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Hello, my name is Scott. I'm offering tutoring for Maths Adv, Maths Ext-1 and Physics. My ATAR was 98.55 and marks are as below: Ext-1: 95 Ext-2: 91 Physics: 90 I'm currently studying Space Engineering at University of Sydney, I also received a high distinction (85+) for both of my maths...

In the calculation of the velocity or potential energy of LEO and geostationary satellite, with v = √GM/r or U = -GMm/r, many textbook solutions only consider the amplitude of the satellite as r, instead of the sum of Earth orbit and the amplitude. Is this considered as an acceptable solution in...

The diagram below is a roller coaster track, the person riding the rollercoaster is feeling their weight increase and decrease at different points. Which point, A or B is the apparent weight of the rider at the greatest? I choose B but the answer choose A, the reason for the A in the answer...

I posted a thread about Cambridge Maths Extension 2 textbook yesterday, asking if anyone has the worked solution for that textbook, and the thread was gone, deleted on the second day which is today. I receive no notification or any reason why it was deleted. If people going to delete a thread...

As the question, how can I know if the magnetic flux is a positive value or a negative value? I searched that positive flux leaves a closed surface, and negative flux enters a closed surface. If this the case, does this mean the flux below an area would be different from the flux above an area?

How to solve the following question, I did find the method of solving using linear independence, is there any other method to solve this question with vectors? Suppose that OABC is a parallelogram. Let M be the midpoint of OA and let P be the point of intersection of MC and OB. Prove, using...

How to do c) in the following question?

I started 4 unit maths this term and there is a model of calculator that can calculate complex numbers, it is necessary to buy it (fx-100 Au plus) and is it helpful in exams? Because some people said it's quite useless in 4 unit maths.

How should I use my reading time in maths and science exams? Should I start to do the multiple choice questions straight away or should I read through the paper? Can someone gives some tips for using the reading time, it would be very helpful, thanks.