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yes! got the same. what about the conductor P,Q and R question. Is net force 8 x10^-4 N left

I got 51.91 but not sure why g is 9.8. Is the space station being tested on earth

What was ur answer

How do u do the rotational speed of the space station question. I got 51 or something. Quite sure its wrong though Edit. Is it 102

Quite sure it is constant torque since plane of coil is always parallel to the magnetic field. It cannot be a since the torque doesnt change direction

Thats exactly what i wrote :) You should be fine if you wrote NaOH. Did you write the overall equation?

models of light hasnt been asked in a while. so maybe a long response on photoelectric effect and einstein.

Re: Your Inudstrial Chem answers Pheww... thankss

re: HSC Physics Marathon Archive Lol, subbed numbers into calculator wrong. acceleration is -2.857 and max height 103.2. Is this right?

Re: Your Inudstrial Chem answers for the soap question i wrote: Step 1: The surfactant ion of the soap reorientates itself so that non-polar hydrocarbon tails can interact with non-polar grease molecules via dispersion forces. Step2: Non-polar hydrocarbon tails penetrate the grease and form...

assuming band 6 cut-off is 72/3 id say about 85

Ozone question, microscopic membrane filters

i got a) Barium Shulfate b) Pb2+ + 2Cl- = PbCl2 c) Add sodium hydroxide. Formation of blue precipitate suggests copper ions are present. To confirm dissolve precipitate in excess ammonia; a deep blue complex forms if copper is present. KoshX87 How did u get a precipitate in aqueous state?

only 2. you could also explain it by saying bromine has a greater tendency to oxidise in the presence of chlorine and hence will not reduce.

In the reaction chloride ions are oxidised to chlorine gas and bromine liquids is reduced to bromide ions. Anode: 2Cl(-) ----> Cl2 + 2e- E(oxidation) = -1.36V Cathode: Br2 + 2e- ----> Br- E(reduction) = 1.08V cell potential is -0.28V <0 therefore nonspontanteous

i said acids are used as preservatives since they lower the pH of foods. This inactivates enzymes and kills microorganisms responsible for food spoilage as they are denatured at low pH. Thus the acid increases shelf life of food

re: HSC Physics Marathon Archive identify three properties of superconductors

The Board of Studies has done too much to emphasise this point. :p

Yh, you could tell since she only has 2posts

if you dont believe them and think they're liars whats the point in you asking them. they'll just give you the same response