Is it possible for an object to have nonzero acceleration but still have the magnitude of its velocity be zero?
[Ques. 2] What type of graph would be obtained when the centripetal force is plotted on the y axis and the velocity squared is plotted on the x axis?
[Ques. 3] A coaxial cable consists of a long, straight filament surrounded by a long, coaxial, cylindrical conducting shell. Assume charge Q is on the filament, zero net charge is on the shell, and the electric field is E1 at a particular point P midway between the filament and the inner surface of the shell. Next, you place the cable into a uniform external field E. What is the x component of the electric field at P then?
1. 0
2. between 0 and E1
3. E1
4. between 0 and -E1
5. - E1
[Ques. 4] What type of graph would be obtained when the centripetal force is plotted on the y axis and the velocity is plotted on the x axis?
[Ques. 5] Two solid spheres, both of radius 5 cm, carry identical total charges of 2 C. Sphere A is a good conductor. Sphere B is an insulator, and its charge is distributed uniformly throughout its volume. How do the magnitudes of the electric fields they separately create at radius 4 cm compare?
1. EA > EB = 0
2. EA > EB > 0
3. EA = EB > 0
4. 0 < EA < EB
5. 0 = EA < EB
[Ques. 6] Calculate the centripetal acceleration for each of the two trials.
[Ques. 7] Two solid spheres, both of radius 5 cm, carry identical total charges of 2 C. Sphere A is a good conductor. Sphere B is an insulator, and its charge is distributed uniformly throughout its volume. How do the magnitudes of the electric fields they separately create at a radial distance of 6 cm compare?
1. EA > EB = 0
2. EA > EB > 0
3. EA = EB > 0
4. 0 < EA < EB
5. 0 = EA < EB
[Ques. 8] Why must the string held in the student's hand be pulled at a uniform rate?
[Ques. 9] How did F c change when you redid the experiment using the larger mass? Did you expect this? Why or why not?
[Ques. 10] A cubical gaussian surface is bisected by a large sheet of charge, parallel to its top and bottom faces. No other charges are nearby. Through how many of the cubes faces is the electric flux zero?
1.0
2.2
3.4
4.6
Quick Reply
