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Hi guys, I wanted to ask for help with this question: Describe how the principle of relativity conflicts with the aether model of light? I pretty much just explained what the principle of relativity is, but can't answer all of the question. Help?

Hello BOS ppl, can anyone help me with these questions. I have really dodgy answers and don't know whether it's satisfactory. 1. Give two reasons why care needs to be taken when collecting water samples for testing. (2) - Take samples of water not near the bank of the water body, as this may...

Hi all, I recently asked one of the nice ladies from the office to see my attendance percentage. And it was awful, my absences and partial absences added to 76.5%. I heard you wouldn't be able to receive your HSC results, if it's below a certain percentage. I'm too afraid to ask my teachers, or...

I read that O2 is more stable than O3, since to decompose oxygen its double bond has to be broken and that requires a lot of energy in comparison to the less energy taken to decompose the single (coordinate covalent bond) in the ozone. Therefore, O3 is less than O2. But, what I don't...

I wanted to ask if any of you people have the slightest idea of what to do after high school? School is nearly ending, and I don't have a dam clue of what I want to do outside school. Has any of you ex HSC students stress out about this problem? Not knowing what you want to do? Btw, if you knew...

I have a question, are alkenes and alkanes neutral and why? Also, is it because of the double bond in alkenes that makes it have a higher boiling point than alkanes?

Can anyone show working out for (a), (b) and (c) I know the pH change for (d) is 0.01 to 1.01

Can anyone help me with these questions, I'm stuck on them 1. What action would result in an increase of TWO pH units of the solution? (a) Diluting 10mL of 0.01mL of 0.01 M HCl(aq) to 40mL (b) Diluting 10mL of 0.01M NaOH(aq) to 40mL (c) Diluting 10mL of 0.01M HCl(aq) to 1000mL (d)...

I was wondering when they give you questions like 1+sintheta = x You would draw the graph of y=1+sintheta and y=x. But how do you find x? You can graphically show the number of solutions these two graphs has but how can you solve it algebraically for the 'x' value of the point of intersection?

Hi, can someone please help me with my homework (1) (2)

Can anyone help me with this complex question please? The complex numbers z = x+iy and w=u+iv are such that w = z+2/z. (a) Express w in the form of u +iv (b) Hence, find and describe the locus of w if z moves along the unit circle. I did (a) already and is stuck on (b). Answer I got for...

Can someone clarify clarify something for me? My teacher said molar heat of combustion must be positive, as it -delta(h), but isnt combustion reactions exothermic, so its enthalpy change is negative..? I have a practical exam, and am confused on what to use? Delta H = -MC(delta.t) or without...