Thursday
July 31, 2014

Search: What is the electric field strength at a point in space where a proton (m = 1.67 10-27 kg) experiences an acceleration of 8 million "g's"?

Number of results: 22,468

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.
February 10, 2013 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.
February 10, 2013 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.
February 10, 2013 by taryn

electric force/field
Three point charges, A = 2.2 C, B = 7.5 C, and C = -3.9 C, are located at the corners of an equilateral triangle . Find the magnitude and direction of the electric field at the position of the 2.2 C charge. magnitude = . N/C direction =
January 23, 2012 by physics

physics
How will changing the distance change the electric field strength for a given charge?
May 12, 2011 by ashley --- HELP PLEASEE!!!

physics
what is the strength of the electric field at (x,y)=(3.0m, 3.0m)? where v=(120x^2-290y^2)V, where x and y are in meters. Please explain. thanks
February 6, 2013 by senko

Physics II
When an electron moves from A to B along an electric field line, the electric field does 3.94 x 10^-19 J of work on it. What are the electric potential differences (a) Vb - Va, (b) Vc - Va, and (c) Vc - Vb?
February 13, 2011 by Scott

physics (electric field)
The drawing shows the potential at five points on a set of axes. Each of the four outer points is 6.2 x 10-4 m from the point at the origin. From the data shown, find the magnitude of the electric field in the vicinity of the origin.
January 18, 2013 by help

physics
1. which of the following is not true about magnetic field lines a) mag. field lines flow from North to South inside the magnet b) mag. field lines do not cross c) mag. field line density is proportional to field strength d) mag. field is strongest closest to the ends of a bar...
July 12, 2014 by Liz

Physical science
Physical science a 2.0g metal ball that carries a charge of 10 uC is placed into an electric field. the ball at rest at point A is accelerated to point B with a speed of 1.0 m/s. what is the electric potential difference between point A and point B?
November 25, 2012 by ann

Physics
Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m. A small positive point charge of 7 mC moves from a distance of 9 cm to a distance of 17 cm. How much work is done by the electric field?
February 11, 2010 by Joanna

PHYSICS
A charged disk of radius R that carries a surface charge density produces an electric field at a point a perpendicular distance z from the center of the disk, given by: Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A particle of charge -4.5...
February 11, 2010 by Heidi

Physics
Which of the following is the correct relationship between the electric field strength and the potential difference?
May 31, 2013 by tanya

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 ...
September 5, 2010 by David

Physics
Two charges, -2.0 micro C and -6.0 micro C, are located at (-0.65 m, 0) and (0.65 m, 0), respectively. There is a point on the x-axis between the two charges where the electric field is zero. Find the location of the point where the electric field is zero.
March 26, 2011 by Ben

physics
At a certain distance from a point charge, the potential due to the charge is |5.93 V, and the magnitude of the electric field is 13.5 V/m. (Take the potential to be zero at infinity.) Is the electric field directed toward or away from the charge? Here is my attempt. Since ...
February 25, 2008 by Samantha

physics
Two point charges, q1 and q2, are placed 0.30 m apart on the x-axis, as shown in the figure above. Charge q1 has a value of 3.0 x 109 C. The net electric field at point P is zero Q: Calculate the magnitude of charge q2. Q: Calculate the magnitude of the electric force on q2 ...
February 23, 2012 by Kayberlynn

physics
1.)In an electric potential the charge is moving from infinity to a given point. Is that infinity point is within the electric field or outside of it? 2.)Is electric potential difference and voltage are same? 3.)Are electric potential and voltage same?
October 5, 2013 by ramesh reddy

physics
When an electron moves from A to B along an electric field line in Fig. 24-29, the electric field does 3.66 x 10-19 J of work on it. What are the electric potential differences (a)VB - VA, (b)VC - VA, and (c)VC - VB? in the picture there r four field lines going from down to ...
April 15, 2009 by sweety

