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P & Q are points on the parabola x^2 = 4ay with parameter value t= 1 and t=2. Show that the normals to the parabola Q and P intersect at a point R on the parabola. Thanks in advance.

· Explain how water’s ability to absorb heat is used to measure energy changes in chemical reactions Does anyone have decent notes on this? I have done it but I am lacking info. Thanks in advance. · • Identify that nuclei, mitochondria and chloroplasts contain DNA...

In how many ways can 5 men and 5 women by arranged in a circle so that the men are separated? In how many ways can this be done if two particular women must not be next to a particular man? I did this question and I got them all right. But I want to know what the model working out would look...

A dental inspector finds that about 20% of children of a certain area have tooth decay. What is the probablity that out of 6 children examined, only the first, third and fifth will have tooth decay? I got 0.2 x 0.8 x 0.2 x 0.8 x 0.2 x 0.8 = 64/15625. What's the problem with my working out? The...

This is the last question from the Fitzpatrick 3 Unit book on Projectile Motion. This question sounds really simple but I don't know what to substitute and what formula to use. I already used the cartesian equation and the maximum height formula but they don't seem to work. Here we go...

What are the tips that you know in regards to speech task? I have heard that I am going to get a speech task soon but I don't really know the topic yet. But that's not the point that matters at the moment. I am talking about the performance in general. I am quite confident that I will write...

A shell is fired at 200 metres/second to strike a target 2 km away. At what angle should it be fired? This question looks so simple and easy but it is a bit weird. What I did was: V = 0.2 and the coordinate is (2,0) I used the equation of the path to find the angle but I failed. Part of...

The displacement x at time t of a point moving in a straight line is given by x = a sin(nt + @). Find the form which this expression takes if initially (a) v = 0 and x = -5 (b) x = 0 and the velocity is negative. Thanks for the help, have not revised this for such a long time.

Preparing for English exam is one of the most difficult & frustrated chore that I have to go through every term. I know exactly what & how to study for subjects like Mathematics, Biology and Chemistry but I don't exactly know how to study for English apart from writing practice essays and...

WARNING: THIS IS A NON-SPAMMING THREAD. Post here for advices not to put down someone who needs help. My question is: How do you write/type notes? What are your styles when it comes to writing/typing notes? I have already typed mines but I realised that they are too detailed. On top of...

Q 4 on pg 129, Fitzpatrick 3 Unit book. I am struggling how to get the answer. This is the question: A body, initially at room temperature 20 degrees Celsius, is heated so that its temperature would rise by 5 degrees Celsius/min if no cooling took place. Cooling does occur in accordance...

Fitzpatrick 3 Unit textbook Q40, page 209: Find the value of r if the coefficients of the rth term from the beginning and the rth term from the end of (2x+3)^15 are in the ratio 8:27. I think I approached this question correctly (using the simulatenous in the end but cannot get the...

What are the subject opportunities for Year 11 students next year? (i.e. when are are in Year 12) apart from Distinction Courses? Are there subjects that begin from HSC year?

Hello, I think I would appreciate some advices on how to write a good short response. Reading over my past exams, I suddently realised that I spend too much time writing over the given spaces. Every single quetion went over at least 2 or 3 lines. I still got good marks but I would want some...

I shall express my apologies in regards to my constant whinging. However, I would like to get this over and dealt with. As they say, scaling is the last thing to consider when it comes to subject selection. However, I have to make a strategic move in regards to this to revive my HSC plan...

How do you start your essay introduction? What can be an effective way to grab the teachers' attention. I always struggle with the introduction part of the essay. Apart from it, I can flow from one sentence to another quite well. My task is to produce a critical analysis of the collage that I...

Research focus question: Is there a prioritty of hierarchy in Jewish ethics? If so, account for such ordering What are the Jewish ethical teaching regarding social justice?Can anyone help me with this? I will greatly appreciate any comment. :uhhuh: :uhhuh: :uhhuh: I will LOVE anyone who...

In my point of view, English should remain a compulsory subject for HSC as English is a crucial subject where we can gain valuable knowledge that may prove useful for our future career. However, I do not think that English must be counted towards our UAI. It just seems unfair for people whose...

Does anyone know any related material (i.e. book, cartoon, TV show) that deals witht the themes of control, power & manipulation???

Year 11 (Preliminary year) is more stressful than Year 12 (HSC year). What is your opinion in regards to the above statement? And please state your reasons.