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April 19, 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: 38,627

Physics
3 There are two charges +Q and Q/2 that locate at two positions with a separation of d as shown in Fig. 1. We may put +Q at the origin of the x-axis to facilitate the calculation. (a) Find the electric field for +Q and Q/2 at the position P. (5 points) (b) What is the total ...
Sunday, September 5, 2010 at 6:10pm by David

physics
On planet Tehar, the acceleration of gravity is the same as that on Earth but there is also a strong downward electric field with the field being uniform close to the planet's surface. A 2.16 kg ball having a charge of 4.80 uC is thrown upward at a speed of 21.0 m/s and it ...
Wednesday, September 8, 2010 at 8:00pm by VJC

Physics
An alpha particle (charge +2e and mass 6.64 x10-27 kg) is traveling to the right at 1.50 km/s. What uniform electric field (magnitude and direction) is needed to cause it to travel to the left at the same speed after 2.65 s.?
Sunday, March 10, 2013 at 12:08pm by Anonymous

Physics
An alpha particle (charge +2e and mass 6.64 x10-27 kg) is traveling to the right at 1.50 km/s. What uniform electric field (magnitude and direction) is needed to cause it to travel to the left at the same speed after 2.65 s.?
Sunday, March 10, 2013 at 12:09pm by Anonymous

Physics
An electron with a horizontal speed of 4.0 * 10^6 m/s and no vertical component of velocity passes through two horizontal parallel plates. The magnitude of the electric field between the plates is 150 n/c the plates are 6.0 long A) calculate the vertical component of the ...
Thursday, January 10, 2013 at 8:45am by Kara

physics
An object with a charge of -4.5 micro C and a mass of 1.110−2 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to its weight. A) Find the magnitude of the electric field. B)Find the direction of the electric field. upward ...
Friday, January 27, 2012 at 1:44pm by jazz

PHYSICS
A particle with a mass of 2.00x10-16 kg and a charge of 22.0 nC starts from rest, is accelerated by a strong electric field, and is fired from a small source inside a region of uniform constant magnetic field 0.660 T. The velocity of the particle is perpendicular to the field...
Saturday, July 2, 2011 at 6:43pm by jim

Electric forces
An electron is released above the earth's surface. A second electron directly below it exers just enough of an electric force on the first electron to cancel the gravitational force on it. Find the distance between the two electrons. I thought if I just set the graviational ...
Wednesday, April 11, 2007 at 7:46pm by Sara

physics
What is meant by the term uniform electric field?
Wednesday, July 27, 2011 at 2:05pm by Andy

physics
What is meant by the term "uniform electric field"?
Sunday, July 31, 2011 at 10:15pm by Minenhle

Physics
An electron with a horizontal speed of 4.0 * 10^6 m/s an no vertical component of velocity passes through two horizontal plates. The magnitude of the electric field between the plates is 150 n/c. The
Thursday, January 10, 2013 at 8:38am by Kara

Physics
A non-conducting ring of radius with a uniform charge density and a total charge is lying in the - plane, as shown in the figure below. Consider a point P, located at a distance from the center of the ring along its axis of symmetry. (a) What is the direction of the electric ...
Sunday, February 24, 2013 at 10:28pm by P

physics
On average, the electron and proton in a hydrogen atom are seperated by a distance of (5.3 x 10 -11 m), assuming the orbit of the electron to be circular, (a) what is the electric force on the electron? and (b) WHat is the electrons orbital speed? and (c) What is teh magnitude...
Wednesday, March 25, 2009 at 8:33pm by kyle

physics
the region 0 < r < r1 is a charged insulating sphere with uniform charge density _E, the region r1 < r < r2 contains free space, and the region r2 < r < r3 is an insulating spherical shell with uniform charge density ��_E. What is the electric ...
Tuesday, September 23, 2008 at 2:43pm by al

physics
An electron is moving through a magnetic field whose magnitude is 8.70*10^-4 T. The electron experiences only a magnetic force and has an acceleration of magnitude 3.50*10^14 m/s^2. At a certain instant, it has a speed of 6.80*10^6m/s. Determine the angle (less than 90degrees...
Tuesday, April 1, 2008 at 2:47pm by Kelly

