Answer:- Frequency is
.
Solution:- The wavelength of electromagnetic radiation is given as 625 nm and we are asked to calculate the frequency. Frequency is inversely proportional to the wavelength and the formula used to calculate frequency when wavelength is given is:

where,
is frequency, c is speed of light and
is the wavelength.
Value of speed of light is
. We need to convert the given wavelength from nm to m.

So, 
= 
Let's plug in the values in the formula and calculate the frequency:

=
or Hz.
So, the frequency of the electromagnetic wave is
.
Answer:
Thermal energy.
Explanation:
Anytime energy transfers between 2 places or things some of it is 'wasted' as thermal energy (heat). This could be by friction or a change in temperature from a reaction. We say it is wasted because this heat energy serves no purpose.
Answer:
Explanation:
combustion reacts with oxygen
Answer:
The answer is Lyase
Explanation:
Any enzyme that catalyzes the addition or removal of the elements water (hydrogen, oxygen), ammonia (nitrogen, hydrogen), or carbon dioxide (carbon, oxygen) at double bonds, as defined in physiology. Decarboxylases, for example, remove carbon dioxide from amino acids, while dehydrases eliminate water.
I think that it might represent Velocity