Problem 1.1 A spherical UHV chamber with a volume of 0.5m ^ 3 is pumped through a circular tube with a diameter of 20 cm and a length of 50 cm. The used sputter ion pump has a pumping speed of 1000l / s . The end pressure reached after baking out the vessel is 7 * 10 ^ - 11 Torr. What is the gas desorption rate from the walls of the UHV chamber at steady state

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2

v=ir = 3x15 =45 v

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.