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NO2 is produced from high-temp combustion: N2 + O2 -> 2NO nitric oxide reacts with atmospheric oxygen: 2NO + O2 -> 2NO2 This is localised pollution. NO2 causes photochemical smog: NO2 -uv-> NO + O O + O2 -> O3 O3 is a radical, irritating the respiratory system, and also can react...

g force = (g + a)/9.8 where a is the upward acceleration. Lets dodgily suppose that the roller coaster moves towards the right at a constant velocity. So the curve PQRS is like a graph: the horizontal axis being time, and the vertical axis being displacement. Differentiating this curve...

oooh...a mystery person. How exciting...

Sourie, is that all you can come up with? it's getting boring...

anyways my guess as to what we have to write for that question: * a continuous distribution of energies * always less than 1.16 MeV (because of conservation of energy: beta energy <= mass defect) * explained by Pauli's neutrino: energy of mass defect "shared" by ejection of both neutrino...

Well, the reason for the peak is out of our syllabus. If you really wanna know: http://230nsc1.phy-astr.gsu.edu/hbase/quantum/fermi2.html PS: i've nfi about what it all means...dun ask me. I just wrote: "it can be worked out by mathematics developed by Fermi.." Wrong? then no one'll get...

Phys teachers at ruse are NOTORIOUS at getting things wrong. Therefore 5 is D. Besides, orbital radius is distance from the star: the radius of the orbit of the planet!? So if orbital radius is doubled, orbital period must increase, so either C or D. and u calculate it to be D

i agree with AlexZ

Well, cooling will have the effect of liquifying the ammonia, removing some of it from the gaseous phase. So the pressure of gaseous ammonia will decrease, which will shift equilibrium towards the right. They won't just add nitrogen, because they'll end up with an excess of it, which isn't...

no worries maybe u should find a tutor, at least for a few months to brush up on some basics...

which is why I sometimes like to refer to this subject as "physics", not real physics, just "physics" in quotations...

watch ur attitude... btw kaseita, magnitudes are always positive

(1) is correct

Ditto... Say the question is worth 7 marks. Write 7-9 of the most important things that you think would fetch one of the marks. This includes definition, 2 advantages/disadvantages, "current development" - limitations of technology on the efficiency of the process, and need for future...

Just the equations: a) Use y = ut + 1/2at^2 Consider vertical motion, of course b) Use v^2 = u^2 + 2ay v here is only vertical. So you must calculate total velocity, using vector addition of hroizontal and vertical acceleration

Astronauts are "weightless", because they don't experience a reaction force from their surroundings. The spacecraft is accelerating at the same rate as the astronaut, so there are no mutual forces between the two. Like, when you read this, you feel a weight because you're sitting on a chair...

around 96 if feeling good on the day... a bit less if not... I did crap at trials, not really sure how much more i've studied so far... I'm good at calculations, just not good at giving them the society BS...and when calc's constitute 15%, it's not very good... PS: don't quote me for...

get the people here to explain anything you don't understand?

Umm,...i doubt it. Just learn that there are six quarks, six leptons, the properties of quarks and leptons, what mesons and baryons are, and what protons and neutrons are made of. You might wanna learn a bit about force particles (photon, intermediate-vector bosons W+, W-, Z (i think)...

According to Lenz's Law or Faraday's Law of Electromagnetic induction, there will always be an induced emf when a conductor is exposed to a changing magnetic field, and when there is a circuit or path for charge to flow (e.g. laminations restrict paths), there will be an induced current; eddy...