The second hand on the clock circles 420 times in 7 hours.
22 times
They overlap 11 times.
it has high stability large q factor and the frequency that doesn't drift with aging. It is used as a clock source most of the times.
It depends on the clock; None of my clocks chime even once. A clock that rings the quarter hours (like the clock in the Palace of Westminster - aka, Big Ben) would chime 96 times per 24 hours. Some clocks only chime on the hours, which would be 24 chimes/day.
22 times in every 12 hours.
Eleven.
No - the minute hand rotates 24 times in 24 hours !
11 times in every 12 hours.
146
Time to move the hour hand ahead 12 hours. Other wags might suggest it would be time to get a new clock.
24 hours per day times 7 days in a week