A meteor melts when it enters the Earth’s atmosphere. Assuming that the meteor is primarily made of iron and that its initial temperature was −125°C outside of Earth’s atmosphere, calculate the minimum speed it must have had before it entered Earth’s atmosphere. (The specific heat, the melting point, and the latent heat of fusion for iron are 450 J/kg.°C, 1808°C, and 2.89 x 10^5 J/kg , respectively.)

A meteor melts when it enters the Earth’s atmosphere. Assuming that the meteor is primarily made of iron and that its initial temperature was −125°C outside of Earth’s atmosphere, calculate the minimum speed it must have had before it entered Earth’s atmosphere. (The specific heat, the melting point, and the latent heat of fusion for iron are 450 J/kg.°C, 1808°C, and 2.89 x 10^5 J/kg , respectively.)

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter21: Heat And The First Law Of Thermodynamics

Section: Chapter Questions

Problem 31PQ: Consider the latent heat of fusion and the latent heat of vaporization for H2O, 3.33 105 J/kg and...

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