1 mean solar day is equal to how many second?

Metric time is defined so that one day equals 10 hours, one hour equals 100 minutes, and one minute equals 100 seconds. One metric second equals how many normal seconds?

The difference in the lengths of a mean solar day and a sidereal day is about

If the length of a second's pendulum is increased by 1% , how many seconds will it loss or gain in a day ?

If the length of the seconds pendulum is increases by 4%, how many seconds it will lose per day?

If the length of seconds pendulum is decreased by 2\%, how many seconds it will lose per day