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Eliminate 't' from each of the following pairs of parametric equations and so form the corresponding Cartesian equation. Make a rough sketch of each curve. x=3cost y=3sint I can make a rough sketch of the curve myself, but how do I get to the corresponding Cartesian equation? Regards

This diagram shows a pulse in a thin string proceeding at uniform speed of 4cms^-1 to the right with amplitude 1.5cm and wavelength 2cm. It is just about to meet with a thicker string in which its speed will be 2cms^-1. At this stage, the pulse will be partially reflected 180 degrees out of...

Draw a diagram on graph paper which represents a transverse wave of amplitude 2cm and frequency 4Hz travelling to the right at 8cm s^-1. Draw one complete wave. On separate diagrams underneath the first draw the same wave 0.25s later, 0.40s later then the original diagram. What would the waves...

My physics teacher I am sad to say isn't teaching me or my class anything. I really haven't learnt anything yet in year 11, and I've been a year 11 student for quite a few weeks now. I would really appreciate it if someone could link me to the year 11 physics preliminary syllabus, and if anyone...

YES! The Marcus Zusak novel :) Death as the narrator is really cool. I think I've decided on it, cool, thanks :D

Haven't read The Importance of Being Earnest, but I plan to. Another idea I have for a text to do for this is, I'm not sure if you've read it and if you haven't you should, but I might do The Book Thief. I'm reading it currently and I usually work better with texts that are still fresh in my...

Mmm yeah. Do you think it would be a good idea to do "The Picture of Dorian Gray"? You know, Oscar Wilde quote, Oscar Wilde book?

"Literature always anticipates life. It does not copy it, but moulds it to its purpose." - Oscar Wilde Discuss the extent to which this statement is true of at least ONE text you have read in the past year. Not asking anyone to do my essay for me, hands off! But I'd like to know how you...

Ohh okay, thanks a lot, I really need the help. Not particularly fond of my teacher's way of doing things so far. Could you please help me with question 2? Edit: Woops, I meant s as in speed, which is ridiculous as displacement=s. My apologies. And in part b, my apologies, another derp. I...

Cheers mate, you're a legend! I got 1a. right, but I did it a bit differently. Can you please tell me if this is err, scientifically correct? a=s/t 9.8=s/3 29.4=s and at this point in time s=v. Is there something wrong with using that? And for b, what I did was sort of the same thing and...

Hello, my teacher has been MIA for the past few days or so and I really need help with some of this work. I don't quite understand it, and I'm not even sure if I'm getting some of these right. I would really appreciate the help, so thank you in advance. 1. A Physics student drops a coin...