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Hi, Question: James has a ticket for a football match in Sydney for which he paid $45. On the day of the game he takes the train to Sydney Olympic Park, which costs him $3. When he arrives, he realizes that the game is taking place in Moore Park instead. He can take a taxi for $50 and arrive...

https://9eeba4054ee764a743f35bb25b5f907e66151207.googledrive.com/host/0ByEFYhkkDQBKUmxzb0Q4MEswQ3c/Year%2012%20-%20HSC/Chemistry/Past%20Trials/Girraween/Girraween%202011%20Chemistry%20Trials%20&%20Solutions.pdf how would I do q3 and q8? and also, is the answer to q13 D?

http://imgur.com/LJpmGsZ For (ii) I keep getting an extra "+sin(phi)" at the numeratorbecause of the product rule? for (iii) I can't show it but does that imply that dtheta/dt also equal zero? sounds odd. because, if NT is tangential, angle NTO = 90, angle NOT = 180-theta which means phi =...

https://9eeba4054ee764a743f35bb25b5f907e66151207.googledrive.com/host/0ByEFYhkkDQBKUmxzb0Q4MEswQ3c/Year%2012%20-%20HSC/Maths/Past%20Trials/James%20Ruse/4U/James%20Ruse%202014%204U%20Trials%20&%20Solutions.pdf q16 a i) why is the angular velocity about B = -pi/2 ? It makes sense, because it...

A particle P is undergoing uniform circular motion, while being pulled by two strings, one connected at A with the other string connected at B, vertically under A. At A, there is a hollow ring that is suspended. I drew the tensions in string AP, one tension going away from B towards P and...

*HSC 2012 How would I do this? (ii) Consider three identical separators to divide the 10 coins into 4 boxes, total = 13 items, including 3 identical separators and 10 identical coins. This was from Terry Lee's solutions, he referred to his book but I don't have it. What's a "divider" and can...

(x+y)^n = ^nC_0 x^{n}y^{0} + ^n C_1 x^{n-1}y^{1} + ... + ^n C_{r} x^{n-r}y^{r} + ... + ^n C_{n}x^{0}y^{n} Is this always the way you expand it? Because I was doing a question where their general term was: ^n C_{r} x^{r}y^{n-r} The powers are swapped around. Although it is symmetrical, this...

If it says to rotate around a line by 180 degrees would you find the normal rotation and halve it and why or why not?

http://imgur.com/3XkMC2y Can someone explain this

How would i sketch x^x? Also, why is f(x) not defined for x<0 ? When (-2)^(-2) = 4?

If HCO3^- is an amphiprotic substance meaning it can act as both acid and a base, won't its pH change at the same concentration? because if it acts as a base then wouldn't its pH be above 7 and if it acts as an acid its pH will be below 7

The acceleration of a particle is 2x-5 m/s^(2) where x is the distance in metres from the origin. a) Find expression for the velocity of this particle in terms of x, given that the particle is at rest one metre to the left of the origin initially. I got v^2 = 2x^2 - 10x -12 but can't find a...

An unbiased die is thrown six times. Find the probability that the six scores obtained will be such that a 6 occurs only on the last throw and exactly three of the first five throws result in odd numbers. How would I start this?

Can someone help me deconstruct these images a bit? I have no idea. I think the street philosopher has something to do with contextual power and authorial voice? I really don't know. Can someone help me please? also, the order is a bit messed up. The first two images should be swapped according...

Can someone help me deconstruct these images a bit? I have no idea. I think the street philosopher has something to do with contextual power and authorial voice? I really don't know. Can someone help me please? also, the order is a bit messed up. The first two images should be swapped according...

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