问题
单项选择题
设某种气体的分子速率分布函数为f（v），则速率在v1～v2区间内的分子的平均速率为（）。
A．A
B．B
C．C
D．D
答案
参考答案：C
解析：
求解速率在v1～v2区间内分子的平均速率应该是该区间内的分子具有的速率之和除以该区间的分子个数，即在v1～v2区间内分子的平均速率为
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设某种气体的分子速率分布函数为f（v），则速率在v1～v2区间内的分子的平均速率为（）。
A．A
B．B
C．C
D．D
参考答案：C
解析：
求解速率在v1～v2区间内分子的平均速率应该是该区间内的分子具有的速率之和除以该区间的分子个数，即在v1～v2区间内分子的平均速率为
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