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coolies. thanks.

well according to what speed2 just said, it seems quite pertinent. what is the correct answer anyway for this question?

what do u mean overcomplicating... i was just saying that the question didn't specify whether the current was induced like in a generator or whether it was provided by a supply emf like in a motor.... read the question for urself. you can have totally opposite answers depending on which...

Question Incomplete! the question is not complete: The rod AB is moving upwards through the magnetic field B going into the page as shown. Which end of the rod is negative? -------------------------------------------------------------------------------------------------------- is the rod...

first dotpoint 1.1.1 discuss the effect on the magnitude of the force on a current-carrying conductor of variations in: - the strength of the magnetic field in which it is located - the magnitude of the current in the conductor - the length of the conductor in the external magnetic field -...

first dotpoint ppl, hello? not straight into back emf! :rolleyes:

so his analysis was basically that projectile motion was parabolic, and composed of two components? so do i ignore what it says in one book where Galileo's analysis is represented as: "He stated his theory that all objects fall at the same rate, neglecting air resistance. he did this by...

can someone pls explain what galileo's analysis of projectile motion was... different books say diff things. some say that he proved different mass objects fall at the same rate --> what does that have to do with projectile motion as such?

great work HSC_sUcKsSsS! you deserve a good night's rest. :D

let: A = 2a-b B = 2b-c C = 2c-a then A+B+C = a+b+c = 0 then to prove: A^3 + B^3 + C^3 = 3ABC since A+B+C = 0 thus cubing both sides, (A+B+C)^3 = 0 A^3 + 3BA^2 + 3AB^2 + B^3 + 3CA^2 + 6ABC + 3CB^2 + 3AC^2 + 3BC^2 + C^3 = 0 so A^3+ B^3 + C^3 = -(3BA^2 + 3AB^2 + 3CA^2 + 6ABC +...

coolies. thanks for your help everyone. some of the stuff there is really unique and insightful... very hard to find info like that hollaback girl, i meant do i write the assess bit separately from advantages/disadvantages, not do i write advantages separate from disadvantages lol... i...

trust urself :)

what do you mean? sorting out the right hand side should give you 3ABC.

is this efficient? i found the question quite tough... but managed to get it finally. dont know if its very efficient tho. let: A = 2a-b B = 2b-c C = 2c-a then A+B+C = a+b+c = 0 to prove: A^3 + B^3 + C^3 = 3ABC since A+B+C = 0 thus cubing both sides, (A+B+C)^3 = 0 expand and...

hi guys, i am having a bit of strife with ideas on ethanol. here are some points of confusion 1) evaluate the success of current usage of ethanol. how should we go about answering this question (supposing it wasa one) 2)assess the potential of ethanol as an alternative fuel and discuss...

no probs, thanks :D

u mean 95 as your scaled mark right? or do you mean raw?

i see what u mean malkin86 but isnt it a bit contradictory to say that they form strong bonds and can separate easily? a bit confused about that still...

hi guys, confusion: isnt hybridisation mixing of two different strained organisms i.e. two different species, say from the same genus e.g. horse and donkey... but the syllabus mentions "process information from secondary sources to describe an example of hybridisation within a species and...