the average current at a point on the orbit of the electron?
Monday, April 11, 2011 at 7:46pm by Mattie

Physics
A single electron orbits a lithium nucleus that contains three protons (+3e). The radius of the orbit is 1.76*10^-11m. Determine the kinetic energy of the electron.
Monday, January 27, 2014 at 12:16am by Anji

Chemistry
Explain how a non metal atom becomes negative. Lose an electron, become negative. Bob Pursley isn't at his computer right now but I don't think he would mind if I explained that ADDING an electron to a non-metal makes it become negatively charged. I agree with Dr Bob; Losing ...
Wednesday, April 18, 2007 at 1:53am by Mani

physics
Hi! could anyone help me to solve this problem please. Thank you. Question:An electron has a speed of 0.68 c. (a) Find the speed of a proton that has the same kinetic energy as the electron. (b) Find the speed of a proton that has the same momentum as the electron.
Thursday, May 6, 2010 at 2:44am by Chan

science
A free electron is captured by a proton forming a Hydrogen atom. If the electron ends up in the ground state then what is the wavelength of the photon it emits during this process?
Friday, November 21, 2008 at 12:48pm by H

Physics
A free electron is captured by a proton forming a Hydrogen atom. If the electron ends up in the ground state then what is the wavelength of the photon it emits during this process?
Friday, November 21, 2008 at 2:09pm by H

College Chem.
Determine the longest wavelength of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in K is 1.76 × 103 kJ/mol.
Wednesday, September 1, 2010 at 12:32pm by B

science
in a hydrogen atom an electron of mass 9.1*10^-31 kg revolves about a proton in a circular orbit of radius 53 ampere .calculate the centripetal acceleration electron on charge 1.6*10^-19
Tuesday, May 28, 2013 at 11:38pm by Anonymous

Chemistry
what is the electron arrangement and electron configuration of Fe3+? it loses 3 electrons so is it vanadium.... please explain.. by the way is this a transition metal? if so are there any rules?...... i dont understand!!!
Thursday, September 26, 2013 at 11:20pm by Anonymous

PHYSICS
An electron in a TV is accelerated toward the screen across a potential difference of 52.8 kV. How much kinetic energy does the electron gain while accelerating? How would you solve this?
Tuesday, February 18, 2014 at 2:37pm by Carlos gen

chemistry
The first ionization potential of the elements B, C, and N (atomic numbers 5, 6, and 7) steadily increases, but that of O is less than that of N. The best interpretation of the lower value for O is that: 1. the ionization potential of N is a maximum and the values decrease ...
Wednesday, September 15, 2010 at 12:45am by dave

physics
A mass spectrometer is designed to separate protein fragments. The fragments are ionized by removing a single electron and then enter a 0.80 T uniform magnetic field at a speed of 2.3 * 10^5 m/s. If a fragment has a mass that is 85 times the mass of the proton, what will be ...
Saturday, October 1, 2011 at 5:27pm by Paige

Molecular and Electron geometry
Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :)
Monday, February 7, 2011 at 7:02pm by Kate

physics
Let's assume you use green light (λ = 550 nm) to look at an electron. What is the uncertainty in determining the electron's velocity? Express your answer rounded up to the nearest hundredth.
Saturday, October 8, 2011 at 4:38pm by Ky

Physics
If we intercept an electron having total energy 1533 MeV that came from Vega, which is 26 ly from us, how far in light-years was the trip in the rest frame of the electron? (Answer: 8.7*10^-3 ly)
Saturday, December 15, 2012 at 6:12pm by Brian

Chemistry
Large jumps in ionization energy tend to occur whenever the removal of that electron disrupts an electron configuration ending in: a. ns2 b. ns1 c. np6 d. np4
Wednesday, June 5, 2013 at 10:56am by Anonymous

chemistry
what is the complete electron configuration and the abbreviated electron configuration of copper (II) ion? what is the complete electron configuration and the abbreviated electron configuration of bromide ion?
Wednesday, April 20, 2011 at 12:41pm by shay

AP Chemistry
Which of the following electron configurations correspond to an excited state? Identify the atoms and write the ground-state electron configuration where appropriate. If the configuration is a noble gas, enter the noble gas in brackets, for example [Ne] for F -. If the ...
Sunday, October 30, 2011 at 3:11pm by Ferdinand

PHYSICS
In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is approximately 0.542 multiplied by 10-10 m. (The actual value is 0.529 multiplied by 10-10 m.) (a) Find the electric force exerted on each particle, ...
Friday, September 13, 2013 at 3:53am by smita

physics
In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is approximately 0.542 multiplied by 10-10 m. (The actual value is 0.529 multiplied by 10-10 m.) (a) Find the electric force exerted on each particle, ...
Monday, September 16, 2013 at 9:47pm by suhani

