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Dalam waktu 20 sekon, baling-baling sebuah helikopter dapat mencapai putaran 6.000 rpm dari keadaan diam selama 20 sekon. Sudut yang ditempuh masing-masing bilah pada baling-baling adalah



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i cannot understand you. you must speak English for me to help...

Based on the given text, the stage of identity development Marcus is experiencing is Identity Foreclosure. This identity development is dominant among teenagers. They tend to venture into a commitment without exploring other alternatives in reaching their desired goals.