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OAT Equations
Started by raleighzia
could I get a copy of that PM 😀
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Hi Arctic, I was wondering if I could get a PM too? I'm taking the test this Friday and I'm hoping I know most of the equations.. but just want to make sure. Thanks!
hah
Arctic Why not just post on one of the stickies that give students information?
Arctic is the man! He's helped me a ton already! If I get into PCO next year.....I'm buying you a drink!!!
I see you also commented on my PCO interview article over on www.optometrystudents.com Thanks for reading!
I can't sticky a thread because I'm not a moderator, however I'll consider that option if it presents itself as a possibility?
As for a public post update on the equations, I'll post them here tonight! Also, I'm writing a more extensive article for this on www.optometrystudents.com so be sure to check that out when it is up (that may take a few days).
ANY questions on the OAT, please ask either on here, or on our optometry website, and I will respond asap.
Good luck everyone!
I can't sticky a thread because I'm not a moderator, however I'll consider that option if it presents itself as a possibility?
As for a public post update on the equations, I'll post them here tonight! Also, I'm writing a more extensive article for this on www.optometrystudents.com so be sure to check that out when it is up (that may take a few days).
ANY questions on the OAT, please ask either on here, or on our optometry website, and I will respond asap.
Good luck everyone!
Alright so, as promised, here is a preliminary post of my OAT equations list. The article for this is now being posted on www.optometrystudents.com and is an expanded version of this, including more example problems!
Note: I have made up ALL of the example problems given here myself, so don't worry about any copyright violations regarding these.
For Biology, you need to know the Hardy-Weinberg equilibrium conditions, know the formula p squared plus 2 pq plus q squared, and know how to calculate genetics ratios in offspring.
For an example problem, if the father has a sex-linked recessive trait (on the X chromosome, as almost all of them are), and the mother is phenotypically normal, and the allele frequency of the recessive trait in the population is .01 then what are the odds that a male child will exhibit the recessive phenotype (barring mutations)? Answer is .01, because he just gets a Y chromosome from the father, and his one X chromosome comes from the mother, and the probability of this chromosome containing the recessive allele is essentially equal to .01, or it's allele frequency in the population. It's actually a very tiny amount less, but I'm not getting into that mathematical technicality. What about the odds of a female child exhibiting the recessive phenotype? The odds are the SAME (.01) because she has to get a recessive X from the father, and then the odds of a recessive allele coming from the mother is again, essentially .01.
For General Chemistry, the most important equation is the combined gas law pv=nRt where p is pressure, v is volume, n is number of moles, R is the gas constant (be sure it's units match with the units from the other variables!) and t is temperature in kelvins. Know stoichiometry cold! You must understand things like molarity, molality, gram formula mass, how to balance oxidation-reduction reactions, etc. Another important concept is enthalpy.
A simple enthalpy example: How much energy, in calories (although they'd more likely ask in joules), does it take to heat 3 grams of ice from -8 Celcius to 142 degrees Celcius? I won't go into much detail here, but it's 3 x .5 x 8 plus 3 x 80 plus 3 x 1 x 100 plus 3 x 540 plus 3 x .5 x 42
To find it in joules, multiply that whole answer by roughly 4.18
For Quantitative Reasoning, know all about the various trig. setups (including arc functions), and know the values for the trig. functions of the following angles (in degrees): 0, 30, 45, 60, 90, 180, 270, 360, and understand how to interconvert between degrees and radians, know the different right triangle ratios (such as 3, 4, 5, or 5, 12, 13) and the multiples of those, etc. The rest of it is more or less just applying algebra.
An example QR problem: sin of 11 pi over 12 is equal to which of the following: arcsin of pi over six (absurd choice) sin of 13 pi over 12 (close, except the sine function is negative in quadrant 3) or sin of pi over 12 (correct answer)
For Physics, there's a whole bunch of equations to know, as I'm sure you are aware. Know the equations for projectile motion, work, energy (potential and kinetic energy), momentum including angular momentum, friction, density, pressure, spring equations (for energy, frequency and period as well), know how to interconvert pretty much all the various units, know the stuff for electricity, magnetism, and circuits (only bother with DC circuits, not AC circuits) and know the lensmaker's equation. You are not likely to be asked a problem on Snell's Law (although you still can be) simply because, without a calculator, they'd have to go SO far out of their way to give you nice indices of refraction and angles.
I'm not giving another physics example, as I already answered a physics problem earlier.
If anyone has ANY questions, feel free to ask me!!!
Note: I have made up ALL of the example problems given here myself, so don't worry about any copyright violations regarding these.
For Biology, you need to know the Hardy-Weinberg equilibrium conditions, know the formula p squared plus 2 pq plus q squared, and know how to calculate genetics ratios in offspring.
For an example problem, if the father has a sex-linked recessive trait (on the X chromosome, as almost all of them are), and the mother is phenotypically normal, and the allele frequency of the recessive trait in the population is .01 then what are the odds that a male child will exhibit the recessive phenotype (barring mutations)? Answer is .01, because he just gets a Y chromosome from the father, and his one X chromosome comes from the mother, and the probability of this chromosome containing the recessive allele is essentially equal to .01, or it's allele frequency in the population. It's actually a very tiny amount less, but I'm not getting into that mathematical technicality. What about the odds of a female child exhibiting the recessive phenotype? The odds are the SAME (.01) because she has to get a recessive X from the father, and then the odds of a recessive allele coming from the mother is again, essentially .01.
For General Chemistry, the most important equation is the combined gas law pv=nRt where p is pressure, v is volume, n is number of moles, R is the gas constant (be sure it's units match with the units from the other variables!) and t is temperature in kelvins. Know stoichiometry cold! You must understand things like molarity, molality, gram formula mass, how to balance oxidation-reduction reactions, etc. Another important concept is enthalpy.
A simple enthalpy example: How much energy, in calories (although they'd more likely ask in joules), does it take to heat 3 grams of ice from -8 Celcius to 142 degrees Celcius? I won't go into much detail here, but it's 3 x .5 x 8 plus 3 x 80 plus 3 x 1 x 100 plus 3 x 540 plus 3 x .5 x 42
To find it in joules, multiply that whole answer by roughly 4.18
For Quantitative Reasoning, know all about the various trig. setups (including arc functions), and know the values for the trig. functions of the following angles (in degrees): 0, 30, 45, 60, 90, 180, 270, 360, and understand how to interconvert between degrees and radians, know the different right triangle ratios (such as 3, 4, 5, or 5, 12, 13) and the multiples of those, etc. The rest of it is more or less just applying algebra.
An example QR problem: sin of 11 pi over 12 is equal to which of the following: arcsin of pi over six (absurd choice) sin of 13 pi over 12 (close, except the sine function is negative in quadrant 3) or sin of pi over 12 (correct answer)
For Physics, there's a whole bunch of equations to know, as I'm sure you are aware. Know the equations for projectile motion, work, energy (potential and kinetic energy), momentum including angular momentum, friction, density, pressure, spring equations (for energy, frequency and period as well), know how to interconvert pretty much all the various units, know the stuff for electricity, magnetism, and circuits (only bother with DC circuits, not AC circuits) and know the lensmaker's equation. You are not likely to be asked a problem on Snell's Law (although you still can be) simply because, without a calculator, they'd have to go SO far out of their way to give you nice indices of refraction and angles.
I'm not giving another physics example, as I already answered a physics problem earlier.
If anyone has ANY questions, feel free to ask me!!!
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