Today we collected position and potential data in order to find the strengths of electric fields produced by parallel metal bars hooked up to our power supplies.
Assignment:
We introduced electric potential yesterday and continued to develop the idea of potential today. We will use potential to help us find the strength of electric fields produced by parallel metal bars on Monday.
Assignment:
We learned two important things today. First, we learned how to calculate the force exerted by an electric field on a charged object. We need only know how strong the electric field is and how much charge the object possesses. This is much like what we did last year to find the force exerted by a gravitational field on an object with mass (which is just "gravitational charge."
Assignment:
Many of us were involved in the Senior play today, and so the rest of us reviewed what we have been studying in class.
We found yesterday that like charges repelled each other and opposite charges attracted each other. Today we worked out some implications of that by charging an electroscope by contact and by induction electroscope.
Static Electricity was introduced today. We need an electric field to account for the forces on charged objects that we saw in class today. Following Benjamin Franklin, we defined a balloon rubbed with wool to be negatively charged. We found that plexiglass rubbed with a plastic grocery store bag became positively charged.
Then we proceeded to investigate the charge on sticky tape that we arranged in different ways today. Assignment:
The first 3:14 of this video do a great job explaining how an air conditioner works. You may refer to it as you prepare your answer for our Celebration of Knowledge on Friday.
Today we worked on efficiency and entropy problems:
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Physics II
Mr. Swackhamer Scottsdale Preparatory Academy Archives
March 2020
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