Answer: B. CO
Explanation:
Diatomic molecules are those that are formed by two atoms of the same chemical element (homonuclear diatomic molecule) or different chemical element (heteronuclear diatomic molecule).  
In this sense, oxygen is a homonuclear diatomic molecule because it is formed by two atoms of the same element ( ) and Carbon monoxide (
) and Carbon monoxide ( ) is heteronuclear diatomic molecule.
) is heteronuclear diatomic molecule.
Sodium Chloride  is not a diatomic molecule because is a product of ionization, but it can be diatomic in its gas phase with a polar covalent bond.
 is not a diatomic molecule because is a product of ionization, but it can be diatomic in its gas phase with a polar covalent bond.
 
        
             
        
        
        
Answer:
bottle might burst
Explanation:
because liquid inside will expand and exert pressure on walls of the bottle. 
 
        
             
        
        
        
In refraction, when a wave travels from one medium to another it changes speed.
Correct option is A.
        
                    
             
        
        
        
Answers:(a) 
μT
(b) 
μm
(c) f = 
 Explanation:
Explanation:Given electric field(in y direction) equation:

(a) The amplitude of electric field is 

. Hence
The amplitude of magnetic field oscillations is 

Where c = speed of light
Therefore,

μT (Where T is in seconds--signifies the oscillations)
(b) To find the wavelength use:



μm
(c) Since c = fλ
=> f = c/λ
Now plug-in the values
f = (3*10^8)/(0.4488*10^-6)
f = 