PHYSICS
In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is approximately 0.542 multiplied by 10-10 m. (The actual value is 0.529 multiplied by 10-10 m.) (a) Find the electric force exerted on each particle, ...
Tuesday, September 17, 2013 at 9:48pm by suhani

chemistry
A particle with the mass of a proton is trapped in a box. The particle falls from the n=3 state to the n=2 state and emits 0.16 meV of energy. What is the size of the box? Please report your answer in nm. An electron is trapped in a box of length L = 100 pm. There is a single ...
Friday, September 13, 2013 at 7:43pm by Urgent help

Chemistry
Energy Level Transfer of Hydrogen's electron. For each line, determine the prinicpal energy level to which hydrogen's electron was excited. When the electron fell to the 2nd level, energy was released corresponding to each of the lines. E= 2.179X10-18 (1/n2 lo- 1/n2 hi). The ...
Wednesday, November 7, 2012 at 2:33pm by Melody

11th grade
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.17 x 10^6 m/s. find the central force acting on the electron as it revolves in a circular orbit of radius 5.42 x 10^-11m.
Sunday, December 5, 2010 at 3:33pm by Julia

Chemistry
If the wavelength if determined to be 0.018 nm, at what velocity is the electron traveling? (The mass of an electron is 9.11x10^-31kg) I know the answer is 4.0x10^7 m/s, but i cannot figure how they got this. Could someone please explain it to me and show me? Thanks!!
Monday, November 11, 2013 at 10:59pm by Chelsea

chemistry
Sodium, Na+1 and chlorine Cl-1 often react together to form a molecule they do this because sodium gives an electron away chlorine picks up the electron chlorine gives an electron away sodium picks up the electron they are near each other on the periodic table they are far ...
Monday, October 11, 2010 at 12:48pm by kaiya

college physics
In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is approximately 0.542 multiplied by 10-10 m. (The actual value is 0.529 multiplied by 10-10 m.) (a) Find the electric force exerted on each particle, ...
Wednesday, September 18, 2013 at 4:13am by suhani

college physics
In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is approximately 0.542 multiplied by 10-10 m. (The actual value is 0.529 multiplied by 10-10 m.) (a) Find the electric force exerted on each particle, ...
Saturday, September 21, 2013 at 2:43am by vishal

Chemistry
You write the electron structure like this. 1s2 2s2 2p6 3s2 3p6 3d10 4s1 is the neutral Cu atom. Remove the two outside electrons to make the Cu^+2 ion. That leaves us with 3d9 as the outside and since that is an odd number, one electron must be unpaired. And you will note ...
Tuesday, October 19, 2010 at 9:31pm by Anonymous

physics
Two parallel plates carry uniform charge densities –0.45nC/m2 and +0.45nC/m2 . Find the magnitude of the electric field between the plates. Find the magnitude of the acceleration of an electron between these plates.
Monday, February 10, 2014 at 9:51pm by jrfannin

pyhsical sciencve
In Rutherford's gold foil experiment the alpha particles pass through which part of the atom? A. the nucleus B. the proton shield C. the valence electron shell D. the electron cloud
Wednesday, May 2, 2012 at 9:43pm by m,

chemistry
The electron in the n = 5 level of a hydrogen atom emits a photon with a wavelength of 1280 nm. To what energy level does the electron move?
Friday, September 3, 2010 at 7:51pm by Dave

physics
an electron of energy 100 mev collides with a photon of wavelength 3*10^6 nm.what is the maximum energy loss suffered by the electron..
Saturday, September 7, 2013 at 9:02am by kalyan

Chem
Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a 3d electron in a copper atom, Cu. Like for the...
Friday, November 7, 2008 at 12:27pm by Vinny

Chemistry
Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a 3d electron in a copper atom, Cu. Like for the...
Sunday, November 9, 2008 at 1:07pm by Robert

Chemistry
What is the electron configuration of the complex: Fe(C2O4)3 3- I am not really quite sure how to go about doing this and whether the electron configuration are supposed to be for each atom.
Monday, April 20, 2009 at 8:35pm by Anonymous

College Physics
An electron orbits a proton at a radius of 5.38 10-11 m. What is the magnitude of the magnetic field at the proton due to the orbital motion of the electron?
Sunday, July 18, 2010 at 8:11pm by Anonymous

chemistry
An electron in a hydrogen atom relaxes to the n= 4 level, emitting light of 138 THz. What is the value of n for the level in which the electron originated?
Sunday, November 28, 2010 at 12:30pm by lorah hilpolep

science/chem
Hund's rule states that each orbital in a sublevel will contain one electron before another electron will fill an orbital? Why?
Monday, February 21, 2011 at 8:16pm by missy

