Vary with the frequency of the light
Do what?? i know how to do a lot of things to answer but there’s nothing to answer.♀️
Answer:
Activation Energy
Explanation:
Effective collisions are those that result in a chemical reaction. In order to produce an effective collision, reactant particles must possess some minimum amount of energy. This energy, used to initiate the reaction, is called the activation energy.
Answer = C
It blows towards the poles from the sub-tropical high pressure areas
1. 
The frequency of a photon is given by:

where
c is the speed of light
is the wavelength
The wavelength of the photon in this problem is

So, the frequency of the photon is

2. 
The energy of a photon is given by

where
h is the Planck constant
f is the frequency of the photon
The frequency of the photon in this problem is

so its energy in Joules is

And since

The energy in eV is
