PLEASE CAN ANYON EANSWER THESE QUESTIONS PROPERLY? 1a) As you have heard in this

Question

PLEASE CAN ANYON EANSWER THESE QUESTIONS PROPERLY?

1a) As you have heard in this Module, the Solar System probably started as a disk of material, most of which ended up forming into the planets. We can use the positions and masses of the planets to make a rough estimate of the surface density of this disk and how this varied with distance from the Sun. Surface density is the sum of all of the mass perpendicular to the plane of the disk. Theorists suggest that the disk gets much thicker at larger distances from the Sun which might imply that the surface density increases with distance.

b) Make a table and then plot the surface densities estimates for each of the eight planets. You will need to look up some numbers either in your text or on-line (cite your reference). In your table the first column should be the planet’s name, the second column should be the semi-major axis of the orbit (a) in meters, the third column should be the mass of the planet in kilograms, and the fourth column should be the surface density which you can (roughly) estimate as:

[planet mass]/[pi a^2)

Make a plot of the log (base 10 is always used unless your are told otherwise) of the surface density versus the log of the average distance from the Sun a . Use different colours or symbols for the Terrestrial planets and for the Giant Planets. These are data points – there is no reason to connect the symbols with lines. Then discuss your result, with reference to the structure of the early Solar System disk. Describing the plot is not a discussion.

2) Estimate how much energy would be deposited into the Earth if it hit by a one tonne meteor traveling on an orbit around the Sun with a semi-major axis of 22.0 A.U. Note: in order to hit the Earth this meteor can not be in a circular orbit. Consider two cases: At the point of impact (a) the meteor is traveling parallel and in the same direction as the Earth’s orbit and (b) the meteor is traveling parallel and in the opposite direction. A tonne is 1000 kg, the kinetic energy is given by 1/2 mass x velocity^2, and the Earth’s orbital velocity is approximately 30.0 km/s.

Explanation / Answer

Answer :1a

The density of terrestrial planets decreases with increase in distance from the sun as we may see in case of mercury, venus, earth and mars.

Answer:1b

Distance(AU)

1 A.U. = 1.496× 108 km

Mass(ME)

1 ME = 5.9736× 1024 kg

Density

g/cm3

Answer 2:

The meteorite transfer all its energy in to earth after hitting the earth. Therefore, to calculate the energy that would deposit in to the earth, we have to calculate kinetic energy.

K.E= 1/2 mv2

where, K.E= Kinetic Energy, m= 1000 kg and v= 30.0 km/s

K.E= 1/2* 1000*(30)2 = 450000 joules

Name of planet

Distance(AU)

1 A.U. = 1.496× 108 km

Mass(ME)

1 ME = 5.9736× 1024 kg

Density

g/cm3

Mercury 0.387 0.0553 5.427 Venus 0.723 0.815 5.243 Earth 1.000 1.000 5.515 Mars 1.524 0.107 3.933 Jupiter 5.203 317.83 1.326 Saturn 9.537 95.159 0.687 Ura nus 19.191 14.536 1.270 Neptune 30.069 17.147 1.638 Pluto 39.482 0.0021 1.750

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