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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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Sticky Hair?

Rabbit is hopping along the forest one day, when he comes upon Bear taking a dump.

Bear says, "Rabbit, do you have a problem with shit sticking to your fur?"

Rabbit replies, "No Bear, I don't. Why do you ask?"

So Bear grabs Rabbit and wipes his ass with him.

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Svante Arrhenius

Died 2 Oct 1927 at age 68 (born 19 Feb 1859). Svante (August) Arrhenius was a Swedish physical chemist who was awarded the 1903 Nobel Prize in Chemistry "in recognition of the extraordinary services he has rendered to the advancement of chemistry by his electrolytic theory of dissociation." Electrolytes are chemical compounds which will conduct an electric current when fused or dissolved in certain solvents, usually water. He discovered that even when there is no current flowing through the solution, such compounds separate into particles carrying an electrical charge, called ions. He also investigated the viscosity of solutions and how reaction speed changes with temperature. After 1900, his interests diversified into cosmic physics, meterology and the theory of immunity.«

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