Answer:
For your kind information, read the question thoroughly! 
The bottom is the container part and not the liquid. 
I hope it will be useful. 
 
        
                    
             
        
        
        
Answer:
2Mg + O2 → 2MgO
Explanation:
this is what your looking for
 
        
             
        
        
        
Constructive interference of two coherent waves will occur if the path difference is λ/2.
<h3>Constructive interference:</h3>
When two waves are in phase and their maxima add, a process known as constructive interference occurs where the combined amplitude of the two waves equals the sum of their individual amplitudes.
The resultant wave is created by adding the amplitudes of two waves that are in phase and traveling in the same direction. The waves in this instance are said to have experienced beneficial interference. The upward displacement of the medium is higher than the displacement of the two interfering pulses because upward displacement occurs when the waves experience constructive interference. When the phase difference between the waves is an even multiple of (180°), constructive interference happens.
Learn more about  constructive interference here:
brainly.com/question/17329186
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The smallest unit that makes up matter is an atom!
        
                    
             
        
        
        
Answer:
4.6×10^-7 m or 0.46nm
Explanation:
From 
Wo= hc/λ
Where:
Wo= work function of the metal
h= planks constant
c= speed of light
λ= wavelength
λ= hc/Wo
λ= 6.6×10^-34 × 3×10^8/4.30×10^-19
λ= 4.6×10^-7 m