most recent 30 from http://merspi.com.au 2010-09-08T23:54:41Z http://merspi.com.au/feeds http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://merspi.com.au/questions/2057/why-does-n-h-form-a-positive-dipole-while-co-forms-a-negative-dipole-in-an-amino neurolo gist 2010-06-02T07:09:24Z 2010-09-08T13:23:02Z

<p>Why does N-H form a positive dipole while C=O forms a negative dipole in an amino acids (thus allowing their secondary structure)?</p> <p>Couldn't it be the other way around as well?</p>

http://merspi.com.au/questions/2693/why-do-biologists-grow-the-cells-and-suspend-them-in-mitosis-specifically-for-a-k Stan 2010-08-25T12:06:20Z 2010-09-08T13:23:02Z

<p>Why do biologists grow the cells and suspend them in mitosis specifically for a karyotype?</p>

http://merspi.com.au/questions/2812/vce-japanese-revision-lectures Maggie 2010-09-08T11:32:30Z 2010-09-08T11:32:30Z

<p>Hey guys, I'm just wondering do any of the private companies run Japanese revision lectures? Thanks</p>

http://merspi.com.au/questions/2605/what-vce-topic-do-you-suggest-i-choose Jessica 2010-08-11T06:37:24Z 2010-09-08T08:23:04Z

<p>I am currently in year 9 and want to do a year 11, unit 1 &amp; 2 study in year 10. I have biology, outdoor environmental studies and health and human development that I am choosing between. I'm stuck, because I really want to make a decision I won't regret. I've heard that Biology is quite difficult, but then others say that it's good to do it in year 10 and 11 because you can concentrate on it more... I'm quite sure that I will do biology at some point, but next year is my only chance to do units 1 &amp; 2 for outdoor enviromental studies. And I don't know much about health and human development but I think it could interest me.</p> <p>Any comments or suggestions are appreciated.</p>

http://merspi.com.au/questions/2809/how-does-being-in-a-low-achieving-class-have-an-affect-on-my-vce-enter Lisa 2010-09-08T07:40:30Z 2010-09-08T07:40:30Z

<p>Some people tell me that if I go to a really bad school or placed in a 'dumb' class, it would have an affect on my enter/ atar score. How does it affect it? And by how much? </p> <p>Because right now, I go to a school with average teachers but smart people and I am considering moving back to my old school because they have outstanding teachers but not very intelligent students. The school with high achieving students is a VERY expensive school and the other is a public, I was also told that Melbourne Uni would accept students from the private school over other schools because they have a relationship with them. I'm unsure which school to choose. I want to be a doctor when I'm older. Please help me! All those years studying down to VCE...</p>

http://merspi.com.au/questions/2512/why-does-my-textbook-say-that-each-electron-must-produce-its-own-magnetic-field guy 2010-07-26T13:39:53Z 2010-09-08T01:23:09Z

<p>Context: </p> <blockquote> <p>Electrons travel around the nucleus of an atom in circlelike paths, so each electron must produce its own magnetic field.</p> </blockquote>

http://merspi.com.au/questions/2764/splitting-graphs-in-methods disembler 2010-09-05T04:15:53Z 2010-09-07T12:51:21Z

<p>Why do we have to redife the integral when the graph curve passes through the axis instead of just having integral encompassing its entire domain? Why do we need to split it up?</p>

http://merspi.com.au/questions/2777/what-should-i-type-into-the-calculator-ti-nspire-cas i am a toad 2010-09-06T09:13:06Z 2010-09-07T12:25:38Z

<blockquote> <p>The times (in minutes) taken for students to complete a university test are normally distributed with a mean of 200 minutes and standard deviation 10 minutes.</p> <p>The proportion of students who complete the test in less than 208 minutes is closest to?</p> </blockquote> <p>When I type: invNorm(208,200,10) into the CAS calc I get a "domain error".</p> <p>What am I doing wrong?</p> <p>I also tried converting to Z first.</p> <p>208-200/10 = 8/10 (invNorm(8/10,1,0)) gives me 0.841621 which is not the solution.</p> <p>Can you help me?</p>

http://merspi.com.au/questions/2776/tinspire-cas-help i am a toad 2010-09-06T09:03:36Z 2010-09-07T12:19:19Z

