1. Physics

    The figure shows portions of two large, parallel, non-conducting sheets, each with a fixed uniform charge on one side. The magnitudes of the surface charge densities are σ(+) = 4 μC/m2 for the positively charged sheet and σ(-) = 10 μC/m2 for the

    asked by Lyra on February 17, 2014
  2. physics E&M

    I posted a question on here earlier but I wasn't able to solve from what the person had told me. An infinite line charge of uniform linear charge density lambda = -2.5 micro Coulombs lies parallel to the y axis at x = 0 m. A point charge of 3.5 micro

    asked by aaron b. (again sorry) on January 27, 2012
  3. Physic please check

    A +6.00 µC charge is moving with a speed of 7.00 x 10^4 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the charge and carries a current of 63.0 A in a direction opposite to that of the moving charge. Find the magnitude and direction

    asked by Mary on November 5, 2007
  4. Physics

    Which of the following statements for magnetism are true? (Give ALL correct answers) A) B does work on a charge only when the charge has a velocity component perpendicular to B. B) B acts only on charges at rest. C) B does work on a charge only when the

    asked by Richie on October 6, 2007
  5. Physics

    A charge +Q and -2Q were placed on first and third of three very large parallel plates. The middle plate is earthed. Find the chargeon right extreem plate

    asked by Arjun on July 15, 2011
  6. Physics

    Lighting strike: Storm clouds build up large negative charges that dwell in a charge center. Suppose a storm cloud has -25 C in a charge center located 10 km above the ground. The negative charge center attracts an equal amount of positive charge that is

    asked by Cassie on March 22, 2013
  7. Physics

    An infinitely long line charge of uniform linear charge density λ = -3.00 µC/m lies parallel to the y axis at x = -2.00 m. A point charge of 4.70 µC is located at x = 1.50 m, y = 2.50 m. Find the electric field at x = 2.50 m, y = 2.00 m. I get 23.7

    asked by Paul on October 9, 2011
  8. physics

    How does one Coulomb of charge compare to the charge on an electron? How do you think such a large difference arose historically? i got that the have the same mass and charge. i didn't understand the second part

    asked by Will on October 16, 2007
  9. Physics

    A 5.30-ìC charge is moving with a speed of 9.30 x 104 m/s parallel to a very long, straight wire. The wire is 6.60 cm from the charge and carries a current of 87.0 A. Find the magnitude of the force on the charge.

    asked by Kristi on October 29, 2011
  10. Physics

    A 5.30-ìC charge is moving with a speed of 9.30 x 104 m/s parallel to a very long, straight wire. The wire is 6.60 cm from the charge and carries a current of 87.0 A. Find the magnitude of the force on the charge.

    asked by Kristi on October 29, 2011
  11. physics

    Imagine a parallel universe in which the electric force has the same properties as in our universe but there is no gravity. In this parallel universe, the sun carries charge Q, the earth carries charge −Q, and the electric attraction between them keeps

    asked by jack on January 31, 2016
  12. physics

    An infinite sheet with a surface charge density of -2.1 micro-coulombs/m2 runs parallel to the x axis. Another infinite sheet a surface charge density of +2.1 micro-coulombs/m2 runs parallel to the y axis. A charge of -4.1 micro-coulombs moves at a 45

    asked by Mandaleigh on February 10, 2012
  13. Physics (PLEASE HELP)

    A -6.00 µC charge is moving with a speed of 6.60 104 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the charge and carries a current of 73.0 A in a direction opposite to that of the moving charge. Find the magnitude and direction of

    asked by DCM on February 7, 2012
  14. Physics

    A -6.00 µC charge is moving with a speed of 6.60 104 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the charge and carries a current of 73.0 A in a direction opposite to that of the moving charge. Find the magnitude and direction of

    asked by DCM on February 6, 2012
  15. physics

    A large conducting plate of area equal to 4.0 m^2 has an evenly distributed surface charge of + 3.4 micro coulomb on its surface.A point charge of mass equal to 5.3 x 10^-6 kg and carrying a charge of 1.2 nC is held at 10 cm above the center of the