3 physics question please help quick
Two point charges of opposite sign are brought close together. Which statement best describes the field lines of the combined point charges? (Points : 1) The field lines from the positive charge point toward the negative charge. The field lines from the positive charge point ...
April 21, 2014 by Sara

electric field intensity
Two 2.0 g spheres are suspended by 10.0 cm long light strings. A uniform electric field is applied in the x direction. If the spheres have charges of -5.0 10-8 C and +5.0 10-8 C, determine the electric field intensity that enables the spheres to be in equilibrium at = 10.
January 17, 2009 by tony

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
March 27, 2011 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
March 27, 2011 by Rachel

electric fields *easy
A charged particle is at the origin of coordinates. The particle produces an electric field of 4 kN/C at the point with position vector 36 cm. At what location does the field have the value 1 kN/C? Ans: 72 cm Could someone please explain to me what equation I would use and how...
June 5, 2010 by Physics

physics....
The universal law of gravitation describes the force of gravity between two bodies. What does it say about the strength of the gravitational field? How does the size of the object affect the use of the gravitational field equation? i know that the gravitational field strength ...
June 1, 2012 by kennedy

physics
WA -10.0 nC point charge and a +20.0 nC point charge are 15.0cm apart on the x-axis.hat is the electric potential at the point on the x-axis where the electric field is zero?
September 4, 2013 by abby

Intro T Electrical Engineering
A solid metal sphere with radius 0.430{\rm m} carries a net charge of 0.210{\rm nC} . Find the magnitude of the electric field at a point 0.112{\rm m} outside the surface of the sphere. Find the magnitude of the electric field at a point inside the sphere, 0.112{\rm m} below ...
September 18, 2012 by Habib. L

Physics
Consider a semi-infinite nonconducting rod (that extends infinitely to the right only) and has a uniform charge density. Calculate the magnitude and direction of the electric field at the point, P, which is a distance of R away from the edge of the rod. Does the angle of the...
November 24, 2010 by Ri

Physics - electric field intesity (check +help)
Points A and B are 13.0 apart. A charge of +8.0mu is placed at A and another charge at +5.0mu is placed at B. Point P i located 5.0cm from A and 12.0cm from B. What is the magnitude and direction of the electric field intensity at P? Ans: i got the magnitude as 2.9*10^, ...
December 4, 2010 by Farah

physics
a point charge q1= -4.00nC is at a point (0.6,0.8) in the xy axis, and a second point charge q2=4.73nC is at the point (0.6,0), calculate the magnitude and direction of the net electric field at the origin due to these two points. Ive tried calculating the two separate ...
December 5, 2011 by mo

physics
what kind of force field surrounds a stationary electric charge? What additional field surrounds it when it moves? "what kind of force field surrounds a stationary electric charge?" Electric field. "What additional field surrounds it when it moves?" Magnetic field. THANK YOU ...
December 4, 2006 by amy

Physics
Given a square of sidelength a = 4 cm. We place a charged particle at each corner, three of them carry + 2 nC of charge and one carries the same amount of negative charge. What is the magnitude of the electric field at the center of the square? I read a previous post for a ...
February 6, 2010 by Sandra

Physics
What equation illustrates the relationship between the electric field strength and the potential difference? E = d / v E = v / d d = E(v) E = v(d) I'm honestly clueless on this one
October 19, 2012 by I'm bad at physics

Physics
An electron with a velocity of v = (3 x + 4 y + 2 z) 106m/s enters a region where there is both a magnetic field and an electric field. The magnetic field is B = (1 x - 2 y + 4 z)T. If the electron experiences no force as it moves, calculate the electric field.
March 21, 2013 by Lindsey

Physics
An electron with a velocity of v = (3 x + 4 y + 2 z) 106m/s enters a region where there is both a magnetic field and an electric field. The magnetic field is B = (1 x - 2 y + 4 z)T. If the electron experiences no force as it moves, calculate the electric field.
March 21, 2013 by Lindsey

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?
February 1, 2010 by jake

physics
A particle has a charge of +2.2 μC and moves from point A to point B, a distance of 0.16 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A ...
January 30, 2013 by mageda

