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12000 megawatts
650 sft multiplied by 26 which means 16900. I BTU =12000 Divide 16900/12000 = 1.4 ton
like every 2 or 3 days
If the smoke alarm lasts for ten years before you need to replace it, and the batteries should be replaced at least once per year, you would need to change the batteries of a smoke alarm ten times before you replace the entire thing.
As many times as you need to
40, because your going to need to change the diaper at least 5 times a day, also you might need more if you are feeding more to your baby or if you are constantly going out .
How often you change your pad depends on how heavy your flow is and how often your pads fill-up. You need to change your pads at least every 4-6 hours, this is true even if they're not full because you need to change often in order to remain hygienic.
how many times should you need to calibrate your glucometer in a week
No I think you will need an 18000 condenser for an 18000 BTU.
2 times
Too many variables to answer ... need make of car, year of car, model of car, what engine is in car, is it a turbo engine, it is supercharged etc.
as many times as they want/need to