Can anyone tell me which formulas I'd need for exercise 8 and 10? any help in general would be greatly appreciated.
I know this and will help later on perhaps tomorrow, keep it up though.
https://www.youtube.com/watch?v=7YwBNRuBvjw&list=PL5D99A319E129A5B7&index=5
and
https://www.youtube.com/watch?v=qvcpeA5pBH0&list=PL5D99A319E129A5B7&index=9
https://www.youtube.com/watch?v=DVtyRt0CSSw&index=10&list=PL5D99A319E129A5B7
https://www.youtube.com/watch?v=gycff144mHw&list=PL5D99A319E129A5B7&index=11
This is going though questions, might be useful.
https://www.youtube.com/watch?v=YY6RRheSaR8&list=PLijqQiSMHnP26XvZhMawCk_xh7TLgXZ7P&index=4
>>337059
Ok thanks
>>336773
8.1
speed = length of cycle aka wavelength / time for a cycle to happen aka period
period = 1 / frequency aka cycles per second
>>337137
For 8.1 my answer is 600×10^12 hz