Physics; Elect.
1. A charge (uniform linear density=9.0 nC/m) is distributed along the x-axis from x=0 to x=3.0m. Determine the magnitude of the electric field at a point on the x axis with x=4.0m. a)81 N/C b)74 N/C c)61 N/C d)88 N/C e)20 N/C 2. A +2nC point charge is placed at one corner of ...
February 1, 2011 by Thomas

Physics Electric POtential
An electric charge q creates a field of 4500 N/C at a point d away from the charge. The potential at that point is +1800V. Determine q and d. Do you have to use the formula E=kQ/r^2 or something else? I'm lost on how to solve it
February 23, 2010 by Hailey

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...
January 28, 2009 by Anonymous

physics
A point charge of 2.4 μC is located at the center of a spherical shell of radius 17 cm, which has a charge −2.4 μC uniformly distributed on its surface. Given: ke = 8.98755 109 Nm2/C2 . a)Find the electric field for all points outside the spherical shell. b)...
September 19, 2011 by alex

physics help!
An electron enters the region of a uniform electric field between two oppositely charged parallel plates as shown, with an initial velocity of 3 x 106 m/s. The electric field between the plates is measured to be E = 200N/C. The horizontal length of the plates is 10cm. a. Find ...
May 12, 2011 by UnKnown

Physics
A charged disk of radius R that carries a surface charge density σ produces an electric field at a point a perpendicular distance z from the center of the disk, given by: Edisk = (sigma/2e0) x(1-(z/(square root(z^2 + R^2)) Consider a disk of radius 10 cm and positive ...
February 13, 2010 by Susie

physics
The electric field in a region is given by E=ayi + axj, where a= 2V/m^2 is a constant. What is the electric potential difference between the origin and the point x= 1m, y= 2m? Do I use the formula E= - deltaV= - (V/x)i+(V/y)j+(V/z)k)?
February 28, 2008 by Jessica

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.
September 24, 2011 by physics

Physics
There is a very large horizontal conducting plate in the x−y plane (consider it infinitely large). Its thickness is h. The charge densities on the upper and the lower surfaces are both equal to +σ. What is the magnitude of the electric field? Express your answer in ...
February 21, 2013 by Anonymous

phy
A very thin hollow conducting sphere has a radius of R=0.12 m. The center of the sphere is at S. A charge of q=710−6 C is present at point P which is located d=0.09 m from S. Assume that this charge stays at this position (thus it cannot move). We draw a line from S to ...
March 25, 2013 by Evans

Applied Physics
Which is a vector quantity? electric energy electric charge electric power electric field intensity
May 29, 2011 by Scott

physics
(a) How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 30.0 cm in diameter to produce an electric field of 1150 N/C just outside the surface of the sphere? (b) what is the electric field at a point 10.0 cm outside the ...
January 27, 2008 by J

Physics
There is a 85 uC point charge at the origin. What is the electric field at the point x= -45cm , y= 55cm. I am doing (-.45+.55)/(-.45^2+.55^2)^3/2 Where did I go wrong? I have to find the elctric point for the Ex and Ey.
August 12, 2009 by Sammy

physics
A circular surface with a radius of 0.053 m is exposed to a uniform external electric field of magnitude 1.48 104 N/C. The electric flux through the surface is 72 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 8, 2009 by amber

Physics
A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 6, 2013 by Sarah

Physics
A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 6, 2013 by Sarah

Physics
A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 6, 2013 by Sarah

Physics
A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 8, 2013 by Sarah

physics
The mass of an atom can be determined by ionizing it and accelerating it through a known electric field followed by a known magnetic field. The ions circular path is then measured. Calculate the mass of a chlorine anion of charge 3.20 10−19 C if it follows a circular ...
June 9, 2014 by grey

