Thursday, January 27, 2011

 

Wednes-Day 1

Physics - we discussed "series circuits" in which resistors are placed consecutively in a circuit and connected by metal wires. We noted that the TOTAL/equivalent resistance in a series circuit is simply the SUM of the resistances from the resistors. We also used Ohm's Law to calculate the "voltage drop" or potential difference ACROSS each of the resistors. We saw that the sum of the voltage drops equals the overall potential difference in the battery, and that each voltage drop across each resistor is directly proportional to the resistance of each resistor.
We then did some questions in the packet on series circuits and work/energy and power/rate of energy used by each resistor in a given circuit.
We then did an Ohm's law lab.


AP Chem - finished discussing the time-dependent rate equation for first order kinetic processes.
We then applied our convenient version of the formula to some typical kinetics questions.
We also analyzed the various graphs of first order processes and made inferences and predictions from them.
Enjoy the snow day; descriptive chem quiz and completion of the kinetics unit on Friday, no matter what.




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