What prevents gravity from pulling you through the ground to the center of the Earth? Choose the best answer.
1.They repel each other.
2.They attract each other.
3.They may attract or repel each other, depending on whether the charge on the insulator is positive or negative.
4.They exert no electrostatic force on each other.
5.The charged insulator always spontaneously discharges.
[Ques. 2] Assuming the length remains the same, calculate the period of the same simple pendulum on the surface of the Moon? Note: The acceleration (g) due to gravity on the Moon is one-sixth of that on Earth.
[Ques. 3] What happens when a charged insulator is placed near an uncharged metallic object?
1.They repel each other.
2.They attract each other.
3.They may attract or repel each other, depending on whether the charge on the insulator is positive or negative.
4.They exert no electrostatic force on each other.
5.The charged insulator always spontaneously discharges.
[Ques. 4] Using Equation 3.1, calculate the period of your pendulum for a length of 160 cm or for the maximum length you used. How does this compare with your experimental value? Calculate the percent error. Use the calculated value of the period as the standard value.
[Ques. 5] Two point charges attract each other with an electric force of magnitude F. If one charge is reduced to one-third its original value and the distance between the charges is doubled, what is the resulting magnitude of the electric force between them?
1.1/12 F
2.1/3 F
3.1/6 F
4.3/4 F
5.3/2 F
[Ques. 6] A simple pendulum has a length L and a period T. If the length is increased to 4L, how will be the new period be affected? Refer to data tables for the answer.
[Ques. 7] What type of graph was obtained in Procedure 1, Step 6?
[Ques. 8] A charge of -4.00 nC is located at (0, 1.00) m. What is the x component of the electric field due to the charge at (4.00, -2.00) m?
1.1.15 N/C
2.-0.864 N/C
3.1.44 N/C
4.-1.15 N/C
5.0.864 N/C
[Ques. 9] Which variable (period or length) does the graph show to be increasing the fastest? (Note: If they were increasing at the same rate, the graph would be a straight line.)
[Ques. 10] What type of graph (straight line, parabola, hyperbola) was obtained in Procedure 1, Step 5?
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