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So a shuttle is decelerating at a rate of 50m/s. Travelling towards the Earth. A dude is 90kg in the shuttle, what is the force of the seat on the dude? Taking into consideration of the deceleration and gravitational force of the guy. Questions very confusing, if anyone wants the answer, just...

How would you go about solving part b of this question? (a) If z = cis.(theta), prove that z^n + z^-n = 2cos (n.theta) (b) Hence express (z+z^-1)^4 in the form A.cos(4.theta) + B.cos(2.theta) + C For part B I got up to: (z+z^-1)^4 = (2cos(theta))^4 (From part a) = (16cos(4.theta)) ....

Can someone help me with this please, I don't have any solutions

Can anyone help me with this? How many moles of aluminium ions and sulfate ions are there when 34.2g of aluminium sulfate is dissolved in 500mL of water?

I'm doing a practice exam and I'm unsure of my solutions, would anyone care to provide their solutions? 16. A student analysed a sample of Bondi beach sand and found it contained 5.2%, 11.3% sodium chloride with the balance being silicon dioxide. Calculate the mass of silicon dioxide in a 135g...

1. The cubic equation x^3 + ax^2 + bx + c = 0 has roots -(alpha), alpha, 1/alpha (i) Show that ac = -1 (ii) Show that b + c^2 = 0

1. Express tan(A+B) in terms of tanA and tanB 2. Hence show if A, B and C are the vertex angles of a triangle then tan A + tan B + tan C = tanA x tanB x tanC

Can anyone do this question (it's a last question in the exam). Question: Answer: I'd be grateful if anyone can help me, I think I can find what C1 is but having troubles finding C2

Question is: Aluminium oxide can decomposed by electrolysis. If 5kg of aluminium oxide yields 2.65kg of aluminium on electrolysis. Calculate the percentage composition of aluminium oxide.

Just asking for suggestions on things I should know how to do for my upcoming exam. (Pls don't refer me back to the syllabus lol), what's the hardest thing about Metals theory-wise, I'm pretty solid with calculations.

Hello, does anyone know how to solve this? If tan (theta/2) = t solve for t in the equation 12tan(theta) = 5 and 180 degrees < theta < 270 degrees. So I solved for t in the equation by subbing in t into 12 (2t/1-t^2) = 5. Solved it, and got two roots: t=1/5 and t=-5 How do I...

What are some way you guys remember your stuff? Is it reading your notes 30 minutes before you sleep? Or asking questions to your notes, in order to understand further? List some of the ways!

Hey guys! It would really be great if you guys helped me out with a few questions that I can't do. If you're helping me, please show working out so I know how to get there! Thanks! The questions are : 1. If z is a complex number where neither Re(z) or Im(z) is zero and it is given that...

What was the effect of Pauline Hanson and One Nation on Australia? How did it influence Australia to change it's ways, and in what ways were Australia changed? Was it the views on politics, immigration etc.

Could anyone who went to these tuitions tell me what it is like? And how their teacher was qualified? I heard Dr Balan from Homebush teaches Chemistry, pretty good but I don't have his contact information. If anyone has it, could you please leave a reply with it! Ty :) Also, do Matrix...

Could anyone help me with some interesting Character personalities? Or how to build a character? Also, I need a creative narrative idea. Does anyone have good suggestions?

Will Ext 2 push me my skills further in Extension 1? And how does the subjects differ?

Hello, I'm picking Biology, Physics and Chemistry. Can I cope? I don't know my abilities. It's the only subjects, I like. Tell me what it is about?