Answer:
Wave length = speed / frequency
Wave length = 3x10^8 / 4.11x10^4
Wave length = 7.299x10^3nm
Step-by-step explanation:
0 hundreds<span> is equal to 9000. To find the number of 10's in 9000, simply divide them 9000/10 = 900. Comments; Report</span>
It's C ray AC because it's the same length just opposite
Answer:t= 9
Step-by-step explanation: 10t =90
divide 10 on both sides
so 10t /10 and 90/10
which means t=9