The expression for the flux through a sphere is
flux = charge/Enot (i.e. epsillon not: a constant)
this shows that flux doesn't vary with radius but with the charge of the points
Answer:
Part a)

Part B)

Explanation:
Part a)
Average power is rate of energy consumption
So it is given as



Part b)
If the efficiency is given as
%
so we know that 20% of total energy consumed is converted into output work
So total power consumed here will be given as


Energy consumed by him



now we know that 1 g fat will release 9 Calories energy
So we have


so to consume 1000 g of fat we need to release total energy

so total number of times


<u>Option (d)</u>
<u>Explanation:</u>
The statement that could be an example of properly written long-term goal is Each week I am going to add .25 miles onto my run so i can reach a total of 5 miles by the end of this month.
It is corresponding to long term portrayed by the statement is, every week if the student is targeting for a goal and aims to complete 0.25 miles on his long run, by the end of the 4th week of the month, he would have achieved 5 miles of his long term target.
<span>The correct option is D) both A and B. In fact, the strength of an electric field produced by a single point charge is given by
</span>

<span>
where Q is the charge that generates the field, k is the Coulomb's constante and r is the distance from the charge source of the field.
From the equation, we see that the strength of the field depends on A) the amount of charge that produced the field (Q) and B) the distance from the charge (r), so the correct option is D.</span>