the equation of the parabola is given as
. D
<h3>How to find the parabola</h3>
Given the focus(6,2) and the directrix, y = 0
Use the formula
= (y - 0)
Find the square of both sides, square root is removed from the side with it and square added on the other side

Expand the expression and bring all terms to one side
= 
Collect like terms

Make 'y' the subject of the formula

Divide through by 4 and substrate 4 from 40 to give a perfect quadratic equation

Divide factor by 4 to give 1

Simplify the expanded quadratic equation
, we have 
Then insert in place into previous equation

Thus, the equation of the parabola is given as 
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Work is done when a force is applied to an object through a distance. ... The object will either speed up or slow down, resulting in a change in its kinetic energy (seen in Figure 1), or it will have an altered potential energy if, for example, it was lifted a certain height under the force of gravity.Jan 31, 2020
dissociation of proton from the acid depends upon the central atoms's electronegativity
More is the electronegativity of halogen ⇒ more is its pull on the oxygen ⇒ easier will the bond breakage of O-H ⇒ higher the acidity
In terms of E.N :
Cl > Br > I
so HClO₃ is highest acidity with the highest Ka value
A. covalent compounds are the combination of two or more non metals
Sodium is a group 1 element, so it forms a cation with a +1 charge by losing one electron, so it will become Na+