Physics
an electron is launched at a 30 degree angle with respect to the horizontal and a speed of 3.0*10^6 m/s from the positive plate of the parallel plate capacitor. THe plats of the capacitor are oriented horizontally. The electron lands 5 cm away from the point of release. a) ...
Tuesday, April 27, 2010 at 1:02pm by Jordie

Physics
The electric field between the two parallel plates of an oscilloscope is 1.2 X 10^5 V/m. If an electron of energy 2 keV enters at right angles to the field, what will be its deflection if the plates are 1.5 cm long?
Wednesday, May 25, 2011 at 6:49am by Swathi

Physics
A uniform electric field of magnitude 2.7010^4 N/C makes an angle of 37 degrees with a plane surface of area 1.6010^−2 m^2 . What is the electric flux through this surface?
Monday, January 23, 2012 at 11:46pm by Cooper

physics
A uniform electric field of magnitude 2.8010 ^4 N/C makes an angle of 37 degrees with a plane surface of area 1.4010−2 m^2. A)What is the electric flux through this surface? N * m^2/C
Friday, January 27, 2012 at 1:54pm by jazz

physics
The plates of a parallel plate capacitor are separated by a distance of 1.2cm, and the electric field within the capacitor has a magnitude of 2.1x 10^6 V/m. An electron starts from rest at the negative plate and accelerates to the positive plate. What is the kinetic energy of ...
Thursday, July 10, 2008 at 11:44am by H

physics
An electron (mass m = 9.11 * 10^-31 kg) is accelerated in a uniform field vector E ( E =1.45 * 10^4 N/C) between two parallel charged plates. The seperation of the plates is 1.10 cm. The electron is accelerated from rest near the negative plate and passes through a tiny hole ...
Tuesday, January 29, 2008 at 6:07pm by jenish

physics
An electron of mass 9.11 10-31 kg has an initial speed of 3.00 105 m/s. It travels in a straight line, and its speed increases to 8.00 105 m/s in a distance of 10.0 cm. (a) Assuming its acceleration is constant, determine the force exerted on the electron. N (in the direction ...
Monday, October 17, 2011 at 10:47am by carlton

physics
An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +7.93 x 105 m/s to a final velocity of 2.90 x 106 m/s while traveling a distance of 0.0904 m. The ...
Friday, September 24, 2010 at 12:08am by char

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 +5.21 105 m/s to a final velocity of +2.29 106 m/s while traveling a distance of 0.034 m. The electron's ...
Thursday, February 9, 2012 at 5:42pm by Natasha

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 +5.21 105 m/s to a final velocity of +2.29 106 m/s while traveling a distance of 0.034 m. The electron's ...
Sunday, February 12, 2012 at 12:32am by Natasha

physics
An electron is a subatomic particle (m = 9.11 x10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.11 x 105 m/s to a final velocity of 1.67 x 106 m/s while traveling a distance of 0.0654 m. The ...
Saturday, March 10, 2012 at 7:57pm by Natasha

Physics
An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.08 x 105 m/s to a final velocity of 2.63 x 106 m/s while traveling a distance of 0.0895 m. The ...
Saturday, September 15, 2012 at 5:38pm by StressedStudent

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 +5.16 105 m/s to a final velocity of +2.23 106 m/s while traveling a distance of 0.037 m. The electron's ...
Wednesday, October 3, 2012 at 10:55pm by Anonymous

