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 3.3×10²³ kg and a radius of 2439 km.
A)about 67 particles per second
B)about 100 million particles per second
C)about 100 billion particles per second
D)about 3.3×10²¹ particles per second

Question

Quizplus · Accepted Answer

To find the number of particles captured per second, divide Mercury's total mass by the mass of each particle, then divide by the total number of seconds in 1 million years. This calculation results in approximately 100 billion particles per second.

Suppose That Mercury Grew to Its Present Size in 1