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Find the length of red arc AB

Find the length of red arc AB (r1=1, r2=2). Express result to the accuracy of 3 decimal.

Correct answers: 43

The first user who solved this task is Roxana zavari.

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I Would Like To Havea Second Opinion

A patient has a sore throat and goes to a doctor to get treatment for it.
Doctor: Your tonsils gotta come out.
Patient: I wanna second opinion.
Doctor: Okay, you're ugly, too.

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Aage N. Bohr

Born 19 Jun 1922.Aage Niels Bohr is a Danish physicist, son of physicist Niels Bohr. They both contributed to the building of the atomic bomb during WW II. As his Nobel-winning father had done before him, Aage Bohr shared the 1975 Nobel Prize for Physics with Ben R. Mottelson and James Rainwater “for the discovery of the connection between collective motion and particle motion in atomic nuclei and the development of the theory of the structure of the atomic nucleus based on this connection.”The theory helped explain many nuclear properties by showing that nuclear particles can vibrate and rotate so as to distort the shape of the nucleus from the expected spherical symmetry into an ellipsoid.

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