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2) E=qV Electric Field = electrical charge x electrical potential difference

Re: Help Please 1) Solenoid: A solenoid is a coil of insulated wire with a current passing through it. It utilises the principle that current has an associated magnetic field. A solenoid with an iron core inside it, intensifies the magnetic field (electromagnet). Bar Magnet: Permanent...

10 units for me, unless i pick up extension 2 maths.

GPS Go to this link: http://en.wikipedia.org/wiki/GPS#Basic_concept_of_GPS_operation CD Go to this link: http://en.wikipedia.org/wiki/Cd#Physical_details DVD Go to this link: http://en.wikipedia.org/wiki/Dvd The Internet Go to this link: http://en.wikipedia.org/wiki/Internet#Internet_protocols

If a lot of people are getting low marks, i suggest you stick to maths 2unit. Otherwise drop down to general.

I'm not sure, if there is hope. How do others in your class feel about you getting low marks?

Did you make up this question. Charges do not have magnetic fields, they have electric fields.

Basically you just explain how ONE of these things work. Refer to your textbook. :D

Past Papers, too late for anything else. :read: Good Luck!!!! :D

potential difference is another word for VOLTAGE Formula: Voltage (volts)=Current (amperes) x Resistance (ohms) V=IR

I'll give you an example: the effect of Crumple Zones in cars Click this link and go to the graph: http://www.k12.nf.ca/gc/Science/Physics3204/Projects2003/SlotA/ProjectA2/link20.htm

Here's a cool method: distance/displacement ---gradient gives---> speed/velocity ---gradient gives---> acceleration In other words, the gradient of the distance/displacement graph tells the speed /velocity, and the gradient of the speed/velocity graph tells the acceleration

I'm not really sure what you do about the 4 minutes, you'd have to give me the full question. The 2nd question, i don't know.

One coulomb (C) is the charge equal to the total charge on 6.28 x 10^18 electrons. If the charge on 1 electron is -1.6 x 10^-19 Coulombs then the charge on 7.3 x 10^19 electrons is -11.68 Coulombs :cold: This might be wrong. :cold:

All waves operate at the speed of light (i think) velocity(m/s)=frequency(Hz) x wavelength(m) wavelength(m)=velocity(m/s)/frequency (Hz) wavelength (m)=(3.6 x 10^8) / (104.9 MHz x 1000 kHz x 1000 Hz) wavelength(m)= 3.43 metres somebody please verify!

How about 4 techniques for prescribed text and 2 techniques each for the ORT's?

1) Equation of Circle: (x+1)^2 + (y-3)^2 = 25 ...1 Equation of line: 3x-y+1=0 ...2 Rearrange 2 for y y=3x+1 ...3 SUB 3 into 1 (x+1)^2 + ((3x+1)-3)^2 = 25 x^2 + 2x+1 + 9x^2 - 12x +4 =25 10x^2 -10x -20=0 x^2 -x-2=0 (x-2)(x+1)=0 x=2 or x=-1...

Section III: In your essay you are to write about your prescribed text and 2 of your own ORT's. Is it okay to talk about 5 techniques from your prescribed text and 3 techniques each from your ORT's ?

I wouldn't memorise essays. Once you get into the exam, you get a total blank, and then YOU CAN"T WRITE ANYTHING!!!!! :uhoh:

Mathematics Extension 1 (possibly 2) :read: Mathematics :cool: Physics :D English Advanced :hammer: Studies of Religion 1 :sleep: Software Design and Development :spam: or Chemistry :angry: ?