Search results

re: HSC Physics Marathon Archive Is that your answer? If so, nope :)

re: HSC Physics Marathon Archive Question: 3 moons, X, Y and Z are in orbit around the same planet. The moons have identical orbital speeds, but masses of M, 9M and 25M respectively. Determine the ratio of their orbital radii and justify your answer.

I have found that past papers are by far the most effective. Of course there are those memorisation dot points, which you just need to be able to spew information back out, but once you are sweet with those dot points, focus on past papers

What he did above but replace Sy = Uyt + ½ayt with Sy = Uyt + ½ayt^2 then t = sqrt (300/4.9) then follow my answer

you forgot to square the t in your equation! Sx = 75 x sqrt(300/4.9) Sx = 586.85m

re: HSC Physics Marathon Archive Right approach, finding both proper time and dilated time, but you have made a boo boo with the t0 when calculating dilated time :) btw, strong first post! :) According to what you have done, A should age ~27 years, but B only ages 20 years. The person who...

re: HSC Physics Marathon Archive Not that simple. :) Show me the working!!

re: HSC Physics Marathon Archive Person A and Person B both fly to a planet which is 25 light years away. Person B flies at 0.8c and Person B flies at 0.6c. When both people arrive, who is older and by how much?

IMO: Conq Chem = not enough info Jacaranda = too much info Take them both, spending half your time on each and by law of averages, you will have it just right

Starting M & G on January 10, 2015. Still space in one of my classes, contact me for more info

As above, focus on the CHANGE in interference pattern which was expected when the device was rotated. Here is a cool flashlet to allow you to visualise the motion of the beams as they split into perpendicular components...

Making me want to start up my old gaming pc and post pics of me with 4 headshots on de_dust !!

:O I still remember playing the original, lmfao.

Hey mate, Nah, I wouldn't like to do that, sorry :( Some of my ex-students do have notes from other tutoring places though, if you would be interested in that, let me know and I will give your their contact details (Matrix, Talent 100 etc...)

1 class for HSC 2016 filled already :smile:

Not afaik There should be one soon though ;)

Whilst I agree with what you are saying, it perhaps is not CRYSTAL clear, by using this logic, you could also say that the induced flux will be greater than the flux from the magnet itself (if the magnet is moved REALLY fast), seeing as the velocity of the magnet relative to the coil is not...

Longer wavelength LEDs require lower voltages, but even red LED's still require ~2V

You, my friend, have broken fizzicks! Are you sure you have connected the LED the correct way? One way they will work, the other they won't

Answer is B. equate F = Ma with F = qE a = qE/m q of alpha = 2x q of proton m of alpha = 4 x m of proton a of alpha = 1/2 a of proton