    asked by sandhu on September 19, 2009
  16. physics

    A large conducting plate of area equal to 4.0 m^2 has an evenly distributed surface charge of + 3.4 micro coulomb on its surface.A point charge of mass equal to 5.3 x 10^-6 kg and carrying a charge of 1.2 nC is held at 10 cm above the center of the

    asked by sandhu on September 19, 2009
  17. physic

    A +4 µC point charge is in the x-y plane at the point (3.0 m, 0.0m) while a +10 µC point charge is at the point (0.0 m, 1.0 m). (a) Express the Coulomb force on the +10 µC point charge due to the +4 µC charge in vector notation. (b) What is the

    asked by Asude on January 31, 2014
  18. physics

    Located 10 centimeters apart from each other are two charged particles. Both have equal mass. The second object has a charge that is twice as large as the charge on the first object. They experience a repulsive force of 95N due to the electrical

    asked by Anonymous on February 26, 2017
  19. Physics

    Charge A has a charge of +2 C. Charge B has a charge of - 3 C and is located 1 meter to the right of A. Charge C is located 1 m to the right of charge Band has a charge of -1C. If a fourth charge (Charge D) is placed 4 m to the right of Charge B, How much

    asked by Jeff on August 23, 2014
  20. Physics

    The electric field between two equally but oppositely charged parallel plates is 2.35 N/C [south]. If a charge of –2.00 C was placed at the midway point between the plates, what force (magnitude and direction) would act on the charge? Give the direction

    asked by Humera on November 21, 2016
  21. physics

    An infinite sheet with a negative surface charge density runs parallel to the x axis. Another infinite sheet with an equal but opposite sign surface charge runs parallel to the y axis. The difference in electric potential from the point x = +5.2 m, y =

    asked by Mandaleigh on February 10, 2012
  22. Physics

    How does one Coulomb of charge compare to the charge on an electron? How do you think such a large difference arose historically?

    asked by Richard on June 25, 2010
  23. Physics

    How does one Coulomb of charge compare to the charge on an electron? How do you think such a large difference arose historically?

    asked by Adam on October 21, 2007
  24. Physics (electricity and Magnetism)

    A long straight and thin wire has a charge Q per unit length. It is also carrying a current I. A point charge is moving with a velocity v parallel to the conductor, at a distance d from it. Find the velocity v, supposing a correct direction for the current

    asked by John on June 1, 2014
  25. Physics

    Consider the limit of large distances, where a finite charged rod is observed at a distance that is very large when compared to the length of the rod. In this situation, the electric field best resembled that of a ... point charge ... it goes like r^-2

    asked by Sandra on February 14, 2010
  26. Phsyics

    The electric field is constant in magnitude and direction for the following arrangement of fixed charges: -Close to a point charge -Close to a dipole -Far from a dipole, i.e., at a distance greater than 10 times the charge seperation distance d of the

    asked by Sandra on February 5, 2010
  27. Physics

    Two fixed, non-conductive, isolated rings of radii 25 cm are electrified and brought close to each other so that they are parallel. The distance between them is 1 m. You know that one of them has a charge of 1 nC(Nano Coulomb) evenly distributed on it, but

    asked by Physics Lover on June 13, 2013
  28. Physics

    A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

    asked by hans on May 15, 2013
  29. Physics

    A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

    asked by Nilesh P. on May 14, 2013
  30. Pyhsic...Elena,please help....

