if a planets orbit has an eccentricity of .5 and the distance between the focus of its elliptical path is 2AU when is the length of this orbits major axis

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

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