Heat transfer in a hollow fiber blood flows through a hollow fiber with an inside diameter of 100 mm and outside diameter of 120 mm. the blood is cooled by blowing air at a lower temperature across the outside surface of the fiber. the thermal conductivity of the fiber is 2 104 kw/m c. compute the overall heat transfer coefficient uo of the fiber based on the outside radius if: (a) all the thermal resistance is in the fiber wall. (b) the heat transfer coefficient between blood and the inside fiber wall is given by (8.35) and the heat transfer coefficient between air and the outside surface of the fiber is given by (8.47). use kblood 1⁄4 0.633 w/m k and kair 1⁄4 0.0262 w/m k, reynolds number for air 1⁄4 200,000 and prair 1⁄4 0.7. how much error is introduced by assuming that all of the thermal resistance is in the fiber wall?

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This penny, struck in 1903, has been defaced with the slogan 'votes for women' over the portrait of king edward vii. at the start of edward vii's reign women, along with the poor and criminals, were denied the right to vote. mutilating coins was one of the methods suffragettes used to spread their message of universal suffrage to a wide audience. pennies were used by all sections of society and were so small a denomination they were rarely recalled by the bank.how else did the suffragettes campaign for votes for women? suffragette derives from the word suffrage meaning the right to vote. as well as conventional campaigning, the suffragettes also attacked museums, famously slashing the rokeby venus, a painting in the national gallery, in 1914. they also smashed a mummy case in the british museum. in 1918 the representation of the people act gave women over the age of 30 the right to vote but it was not until 1928 that women were given the same voting rights as men.