with mr mackenzie
Here are the exam-style questions to cover the electricity and energy unit. I have included a copy of the relationships (equation) sheet and some data tables that you may need to attempt all the questions. Apologies for the larger file size, it’s due to all the circuit diagrams.
Use the link below to download your own copy.
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We finished the transport section with a look at Work, Potential & Kinetic energy. Those of you aiming for Credit need to carry out calculations involving kinetic energy using
E_k = \displaystyle {1 \over 2}mv^2
Here is a video about work, potential energy & kinetic energy from Bozeman Science
httpv://www.youtube.com/watch?v=BSWl_Zj-CZs
Most of the calculations will be based on the principle of conservation of energy. Dr. Altman has an excellent series of videos examining conservation of energy examples from Roadrunner cartoons.
httpv://www.youtube.com/watch?v=oRrkeyigkiE
httpv://www.youtube.com/watch?v=cmQTTAL3WYM
httpv://www.youtube.com/watch?v=x0RHbftgbF4
I have attached a pdf handout with worked examples on potential energy, work and kinetic energy. If you want some more revision materials, try here.
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Here are the solutions to the HW exercise I set before Christmas. I am pleased to see so many of you showing full working.
Please download the pdf and go through anything you didn’t get right. Based on what I saw in your jotters, some answers have more detail than others.
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Your homework exercise on resistance is attached as a pdf document. Download the file and answer the questions in your homework jotter. Hand in your jotter no later than Monday 17/12/12.
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