Particulate Nature of Matter B.1 Thermal Energy Transfers (id: 2d517e68e)

本题目来源于试卷: Particulate Nature of Matter B.1 Thermal Energy Transfers，类别为 IB物理学

[单选题]
A thermally isolated system consists of a tne(.xbaiy3p(n)u ,a ;b8pds coin of weight mga*snl6p;su.p and specific heat capacity c suspended in a vacuum at a vertical distance H above a solid block. The block has mass 4m, specific heat capacity 2c and latent heat of fusion L. The melting temperature of the block is an amount ΔT greater than thp. p;aul6s*nse initial temperature of the block and the coin. The coin is dropped on to the block.


What is the minimum value of H required for the block to melt due to the collision?

A. $frac{8cΔT}{g}$​
B. $frac{8cΔT+4L}{g}$​
C. $frac{9cΔT+4L}{g}$​
D. $frac{9cΔT-4L}{g}$​


参考答案:  C


本题详细解析:

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