Anyone got a prediction on the 6 marker? They've concentrated on Waves and Materials. Have they ever asked for Mechanics? If they have, which paper?
There was one about energy transfer in a trampoline, but I'm pretty sure that's about as far into mechanics as a 6 marker would go. The 6 markers are always on like theory.
The last couple of questions were difficult. Just understanding it was impossible. Turns out some generic answers get you marks eg. It's at a maximum, even though they stated it was.
quick question.. do we need to know how to derive each one of the suvat (equations of motions)? if a derivation comes up im screwed :/ good luck people btw
quick question.. do we need to know how to derive each one of the suvat (equations of motions)? if a derivation comes up im screwed :/ good luck people btw
No don't think so as you get given them all I know I've never seen a question asking you to do so.
Question 3 on june 2011 I thought was implying the acceleration was changing and obviously suvat equations are for constant acceleration but the mark scheme says to use suvat? Anyone explain to me why? . Also why do you can't you use nllambda=dsintheta for double slit diffraction to find the wavelength of a laser?
Ive got a question on January 2011, q1b)i) asking how to derive the equation for energy stored from a force against extension graph? How would i do that? Thank you in advance
Question 3 on june 2011 I thought was implying the acceleration was changing and obviously suvat equations are for constant acceleration but the mark scheme says to use suvat? Anyone explain to me why? . Also why do you can't you use nllambda=dsintheta for double slit diffraction to find the wavelength of a laser?
Ive got a question on January 2011, q1b)i) asking how to derive the equation for energy stored from a force against extension graph? How would i do that? Thank you in advance
State that the area equal to the energy stored & this is the same as the work done to get the spring to store that elastic energy. Then show that the area of the triangle is 1/2 x base x height so 1/2 axis multiplied by x & y axis
Ive got a question on January 2011, q1b)i) asking how to derive the equation for energy stored from a force against extension graph? How would i do that? Thank you in advance
The work done is shown by the area under the graph, and all of the work which is done on the spring will be stored as energy. The area under the graph is given by (1/2)*base*height so you can derive the equation using this...
w=lamda x d / s ^^ is the one you use for double slit... the one you quoted is for single slit, just remember that
Also they clearly said in the question they want you to find the average acceleration
State that the area equal to the energy stored & this is the same as the work done to get the spring to store that elastic energy. Then show that the area of the triangle is 1/2 x base x height so 1/2 axis multiplied by x & y axis
I found the acceleration fine but on part aiii when it asks you to calculate the distance I did v=changeind/changeint but I'm not sure why I'd get different answers? Sorry if I'm being stupid here! But thank you for the second part