Answer: The frequency of this light is
.
Explanation:-
To calculate the frequency of light, we use the equation:

where,
= wavelength of the light =

c = speed of light = 
= frequency of light = ?



The frequency of this light is
.
Answer: A physical trait is a defining aspect or feature of your body or other subject that you can see visually.
Explanation:
The correct answer is this one: "holds less dissolved oxygen than cold water" Hot water <span>holds less dissolved oxygen than cold water. The hotter the water is, the lesser oxygen that is being dissolved in that water.</span>
The question is incorrect, nitration of methylbenzoate occurs at 3 position to get, methyl 3-nitrobenzoate.
This is because, in present reaction the reactant i.e. methylbenzoate, has low electron density at m-position.
Due to this, NO2+ prefentially attaches m-position to form methyl 3-nitro benzoate as the product.
A detailed reaction mechanism for formation of product is provided below.