According to Kepler's harmonic law, Neptune would have a _________ orbit around the Sun than Mercury.
2 answers:
Slower
Explanation:
Kepler's harmonic law (also called Kepler's third law) states that:
"The cube of the radius of the orbit of a planet around the sun is proportional to the square of its period of revolution"
In formula, this can be written as
where
r is the radius of the orbit
T is the orbital period
const. is a constant number, which is the same for all the planets orbiting the sun
By looking at the equation, we can see that the further a planet from the sun, the larger its orbital period: this means that the further planet will have a slower orbit. In this problem, we have to compare Neptune and Mercury: since Neptune is further from the sun than Mercury, also its orbital period will be larger, and therefore Neptune would have a slower orbit around the Sun than Mercury.
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Answer with Explanation:
We are given that
Length of wire 1=
Length of wire 2=
Resistivity of copper wire=
Resistivity of aluminum wire=
Wire 1=Copper wire
Wire 2=Aluminum wire
Diameter of both wires are same and resistance of both wires are also same.
We know that
Resistance =
When diameter of wires are same then their cross section area are also same .
When resistance and area are same then the length of wire depend upon the resistivity of wire .
The length of wire is inversely proportional to resistivity.
When resistivity is greater then the length of wire will be short and when the resistivity is small then the length of wire will be large.
Therefore,
Hence, the length of wire 1 (copper wire) is greater than the length of wire 2 (aluminum).