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 +5.16 105 m/s to a final velocity of +2.23 106 m/s while traveling a distance of 0.037 m. The electron's ...
Tuesday, October 9, 2012 at 9:54pm by Donald

physics
An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.46 x 105 m/s to a final velocity of 2.25 x 106 m/s while traveling a distance of 0.0803 m. The ...
Sunday, November 25, 2012 at 11:09am by John

magnetic field
A square loop with resistance R=0.001 Ohms,mass 1.0 gram, and side length 1.0 m is falling into a region of uniform magnetic field. The magnetic field has strength 1 Gauss and is pointing out of the page. The speed of the loop just before it enters the region with the uniform ...
Monday, June 7, 2010 at 3:17pm by Physics

physics
An electron is accelerated in the uniform field E = 2.0 x 104 N/C between two parallel charged plates (Negative charged plate is on the left and positively charges plate is on the right). The separation of the plates is 1.5 cm. The electron is accelerated from rest near the ...
Sunday, May 27, 2012 at 6:04pm by myra

physics
An electron in a computer monitor enters midway between two parallel oppositely charged plates. The initial speed of the electron is 6.15 x 10^7 m/s and its vertical deflection is 4.70 mm. (a) What is the magnitude of the electric field between the plates? (b) Determine the ...
Thursday, January 13, 2011 at 4:31pm by Isabell

PHYSICS
1. Why is an electric field considered to be a vector quantity? 2. Draw the electric field around an electric dipole of +1 C and -1 C 3. How many electrons have been removed from a positively charged object if it has a charge of 1.5 x 1011 C? 4. A particle with a charge - 1....
Friday, December 21, 2012 at 2:33am by Hayden

physics
explain the relationship between contours of constant potential and the electric field direction. why is the electric field a vector quantity while the electric potential is a scalar?
Monday, February 1, 2010 at 5:45pm by jake

Physics
The Earth is surrounded by an electric field on its surface that points toward the center of the Earth with an average magnitude of 150 N/C. If there is an electron that is released in vacuum at the Earths surface, what will the acceleration due to the Earths electric field ...
Monday, August 10, 2009 at 3:12pm by Victor

Physics
An electron of mass 9.11 10-31 kg has an initial speed of 2.60 105 m/s. It travels in a straight line, and its speed increases to 7.40 105 m/s in a distance of 5.20 cm. Assume its acceleration is constant. (a) Determine the magnitude of the force exerted on the electron. 1 ...
Tuesday, February 9, 2010 at 10:26pm by Anonymous

physics
A uniform electric field of magnitude 2.1010^4 makes an angle of 37 with a plane surface of area 1.6010^−2 .What is the electric flux through the surface?
Friday, January 27, 2012 at 2:13am by giga

physics
A uniform electric field of magnitude 320 V/m is directed in the negative y direction. The coordinates of point A are (-0.300, -0.450) m, and those of point B are (0.650, 0.300) m. Calculate the electric potential difference VB − VA. thanks
Sunday, March 27, 2011 at 11:15am by Rachel

physics
A uniform electric field of magnitude 320 V/m is directed in the negative y direction. The coordinates of point A are (-0.300, -0.450) m, and those of point B are (0.650, 0.300) m. Calculate the electric potential difference VB − VA. thanks
Sunday, March 27, 2011 at 12:29pm by Rachel

physics
An electron has a kinetic energy of 4.2 x 10-17 J. It moves on a circular path that is perpendicular to a uniform magnetic field of magnitude 3.3 x 10-5 T. Determine the radius of the path. The electron in the problem has Charge of the electron (q) = 1.6*10-19C Mass of the ...
Friday, April 3, 2009 at 9:32am by Determine the radius

physics
An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.11 x 105 m/s to a final velocity of 1.67 x 106 m/s while traveling a distance of 0.0654 m. The ...
Sunday, March 11, 2012 at 9:42pm by Natasha

physics
A proton travels in the x direction and enters a region where a constant uniform electric field is directed in the y direction. Derive an equation which describes the x and y cooedinates of the proton in the field as a function of time t.
Sunday, July 31, 2011 at 1:18pm by Anonymous

physics
A proton travels in the x direction and enters a region where a constant uniform electric field is directed in the y direction. Derive an equation which describes the x and y cooedinates of the proton in the field as a function of time t.
Sunday, July 31, 2011 at 1:18pm by Anonymous

