Yes a volcanic eruption can suddenly bury a city ! if you look up some stuff on pompeii you can learn more
Answer:
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Answer:
thrust washer
can be used to eliminate rubbing friction of wheel touching frame
Answer:
1 pulse rotate = 9 degree
Explanation:
given data
incremental encoder rotating = 15 rpm
wheel holes = 40
solution
we get here first 1 revolution time
as 15 revolution take = 60 second
so 1 revolution take =
1 revolution take = 4 seconds
and
40 pulse are there for 1 revolution
40 pulse for 360 degree
so 1 pulse rotate is = 
1 pulse rotate = 9 degree