Just need help with what happens in each step that requires observations and why
ID: 1394141 • Letter: J
Question
Just need help with what happens in each step that requires observations and why it occurs (11, 13, 14, 16, 17, 20).
1. Tear one small piece of masking tape from the roll (approximately 5 cm).
2. Create a small, closed loop with the tape, leaving the sticky side on the outside of the loop.
3. Secure the looped tape to one of a side of the wooden block adjacent to the side with the slit.
4. Press the taped side of the wooden block onto a smooth wall (or the flat side of a counter or table top) with the slit pointing perpendicular to the wall and parallel to the floor.
5. Unwrap the outer layer of a paperclip.
6. Use the exposed end of the paperclip to poke a hole through the centers of two pith balls.
7. Thread one end of the monofilament line through one of the pith balls. Tie a knot on the end that you threaded through to keep the pith ball on the thread.
Note: If the paperclip created a larger hole, three to five knots may need to be tied to secure the ball on the thread.
8. Repeat Step 7 on the other end of the monofilament line with the other pith ball.
9.Once the pith balls are secured on each end of the line, place the line in the slit of the wooden block. The pith balls should rest at the same height.
10. Remove any charge from the acetate strip (wide and clear) by grabbing it with your hand or rubbing it on a metal object like a door knob. This is called grounding.
11. Test for interactions between the acetate strip and both pith balls. Record observations of any interaction. -
12. Charge the acetate strip by rubbing it with the cotton cloth.
13. Slowly bring the plastic strip close enough to the right pith ball so that it moves, but does not touch the plastic strip. Once movement of the pith ball is observed move the plastic strip away. Record your observations (e.g., how far away were the two objects, how fast did the pith ball move, in what direction did the pith ball move, etc.).
Explanation / Answer
11) This interaction will be due to the electrostatic induction
13) The ball was attracted due to the opposite polarity induced.
14) Once movement is started take the plastic strip away , before touching because once it got touched the charge will be retransferred.
16) Again electrostatic induction will be the interaction
17) once the ball become closer to each other and contacted to each other the charge retrnsfer will be occured.
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