    A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

    asked by pyhsicamateur on May 15, 2013
  31. physics

    a.What electric potential difference exists across a 5.2 µF capacitor that has a charge of 2.1 10-3 C? how do i use uF and C into a formula to find answer?? b.An oil drop is negatively charged and weighs 8.5 10-15 N. The drop is suspended in an electric

    asked by kailey on February 5, 2008
  32. Physics

    Two charges are placed between the plates of a parallel plate capacitor. One charge is +q1 and the other is q2= +5.00x10^-6 C . The charge per unit area on each plate has a magnitude of sigma=1.30 x 10^-4 C/m^2. The force on q1 due to q2 equals the force

    asked by Trevor on February 6, 2008
  33. Physics

    Two charges are placed between the plates of a parallel plate capacitor. One charge is +q1 and the other is q2= +5.00x10^-6 C . The charge per unit area on each plate has a magnitude of sigma=1.30 x 10^-4 C/m^2. The force on q1 due to q2 equals the force

    asked by Trevor on February 6, 2008
  34. physics

    A 8.95 μC point charge is glued down on a horizontal frictionless table on the right. If is tied to a -6.35 μC point charge by a light nonconducting wire with length 2.5 cm on the left. The charges are placed in a external, uniform electric field with

    asked by Anonymous on February 3, 2014
  35. physics

    I have these problems that I keep doing and keep missing. If someone could please help me with what I am doing wrong! Two charges, -25 µC and +15 µC, are fixed in place and separated by 3.4 m. (a) At what spot along a line through the charges is the net

    asked by jennifer on February 2, 2010
  36. English 101

    Which sentence is parallel and which is not parallel. 1. Einstein liked doing mathemathical research more than to supervise a large laboratory. 2.While wrapping the gifts, I noticed that murray, my pet terrier, kept trying to untie the bow.

    asked by Felicia on January 28, 2010
  37. physics

    Two large circular metal plates are parallel and nearly touching, only 4.1 mm apart. The two plates are connected to the opposite terminals of a 9 V battery. (a) What is the average electric field strength in the space between the plates? V/m (b) What is

    asked by dede on November 9, 2010
  38. Science

    Use the following values for mass and charge: an electron has mass me = 9.11×10-31 kg and charge -e, a proton has mass mp = 1.67×10-27 kg and charge +e, an alpha particle has mass malpha = 6.65×10-27 kg and charge +2e, where e = 1.60×10-19 C. An

    asked by R on February 6, 2013
  39. Science

    Use the following values for mass and charge: an electron has mass me = 9.11×10-31 kg and charge -e, a proton has mass mp = 1.67×10-27 kg and charge +e, an alpha particle has mass malpha = 6.65×10-27 kg and charge +2e, where e = 1.60×10-19 C. An

    asked by R on February 6, 2013
  40. Science

    A strong electric field is? a.directed toward a charge*** b.directed away from a charge. c.caused by a large quantity of charge. d.caused by a small quantity of charge.

    asked by ItsGottaGetEasier on May 25, 2018
  41. Phys1

    A 2μF capacitor is charged to 50V and then connected in parallel with a 4μF capacitor charged to 100 V.? Determine (a) the charge and potential difference of the system, (b) the charge on each capacitor of the system, (c) the energy stored in the system,

    asked by good eve on April 24, 2016
  42. PHYSICS

    A mobile postive point charge is located between two parallel charged plates of charge densitys +o (top plate) and -o (bottom plate) at a distance d from the negative plate.the distance doubles (becomes 2d)between the negative (bottom) plate and the mobile

    asked by Michael on February 24, 2010
  43. Physics

    A mobile postive point charge is located between two parallel charged plates of charge densitys +o (top plate) and -o (bottom plate) at a distance d from the negative plate.the distance doubles (becomes 2d)between the negative (bottom) plate and the mobile

    asked by Michael on February 23, 2010
  44. Physics

    An infinitely long line charge of uniform linear charge density λ = -3.00 µC/m lies parallel to the y axis at x = -2.00 m. A point charge of 4.70 µC is located at x = 1.50 m, y = 2.50 m. Find the electric field at x = 2.50 m, y = 2.00 m. I added the

    asked by Tom on October 10, 2011
  45. Physics Please Help

    A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

    asked by Mathslover on May 18, 2013
  46. physics

    please check: A battery converts what type of energy into electrical energy? a. mechanical b. nuclear c. solar d. chemical D When a parallel-plate capacitor is connected to a battery:a____ is stored on one plate, and a ___ is stored on the other a.

