JR Macdonald Laboratory 1999 Summer Short Course:

	Introduction to Mechanical Designs and Vacuum: 	
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	Problem 2.1) How long does it take to evacuate a 1 gallon
	  freezer bag with a 900 cu.in./min. vacuum pump to 1 Torr? 

	Problem 2.2) How long does it take to evacuate a 4" diameter
	  20 ft long beam line with a 8 CFM pump to 1 Torr? 
	  How long does it take to evacuate it to 100 mTorr?