It would be a) 2 electrons
When the distance between the source and the observer is DEcreasing, the observer sees light that has a<em> shorter wavelength</em> than the light actually had when it left the source.
It doesn't matter how the distance between them is decreasing. The source could be moving toward the observer, the observer could be moving toward the source, or they could both be moving in a way that makes the separation between them decrease as time goes on. The result is the same.
(When this is used in Astronomy and Astrophysics, the big trick is: How does the observer know what the wavelength actually WAS when the light left the source ?)
Answer:
Newton is the SI unit used to measure force. It is represented by the symbol N.
HOPE THIS HELPS!!
Answer:
The wavelength is
Explanation:
From the question we are told that
The energy band gap is
Generally the wavelength is mathematically evaluated as
Where h is the Plank constant with a value
c is the speed of light with constant value of
substituting values
Answer:
A. 0.025inches= 1m
So 75in= 0.025*75= 1.88m
B 3.45*10^6yrs= 3.45E6* 365x 86900s
= 1.09*10^8s
C. 62ft/day= 62* 0.3048/86900= 2.1*10^-4
D. 2.2*10^4mi² x ( 1609.3)²
= 6.1*10^7m²