Physics
An electron moving through a uniform magnetic field with a velocity of 2.0x10^6 m/s [up] experiences a maximum magnetic force of 5.1x10^-14 N [left]. CAlculate the magnitude and direction of the magnetic field.
Sunday, April 26, 2009 at 11:24pm by Susan

physics
A spring with an unstrained length of 0.074 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.1 X 10^3 kg and a net charge of +6...
Thursday, January 24, 2013 at 2:04am by frustrated

physics (answer in English)
It takes time T = L/v = 5*10^-7 s for an electron to pass through the plates. If, during that time, a strong enough electric field (V/d) is applied between the plates, the electron will strike one of the plates before it can pass through. If d is the plate separation, the ...
Saturday, May 28, 2011 at 7:29am by drwls

Physics
A spring with an unstrained length of 0.066 m and a spring constant of 2.3 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 4.84 10-3 kg and a net charge of +7.3...
Monday, January 28, 2013 at 10:41am by kjipper

PHYSICS I NEED HELP
Consider free protons following a circular path in a uniform magnetic field with a radius of 1 meter. At t = 0, the magnitude of the uniform magnetic field begins to increase at 0.001 Tesla/second. Enter the tangential acceleration of the protons in meters/second^2: positive ...
Wednesday, December 11, 2013 at 12:26pm by Aaka

physics
Two parallel plates, separated by 10 mm, are charged to a potential difference of 50 V (that is, one plate is 0 V and the other plate is 50 V). Which of the following statements are true? the electric potential at the midpoint between the plates is 50 V the electric field ...
Monday, September 13, 2010 at 2:14pm by VJC

Physics
A spring with an unstrained length of 0.076 m and a spring constant of 2.6 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.09 10-3 kg and a net charge of +6.5...
Monday, January 28, 2013 at 1:32am by Jasmine

Applied Physics
Which is a vector quantity? electric energy electric charge electric power electric field intensity
Sunday, May 29, 2011 at 5:27pm by Scott

physics
True or False When electric field lines are curved, the electric field at any point is tangent to the field line at that point.
Friday, October 30, 2009 at 3:32pm by Anonymous

Physics
An electron (mass m = 9.11e-31 kg) is accelerated in the uniform field E (E = 2.00e4 N/C) between two parallel charged plates. The separation of the plates is 1.10 cm. The electron is accelerated from rest near the negative plate and passes through a tiny hole in the positive ...
Sunday, February 6, 2011 at 11:55am by David

physics
A uniform electric field is directed upward and has a magnitude of 5 N/C. What are the magnitude and direction of the force on a charge of -3 C placed in this field? F=Eq E=5 q=-3 5(-3)=-15N Downward Ok I have the downward correct the -15 is incorrect. Did I use the wrong ...
Wednesday, July 25, 2012 at 9:18am by kkpdiluvu

physics
A small sphere of charge q = +68 C and mass m = 5.8 g is attached to a light string and placed in a uniform electric field E that makes an angle = 37a with the horizontal. The opposite end of the string is attached to a wall and the sphere is in static equilibrium when ...
Tuesday, November 6, 2012 at 5:26pm by Anonymous

physics
A small sphere of charge q = +68 C and mass m = 5.8 g is attached to a light string and placed in a uniform electric field E that makes an angle = 37a with the horizontal. The opposite end of the string is attached to a wall and the sphere is in static equilibrium when ...
Tuesday, November 6, 2012 at 5:26pm 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

Physics
What is the electric field midway between an electron and a proton separated by 0.7 nm?
Monday, December 5, 2011 at 4:38pm by Danny

