Answer:
K2O2 and KO2 is the answer
Answer:
Mechanical waves are waves that require a medium. This means that they have to have some sort of matter to travel through. These waves travel when molecules in the medium collide with each other passing on energy.
Answer:
A hypothesis is an idea or explanation that you then test through study and experimentation.
Explanation:
It is known that relation between wavelength and frequency is as follows.
![\lambda = \frac{c}{\nu}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7Bc%7D%7B%5Cnu%7D)
where,
= wavelength
c = speed of light = ![3 \times 10^{8} m/s](https://tex.z-dn.net/?f=3%20%5Ctimes%2010%5E%7B8%7D%20m%2Fs)
[/tex]\nu[/tex] = frequency
It is given that frequency is
. Hence, putting this value into the above formula and calculate the wavelength as follows.
![\lambda = \frac{c}{\nu}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7Bc%7D%7B%5Cnu%7D)
![\lambda = \frac{3 \times 10^{8} m/s}{7.2 \times 10^{11} s^{-1}}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7B3%20%5Ctimes%2010%5E%7B8%7D%20m%2Fs%7D%7B7.2%20%5Ctimes%2010%5E%7B11%7D%20s%5E%7B-1%7D%7D)
= ![0.416 \times 10^{-3} m](https://tex.z-dn.net/?f=0.416%20%5Ctimes%2010%5E%7B-3%7D%20m)
or, = ![4.16 \times 10^{-4} m](https://tex.z-dn.net/?f=4.16%20%5Ctimes%2010%5E%7B-4%7D%20m)
Thus, we can conclude that wavelength of given radiation is
.