Find the length of red arc AB
[2605] 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. - #brainteasers #math - Correct Answers: 43 - The first user who solved this task is Roxana zavari
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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.
#brainteasers #math
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Cannibals capture three men...

Cannibals capture three men. The men are told that they will be skinned and eaten and then their skin will be used to make canoes. Then they are each given a final request. The first man asks to be killed as quickly and painlessly as possible. His request is granted, and they poison him. The second man asks for paper and a pen so that he can write a farewell letter to his family. This request is granted, and after he writes his letter, they kill him saving his skin for their canoes. Now it is the third man's turn. He asks for a fork. The cannibals are confused, but it is his final request, so they give him a fork. As soon as he has the fork he begins stabbing himself all over and shouts, "To hell with your canoes!"
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Charles Barkla

Died 23 Oct 1944 at age 67 (born 7 Jun 1877).Charles Glover Barkla was an English physicist who was awarded the Nobel Prize for Physics in 1917 for his work on X-ray scattering. This technique is applied to the investigation of atomic structures, by studying how X-rays passing through a material and are deflected by the atomic electrons. In 1903, he showed that the scattering of x-rays by gases depends on the molecular weight of the gas. His experiments on the polarization of x-rays (1904) and the direction of scattering of a beam of x-rays (1907) showed X-rays to be electromagnetic radiation like light (whereas, at the time, William Henry Bragg who held that X-rays were particles.) Barkla further discovered that each element has its own characteristic x-ray spectrum.«
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