jrfannin

Most popular questions and responses by jrfannin
  1. physics

    Two point charges are placed on the x axis. (Figure 1) The first charge, q1 = 8.00nC , is placed a distance 16.0m from the origin along the positive x axis; the second charge, q2 = 6.00nC , is placed a distance 9.00m from the origin along the negative x

    asked on February 4, 2014
  2. physics

    Two point charges, -20μC and +40μC , are separated by a distance of 17.0cm . What is the magnitude of the electric field at a point halfway between the two charges? Express your answer to two significant figures and include the appropriate units

    asked on February 4, 2014
  3. physics

    have homework due soon, need help thanks. Two point charges are placed on the x axis.(Figure 1) The first charge, q1 = 8.00nC , is placed a distance 16.0m from the origin along the positive x axis; the second charge, q2 = 6.00nC , is placed a distance

    asked on February 4, 2014
  4. algebra based physics

    Electric bees. As they fly through the air, honeybees can pick up a small amount of electric charge. Suppose a 0.12-g bee acquires a charge of –65pC. How many excess electrons has the bee acquired? Find the magnitude of the electric force on the bee in

    asked on February 10, 2014
  5. physics

    A 23.6μC point charge lies at the origin. Find the electric field at the point (0.55m , 0). What is the magnitude of the electric field? Express your answers using two significant figures. Enter the x and y components of the field separated by a comma.

    asked on February 4, 2014
  6. physics

    If the field strength is E = 9 V/m a distance of 1 m from the charge, what is the field strength E a distance of 3 m from the charge?

    asked on February 4, 2014
  7. physics

    if a charged plane has a uniform surface charge density of −1.5×10−7C/m2 , what is the magnitude of the electric field just outside the plane’s surface? Express your answer to two significant figures and include the appropriate units.

    asked on February 4, 2014
  8. physics

    An electric dipole lies on the x-axis, consisting of a -2.3nC charge at x = -11cm and a +2.3nC charge at x = 11cm . Part A Compute the electric field at the point (–16cm , 0). Find the magnitude of the electric field. Express your answer to two

    asked on February 4, 2014
  9. algebra based physics

    Two protons in a nucleus are separated by 8.0×10−15m . What's the potential energy of the pair?

    asked on February 10, 2014
  10. algebra based physics

    An electron in an oscilloscope tube is traveling horizontally with a speed of 4.4×106m/s . It passes through a 2.1cm long region with an electric field pointing upward with a magnitude of 1500N/C. what is the magnitude of the electron’s velocity when it

    asked on February 10, 2014
  11. physics

    A pair of parallel plates are charged with uniform charge densities of –32pC/m2 and +32pC/m2 . The distance between the plates is 2.5mm . If a free electron is released at rest from the negative plate, find its speed when it reaches the positive plate.

    asked on February 10, 2014
  12. 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.

    asked on February 10, 2014
  13. 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.

    asked on February 10, 2014
  14. physics

    What must the charge (sign and magnitude) of a particle of mass 1.47g be for it to remain stationary when placed in a downward-directed electric field of magnitude 690N/C ? Use 9.81m/s2 for the magnitude of the acceleration due to gravity. PART B What is

    asked on February 4, 2014
  15. algebra based physics

    Two identical 20g particles each carry 4.0μC of charge. One is held fixed, and the other is placed 1.0 mm away and released. Find the speed of the moving charge when it's 1.0 cm from the fixed charge. Find the speed of the moving charge when it's 1.0 km

    asked on February 10, 2014
  16. algebra based physics

    Three point charges of 2.0 μ C, 4.0 μ C, and 6.0 μ C form an equilateral triangle with each side 2.0cm. Find the electric potential energy of this distribution.

    asked on February 10, 2014
  17. physics

    A large plane having uniform charge density has an electric field just outside the plane that points directly toward the plane with magnitude 1.25×104N/C . What is the surface charge density? Express your answer with the appropriate units.

    asked on February 4, 2014