What imaginary line marks the southern end of the tropical zone
2 answers:
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Speed of light is given as
time interval is given as
so the distance covered by the light is given as
now as we know that
so the distance moved by light is
now for the comparision of this distance with diameter of earth
as we know that radius of earth is
so the diameter of earth will be
now the ratio of diameter with the distance that light move will be
<em>so it is 2.35 times more than the diameter of earth</em>
Answer:
(a) increase
Explanation:
On a line graph; we have the x-axis to the positive side and the negative side .In a positive x-axis direction, the force is usually positive, vice versa the negative side as well.
The change in the potential energy of a charge field-system can be given as:
where;
q = positive test charge
E = Electric field
ds = displacement between thee charge positions
θ = Angle between the electric field and the displacement.
Given that:
Charge of the particle = -q
displacement = (60.0 -20.0)cm = 40.0 cm
θ = 0
Replacing our values in the above equation, we have:
Since the potential energy of the system is positive, therefor the electric potential energy also increases.