    asked by physics on March 14, 2009
  47. Physics

    A q = +3.00 mC test charge is placed inside a constant uniform electric field created in a parallel plate capacitor connected to a battery of unknown voltage.   The capacitor is made of two parallel plates each with area equal to 0.250 m2 separated by a

    asked by ALex on June 20, 2013
  48. computers - Programming

    Create a program that uses two parallel one-dimensional arrays. The program displays a shipping charge that is based on the number of items ordered by a customer. The shipping charge scale is shown in Figure 1 below. Store the maximum order amounts in a

    asked by apiz007 on May 5, 2014
  49. physics

    Which of the following is correct for the charge in a magnetic field? Choose one answer. a. A stationery charge can experience a force in a magnetic field. b. A moving charge parallel to the direction of the magnetic field can experience a force. c. A

    asked by ashley --- HELP PLEASEE!!! on June 4, 2011
  50. Physics

    A very long uniform line of charge has charge per unit length 3.70 µC/m and lies along the x-axis. A second long uniform line of charge has charge -2.20 µC/m per unit length and is parallel to the x-axis at y = 0.400 m. What is the net electric field

    asked by Anon on January 19, 2017
  51. Physics

    Two capacitors are connected in parallel as shown above. A voltage V is applied to the pair. What is the ratio of charge stored on C1 to the charge stored on C2, when C1 = 1.5C2 ? how do you do this? ( The answer is 3/2) Thanks for helping ; ) I appreciate

    asked by Amanda C. on February 4, 2011
  52. Physics

    If a parallel-plate capacitor in a RC circuit has a 10 C charge on each plate when it is disconnected from the battery, and in 10 sec drops to 10% of its initial charge, what is its capacitance? (Assuming R = 10 ohms) Not sure which formula to use/

    asked by Patch on July 11, 2015
  53. English 101

    Sports fans may disagree about whether going to baseball games or to watch football is more fun, but few people can ignore the importance of sports in America. A This sentence is parallel. B This sentence is not parallel. Some sports fans argue endlessly

    asked by Deedward on June 30, 2010
  54. physics

    (1)A parallel-plate capacitor carrying charge q0 is modified by the insertion of a dielectric with κ = 4.3 between the plates. As a consequence, the energy stored in the capacitor quadruples. What will the charge be after the dielectric is inserted? (2)A

    asked by Sandhya on February 21, 2010
  55. Physic II

    Consider the attraction and repulsion of different types of charge. a) Explain why you expect to find that the amount of charge a battery can pump onto a parallel plate capacitor will double if the area of each plate doubles.

    asked by Guline on March 13, 2014
  56. physics-E&M

    An infinite line charge of uniform linear charge density lambda = -2.5 micro Coulombs lies parallel to the y axis at x = 0 m. A point charge of 3.5 micro Coulombs is located at x = 2.5 m, y = 3.5 m. Find the x- and y-components of the electric field at x =

    asked by aaron b. on January 27, 2012
  57. Precalculus

    You have a total of 820 feet of fencing to enclose a large retangular larea and divide it into four smaller pens of the same dimensions. The fencing used to divide the large pen must be parallel to the same side of the large rectangle. Maximize the total

    asked by Jackie on June 19, 2012
  58. physics

    A large, flat, horizontal sheet of charge has a charge per unit area of 2.05 µC/m2. Find the electric field just above the middle of the sheet.

    asked by preya on September 8, 2013
  59. PHYSICS

    A large, flat, horizontal sheet of charge has a charge per unit area of 2.05 µC/m2. Find the electric field just above the middle of the sheet.

    asked by smita on October 6, 2013
  60. physics

    A large, flat, horizontal sheet of charge has a charge per unit area of 2.05 µC/m2. Find the electric field just above the middle of the sheet. kN/C

    asked by priya on September 13, 2013
  61. Physics

    By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 2.75 m/s and v2 = 1.65 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor.

    asked by Elizabeth on October 22, 2012
  62. physics

    By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 3.05 m/s and v2 = 1.95 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor.