Chemistry
How do you write the electron configuration of Curium (Cm) and copper (Cu)? I'm confused of writing electron configuration with d and f orbitals. Please help. Thanks.
Sunday, December 27, 2009 at 10:25pm by Anonymous

Chemistry
An electron in the n=5 level of an H atom emit a photon of wavelength 1281nm. To what energy level does the electron move? Thanks for ur help.
Friday, June 8, 2012 at 2:48pm by Yeneta

science
How does a hydrogen atom have so many spectral lines when it only has one electron? That one electron can occupy many, many different energy levels.
Friday, March 16, 2007 at 7:41am by laura

physics
Calculate the de Broglie wavelength in picometers (1 picometer =10^−12 meters) of an electron that has kinetic energy of 10 keV. The mass of an electron is 9.11 x 10^−31 kg
Saturday, December 21, 2013 at 3:49am by Henry III

chemistry
An electron in the n = 5 excited state of a hydrogen atom emits a photon of 1281 nm light. To what energy level does the electron move? Any ideas on an equation for this? Is it some kind of backward version of Rydburg Eq?
Saturday, February 5, 2011 at 12:57pm by dave

physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.
Wednesday, May 11, 2011 at 4:42pm by go

physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.
Wednesday, May 11, 2011 at 4:42pm by go

physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.
Wednesday, May 11, 2011 at 4:42pm by go

physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.
Wednesday, May 11, 2011 at 4:42pm by go

Physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.1 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.51 × 10−11 m. Answer in units of N
Tuesday, October 29, 2013 at 10:33pm by Kate

Chemistry
The energies, E, for the first few states of an unknown element are shown here in arbitrary units: n= 1, E=-21 n=2, E=-9 n=3, E=-4 n=4, E=-3 ...,... infinity, 0 A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each ...
Wednesday, March 19, 2014 at 10:33pm by tec

chemistry
Consider the last electron in Li: Values n,l,ml,and ms of 1,1,0, +1/2 are not allowable. Why not. I do not understand this question. I am not sure what the values for the last electron would be.
Sunday, October 30, 2011 at 5:32pm by Hannah

Physics
a) The x-coordinate of an electron is measured with an uncertainty of 0.20 mm. What is the xcomponent of the electron’s velocity, vx, if the minimum percentage uncertainty in a simultaneous measurement of vx is 1.0%. b) Repeat part (a) for a proton.
Thursday, April 7, 2011 at 4:23pm by B. Ramez

chemistry
Consider an electron in the ground state of hydrogen. (a)What is the least amount of energy needed to excite the ground state electron in Joules? (b) Is an electron in the ground state of hydrogen capable of absorbing a photon with energy of 1.38e-18 Joules.
Saturday, March 23, 2013 at 4:07pm by schoolgirl

Chemistry-electron configuration CONFUSED!!
I need help with electron configuration. I do not understand any of it!! I bombed a test ad have a chance to retake it. Any info on electron configuration is great! It is really hard to help you if we dont know what is wrong. Here is a site that may help. http://en.wikipedia....
Wednesday, October 25, 2006 at 11:46am by cbarnett

Chemistry
i dont understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...
Wednesday, March 5, 2008 at 6:45pm by johnny

Chemistry
I dont understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...
Wednesday, March 5, 2008 at 11:48pm by johnny

Physics
In one model of the hydrogen atom, the electron revolves in a circular orbit around the proton with a speed of 2.9x10^6 m/s. Determine the radius of the electron's orbit.
Thursday, April 8, 2010 at 9:23pm by Anonymous

Chemistry
When a sodium atom absorbs light at 330.2 nm, the 3s electron is promoted to the 4p level. How much energy would be required for ionization once the electron is in the 4p level?
Friday, May 13, 2011 at 12:52pm by Kelsey

Chemistry
When a sodium atom absorbs light at 330.2 nm, the 3s electron is promoted to the 4p level. How much energy would be required for ionization once the electron is in the 4p level?
Friday, May 13, 2011 at 12:57pm by Kelsey

algebra based physics
A proton is held at a fixed position. An electron is placed 0.85m away and released. Find the electron's speed when it's 9.0mm from the proton.
Monday, February 10, 2014 at 10:21pm by jrfannin

CSUEB
An electron is released from rest at a distance of 9 cm from a proton. How fast will the electron be moving when it is 3 cm from the proton?
Sunday, September 19, 2010 at 8:52pm by Lorena

physics
An electron and a proton are separated by 2.0 nm. (a) What is the magnitude of the force on the electron? (b) What is the net force on the system?
Thursday, February 10, 2011 at 9:54am by Jay

Physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.31 × 106 m/s.Find the central force acting on the electron as it revolves in a circular orbit of radius 4.95 × 10−11 m. Answer in units of N. Find the centripetal acceleration of the ...
Sunday, February 20, 2011 at 10:26pm by CR