Physics
An electric dipole comprised of two charges Q and -Q are separated by a distance of 3.0 cm. Assume Q = 2.0x10^-6 C and -Q = -2.0x10^-6 C. Find the magnitude and direction of the electric field vector E and point P, which is 4.0 cm to the right of the center of -Q. Find the ...
March 13, 2012 by Michelle

physics - electric field
a point particle with charge q= 4/5 uC is placed on the x-axis at x=-10cm. A second particle of charge Q is now placed on the x-axis at x = 25cm, and its found that the electric field at the origin is zero. Find Q.
January 17, 2011 by J Velji

physics - electric field
a point particle with charge q= 4/5 uC is placed on the x-axis at x=-10cm. A second particle of charge Q is now placed on the x-axis at x = 25cm, and its found that the electric field at the origin is zero. Find Q.
January 17, 2011 by J Velji

Physics
Recall that for a finite rod of length L and total charge Q, the electric field for a point located a perpendicular distance r from the middle of the rod has a magnitude given by: Consider the limit of large distances, where a finite charged rod is observed at a distance that ...
February 11, 2010 by Julia

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 ...
April 28, 2009 by Lana

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 ...
September 23, 2008 by al

physics
What is the magnitude of an electrostatic force experienced by one elementary charge at a point in an electric field where the field intensity is 3.0 x 10^3 newtons per coulomb? a) 1.0 x 10^3 N b) 1.6 x 10^-19 N c) 3.0 x 10^3 N d) 4.8 x 10^-16 N
February 15, 2012 by Zen

physics
Two point charges of the same magnitude but opposite signs are fixed to either end of the base of an isosceles triangle. The electric field at the midpoint M between the charges has a magnitude EM. The field directly above the midpoint at point P has a magnitude EP. The ratio ...
February 14, 2013 by shaun

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 ...
September 23, 2008 by al

Physics
Two point charges of magnitudes -6.25 nano coulomb and -12.5 nano coulomb are separated by 25.0 cm There is a point A between the line joining the two charges at a distance 10.0 cm from the charge -12.5 nano coulomb.Find the magnitude of the net electric field these charges ...
September 7, 2009 by sandhu

physics
A flat horizontal surface with an area of 650 cm2 is inside a uniform electric field of 2.99104 N/C. The angle between the area vector and the electric field is 14.8. What is the electric flux through the surface?
January 30, 2011 by Ana

Please help with Physics
I dont understand these questions. Give two examples of common force fields? How is the magnitude of an electric field defined? -I got that it is its strength
November 5, 2007 by Stacey

Physics
A 5.0 C point charge is moved within an electric field and has an electric potential energy change of 10.0 J. What is the electric potential difference before and after the charge was moved? Show work. (C = 1.0 106 C)
May 19, 2012 by Pat

physics
A 30.0 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is 5.60 multiplied by 105 Nm2/C. What is the magnitude of the electric field? MN/C
September 8, 2013 by gita

physics
A 30.0 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is 5.60 multiplied by 105 Nm2/C. What is the magnitude of the electric field? MN/C
September 13, 2013 by suhani

Physics
A metal plate has a charge density of 85uc/cm^2 : Calculate the electric field strength at 14 cm above the plate
April 17, 2012 by Anna

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...
September 3, 2013 by Wayne

Physics
An electric dipole (any pair of oppositely charge point particles) lies on the x-axis, consisting of a - 2.5nC charge at x = -10 cm, and a +2.5nC charge at x=10cm. Find the electric field (a) on the x-axis, at the point (20,0) and (b) on the y-axis, at point (0,10).
April 4, 2013 by Jayflord

Physics
webassign(.)net/yf/22-30.gif The image above shows some of electric field lines due to 3 poin charges along the vertical axis. All 3 charges have the same magnitude. A. What are the signs of the 3 charges? Explain reasoning. B. At what points is the magnitude of the electric ...
February 2, 2013 by Justin

physics
A hollow metal ball carrying an electric charge produces no electric field at a point: is it inside the ball?
May 11, 2011 by ashley --- HELP PLEASEE!!!

