Answer:
21600
1296000
Explanation:
Full cycle consists of

1 hour = 3600 seconds
1 minute = 60 seconds
Converting to arcminutes

The arcminutes in a full cycle is 21600
Converting to arcseconds

The arseconds in full cycle is 1296000
There's nothing on the list you provided that's related to Coulomb's Law.
Answer:
The answer depends on the arrangement of the batteries either parallel or series.
If the three batteries are connected in parallel, the voltmeter will read the same voltage as the individual battery (I.e, the combine voltage will remain 1.5 Bolts)
While
If the batteries are connected in series, and are correctly connected together from positive to negative, the combine voltages will increase by adding individual battery voltage together. So for three 1.5 Volts batteries, the total voltages will be 4.5 Volts.
Explanation:
Parallel connected
Vp = 1.5 Volts
Series connection
Vs = 1.5 + 1.5 + 1.5 = 4.5Volts