Extension boards allow many plugs to use a single electrical source. The extension board shown here is special because it can be
stretched or extended as shown here. What is the advantage of this extension board compared to non-extendable boards with the same number of plug points?
1 answer:
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Answer:
A.
Explanation:
Our values are defined by,
We can express also in a vectorial way, then
no values in
Acceleration as follow,
We know that velocity is given by,
We need to calculate for t=3, then
Our mass is 1000Kg, so the momentum is
Answer:
Aphelion: 6404 W/m2
Perihelion: 14978 W/m2
Explanation:
The solar energy flux depends on the solar power output divided by the surface of a sphere with a radius equal to the distance to the Sun.
The distances we need are the aphelion and perihelion of Mercury.
Planetary orbits are ellipses. In an ellipse the eccentricity is related to linear eccentricity and the length of the semi major axis:
Where
e: eccentricity
c: linear eccentricity
a: semi major axis
The linear eccentricity is equal to the distance of the focus of the center of the ellipse.
a = 0.39 AU = 5.83e10 m
In planetary orbits the Sun is in one of the fucuses. With this we can calculate the prihelion and aphelion as:
Ap = a + c = 5.83e10 + 1.22e10 = 7.05e10 m
Pe = a - c = 5.83e10 - 1.22e10 = 4.61e10 m
And the solar energy fluxes will be: