GBMUD Posted November 19, 2007 Share Posted November 19, 2007 92% - staggeringly! The question about the gear ratios got me confused and I missed that one. I too got the piston one wrong as I only read as far as the correct (as far as I was concerned) answer. I did the same with the bob weights by failing to read the whole question. Water in the pipe, hands up, I got wrong on my own as I thought about venturii and just got the high pressure/low speed bits wrong. I do actually know the answer. So, but for reading it properly and taking the time to think properly about it, I could have had 98% too. The test says that it does not measure what you know, but to be honest, I think that it assumed a hell of a lot of knowledge. I only have GCSE Science to rely on. Chris Quote Link to comment Share on other sites More sharing options...
HoSS Posted November 19, 2007 Share Posted November 19, 2007 I know no ones going to believe me, but 100%. I did think about each one quite carefully (dont tell me boss). a few notes/anbguities - kg is not a measure of force - which oil? some are heavier than water - suction/air pressure - thats very debatable - yes air pressure is the direct cause, but only beacuse the piston has moved down & caused a reduced pressure. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted November 19, 2007 Share Posted November 19, 2007 96% for me B) As has been said some of the terminology was plain wrong. Force in psi? psi was a measure of pressure when I was at school I got the piston engine one wrong too - you could say it was either I think, and both were arguably wrong. The other one was a "wibble" moment on parallel/series no idea why I got it wrong as I knew what the answer was Quote Link to comment Share on other sites More sharing options...
SteveG Posted November 19, 2007 Share Posted November 19, 2007 I knew I shouldn't have done this test , I got 3 wrong that I'm still disputing the answers after reviewing it . So the piston one I got wrong, as I said suction. I should have read this post to the end before doing the test The balloon one I still dispute. The atmospheric pressure is the same on all. The pressures inside the ballons are different. Semantics And the tube one I also got wrong. Now fluid dynamics are not my strong point but, if the liquid is flowing at a constant rate then I would have thought that the pressure would be lower in the wider section of the tube and higher in the narrower section. So if that's the case, B would be higher than A not the other way round. I also got one of the gear questions wrong, where you had to match them up, but I struggled on that one Cheers Steve Quote Link to comment Share on other sites More sharing options...
GBMUD Posted November 19, 2007 Share Posted November 19, 2007 I may have to do it again and get 100%... Chris Quote Link to comment Share on other sites More sharing options...
muddy Posted November 19, 2007 Share Posted November 19, 2007 80% spose its not bad for a 17 year old lol few things i have never heard of there so an educated guess was required, me and my dad are in turmoil at both getting 80% mind one of us has to be beter Quote Link to comment Share on other sites More sharing options...
Lewis Posted November 19, 2007 Share Posted November 19, 2007 Scraped a pass with a meager 80% Quote Link to comment Share on other sites More sharing options...
Gromit Posted November 19, 2007 Share Posted November 19, 2007 The balloon one I still dispute. The atmospheric pressure is the same on all. The pressures inside the ballons are different. IIRC, it does ask which balloon had the greatest pressure on it, implying that they are not all in the same atmosphere. The picture doesn't convey that though. I got 92, not bad for a muppet. Quote Link to comment Share on other sites More sharing options...
Guest diesel_jim Posted November 20, 2007 Share Posted November 20, 2007 Scraped a pass with a meager 80% Join the club.... mind you, didn't you know, 80 is the new 100..... B) B) Quote Link to comment Share on other sites More sharing options...
HoSS Posted November 20, 2007 Share Posted November 20, 2007 IIRC, it does ask which balloon had the greatest pressure on it, implying that they are not all in the same atmosphere. The picture doesn't convey that though. Thats pure Boyles law - Volume of a gas is inversely proportional to pressure where temperature is constant. Quote Link to comment Share on other sites More sharing options...
MrsRaceface120 Posted November 20, 2007 Share Posted November 20, 2007 78% - not a pass but I'm quite chuffed with that what with my GCSE Physics being quite a while ago now and me driving a desk for a living! Oh - and I'm a girl and everybody knows girls know nothing about engineering Jin Quote Link to comment Share on other sites More sharing options...
Guest WALFY Posted November 21, 2007 Share Posted November 21, 2007 Bugger. Beaten by a girl. Will I cope with the shame Quote Link to comment Share on other sites More sharing options...
Les Henson Posted November 21, 2007 Share Posted November 21, 2007 no Les. Quote Link to comment Share on other sites More sharing options...
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