Hey all physics students < look here> (1 Viewer)

[Imagination]

Hey does anyone have answers to question 26 C, 24 B and 21 C, in the 2007 physics HSC, i have looked all over the internet and couldent find the solutions, and board of studies notes didint contain them

please if you could help it would be much appreciated

thanks a million ,
imagination

 

[the-derivative]

Hey does anyone have answers to question 26 C, 24 B and 21 C, in the 2007 physics HSC, i have looked all over the internet and couldent find the solutions, and board of studies notes didint contain them

please if you could help it would be much appreciated

thanks a million ,
imagination

These are from my attempts at the question, I don't know if they're correct or not though.

Q26. c - I got 1.38 x 10^8J
Q24. b - I got 1167 NC^-1 up
Q21. c - I got 196 loops

I got my physics teacher to mark it though, so they should be correct.

BTW - wrong section.

 

[cutemouse]

Yeah there's this book called "SuccessOne", and there's a reason why people buy it

 

[Imagination]

thanks a billion derivative for you promt answering to my question, your the best

 

[gabgab]

These are from my attempts at the question, I don't know if they're correct or not though.

Q26. c - I got 1.38 x 10^8J
Q24. b - I got 1167 NC^-1 up
Q21. c - I got 196 loops

I got my physics teacher to mark it though, so they should be correct.

BTW - wrong section.

yeah, the book says they are right... you can have faith in your physics teacher!

 

[Raysian]

These are from my attempts at the question, I don't know if they're correct or not though.

Q26. c - I got 1.38 x 10^8J
Q24. b - I got 1167 NC^-1 up
Q21. c - I got 196 loops

I got my physics teacher to mark it though, so they should be correct.

BTW - wrong section.

How did you work out 26 c)?

 

[the-derivative]

How did you work out 26 c)?

Use P = VI to calculate the Power In and Power Out

i.e. Pin = (6x10^3) x 10 = 6 x 10^4; P out = 240 x 230 = 5.52x10^4

Minus the powers and you get the power loss to be 4800W.

Then using E = VIT, you know VI = 4800 and time is 8 hrs

So E = 4800 x (8x60x60) = 1.382x10^8

 

[Raysian]

Use P = VI to calculate the Power In and Power Out

i.e. Pin = (6x10^3) x 10 = 6 x 10^4; P out = 240 x 230 = 5.52x10^4

Minus the powers and you get the power loss to be 4800W.

Then using E = VIT, you know VI = 4800 and time is 8 hrs

So E = 4800 x (8x60x60) = 1.382x10^8

Thanks a bunch. (Y)