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What did u guys get for this question? I got pH (HCl) = 0.632 Dunno if it's right :S

I think you mean 20, but the answer is definitely B. If you calculate the wavelength of EMR required to produce 0.03eV of energy, you end up finding it to be 41µm, which is way off the scale of the Typical Human BBR Curve. To generate 0.17eV on the other hand, you need a wavelength of 11µm...

I think all your answers are right, except 20 (B). 19 is indeed D because a high AC voltage means greater change in flux (more eddy currents), and high electrical resistance in the pot base means greater heat developed (as P= I^2R).

The flux is initially maximum, but the graphs represent current and time, not flux.

The graph of flux will start at maximum (ie a cos wave [can be cos or -cos]) due to its initial position in the field. To calculate EMF we use EMF = - N d(phi)/dt, so it is the negative derivative of the flux graph. This will result in either a sin or a -sin graph for EMF. I'm not sure how to...

WHAT a HERO!

mi madre es espanola y mi padre es de brasil. cuando es el examen de espanol?

Who are you?

This is such a perfect response!

Como estas hermano? son originalmente espanoles?

You are my hero <3 You speak (lol type) with such confidence.

What subjects will you be tutoring? It will be my great honour to be tutored by the great, and almighty deswa1 ! :O

yeah brah

I LOVE THIS SONg!

i think you got 19 wrong

put in the hard work guys, not long left ! xD

I thought the paper wasn't that bad, hopefully 8/8 for the big marker. What did you guys think of the last question?

what a noob