    asked by Tara on February 25, 2016
  63. physics

    By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 3.15 m/s and v2 = 1.50 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor.

    asked by Natasha on March 13, 2012
  64. Physics

    ssm By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 2.95 m/s and v2 = 1.70 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the

    asked by Will on April 1, 2008
  65. Physics

    Charge A has a charge of +2C. Charge B has a charge of -3C and is located 1 meter to the right of A. Charge C is located 1 meter to the right of Charge B and has a charge of -1C. If a fourth charge (Charge D) is placed 4 meters to the right of Charge B,

    asked by J on August 8, 2013
  66. physics

    charge A has a charge of 2C, Charge B has a charge of -3C and is located 1 meter to the right of A. Charge C is located 1 meter to the right of charge B and has a charge of -1C. if a fourth charge (charge D) is placed 4 meters to the right of charge B, how

    asked by chris on February 11, 2013
  67. physics

    Charge A has a charge of +2C. Charge B has a charge of -3C and is located 1 meter to the right of A. Charge C is located 1 meter to the right of Charge B and has a charge of -1C. If a fourth charge (Charge D) is placed 4 meters to the right of Charge B,

    asked by Jason on August 8, 2013
  68. Physics

    A parallel plate capacitor has a rectangular plates with length 5cm and width 3cm. They are separated by a distance 12m and hooked up to a 20V battery A.) what is the area of each plate in m^2 B.) assuming nothing else is present on the circuit what is the

    asked by Macy on February 25, 2015
  69. Physics

    A parallel-plate capacitor is constructed of two horizontal 15.2-cm-diameter circular plates. A 1.9 g plastic bead, with a charge of -5.6 nC is suspended between the two plates by the force of the electric field between them. What is the charge on the

    asked by Sunny on September 10, 2017
  70. 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

    asked by AE on January 25, 2010
  71. URGENT: Please help with Physics

    Suppose the mass of each of two spherical objects is doubled, and the distance between their centers is three times as large. How is the magnitude of the force of gravity between them affected? (Points : 5) It is 4/9 as large. It is 4/3 as large. It is 2/9

    asked by Jill on January 15, 2014
  72. chemistry

    5Fe(2+ charge) + MnO4(-1 charge) +8H(1+ charge) -> 5Fe(3+ charge) + Mn(2+ charge) + 4H2O In a titration experiment based on the equation above, 25ml of an Acidified Fe(2+ charge) solution requires 14 ml of standard .050 M MnO4(1- charge) solution to reach

    asked by corey on October 3, 2007
  73. Physics

    By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 2.95 m/s and v2 = 1.70 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor.

    asked by Will G on April 2, 2008
  74. Physics

    a small sphere whose m mass is 1.0 mg carries a charge q of 2.0*10^(-8)C. It hangs from a silk thread that makes an angle of 30 degrees with a large charged nonconducting sheet as in figure. Calculate the uniform charge density σ for the sheet

    asked by Jc on February 22, 2012
  75. science

    A charge of +9.0 nC and a charge of +4.0 nC are separated by 50.0 cm. Find the equilibrium position for a −1.0 nC charge as a distance from the first charge. The Coulomb charge is 8.98755 × 109 N · m2 /C 2 . Answer in units of cm.

    asked by Julia on March 13, 2015
  76. PHYSICS

    By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor. After the collision, the component of

    asked by Anonymous on April 26, 2015
  77. PHYSICS

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by HELP in physics!!! on October 20, 2013
  78. Help!!

