Suppose That Mercury Grew to Its Present Size in 1

question 65

Multiple Choice

Suppose that Mercury grew to its present size in 1 million years through the accretion of particles averaging 100 g each. On average how many particles did Mercury capture each second? Note: Mercury has a mass of 3.3 10 23 kg and a radius of 2439 km.

• A) about 24 particles per second
• B) about 3.3*10²¹particles per second
• C) about 67 particles per second
• D) about 100 million particles per second
• E) about 100 billion particles per second

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