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Anyone go today, how was it?

This series question: Find limiting sum??? 1/5 + 2/5^2 + 3/5^3 + 4/5^4

Given Acetic Acid (CH3COOH) has a density of 1.05g/mL and molecular weight of 60.052g. What is its concentration?

Half way through this topic at school & it seems a lot harder than all the other topics. Is MECHANICS the hardest topic in 4u course?

94-96

Is the pipette 25.0 mL or 25.00 mL Or does it depend on interpretation so they would both be deemed correct?

HELP PLEASE? SHM: A particle moves in simple harmonic motion with acceleration a=-49x and initially the particle is 1m to the right of the origin. a) Find the period of the motion b) Find the maximum speed of the particle c) Find the times when the displacement is 0.5m Answers: a)2pi/7 b)7m/s...

Post around your half yearly results & topics of test: 60/80 (75%) Complex Numbers Graphs Conics Integration What would this scale to? School Rank - 150 My Rank - 1/5

75% in 4u Maths 72% in Physics ?? I mean aligning eg. these are raw marks

We have so far completed: Complex Numbers Graphs Conics Integration So we still have Volumes, Polynomials, Mechanics and harder 3u. If it took us 2 terms to do the first 4, how long will it takes us to do the next 4?

is it better to do them under exam conditions and rush them or do them at your own pace to undertsand the concepts?

How many is enough to succeed and obtain a band 6. Note - this mainly regarding chem/phy/3u & 4u maths. My teachers seems to think around 50 throughout the whole years for 3 & 4u. 10 past papers before 1/2 yearly (other schools trials) 20 CSSA 20 HSC And for Chem Phy - around 20-30...

Only for writing notes not actual study eg.past exams.

Is 2NaOH the same as 2Na(OH)2

Do you just swap the y & x then make y the subject?

Yes

That makes sense, but could this question be done graphically as well: graphing cos2x & sinx on the same axes in the domain 0<x<360

Find Inverse: (2)/(3x+6)-1

Explain?

5 How many solutions does the equation cos 2θ= sinθ have in the domain 0 ≤ θ ≤ 360? (A) 2 (B) 3 (C) 4 (D) 5