Physics #43
A spring with an unstrained length of 0.076 m and a spring constant of 2.6 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.09 10-3 kg and a net charge of +6.5...
Friday, January 25, 2013 at 1:29am by Elizabeth

physics
At only 4% of the speed of light, you can neglect relativity effects and assume the electron kinetic energy starts out as (1/2)mV^2 = (1/1250)m c^2 where I used V = c/25. m is the electron mass. To stop the electron in a distance X = 0.05 m, E*X = (1/1250)mc^2 Solve for E, the...
Tuesday, July 17, 2012 at 8:01pm by drwls

physics
In a region containing a uniform electric field at right angle to the magnetic field suppose, for instance, that Vector B point in X direction and Vector E in the Z axis as shown below. What path will a particle that is released from the origin it follow. (Describe the ...
Sunday, August 28, 2011 at 11:32am by Abdulazeez

Physics
An electron strikes the back of a TV screen at 1/10 the speed of light. What is the speed of the electron? What is the momentum of the electron? What is the deBrogile wavelength of the electron?
Monday, April 7, 2008 at 5:58pm by Dana

physics
please check: Two point charges, initially 1 cm apart, are moved to a distance of 3 cm apart. By what factor do the resulting electric and gravitational forces between them change? a. 9 b. 3 c. 1/3 d. 1/9 D Two positive charges, each of magnitude q, are on the y-axis at points...
Saturday, March 14, 2009 at 8:44pm by physics

Physics - please check over
A charged particle moves at a constant velocity in a straight line through a region in space... a) is the electric field zero in the region? Explain b) is the magnetic field zero i the region? Explain I think a is yes because a charged particle will always create an electric ...
Tuesday, April 28, 2009 at 9:03pm by Lana

physics
Two very large parallel sheets are 5.00 cm apart. Sheet A carries a uniform surface charge density of -9.00 microcoulombs per meter squared, and sheet B, which is to the right of A, carries a uniform charge of -11.6 microcoulombs per meter squared. Assume the sheets are large ...
Monday, January 25, 2010 at 6:54pm by AE

Physics
PLEASE HELP WITH AS MANY AS POSSIBLE... I AM TERRIBLY CONFUSED. 1. A charge moves a distance of 1.7 cm in the direction of a uniform electric field having a magnitude of 200 N/C. The electrical potential energy of the charge decreases by 9.69095 10−19 J as it moves. ...
Tuesday, February 16, 2010 at 12:13am by Jonathan

physics
What is the quantum particle of the electric field? Answer a. The proton. b. The electron. c. The photon. d. The neutron.
Friday, October 15, 2010 at 5:50pm by jim

electric fields, showed work
imagine sitting a distance r from a charge q. you measure both the electric field and electric potential. now imagine that the charge is halved and you move three time as far away. you measure the field and potential again. b what factor has the electric field changed? by what...
Wednesday, January 28, 2009 at 4:26pm by Anonymous

physics
a thin wire with linear charge density _ is surrounded by a conducting cylindrical shell. (a) If the electric field must be zero inside a conductor, is the electric field due to the wire shielded from extending beyond the conducting shell? (b) Find the electric field as a ...
Tuesday, September 23, 2008 at 2:43pm by al

physics
The charge is Q = -10^10*e e is the electron charge, 1.6*10^-19 C You need an electric field pointed down to balance the weight of the drop. The strength of the field is given by E*Q = M*g E = M*g/Q newtons/coulomb
Thursday, July 21, 2011 at 2:19am by drwls

PHYSICS II
A uniform electric field of magnitude 3.0010^4 N/C makes an angle of 37 degrees with a plane surface of area 1.4010^−2 m^2. What is the electric flux through this surface? i got 321 using the formula electricflux = E A Cos(theta), but it's wrong.
Monday, January 17, 2011 at 3:56pm by Cassie

physics
In the figure: an electron is projected along the axis midway between the plates of a cathode-ray tube with an initial velocity of 2 x 107 m/s. The uniform electric field between the plates has an intensity of 20,000 N/C and is upward. (a) How far below the axis has the ...
Monday, August 20, 2012 at 2:16pm by renel

