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admin
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msamadia1231
Joined: 24 Nov 2006
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 Posted: Wed Sep 05, 2007 8:41 am Post subject: |
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| I didn't see one for electric field. |
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admin
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| Posted: Wed Sep 05, 2007 3:59 pm Post subject: |
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| The list has 2 equations involving electric field E: the all important F=qE and V=Ed. |
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c_madero1862
Joined: 21 Jan 2010
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| Posted: Wed Jan 27, 2010 12:58 pm Post subject: Some Clarifications |
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After reviewing the equations list, I had a few questions about what the variables are.
Frictional force = (mue)N - What is the N? Force?
Centripedal Motion = Fc = mac - what is c? The energy of light?
I didn't understand the continuity of fluids equations. Is const. "constant"?
Thermodynamics Q = mL - What is L? Liters??
Torque forces - what is CCW + ve?
In the refraction equation, n2/n1 is the only equation that has the second variable on the top. Is this a typo, or is this the exception?
Average acceleration equation - what is vav and aav?
In the Work in Electricity equation, should this equation be PE = W = 1/2QV2, or 1/2QV as it is written in the list.
Lastly, the equation list states that an alpha particle is 2He4, isn't supposed to be 4He2? Just clarifying 
Thanks for your assistance. |
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mcat_premed3832
Joined: 19 Oct 2006
Posts: 413
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| Posted: Thu Jan 28, 2010 7:21 pm Post subject: |
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You definitely would benefit to some time with a comprehensive MCAT review book (of course we would suggest The Gold Standard) so that you can be more familiar with the structure, meaning and application of these equations. The truth is that an equation list has only 2 uses: (1) review for students who already know the information but require reminders and (2) for students who are currently studying and want a guide as to what to memorize vs. what to just get a "feeling for".
Once you have completed your studies, you won't have problems with variable even if the letters are different from what you are used to. The reason is that you would instantly recognize the pattern (in fact, when you become a Dr. one day, you will often hear the words "pattern recognition" in medical school).
Nonetheless, what follows is intended to answer your questions:
| Quote: | | Frictional force = (mue)N - What is the N? Force? |
N is the "normal force" or sometimes called "force normal"
| Quote: | | Centripedal Motion = Fc = mac - what is c? The energy of light? |
c stands for centripedal; so Fc is the centripedal force.
| Quote: | | I didn't understand the continuity of fluids equations. Is const. "constant"? |
Yes
| Quote: | | Thermodynamics Q = mL - What is L? Liters?? |
L is the latent heat.
| Quote: | | Torque forces - what is CCW + ve? |
Torques are turning forces so CCW +ve means that counter-clockwise is positive.
| Quote: | | In the refraction equation, n2/n1 is the only equation that has the second variable on the top. Is this a typo, or is this the exception? |
It is not a typo, it is correct as written (with experience, you will see Snell's Law).
| Quote: | | Average acceleration equation - what is vav and aav? |
"av" = average; so vav is the average velocity; aav is the average acceleration
| Quote: | | In the Work in Electricity equation, should this equation be PE = W = 1/2QV2, or 1/2QV as it is written in the list. |
It is written correctly in the list. You can look at the following reference: http://www.ac.wwu.edu/~vawter/PhysicsNet/Topics/ElectricPotential/Potential.html
| Quote: | | Lastly, the equation list states that an alpha particle is 2He4, isn't supposed to be 4He2? |
The way you have written it, it is impossible to say what is correct. However, in the equation list, it is written correctly. However, there are 2 correct formats but BOTH have the same basic idea: what matters is the position of the superscript and the subscript. |
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admin
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| Posted: Thu Jan 28, 2010 7:53 pm Post subject: This is for testing purposes, please ignore this post |
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| This is for testing purposes, please ignore this post |
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admin
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| Posted: Thu Jan 28, 2010 9:16 pm Post subject: Re: This is for testing purposes, please ignore this post |
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| This is for testing purposes, please ignore this post |
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