a)  Suppose the Earth grew to its present size in 1 million years through the accretion of particles averaging 100 grams each. On average, how many particles did the Earth capture per second, given that the mass of the Earth is = 5.972 × 10 ^24 kg ?

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  1. We think the terrestrial planets formed around solid “seeds” that later grew over time through the accretion of rocks and metals.

    1. a)  Suppose the Earth grew to its present size in 1 million years through the accretion of particles averaging 100 grams each. On average, how many particles did the Earth capture per second, given that the mass of the Earth is = 5.972 × 10 ^24 kg ?

    2. b)  If you stood on Earth during its formation and watched a region covering 100 m^2, how many impacts would you expect to see in one hour. Use the impact rate you calculated in part a. You’ll need the following as well: the radius of the Earth is = 6.371 × 10 ^6 m and the surface area of the Earth is 4??^2Earth

3) We think the terrestrial planets formed around solid "seeds" that later grew over time
through the accretion of rocks and metals.
a) Suppose the Earth grew to its present size in 1 million years through the accretion
of particles averaging 100 grams each. On average, how many particles did the
Earth capture per second, given that the mass of the Earth is MEarth = 5.972 ×
1024 kg ?
b) If you stood on Earth during its formation and watched a region covering 100 m²,
how many impacts would you expect to see in one hour. Use the impact rate you
calculated in part a. You'll need the following as well: the radius of the Earth is
REarth = 6.371 × 106 m and the surface area of the Earth is 4tRarth:
Transcribed Image Text:3) We think the terrestrial planets formed around solid "seeds" that later grew over time through the accretion of rocks and metals. a) Suppose the Earth grew to its present size in 1 million years through the accretion of particles averaging 100 grams each. On average, how many particles did the Earth capture per second, given that the mass of the Earth is MEarth = 5.972 × 1024 kg ? b) If you stood on Earth during its formation and watched a region covering 100 m², how many impacts would you expect to see in one hour. Use the impact rate you calculated in part a. You'll need the following as well: the radius of the Earth is REarth = 6.371 × 106 m and the surface area of the Earth is 4tRarth:
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