Astronomers estimate that a 2.0-km-diameter asteroid
Chapter 7, Problem 81(choose chapter or problem)
Astronomers estimate that a 2.0-km-diameter asteroid collides with the Earth once every million years. The collision could pose a threat to life on Earth. (a) Assume a spherical asteroid has a mass of 3200 kg for each cubic meter of volume and moves toward the Earth at How much destructive energy could be released when it embeds itself in the Earth? (b) For comparison, a nuclear bomb could release about How many such bombs would have to explode simultaneously to release the destructive energy of the asteroid collision with the Earth?
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