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 system5 +tsoclm, u-m consists of a coin of weight mg and spe0tjhdo:(a8 l-jj7 qwqcific heat capacity c suspended in a vacuum at a vertical dista7 8tjlqqd0o hja-j(:w nce 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 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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