You should write a function called crawl(start, limit) that will return a list of all the unique email addresses found on all the webpages reachable from the webpage whose url is start , except that you should stop if you have visited limit distinct web pages and return the list from that many pages.

Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.