SIMPLE physics!!!!!!
A neutral solid conducting cylinder rotates about its axis with angular speed 1600 rad/s. In addition, there is an external magnetic field of induction B directed along the cylinder's axis. What must the magnitude of the magnetic field in Teslas so that no electric field is ...
Thursday, April 18, 2013 at 4:21am by HELP ME...uRGENT!

physics
The electric potential in a certain region is V = a x2 + b x + c, where a = 15 V/m2, b = −13 V/m, and c = 67 V. 1)Determine the electric field at x = 4 m. 2)Determine the position where the electric field is zero.
Saturday, September 24, 2011 at 11:08pm by physics

physics
a) The electric potential is -ke^2/R, where k is the Coulomb constant R is the closest orbit b) When r = 4R, the electric potential becomes -ke^2/4R^2 The wavelength emitted when the electron changes orbit is given by hc/(wavelength) = E1 - E2 Both the kinetic and electric ...
Friday, May 22, 2009 at 11:14pm by drwls

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

physics
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 19.0{\rm cm} , giving it a charge of -13.0\mu {\rm C} Find the electric field just outside the paint layer. Find the electric field 8.50{\rm cm} outside the surface of the ...
Friday, February 1, 2013 at 3:34pm by Julie

physics
Problem 21.10 A proton with an initial speed of 800000 m/s is brought to rest by an electric field. Part B - What was the potential difference that stopped the proton? = Part C - What was the initial kinetic energy of the proton, in electron volts?
Wednesday, September 14, 2011 at 12:56pm by Paige

Physics
A cube has sides of length L = 0.170 m. It is placed with one corner at the origin as shown in the figure below. The electric field is not uniform but is given by = (-6.00 N/C m)x + (2.00 N/C m)z. (a) Find the electric flux through each of the six cube faces S1, S2, S3, S4...
Friday, September 9, 2011 at 7:28pm by Shannon

physics
What is the rms value of the electric field in a sinusoidal electromagnetic wave that has a maximum electric field of 64 V/m?
Sunday, March 4, 2012 at 8:55pm by jazz

science (physics)
thank you for your help! my question is :how do you find the magnitude of the electric field that will balance the weight of an electron?
Thursday, January 20, 2011 at 7:08pm by APPRECIATIVE STUDENT

Physics
What must the charge (sign and magnitude) of a particle of mass 1.48g be for it to remain stationary when placed in a downward-directed electric field of magnitude 670N/C ? What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude...
Tuesday, September 3, 2013 at 7:17pm by Wayne

Gauss' Law!!!!!!!!!!
Can any one help me for this problem? The cube in Figure 23-27 has edge length 1.40 m and is oriented as shown in a region of uniform electric field. Find the electric flux through the right face for the following electric fields, given in newtons per coulomb. (the figure is ...
Wednesday, February 14, 2007 at 7:39pm by Lauren

physics
The voltage across a membrane forming a cell wall is 80.0 mV and the membrane is 8.80 nm thick. What is the electric field strength? (The value is surprisingly large, but correct. Membranes are discussed in Section 19.7* of the textbook.) You may assume a uniform E-field.
Sunday, February 10, 2013 at 10:26pm by taryn

physics
The voltage across a membrane forming a cell wall is 80.0 mV and the membrane is 8.80 nm thick. What is the electric field strength? (The value is surprisingly large, but correct. Membranes are discussed in Section 19.7* of the textbook.) You may assume a uniform E-field.
Sunday, February 10, 2013 at 10:34pm by taryn

physics
The voltage across a membrane forming a cell wall is 80.0 mV and the membrane is 8.80 nm thick. What is the electric field strength? (The value is surprisingly large, but correct. Membranes are discussed in Section 19.7* of the textbook.) You may assume a uniform E-field.
Sunday, February 10, 2013 at 10:36pm by taryn

