subject
Physics, 18.03.2021 02:10 Alex9089435028

This project will allow you to “see” the difference between AC and DC. You will need the following:
• Metal plate or pan
• Paper clip
• Piece of cloth
• Cornstarch
• Potassium iodide (available at a pharmacy)
• 9 volt battery
• 3 insulated wires with the insulation stripped off the ends
• Low voltage bell transformer (available at electronics or hardware stores)
Follow these steps:
1. Soak the piece of cloth well in a thick solution of cornstarch and water mixed with the
potassium iodide.
2. Lay the metal plate or pan with the bottom up. Wring the cloth out and lay it across the
metal plate or pan.
3. Use a wire to connect the negative terminal to one edge of the pan, using an alligator clip
or paper clip.
4. Connect the other wire to the positive end, and then slowly stroke the exposed end across
the cloth. (The electric current frees the iodine from the potassium iodide, making a dark
blue mark.) What pattern do you see? What kind of current are you using? Write your
answers.

ansver
Answers: 2

Other questions on the subject: Physics

image
Physics, 21.06.2019 19:40, BigDough9090
Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.
Answers: 2
image
Physics, 22.06.2019 00:30, chayaharroch03
Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)
Answers: 1
image
Physics, 22.06.2019 04:20, pippalotta
Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.
Answers: 3
image
Physics, 22.06.2019 08:00, chuchi24
What is the rate of change in a objects position?
Answers: 1
You know the right answer?
This project will allow you to “see” the difference between AC and DC. You will need the following:...

Questions in other subjects:

Konu
Chemistry, 04.02.2021 21:00
Konu
Mathematics, 04.02.2021 21:00
Konu
Mathematics, 04.02.2021 21:00