Search results

  1. C

    Engineering Marathon

    The picture of the question really helps. I think answers include: Regenerative Braking... Transmitting energy to the efficient electric motor rather than the inefficient gearbox drive train. Using the electric motor at slow speeds which is more efficient than a petrol motor and using a petrol...
  2. C

    Engineering Marathon

    I managed to get AB as 16.28822036 kN tension. A brief description of how I did it. I got the angle under the bridge 12.52880771 (the line from RB to B and the angle between that to horizontal). Using this angle, I then got the vertical distance from the horizontal to B by using trig with the...
  3. C

    I don't understand 2007 HSC Question 10.

    Nice answer, thanks.
  4. C

    I don't understand 2007 HSC Question 10.

    A mild steel test piece was made into 1/4 scale. It was stretched to 200kN tension until destroyed. At what minimum force would you expect the full size component to fail? The answer is 3200kN. How do you do this?
  5. C

    Hollow cylinder vs Solid cylinder. Which has a better strength to weight ratio?

    Taken from Yahoo answers: Of course a hollow cylinder will have a better strength: weight ratio than a solid cylinder. The section of a cylinder bearing the most stress in terms of bending is the section furthest from the central axis. So getting rid of most of the inner material affects the...
  7. C

    Hollow cylinder vs Solid cylinder. Which has a better strength to weight ratio?

    Solid cylinder: 12 mm diameter Second moment of area = 1.02 * 10^(-9) m^4 BM = 12 kNm Hollow cylinder: 25 mm diameter 1.2 mm wall thickness Second moment of area = 6.37 * 10^(-9) m^4 BM = 12 kNm Which has a better strength to weight ratio? What the maximum bending stress of each? Why would...
  8. C

    Should conscription be re-introduced in 21st Century Australia?

    Was that meant to be an insult? Anyhow, remember that I did not dictate any specific country. @blue: What are you confused about?
  9. C

    Privatise the Military

    Well they won't be directly controlled, because there is a great distinction between doing something yourself and outsourcing to someone else. With military affairs, the distance and vastness of operations have increased exponentially, its not like hiring out someone to build just a website...
  10. C

    Should conscription be re-introduced in 21st Century Australia?

    Near the turn of the century, WW1 hits. Conscription was instated, conscription seems to be instated whenever there are epic wars happening. In my opinion, conscription should be used when the time calls for it. However during peace, the army should remain professional volunteers.
  11. C

    Privatise the Military

    There quite a few problems with privatizing something as controversial as the military. a) Mercenaries are not recognized as lawful combatants under UN Protocol Additional GC 1977. In such a case, in the countries that recognize the UN protocol, they will be subject to domestic laws. Their...
  13. C

    business..transfer pricing??

    What I don't get is, why go through so much trouble of selling to another subsidiary. Can't you just transport it, and only incur transport costs? Almost like giving it away free of charge to the other subsidiary. Why don't do that?
  14. C

    Has anyone else done YAA Business Skills?

    I was there.
  15. C

    Accounts Receivable Turnover Ratio

    I want to know too. Which is the right formula. 1. Net Credit Sales/Average Accounts Receivable 2. Sales/Average Accounts Receivable. Second one is easy. But if the formula is the 1. Then how do we calculate Net Credit Sales?
  16. C

    Is unsecured notes considered an equity finance or debt finance.

    Ditto.
  17. C

    Bush dodges again!

    "uncontrolled outburst" "act on impulse" I think you are referring to humanity in general.
Top