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Function: driver
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Cacher.php
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Function: driver
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Cacher.php
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Function: initiateCache
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Line: 799
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Function: _error_handler
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: model
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: getFloatingMyInfo
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
Line: 559
Function: get_footer
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
아인수타인
2020.03.15 01:37
조회 548
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엡실론-델타
Lv.3
2020.03.15 03:23
비밀댓글
비밀 댓글이 등록 되었습니다.
-
로보카폴리
Lv.11
2020.03.15 05:52
페루마가 한강공원에 갔다(이 한강공원은 강북에 있고, 한강은 동쪽에서 서쪽으로 흐른다). 한강이 예뻐서 동영상을 찍었다. 페루마의 카메라 동영상은 1초에 10번 찍을 수 있다. 그런데 동영상을 본 페루마는 이상한 걸 발견했다.
페루마: 어? 이상하다. 여긴 강북이니까 한강이 흐르는 방향은 왼쪽에서 오른쪽으로 흘러야 하는데 왜 오른쪽에서 왼쪽으로 흐르지? 내 카메라가 드디어 고장났나?
페루마의 동영상에서는 한강이 1cm/s의 속력으로 왼쪽으로 흘렀고 한강 수면파의 파장은 5cm였다. 그러면 실제로 한강이 흐르는 속력의 최솟값은 얼마일까?
이게 문제입니다
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