<blockquote> <p>If wanted to do this on the CAS: A bag contains three white balls and seven yellow balls. Three balls are drawn, one at a time, from the bag, without replacement. The probability that they are all yellow is?</p> </blockquote> <p>Would I type:</p> <p>*nCr(10,3) * (7/3) ^3 * (3/10) ^7?* </p> <p>This didn't work for me. I got an answer, but it was incorrect. </p> <p>Help?</p>

http://merspi.com.au/questions/2782/do-you-add-subtract-the-reductant-oxidant i am a toad 2010-09-06T10:55:58Z 2010-09-07T12:04:05Z

<p>when you're working out the voltage of a redox reaction for a cell do you subtract the Enought value of the reductant half equations from the oxidant's, or the other way round....?</p>

http://merspi.com.au/questions/2797/for-a-probability-distribution-how-come-the-mode-is-the-highest-prxx-value-an Ruined 2010-09-07T10:03:48Z 2010-09-07T12:00:16Z

<p>for a probability distribution, how come the mode is the highest pr(X=x) value and not the highest xPr(X=x) value? </p>

http://merspi.com.au/questions/2642/misconceptions-common-in-vce-chemistry Japan 2010-08-17T06:55:31Z 2010-09-07T11:56:40Z

<p>I recently heard that these were misconceptions common in VCE chemistry:</p> <p>"...plus and minus signs assigned to the electrodes represent net electronic charges.."</p> <p>and "notions that half-cell potentials are absolute and can be used to predict the spontaneity of individual half-cells..."</p> <p>and "and electrochemical cell potentials are </p> <p>independent of ion concentrations."</p> <p>It seems I've fallen for these misconceptions out of those I heard of. Could someone help clear the water for me on these?</p>

http://merspi.com.au/questions/2769/i-have-a-terrible-habit-of-putting-ag-for-the-state-instead-of-aq-will-this Impractical 2010-09-05T09:29:12Z 2010-09-07T11:41:27Z

<p>I have a terrible habit of putting (ag) for the state instead of (aq) sometimes. Do you think I would have lost marks in the exam for doing this? I do it about 70% of the time I do an (aq) state and it's a horrible habit! What do you think?</p>

http://merspi.com.au/questions/1408/how-do-you-move-1-3-for-the-three-median-regression-line Lex 2010-03-11T11:22:33Z 2010-09-07T10:23:30Z

<p>Is it only moved approximately 1/3 of the way up/down or do you need to solve to find the equation of the new line? </p> <p>Once the line has been moved, how do you figure out the equation of the line? Again do you pick two points on it by eye or is there another method? My textbook (Heinemann) seems to be saying that it relies on some judgement. Thanks.</p>

http://merspi.com.au/questions/2684/are-predators-considered-selective-agents-or-do-they-cause-genetic-drift hai 2010-08-24T06:39:00Z 2010-09-07T10:22:52Z

<p>Are predators considered selective agents or do they cause genetic drift?</p> <p>They cause a bottleneck effect on the prey because they do everything so randomly (happen to stumble upon predator) but at same time the prey might have the ability to hide from predator which is an adaptation therefore natural selectioon?</p> <p>So what is it?</p>

http://merspi.com.au/questions/2608/english-study-score McGregos 2010-08-12T05:17:56Z 2010-09-07T10:09:13Z

<p>If I was to keep getting Bs in English all throughout the year, and about 65-70% on the exam, another C+-B, what type of study score would i be looking at? Cheers lads, and ladettes ;)</p>

http://merspi.com.au/questions/2765/whats-the-difference-between-the-forward-and-reverse-primer OptamusPrimer 2010-09-05T05:59:41Z 2010-09-07T09:55:23Z

<p>What's the difference between the forward and reverse primer? I don't get it.</p>

http://merspi.com.au/questions/2674/is-mitochondrial-dna-the-same-as-diploid Homer 2010-08-23T09:00:14Z 2010-09-07T09:22:51Z

<p>Is Mitochondrial DNA the same thing as diploid? </p>

http://merspi.com.au/questions/2434/what-are-all-the-relationships-between-sin-and-cos Solong 2010-07-20T08:30:35Z 2010-09-07T09:18:33Z

<p>What are all the relationships between sin and cos?</p> <p>I know that they are derivatives of one another (with modification) and also that when they are squared and added together they produce 0. What other rules relate them to one another or to something together?</p>

http://merspi.com.au/questions/2671/if-two-purebred-guinea-pigs-are-crossed-what-is-the-expected-proportion-of-heter Homer 2010-08-23T08:33:04Z 2010-09-07T08:22:56Z

