简单物理问题一个,英文题目

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查看11 | 回复1 | 2011-4-3 08:30:16 | 显示全部楼层 |阅读模式
Two vectors have equal magnitude, and their scalar product is one-third the square of their magnitud

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千问 | 2011-4-3 08:30:16 | 显示全部楼层
The question is not complete, I guess it was asking for the angle between the 2 vectors:scalar product = a^2/3 = a*a*cosθ = a^2cosθcosθ = 1/3θ = 70.52°
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