Energy is carried to Earth in a form of photons or simple radiation.
Answer:
Explanation:
From the question we are told that
The number of slits per cm is k =
The order of the maxima is n = 1
The wavelength are
The spacing between the slit is mathematically represented as
=>
=>
Generally the condition for constructive interference is
At
At
A) Volume = displacement
Therefore the rock has a volume of 10mL
B) density = Mass/ Volume
Therefore density = 23/10 = 2.3 per unit volume
Check the attached file for the answer.
A. Units
the rest can be understand that he did not clarify