<p>Black colour in pigs is dominant to white colour.</p> <p>When a pure breeding black pig is crossed with a white one, what fraction of the F2 generation is expected to be heterozygous.</p> <p>All the alternative answers did not have 1/1. The solution says 1/2.</p> <p>Are they incorrect?</p>

http://merspi.com.au/questions/2787/if-i-study-a-science-degree-at-unimelb-with-an-engineering-major-can-i-tell-peop ap 2010-09-06T15:43:01Z 2010-09-07T03:49:10Z

<p>If I study a science degree at unimelb with an engineering major, can i tell people i'm studying engineering and melbourne, or should i say i'm studying scinece at melbourne?</p>

http://merspi.com.au/questions/147/does-anybody-have-resources-for-whose-reality-english asa.hoshi 2009-10-24T05:44:22Z 2010-09-06T23:31:21Z

<p>Books, transcripts, websites all welcome</p>

http://merspi.com.au/questions/2378/what-is-libyas-current-view-on-israel-palestine-conflict Piano 2010-07-09T12:20:08Z 2010-09-06T14:22:55Z

<p>What is Libya's current view on Israel-Palestine conflict</p> <p>Also, does Libya still have any sanctions placed on it? By whom, of what? </p>

http://merspi.com.au/questions/2786/can-you-help-me-with-these-probability-questions Albert Camus 2010-09-06T12:19:30Z 2010-09-06T12:19:30Z

<p>I did a series of tests and from them got the following wrong. Could someone walk me through each of them? They are probability questions:</p> <p>A discrete random variable has a mean of 5 and a standard deviation of 3. E(x^2) is then equal to?</p> <p>60 per cent of all tickets sold at a racecourse are Adult tickets and the remaining 40 per cent are Concession tickets. A random sample of 20 tickets is taken. The probability that this sample contains exactly twelve Adult tickets is equal to?</p> <p>At a party there are six unmarked boxes. Two boxes each have prizes, the other four boxes are empty. When two boxes are selected without replacement, the probability of selecting at least one box with a prize is?</p> <p>A binomial random variable has mean 20 and variance 4. The values of n and p respectively are?</p> <p>In a shipment of electrical conductors, it is found that 8% are defective. A sample of 30 conductors is selected at random. The standard deviation of the number of defective conductors selected is closest to?</p> <p>Sorry there are so many. They are from multiple chapters that's why. Thank you.</p>

http://merspi.com.au/questions/2781/when-can-i-use-the-combinations-equation-thingy-ncr-px-qn-x-what-ty i am a toad 2010-09-06T10:54:03Z 2010-09-06T12:17:27Z

<p>when can I use the combinations equation thingy? nCr (p^x) (q^n-x) .......What type of question? how do i know if the question i'm doing is that type lol? can you help me?</p>

http://merspi.com.au/questions/2480/can-i-do-three-science-subjects-in-vce Hermon 2010-07-23T08:08:19Z 2010-09-06T12:00:25Z

<p>Is it too hard to do three science subjects, because i was thinking about doing Biology, chemistry and psychology? comments please</p>

http://merspi.com.au/questions/2770/what-are-the-standard-conditions-from-which-the-enought-values-of-the-electro Impractical 2010-09-05T09:37:10Z 2010-09-06T10:05:48Z

<p>What are the 'standard conditions' from which the E*nought* values of the electrochemical series are measured? </p>

http://merspi.com.au/questions/2673/do-we-have-to-know-about-the-gondwana-land-geography Homer 2010-08-23T08:57:19Z 2010-09-06T09:22:53Z

<p>Do we have to know about the Gondwana land geography and all that stuff for questions about migration? I had a question about some birds that migrated and about how they could move from island to island cause they had no wings. The solutions were some b/s about Gondwana land. What do we have to know?</p>

http://merspi.com.au/questions/2667/i-am-interested-in-becoming-a-mathematics-statistician-however-the-university-i Tyler 2010-08-22T04:52:08Z 2010-09-06T07:54:39Z

<p>What are my options? I am going to ask the university directly, but since they want a prerequisite of chemisty, physics or biology to enter their bachelor of science (even if its the mathematics stream you are to enter). Will doing an intense physics course enable me to have this prerequisite? If not what are my other options. </p>

http://merspi.com.au/questions/2593/how-does-lewis-enable-the-audience-to-understand-the-complexities-of-nowras-worl John 2010-08-09T04:31:46Z 2010-09-06T07:22:54Z

<p>Need some insights into this essay topic</p>