Recent content by askit

Let u = sin^(2n-1)x, dv/dx = sinx, then when u do integration by parts u should get something like sin^(2n-2)x multiplied by cos^2x = 1- sin^2x

Would you do a table of values for most ugly 3d vector graphs like these, cause I can't really find another efficent way to go about it. I just feel like in the exam a table of values would take way to long to do accurately

Where do you get the intuition to make x=sint and y=cost for clockwise circles?

Yea eng has me dying rn I need all my essays done and memorised in time for like week 6-7 + chem/phys mod 8 which is a drag

When does everyone finish content for hsc? My school finishes term 2 week 5 which has got me cramming so hard rn

yea thats mb im tripping rn haha - I think the difference in velocity is squared not the difference of them squared

From what I've seen so far, yea its good enough to just talk about E=hf, f increases, E increases thus probability decreases, but I really don't like how HSC physics is structured that way. I keep getting confused because half the time it just wants me to accept things :(

Thankyou so much for your response, I've got a few questions from your explanation Every oscillator can spend this energy "budget" in a mode that has a particular frequency or wavelength, and there are no excluded values - given that on average they all have kT energy ie. all oscillators have...

Hey guys, could anyone explain to me how classical theory of light assuming that every oscillator having the same kinetic energy at a given temperature is an incorrect assumption leads to the ultraviolet catastrophe. Also, I get how quantising energy abides by the law of conservation of energy...

Hey guys, is it worth writing notes for e2?

Bit confused with this, if hydroxide reacts with the weak acid CH3CH2COOH, wouldn't that decrease concentration of weak acid, thus resulting in equilibrium shifting left. Or has the consumption of H+ and partial consumption of CH3CH2COOH still result in a shift to the right/

I'm sort of getting it, so we look at the oxidation states in a given compound, find the one furtherst away and then that part oxidises/reduces. So in this question, Iron (II) sulfate was made up in a 250 mL solution. 25 mL of this solution was titrated against 0.020 mol L-1 potassium(VII)...

Theres been this part of calculations that I never understood. Say this question, a solution of iorn (II) hydroxide has a pH of 9.42. Calculate the solubility, in g/L of iorn (II) hydroxide in this solution. You find [OH-] = 10^-4.58, since Fe(OH)2 --> Fe2+ + 2OH-, why can't we just half the...

So you base which one oxidises/reduces off their standard reduction potentials? How did you know this: H2O2 ------> O2 + 2H+ + 2e- I can't find it on the HSC chemistry datasheet. Also, idk if this is a dumb question but how do you know what part of the compound to choose, like you only took into...

Hey guys, I'm so lost on how to do redox reactions. We did em in year 11 and I completely forgot. Say for this titration q: 25 mL of hydrogen peroxide was made up to 250 mL with water, from this solution 25 mL was titrated against 23.45 mL of 0.0200 mol L-1 potassium permanganate solution...