Physics
A small object of mass 3.50 g and charge -22 C "floats" in a uniform electric field. What is the magnitude and direction of the electric field?
February 6, 2010 by Jan

Physics
A small object of mass 3.00 g and charge -13 C "floats" in a uniform electric field. What is the magnitude and direction of the electric field?
October 4, 2010 by Nate

Physics
A small object of mass 2.60 g and charge -17 C "floats" in a uniform electric field. What is the magnitude and direction of the electric field?
February 17, 2013 by Phil

11th grade
A thunderstorm has an electric field one night of 1.5 105 N/C. What is the magnitude of the electric force on an electron in such a field?
December 16, 2010 by jesse

Physics
What would happen when a dipole is placed in uniform electric field making an angle theta with the direction of electric field ?
June 8, 2013 by Aman

Physics
What would happen when a dipole is placed in uniform electric field making an angle theta with the direction of electric field ?
June 8, 2013 by Sneha

physics
an electric field of 15000 N/C is directed along the positive x-axis, what is the electric force on an electron in this field?
May 25, 2011 by Anonymous

physics
10. A 5 meter length of wire has a charge density of 3 x 10-3 C/m. What is the electric field strength E at an axial distance of 0.25 meters from the wire?
March 14, 2011 by ikemaze

physics
10. A 5 meter length of wire has a charge density of 3 x 10-3 C/m. What is the electric field strength E at an axial distance of 0.25 meters from the wire?
March 15, 2011 by ikemaze

Physics
3. A 5.0 C point charge is moved within an electric field and has an electric potential energy change of 10.0 J. What is the electric potential difference before and after the charge was moved?)
May 1, 2012 by Vita

Physics
An uncharged spherical conducting shell surrounds a charge -q at the center of the shell. The charges on the inner and outer surfaces of the shell are respectively... a] -q,-q b]+q, +q c]-q, +q d]+q,0 e]+q, -q 2) A postive point Charge is enclosed in a hollow metallic sphere ...
February 10, 2011 by John

physics
An electron is released from rest in a uniform electric field and accelerates to the north at a rate of 115 m/s2. What are the magnitude and direction of the electric field.
March 1, 2010 by electric field

12th grade.physics
three equal and similar charges each of 'q' units are placed at the corners of the square of side 'a' .find the electric field strength at the fourth corner?
April 10, 2010 by nikita

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?
March 4, 2012 by jazz

physics
1. What did Newton conclude about the force that pulls apples to the ground and the force that holds the moon in orbit? 2. What does the very small value of the gravitational constant G (in standard units) tell us about the strength of gravitational forces? 3. We can think of ...
July 13, 2010 by confused

college physics
The charge per unit length on a long, straight filament is -87.0 C/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b) Find...
October 6, 2013 by vishal

college physics
The charge per unit length on a long, straight filament is -87.0 C/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b) Find...
October 6, 2013 by vishal

college physics
The charge per unit length on a long, straight filament is -87.0 C/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b) Find...
October 6, 2013 by vishal

physics very hard
webassign(.)net/yf/22-30.gif The image above shows some of electric field lines due to 3 poin charges along the vertical axis. All 3 charges have the same magnitude. A. What are the signs of the 3 charges? Explain reasoning. B. At what points is the magnitude of the electric ...
February 4, 2013 by Julie

physics
The charge per unit length on a long, straight filament is -87.0 C/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b) Find...
September 8, 2013 by preya

physics
The charge per unit length on a long, straight filament is -87.0 C/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b) Find...
September 13, 2013 by priya

Physics
Millikan's oil drop experiment suspended a charged oil drop in an electric field. By measuring the size of the drop and using the oil's density, the weight of each drop could be calculated. This allowed the charge of each drop to be found, which was always found to be a ...
June 18, 2009 by Dave

Physics
Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A particle of charge -4.5 mC and mass 75. mg accelerates under the effects of the electric field caused by the disk, from a point at a perpendicular distance from the center of the disk. The final ...
February 14, 2010 by Sandra

PHYSICS
Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A particle of charge -4.5 mC and mass 75. mg accelerates under the effects of the electric field caused by the disk, from a point at a perpendicular distance from the center of the disk. The final ...
February 22, 2010 by Alex

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members