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 s87h gopj3i.zl ystvh4k t5pd0 0:cz(3j xepzjv1uem consists of a coin of weight mg 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 the initial temperature of the block and the coin. The coin is dropped on tozjzkp he450d 3pxu1(jt:0vcv 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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