Particulate Nature of Matter B.1 Thermal Energy Transfers (id: 2a8ae6164)

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]
The graph shows how the temperatu une59 mwv75yfre of a solid wax block varies jk838 eanpt-2mj8x w+lh/opo 6csw87x(zov j with time. The solid wax has a specific heat cltwj6vwcmh 8pskj oo8(2 po-37j+ xe /8n8xazapacity of $2\,kJ\,kg^{−1}K^{−1}$ and it absorbs heat at a rate of 20W.



What is the specific latent heat of fusion of wax?

A. 50$J\,g^{-1}$
B. 100$J\,g^{-1}$
C. 200$J\,g^{-1}$
D. 400$J\,g^{-1}$


参考答案:  C


本题详细解析:

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