Answer:
Step-by-step explanation:
It's not clear but yeah it's fine if you ask a lot cause everytime I see this I know it's you :)
Answer:
Sorry I did not know your answer
Answer:

Step-by-step explanation:
Given that,
The frequency of x-rays, 
We need to find the wavelength for x-rays. The relation between wavelength, frequency and speed of light is given by :

So, the wavelength for x-rays is
.
Answer:
Am I stupid or is the answer 8?
Step-by-step explanation:
200/25=8