Please explain! 1A weighlifter lifs a 1,250-N barbellin 2 m in 3 sHow much power was used to lift the barbell?2A crane lifts a 35,000-N steel girder a distance of 25 m an 45 sHow much power did the crane require to lift the girder? Write your answers in kilowatts.Use the formula power work/time to calculate the power.Thank you so much.
112502/3 833.3333 Nm/s 833.3333 watts 23500025/45 19444.4444 Nm/s 19444.4444 watts 19.4444444 kw
With existing insulation in place you will want to put 9 of unfaced fiberglass insulationThat means no paper on the insulation, or you will trap condensation in your attic.
With only 3 to 4 inches of blown in, you aren't getting any viable insulation properties from it anyway, and yes you can lay blanket overIn fact I suggest double blankets run perpendicular to each other With your current insulation, no matter where you live, you have an R value in the 9 to 12 range,,,not at all effective Below is a link that offers infoGranted they are trying to sell themselves, but the charts and numbers are validSteven Wolf Just my two sense ADDED thought: Compressing FG Insulation, decreases its ability, but in your case it will hardly matterNo matter where you are if it was me, I'd go to R 30 at least.
If you haven't already bought the fiberglass, get some more blown in celluloseIt is a two man job, 1 blowing and one loading, and is much cheaper than fiberglass, more R's for the buckUsually a home center will give free use of a blower when you buy insulation from themMinimum of 12deep is suggested, but 16-24 is better in cold climates, seeing what the cost of heating is doing the past few years75%-80% of heat is lost through the ceiling in an inadequately insulated home.
You currently have an R-11 to 13 avgin your atticAn R-38 is more than enough to fix any attic problems13-15 inches of a good brand cellulose over the existing will make you happyFiberlite Technologies out of Joplin Missouri is a great productDon't go to Lowes and rent those bogus machines and buy their crappy productYou can hire a pro to do it and save moneyYou can also get a Federal tax energy rebate for part of the work.
