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A Sphere of Radius R1 Collides with a Sphere of Radius

Question 88

Multiple Choice

A sphere of radius r1 collides with a sphere of radius r2.The cross section for a contact collision is


A) π\pi r
B) 2 π\pi r2
C) ½ π\pi (r1 + r2) 2
D) π\pi (r1 + r2) 2

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