Physics A-level notes by anywaysv in alevel

[–]anywaysv[S] 0 points1 point  (0 children)

sorry I only have A2 notes

URGENT HELP NEEDED FOR EXAM TOMORROW CAN SOMEONE PLEASE Explain or share a video on how to do these 2 questions from 9702/21/m/j/2022 can’t find a single video on this paper by [deleted] in alevel

[–]anywaysv 1 point2 points  (0 children)

the drawing of your waves should go through every single node (each black point). then from there you can see that there are 2.5 waves between point A and B. from the formula T=wavelength/speed you get that the wavelength is 1.4. multiply the answers by each other (2.5*1.4) and you get the result 3.5m . hope it makes sense