a) Distance Earth-Sun is 215.5 solar radii and 23,548 Earth radii
b)
Mercury: 1.7 days
Mars: 6.5 days
Jupiter: 21.7 days
Uranus: 86.8 days
Neptune: 130.2 days
c)
Earths can fit inside the Sun
Explanation:
a)
The distance between the Sun and the Earth is 150 millions km, so

The solar radius is

Therefore the distance Earth-Sun in solar radii is

The Earth radius is

Therefore the distance Earth-Sun in Earth radii is

b)
The speed of the solar wind is

The value of 1 AU (Astronomical Unit) is
(distance Earth-Sun)
The distance between the Sun and Mercury is:

So the time taken by a parcel of solar wind to reach Mercury is:

Converting into days (
),

The distance between the Sun and Mars is:

So the time taken by a parcel of solar wind to reach Mars is:

Converting into days (
),

The distance between the Sun and Jupiter is:

So the time taken by a parcel of solar wind to reach Jupiter is:

Converting into days (
),

The distance between the Sun and Uranus is:

So the time taken by a parcel of solar wind to reach Uranus is:

Converting into days (
),

The distance between the Sun and Neptune is:

So the time taken by a parcel of solar wind to reach Neptune is:

Converting into days (
),

c)
As we said in part a), we have:
(radius of the Earth)
(radius of the Sun)
So the volume of the Earth can be calculated as:

While the volume of the Sun is

Therefore, the number of Earths that could fit inside the Sun is:

Learn more about the Solar System:
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