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.

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.