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by physics on October 17, 2013
  79. PHYSICS

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by rabio on October 18, 2013
  80. PHYSICS

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by rabio on October 19, 2013
  81. PHYSICS

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by smita on October 23, 2013
  82. physics

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by bad at physics on October 15, 2013
  83. PHYSICS

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by Help!! on October 13, 2013
  84. Physics

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by capacitance q on October 15, 2013
  85. PHYSICS

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by HELP!!! on October 14, 2013
  86. PHYSICS

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. (a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates. kV/m (b) What is

    asked by smita on October 21, 2013
  87. CHEMISTRY

    Write formulas for the compounds that form from In and each of the following polyatomic ion: NO−3, SO2−4, PO3−4. (Assume In charge is 3+.) In(+3 charge) NO3(-1 CHARGE) SO4(-2 charge) P4(-3 charge) Re posting this a little differently. hopefully

    asked by MELISSA on June 24, 2016
  88. Physics

    The membrane that surrounds a certain type of living cell has a surface area of 2.13 x 10-9 m2 and a thickness of 1.94 x 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 6.4. (a) If the potential on

    asked by Sami on February 9, 2012
  89. physics

    The membrane that surrounds a certain type of living cell has a surface area of 4.4 x 10-9 m2 and a thickness of 1.6 x 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 4.1. (a) The potential on the

    asked by help on January 18, 2013
  90. physics

    The membrane that surrounds a certain type of living cell has a surface area of 4.9 x 10-9 m2 and a thickness of 1.2 x 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 5.5. (a) The potential on the

    asked by Shannon on February 18, 2013
  91. Math

    A local pizza shop sells large pies for $7 each. If the cost of the order is proportional to the number of pizzas would they charge a delivery charge per pizza or per order ?

    asked by Marylou :) on December 19, 2012
  92. physics

    1) Two large vertical plates parallel to each other are 2mm apart. A thin flat plate of 1 mm thickness,0.6 m*0.6 m size and 25 N weight is towed vertically up b/w the two large plates with a velocity of 0.2 m/s. the inside plate is equidistant from the two

    asked by sumit on September 2, 2011
  93. Physics

    A capacitor consists of a set of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery that maintains a constant potential difference between the plates and has charge Q1. If the separation between the plates is

    asked by Sam on February 9, 2011
  94. physics

    A small sphere with a mass of 2.00×10−3 g and carrying a charge of 5.20×10−8 C hangs from a thread near a very large, charged insulating sheet, as shown in the figure . The charge density on the sheet is −2.40×10−9 C/m^2. Find the angle of the

    asked by canan on February 25, 2012
  95. Math

    In the figure KE is parallel to LF which is parallel to MG which is parallel to NH etc Also DK:KL= 2:1 DL:LM= 2:1 DM:MN= 2:1 etc If KE= 2cm,calculate the length of the 10th parallel line,rounded off to one decimal. (N.B NH is the 4th parallel line)

    asked by Sashen on April 25, 2016
  96. math

    **In the Figure KE is parallel to LF which is parallel to MG which is parallel to NH etc. Also DK: KL= 2:1 DL:LM = 2:1 DM: MN=2:1 etc If KE = 2 cm , calculate the length of the 10th parallel line,rounded off to one decimal place.(N.B NH is the 4th parallel

    asked by Jo on April 25, 2016
  97. physics

    A parallel-plate capacitor is formed from two 1.0{\rm cm} \times 1.0{\rm cm} electrodes spaced 2.8{\rm mm} apart. The electric field strength inside the capacitor is 1.0\times10^{6}{N/C}} part a What is the charge (in {\rm nC}) on positive electrode? part

    asked by holly on June 19, 2013
  98. physics

    While you are in detention after school, your teacher tells you to slide a large, 89.7 kilogram box across the floor. The coefficient of static friction (ìstatic) between the box and the floor is 0.50. Compute the force parallel to the ground (F

    asked by Drew on January 12, 2015
  99. Physics

    Two parallel plate capacitor of capacitant, two microfarad &three microfarad are connec ted in parallel and d combination is 50V direct current. Draw d circuit diagram of arrangement and determine d following (i)charge on either plate of each capacity.

    asked by Ollyjay on March 6, 2013
  100. physics(check my answers)

    a large thin conducting plate has a net charge q. the charge density on each side of conducting plate is : q/2A electric field on each side is :q/2epsilon=q/4Aepsilon Does the charge on the right surface contribute to the electric field to the left of the

    asked by blasting on September 1, 2010