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:
Step-by-step explanation:
The half life is the amount of time it takes a substance to decay to half of its original amount.
Since the radioactive substance has a half life of 1000 years, there will be half of it left after 1000 years.
So, the fraction that will be left after 1000 years is
Answer:
$1
Step-by-step explanation: