Recent content by ZGMF - X20A

O.o So when there is no friction P.E = K.E?

I just want to know in what conditions does mgh = 1/2mv^2 when a guy goes down a slope and in what conditions does mgh =/= 1/2mv^2. Thanks in advance.

I got the ten year series for O levels (examination papers in the past 10 years). It kinda helps. I tried asking my teacher about the heat capacity and latent heat thing and what do you know, I have a better understanding of it! LOL though my teacher doesn't have that much free time. I need one...

It's like when there's an ice cube on the surface of a glass of water. After a while, there will be water around the cube loses temperature and becomes ice. And that's the equation for finding the energy used. And can someone give me ninth-grade/O level difficulty questions on specific heat...

^ Thanks for the reply. There's a problem, sometimes I don't understand why they take this and that steps. You see, in heat capactity and latent heat, there's this equation: E= mc(deltatheta) + ml. Though I don't know why it contains both ml and mcdeltatheta. Explanations please? Thanks.

I tried doing that. Pictures don't really help me. They just kinda tell me what happens in the question. The problem is how to get to the answer. Writing down equations? I've never tried that though. I just jump straight into working xD. Thanks, I'll try that. Hope it works. I'm afraid she has...

Thanks, I'll try that. And it's not that my teacher doesn't solve the questions for me. It's just that her lessons are SO boring that 4/5th of the class gets sleepy everytime and I don't really understand it when she solves equations. Ask her how to study better? I didn't even need to say...

I'm really sorry if it's not in the correct place. I just want to know how you guys study physics so well. I'm in Secondary 3 (ninth grade) and my exams are coming in like..1 week lol. Recently I've been learning about force, energy, power, pressure, speed, velocity, heat capacity and specific...