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The wine glass bowl may be modelled by the following .y=cosec(x/2)-b (0<x<2*), (0<y<5) 1. Find a and b given that the points are on the curve and substitute them into the model function. 2. Show that the function in part 1 is symmetric about x = π. (Use , for symmetry about x = a) 3. Draw...

Thanks:ninja:

I don't whether this is the right section as I'm in SA doing the SACE and our general headings are quite vague. We don't have any access to forums like these (God! We are so backwards here!). So any help would be appreciated immensely.:) When 3 g of the rocket-fuel dimethyl-hydrazine...

When you incorporate Chemistry into English lessons. For example, when my teacher was discussing 'The Great Gatsby' and talks about Gatbsy being a bootlegger, I started to work out equations for the hydrolsis of poly- and di- saccharides as well as for the fermentation of glucose. I then drew...

Thankyou so much :)

I'm not sure if Linear Equations are part of the Ext.2 course but I would appreciate it if anyone in this forum could help me with the following questions. 1. Ernst Macdonald had a farm with cows and chickens. His animals had a total of 42 heads and 124 legs. Write down a system of linear...

Thankyou so much. That has helped me immensly. :) :wave: You have saved my life. I was ready to go and get a razorblade.

Thanks :) .

Hi, I am having some problems with some polynomials questions which I was absent for when they were covered :confused::burn: :eek: and now my teacher has been away ill and hence, has been unable to help me. If anyone could help me I would greatly appreciate it. :) 1. Find real numbers a and...

And if I was to work out θ by substuting the value of k into the previous equations, i would work it out using radians wouldnt I?

:wave: Thankyou so much :) .

Hi. I am a South Australian student currently doing my SACE Certificate. I don't know how similar our advanced maths courses are but hopefully someone here can help me. I am doing a project where I have gotten to a certain point in the second question and I can't get any further. The question...

Does anyone know of any good websites which provide the relevant physics of a DVD burner/writer. I've been looking for ages but it all seems to be technical specs which have no relevance (ie. writing speed etc) Any help would be greatly appreciated.

My maths teacher says the following: I'm not a geek, I'm just cooly challenged. I had to learn to run fast in high school, a lot of people were jealous of my maths ability. I'm gonna bust a battery in yo calculator. Friday night! Maths Party! BYO Red Cordial and Graphics Calculator...

Thankyou so much.

Any help with the following question would be greatly appreciated. Calculate the enthalpy of formation of hydrated magnesium chloride solid. Mg + Cl2 + +6H2 +3O2 -----> MgCl2.6H2O The following information is needed to calculate the answer. H2 +Cl2 +aq --------> 2HCl...

I know the basics about flame colour for Sodium metal when heated on its own but I am wondering if there is any difference in the explanation when its a Sodium compound eg. (NaCl).

Hi I need help with the following questions: 1. What two purposes does a bleach serve when it is used in the laundry? (I have only got that the bleach decolourises stains to a colourless substance via the oxidising action of the hypochlorite ion) 2. The formulation used in an automatic...

Hi I need help with the following questions: 1. What two purposes does a bleach serve when it is used in the laundry? (I have only got that the bleach decolourises stains to a colourless substance via the oxidising action of the hypochlorite ion) 2. The formulation used in an automatic...