u/Guilty-Sherbet-3842

Hey, this may be a dumb qs but i still wanted to ask just in case. I just finished my AS exams and wanted to throw away everything i didnt need so this qs is is mostly for A2 bio,chem,physics students, that will i ever need paper 3 past papers or just any AS past papers or can i throw them all away? (I will be keeping the notes and content that i have ofc)

What was the answer of the ratio of wavelength of X to wavelength of Y?

Hi, im 18F and needed to go to SFO this summer preferably early to mid june. Are there any females (older or younger) traveling as well during this time? My parents arent allowing me to go alone so looking to go with someone. If you are please message me, id really appreciate it.