Apiston-cylinder contains 1.2 kg of saturated (vapor) steam at 200°c. heat is transferred to the steam, expanding it reversibly and isothermally to a pressure of 800 kpa assuming real properties (and using ees) determine: ? ? (a) the total amount of heat transferred in (kj) [218k/] (b)the total work done by the process (kj) [175.4 kj] where h2o= 200°c sat. vapor t= const

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.