Watt hour is a measurement of energy use, something that's pulling one watt during one hour. Tera is a multiplier, 1x10^18, so it's either something pulling one watt for that many hours, or it's something pulling that many watts for one hour or something inbetween.
5 days 12 hours = 5.5 days19,800 / 5.5 = 3,600 watt-hours per day = 150 watts
It depends on the wattage, Hours = Watt - Hours / Watts
(600 watts) x (12 hours per day) = 7.2 kilowatt-hours per day
1 kilowatt equals 1000 watts. An 80 watt solar panel under ideal conditions produces as you might guess 80 watts. So under ideal conditions it would take 12.5 hours for the panel to produce 1000 watts. (1000/80=12.5)
nano watt
2300 watt-hours for every hour it operates. Watts x Hours = watt hours.
The duration of Battle for Terra is 1.5 hours.
The duration of Toward the Terra is 1.92 hours.
The duration of Ana Terra is 1.67 hours.
Running a power of 60 watts for one hour uses 60 watt-hours of energy. If you run it for two hours, that would be 120 watt-hours. Running a 60 watt appliance for 16 hours and 20 minutes is 1000 watt-hours, or 1 kWh, also called one Unit.
The duration of La terra trema is 2.75 hours.
The duration of Terra Nova - film - is 1.12 hours.
The duration of Terra incognita - film - is 2 hours.
-9900
40 watts for 24 hours is 40 x 24 watt-hours, or 960 watt hours which is 0.96 kilowatt-hours, equal to 0.96 Unit, which costs about £0.12.
The duration of Bbuddah... Hoga Terra Baap is 1.92 hours.
Watt is a unit of power. watt hours is a unit of energy. (Note x watts times y hours is what you pay for on your electric bill.)