Tricking Questions you encountered

[kenhung123]

Instead of bashing through 100 practice exams and repeating 100 inelastic and momentum conservation questions that are always the same, I think its a good idea all of us to post some questions you found challenging and discuss.

Personally, I find those electronic questions hard (which I have already posted in recent threads) where you got to find where to place Vout in order to obtain a desired output voltage.

Gravitation is rather hard especially the calculator work. Always forgetting the ^3 or ^2 or root because the numbers are so big. Other than that its pretty straight forward application of formulae. Actually, although I have not came into any in VCAA exams, those that involve fractions are actually quite tricky. Such as find the acceleration if the mass of planet is 1/2 of earth and radius is 1/3 of earth or something.

Motion, I mainly do not understand that 2010 neap lawn mower question...like how is that net force etc...kinda weird..

[ghadz7]

http://www.itute.com/wp-content/uploads/physics_u3_trial_exam_2006.pdf

Question 8

[kenhung123]

Is it just count the square*5*0.1=1/2mv^2?

[ghadz7]

The solution confused me more: http://www.itute.com/wp-content/uploads/phys_trial_exam1_2006_solv2.pdf

[ghadz7]

2008 chemistry was so easy, then 2009 was hard. I have a feeling this years's physics is gona be hard.

[Stroodle]

Yeah. I reckon it's gonna be pretty hard, but that's a good thing for me, cause I always make at least a couple of stupid mistakes.

Probably won't be thinking this on tues though...

[ghadz7]

I did checkpoints and encountered several RMS questions in the amplifier section. Are we required to know that if we didn't do further electronics?

[kenhung123]

I don't think they would throw an RMS in electornics and photonics section as that would place the guys who are doing further electronics at advantage

[Stroodle]

I don't think so. My teacher reckons we should know what rms is, but that we won't get these questions on the exam. Maybe check the study design to make sure though.

[ghadz7]

Sweet, I hope not