Questions from College Physics

Q: Charge q1 = 1.00 nC is at x1 = 0

Charge q1 = 1.00 nC is at x1 = 0 and charge q2 = 3.00 nC is at x2 = 2.00 m. At what point between the two charges is the electric field equal to zero?

Q: A proton accelerates from rest in a uniform electric field of 640

A proton accelerates from rest in a uniform electric field of 640. N/C. At some later time, its speed is 1.20 x 106 m/s. (a) Find the magnitude of the acceleration of the proton. (b) How long does it...

Q: (a) Find the magnitude and direction of the electric field

(a) Find the magnitude and direction of the electric field at the position of the 2.00 μC charge in Figure P15.13. (b) How would the electric field at that point be affected if the charg...

Q: Four point charges are located at the corners of a square.

Four point charges are located at the corners of a square. Each charge has magnitude 3.20 nC and the square has sides of length 2.00 cm. Find the magnitude of the electric field at the center of the s...

Q: A helium nucleus of mass m = 6.64 x 10

A helium nucleus of mass m = 6.64 x 10-27 kg and charge q = 6.41 x 10-19 C is in a constant electric field of magnitude E = 2.00 x 10-3 N/C pointing in the positive x - direction. Neglecting other for...

Q: A charged dust particle at rest in a vacuum is held motionless

A charged dust particle at rest in a vacuum is held motionless by an upward - directed 475-N/C electric field. If the dust particle has a mass of 7.50 x 10-10 kg, find (a) The charge on the dust parti...

Q: A particle of mass 1.00 x 10-9 kg

A particle of mass 1.00 x 10-9 kg and charge 3.00 pC is moving in a vacuum chamber where the electric field has magnitude 2.00 x 103 N/C and is directed straight upward. Neglecting other forces except...

Q: Two equal positive charges are at opposite corners of a trapezoid as

Two equal positive charges are at opposite corners of a trapezoid as in Figure P15.29. Find symbolic expressions for the components of the electric field at the point P. Figure P15.29:

Q: An aluminum rod and an iron rod are joined end to end

An aluminum rod and an iron rod are joined end to end in good thermal contact. The two rods have equal lengths and radii. The free end of the aluminum rod is maintained at a temperature of 100.°C, and...

Q: Rocket observations show that dust particles in Earth’s upper atmosphere are often

Rocket observations show that dust particles in Earth’s upper atmosphere are often electrically charged. (a) Find the distance separating two dust particles if each has a charge of +e and the Coulomb...