Physics
Problem 21.10 A proton with an initial speed of 800000 m/s2 is brought to rest by an electric field. Part B - What was the potential difference that stopped the proton? Part C - What was the initial kinetic energy of the proton, in electron volts?
Friday, September 9, 2011 at 5:50pm by Paige

Physics
A beam of electrons traveling with a speed of 3.00 x 107 m/s enters a uniform, downward electric field of magnitude 1.17 x 104 N/C between the deflection plates of an oscilloscope (the figure below ). The initial velocity of the electrons is perpendicular to the field. The ...
Tuesday, January 31, 2012 at 10:02pm by Ashley

science
An electromagnetic field contains of both an electric field (which exerts a force on any charge) and a magnetic field (which exerts a force only on moving charges). Electric and magnetic fields are vector properties (having magnitude and direction of every point in space), but...
Thursday, December 31, 2009 at 2:35pm by drwls

PHYSICS
An electron gun is a device that sets up an electric field between two plates. The electrons start on the negative plate and thenare accelerated toward the positive plate and out a small hole in its middle if an electron in the gun feels the effect of 5.00x10^5 N/C. What is ...
Thursday, December 20, 2012 at 10:08am by lulu

Physics
Enough (n) to make n*e*E equal to the drop's weight, M g Solve for n. e is the electron charge, E is the electric field strength, and you know what g is.
Tuesday, March 29, 2011 at 9:32pm by drwls

Physics
Review Conceptual Example 2 as an aid in understanding this problem. A velocity selector has an electric field of magnitude 2607 N/C, directed vertically upward, and a horizontal magnetic field that is directed south. Charged particles, traveling east at a speed of 6.81 103 m/...
Wednesday, March 13, 2013 at 10:33am by picm

PHYSICS
Determining how the charges distribute on the surface of a conductor is, in general, a very difficult problem. We know that if we charge a conductor the charges go to the surface and redistribute so that the electric field in the conductor vanishes. One of the few shapes for ...
Thursday, March 21, 2013 at 5:16pm by Anonymous

Physics
A charge of 28.0 nC is placed in a uniform electric field that is directed verticall upward and that has a magnitude of 4.00*10^4 N/C. What work is done by the electric force when the charge moves (a)0.450 m to the right (b) 0.670 m upward (c) 2.60 m at an angle of 45 degrees ...
Monday, January 28, 2008 at 10:11pm by Harper

physics
The drawing shows a uniform electric field that points in the negative y direction; the magnitude of the field is 4540 N/C. Determine the electric potential difference the following points VB − VA between points A and B VC − VB between points B and C VA − VC ...
Saturday, January 15, 2011 at 5:33pm by Anonymous

Physics
The electric flux through the surface shown in Figure Ex27.10 is 15.0 Nm2/C, and the electric field makes an angle α = 70 with the surface. What is the electric field strength? The surface is a 10cm by 10cm square.
Monday, September 13, 2010 at 8:59am by David D.

phys
The ammonia molecule has a dipole moment of . Ammonia molecules in the gas phase are placed in a uniform electric field with magnitude 1.1106 . What is the change in electric potential energy when the dipole moment of a molecule changes its orientation with respect to from ...
Wednesday, January 30, 2013 at 8:56pm by Anonymous

Physics
If a proton is moving in a magnetic field with a speed of 4 106m/s and is executing uniform circular motion with a radius of 10 cm, what is the magnetic field?
Thursday, March 21, 2013 at 5:46pm by Lindsey

Physics
One very long wire carries a current of 30A to the left along the x-axis.A second very long wire carries a current of 50A to the right along the line(y=0.280m,z=0) A)Where in the plane of the two wires is the total magnetic field equal to zero? B)A particle with a charge of -2...
Wednesday, November 11, 2009 at 2:48pm by Sandhu

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