2 because you would subtract 7 kilometers from 5 kilometers. And you would get 2 as your DP (displacement).
Desert. The desert doesn't get much rainfall and what it does get generally evaporates.
I have no idea can someone help
Answer:
No
Explanation:
In the photoelectric effect,
The number of the electrons which are being emitted is directly proportional to the intensity of the light and is independent on the frequency of the incident radiation of the light which has the frequency greater than the threshold frequency.
Thus, on increasing the frequency of the light which is being shinned on the metal , there is no change in the electrons which are being emitted.