Physics Videos

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  1. A tube is open on one end and closed on the other. Draw the largest and second largest standing waves.

  2. A tube is open on one end and closed on the other. Find the largest and second largest wavelengths.

  3. Two point charges, q\(_1\) = 6Q and q\(_2\) = -2Q, are separated by a distance, d. The attractive force between these two particles is 20 N. If the distanced is halved, so d\(_2\) = d/2, what is the new force between the particles?

  4. Two metal spheres are charged, q\(_1\) = 6Q and q\(_2\) = -2Q, and are separated by a distance d. The attractive force between these two spheres is 20 N. The metal spheres are then brought together so they are touching, and then separated again a distance d. What is the new charge on the metal spheres and what is the new force between them?

  5. Two objects, whose charges are +3 nC and -2 nC, are separated by 1.0 mm. Find the magnitude of the attractive force that either charge exerts on the other.

  6. In the figure below, L = 1.0 mm, q\(_1\) = +3 nC, q\(_2\) = -2 nC, and q\(_3\) is +4 nC. Find the magnitude and direction of the net electrostatic force on q\(_3\)

    coulomb's law physics practice problem example

  7. In the figure below, A = 3 cm, B = 1 cm, q\(_1\) = +15 nC, q\(_2\) = -5 nC, and q\(_3\) is -10 nC. Find the magnitude and direction of the net electrostatic force on q\(_3\)

    coulomb's law physics practice problem example

  8. What is the direction of the electric field at the center of the square?

    electric field practice problem

  9. A 100 g ball carries a charge of +0.1 C and is placed in an uniform electric field, E = 10 N/C. Find the acceleration of the ball.

  10. An uncharged metal sphere is place in a uniform electric field as shown below. Which way will the sphere be pushed? Explain.

    MCAT physics electric practice problem

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