Physics
It took a stopping train 41/4min to travel between two stations 11.2km apart.The train accelerated uniformly during the first 11/4min of the journey,and decelerated uniformly to rest during the last 3/2min of the journey.The train had moved with uniform speed during the ...
Sunday, July 11, 2010 at 12:34pm by Dan

PHYSICS
An electron is initially at rest in, but not on the axis of, a solenoid that is carrying a steady current I directed as shown in the cross section below (counterclockwise). The electron is initially at rest on the -x axis. The current in the solenoid is suddenly increased to ...
Tuesday, December 17, 2013 at 9:51pm by asha

physics
An electron moves from one plate to another across which there is a potential difference of 2000 V. a) Find the speed with which the electron strikes the positive plate. For this problem, I used the Potential difference equation: (2000)(1.60x10^-19)=3.2E-16=delta PE I was ...
Thursday, February 25, 2010 at 10:23pm by Linh

chemistry
Light with a wavelength of 405 nm fell on a strontium surface, and electrons were ejected. If the speed of an ejected electron is 3.39 105 m/s, what energy was expended in removing the electron from the metal?
Friday, November 12, 2010 at 10:32pm by Anonymous

chemistry
An electron in a hydrogen atom relaxes to the n= 4 level, emitting light of 138 THz . What is the value of for the level in which the electron originated? Please show each step and the equation.
Sunday, November 28, 2010 at 7:34pm by lorah hilpolep

general chemistry
An X-ray photon of wavelength 0.948nm strikes a surface. The emitted electron has a kinetic energy of 979 eV. What is the binding energy of the electron in Kjol/mol ?
Sunday, February 13, 2011 at 10:00pm by soso

College Physics II
An electric field of 2.04 kV/m and a magnetic field of 0.548 T act on a moving electron to produce no net force. If the fields are perpendicular to each other, what is the electron's speed?
Tuesday, March 22, 2011 at 8:52am by jim

physics
if 3e charge is at the origin and the magnesium nucleus is 3cm from the origin in the +x direction, at what position along the x- axis should an electron be placed so that the electron experiences no net force?
Saturday, November 9, 2013 at 1:54pm by james

Science
Explain, with the help of an appropriate labelled sketch diagram, how a hydrogen atom, which has only one electron, has so many spectral lines. The diagram of the energy levels follows...
Tuesday, March 6, 2007 at 11:09am by Adam

chemistry electron config
I need to know the predicted and actual electron configuration for Lanthanum I know for lets say Cr the predicted config is [Ar] 3d44s2 and the actual is [Ar]3d54s1 but lanthanum is different and i dont know how to do it. Any help? You can find the actual electron ...
Monday, April 2, 2007 at 12:54am by Mike

mechanics- physics
An electron moving at a speed of 5 x 10 raise to power 6m/s was shot through a sheet of paper which is 2.1 x 10 raise to power 4cm thick. The electron emerges from the paper with a speed of 2 x 10 raise to power 6 m/s. Find the time taken by the electron to pass through the ...
Sunday, January 6, 2013 at 1:43am by precious

mechanics- physics
An electron moving at a speed of 5 x 10 raise to power 6m/s was shot through a sheet of paper which is 2.1 x 10 raise to power 4cm thick. The electron emerges from the paper with a speed of 2 x 10 raise to power 6 m/s. Find the time taken by the electron to pass through the ...
Sunday, January 6, 2013 at 1:43am by precious

mechanics- physics
An electron moving at a speed of 5 x 10 raise to power 6m/s was shot through a sheet of paper which is 2.1 x 10 raise to power 4cm thick. The electron emerges from the paper with a speed of 2 x 10 raise to power 6 m/s. Find the time taken by the electron to pass through the ...
Sunday, January 6, 2013 at 1:43am by precious

mechanics- physics
An electron moving at a speed of 5 x 10 raise to power 6m/s was shot through a sheet of paper which is 2.1 x 10 raise to power 4cm thick. The electron emerges from the paper with a speed of 2 x 10 raise to power 6 m/s. Find the time taken by the electron to pass through the ...
Sunday, January 6, 2013 at 1:43am by precious

Physics
Q: From the Bohr model of the Hydrogen atom, calculate the minimum amount of energy (in eV) an electron in the lowest orbital would need to free it from its proton (i.e., to ionize the atom). A: would I use the equation: En = - 13.6 / (n^2) ? If so, an an electron in its ...
Tuesday, May 26, 2009 at 3:53pm by Tracey

Physics
Two parallel plates are 4.85 cm apart. The bottom plate is charged positively and the top plate is charged negatively, producing a uniform electric field of 5.51 x 104 N/C in the region between the plates. What is the time required for an electron, which starts at rest at the ...
Tuesday, January 31, 2012 at 8:52pm by Ashley

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