The correct answer is
<span>B) UV waves are higher frequency and carry more energy.
In fact, UV waves have higher frequency than visible light. For comparison, visible light has frequency in the range 430-770 THz (</span>

)<span>, while ultraviolets (UV) have frequency higher than these values (at the order of 1 PHz, </span>

).
The energy of electromagnetic radiation is proportional to its frequency, according to the equation

where h is the Planck constant and f is the frequency. We see that the higher the frequency, the greater the energy, so UV waves carry more energy than visible light.
The speed of the wave is 1000 m/s.
Answer:
Explanation:
Speed of a wave will always be equal to the product of wavelength and frequency of the wave.
Since, here the wavelength is given as 10 m and frequency is given as 100 Hz, the multiplication of these two terms will specify the speed of that wave.
Speed = Wavelength × Distance
Speed = 100 × 10 = 1000 m/s.
So, the speed of the wave is 1000 m/s.
Answer is suspension.
Lets define all options.
<h3>Suspension:</h3>
In suspension the solute does not dissolve in liquid. When placed on table for some time, it will settle down at the bottom of the beaker. We can separate particles of solute easily from solvent through filtration.
<h3>Colloid:</h3>
In colloid particles of solute does not dissolve in liquid neither it is settle down. It floats through the solvent. It cannot be separated by filtration.
<h3>Solution:</h3>
In solution the particles of solute dissolve in to the solvent. We cannot identify them as separate. We cannot separate them by filtration. Salt and water solution is an example of it. Evaporation is the technique that is required to separate them.
<h3>Compound:</h3>
In compound, the two elements combine to form a new thing. Resultant/ compound have new or different properties other than its ingredients.
Now, the question was which of the following allow to settle out when sit on a table, so the answer is suspension. Suspension allows the particles to settle out when sit on a tables for some time.
1. 2 C2H6 + 7 O2 = 6 H2O + 4 CO2
I think it’s D but i’m not too sure