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I didn't use a calculator in the exam, I never do for Physics especially since the angle given was 60 deg in the projectile. And that's stupid walking off after 1 hour... You will have made so many mistakes.

I think it's C though, the work done is the difference between the Ep s. That's a dot point too.

Hi guys, Does anyone know if the textbook is on the CD given with the textbook? If so could someone send this to me? Reason being, I am looking to write solutions for the 3U Cambridge books but I don't have the Year 11 book (I have the Year 12 one) and I don't really wanna spend $70 and buy a...

Nope. But it wouldn't be hard to sneak one in, in my opinion. (Although I do not recommend this)

Why didn't you just follow the god damn instructions and write in pen?

In an electric field the force experienced by the same charges are constant if the field is uniform.

For that Sun, Earth and Moon question... The Moon's force does change if the Earth comes between it and the Sun (it's attracted to the Earth etc), but the attractive force DUE TO THE SUN does NOT change.

It's not really stupid... It was covered in depth in Year 11 and it's in some Independent trials (2004 IIRC). Although I admit, doing Circular Motion in 4U maths did help.

Anna Nyugen :P

It depends on the question. I assure you that you needed to find t0 in this particular question in the HSC exam.

No, you find t0 since from the Earth's frame of reference (ie. tv) it will take the however many years given in the question for the spacecraft to reach its destination, where as the spacecraft measures less time to get to the destination. Such an easy mark or so, I can't believe I had a memory...

Or use S=ut+1/2at^2 and use S=0. or use t=2usinθ / g and use g as the accel.

Yeah, trajectory of a projectile in an electric field is parabolic. In real life projectile motion due to gravity is elliptical since 'g' is not constant. But we treat is as constant in HSC courses. I can't believe that I found tv instead of t0 for the first short answer question!!!

It was more mathematical and more Physics related (ie. no lame "assess" questions) than other years. I liked it :)

lol, real Physics is really maths. The old HSC Physics course was like 95% calculations.

Results for 1st and 2nd quads for this would essentially be the same since it's a boundary angle.

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

What would that additional angle be then? .... There's only one answer as it was a boundary angle. Also adding 2pi to it yields a result outside the given domain. So 0.64 is the only answer.

This thread is over a year old. I have since dropped Japanese at the end of Term 1. Geez people (ie. Lien Lee), can't you READ?

Yeah I had to ask for 2 additional ones. They recommend not doing this for some reason in the HSC.