Helped us in modern days do to his contribution to the study of motion back in the day is what helpes us know how to study motion.
Answer:
Explanation:
The energy of a photon is given by:
where
is the Planck constant
is the frequency of the photon
Substituting the numbers into the equation, we find:
Explanation:
By Hooke's Law,
F=kx
The only force acting here is weight, and x is the extension of the string (you need to convert this to mm) so
mg=kx
(0.15)(9.81)=k ((420-300)x10^-3)
Then just solve this equation.
