Here is a sense of what will be on the midterm with an updated from Monday, 9:00 PM (see below). Please check for further updates tommorrow as well as questions and comments.
A lot the content will be similar to the quizzes. Know the atoms from H to Ne: what they are made of, what determines mass and size...
Understand temperature and its relationship to microscopic atomic motion. Understand the difference between macroscopic and microscopic quantities. Known which T scale has fundamental meaning and what that meaning is.
In addition, there will be a question(s) regarding masses moving in a potential energy. Kind of like we discussed for pendulum and harmonic oscillator (mass on a spring), and with gravitational potential energy. Familiarize yourself with the 1/2 k x^2 potential (harmonic oscillator) and the motion associated with that and how to think of that in terms of energy and especially a mass in a potential energy function or "well". This will be reviewed and discussed in class Monday.
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Midterm study guide (Monday, 9:00 PM):
Known the rough mass, in amu, of each atom from H(1) (and D) to Ne (20). Also, how many electrons each atom has.
Know that atom size is controlled by electrons. And that H is somewhat bigger than He. Li is even bigger and then as you go across the row the atoms get progressively smaller all the way to Ne, which is the smallest.
Know how to work problems which involve relating atom speed to gas temperature. Like those on the HW.
Understand how to work problems involving potential energy. For example:
Suppose a mass, m, is subject to a force such that its potential energy as a function of x is (1/2) k x^2 (like if it were attached to a spring...). a) Where is the lowest point of this potential? b) graph this potential as a function of x. c) suppose the mass starts out at the lowest point of the potential with an initial speed of v (to the right). What will happen? How far will it go before its speed decreases to zero? What will happen after that? Assume there is no friction.
Does this make sense? Is this problem understandable?
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If anyone has any ideas for other problems, please feel free to post them here.
Also, any questions, etc.
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When is the midterm going to be?
ReplyDeletemidterm is on the 11th. its this wednesday
ReplyDelete"Understand the difference between macroscopic and microscopic quantities."
ReplyDeleteCan someone clarify what the difference between macro/microscopic quantities is? Thanks!
Macro ~ large, everyday objects.
ReplyDeleteMicro ~ small, objects we can't see/touch/smell hear.
The temperature of boiling water is macroscopic, I can definitely feel it. However, what causes the temperature is the microscopic velocities of each molecule in the liquid.
Eliot, can I have your email address? I'm kind of freaking out about my grades in the class and everything. I keep thinking I understand the material but then fail miserably on the quizzes. My email is mcovey@ucsc.edu.
ReplyDelete-Megan Covey
i am freaking out about this midterm. can anyone who is highly competent in this course please tutor me on tuesday, the day before the midterm, so i dont completely fail miserably. if so, please email mail, thanks. csoulage@ucsc.edu
ReplyDeleteWill there be anymore review information to come? Maybe a study guide?
ReplyDeleteThere will hopefully be a review on Tuesday afternoon; we will know for sure as soon as we hear about the room.
ReplyDeleteIf you can sit down, without looking at the solutions or anything else, and do the two quizzes as if you were seeing them for the first time and really understanding the reasoning behind each solution, that is very good preparation. In addition, I will post more about doing problems involving a potential energy function later, as well as other study aids.