题目
251R [서울-학부]물리학에숨겨진지혜의아름다움(영강)(INTELLECTUAL BEAUTYHIDING IN PHYSICS(English))-00분반 2025-IBCM-Beta-15(2025.04.29~2025.05.26)
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思路分析
The question asks about which expression is not equivalent to the others for the area of a spherical surface of radius a.
First, examine the integral given in the image: a^2 ∫_{-1}^{+1} d(cos θ) ∫_{0}^{2π} dφ.
- The element d(cos θ) represents the substitution sin θ dθ, since cos θ runs from -1 to 1 as θ goes ......Login to view full explanation登录即可查看完整答案
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