http://www.stampcollectioninfo.com/sheet-pane/
physics question what is the answer?
-Heat loss through windows is substantial. What percentage savings will be gained by covering a double-pane window with 2-in. sheet of rigid polystyrene board?
polystyrene board Thickness: 1. R-Value (ft^2-h-°F/Btu): 4.0
Please do not put any silly answers. I am here to learn and i'm really having trouble understanding this material. SO PLEASE IF ITS NOT EDUCATIONAL DON'T BOTHER ANSWERING!
Not enough information. We only know one R-value, and not the R-value of the other layer of window.
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 2012 USPS BIRDS OF PREY STAMP SHEET FRESH PANE OF 20 85 STAMPS NEW $22.35 Time Remaining: 4h 36m Buy It Now for only: $25.00 |
 Star Wars Yoda Mint US Uncut Press Sheet 41 Stamps 3 pane set $39.99 Time Remaining: 6h 53m |
 Baseball Sluggers Mickey Mantle stamp pane unused sheet $9.95 Time Remaining: 8h 50m Buy It Now for only: $9.95 |
 CLASSIC COMIC STRIPS PRESS SHEET 3000 6 PANES 120 Stamps MNH OG $29.99 (1 Bid) Time Remaining: 11h 41m |
 ANTIQUE TOYS SHEET OF 20 SELF ADHESIVE STAMPS SCOTT 3645e PANE V2221 $14.99 Time Remaining: 15h 9m Buy It Now for only: $14.99 |
 Pane of 9 USA TRANS MISSISSIPI 3209 MINT MNH SHEET 1998 $5.75 Time Remaining: 17h 25m Buy It Now for only: $12.00 |
 Comic Strip Classics Mint Full Pane Sheet 1995 32 cent $6.00 (1 Bid) Time Remaining: 18h 43m |
 Press Sheet of 4 panes Sc3184 1920sCelebrate Century $30.00 Time Remaining: 1d 12m Buy It Now for only: $30.00 |
 1757 Pane of 8 CAPEX 78 Souvenir Sheet Stamps $2.30 Time Remaining: 1d 4h 2m Buy It Now for only: $2.30 |
 Bugs Bunny USA 32c 10 stamp sheet w matted pane original plastic seal $7.99 Time Remaining: 1d 12h 53m Buy It Now for only: $24.99 |
 100 5 Panes Sheets x 20 ZORA NEALE HURSTON 037 USPS Mint Postage US Stamps $36.69 Time Remaining: 1d 17h 12m Buy It Now for only: $36.69 |
 USA MNH PANE OF 20 AM NATURE SERIES ARCTIC TUNDRA 2002 STAMP SHEET S 1921 $9.95 Time Remaining: 1d 18h 1m Buy It Now for only: $9.95 |
 100 5 Panes Sheets x 20 WOMEN IN JOURNALISM 037 USPS Mint Postage US Stamps $37.69 Time Remaining: 1d 18h 5m Buy It Now for only: $37.69 |
 1995 AMERICAN INDIAN DANCESSIGNED BY THE ARTISTFULL PANE STAMP SHEET 2995 FV $15.99 Time Remaining: 1d 18h 10m |
 100 5 Panes Sheets x 20 THE ART OF DISNEY IMAGINATION 042 New US Stamps $42.69 Time Remaining: 1d 18h 19m Buy It Now for only: $42.69 |
 MINT 100 5 Panes Sheets x 20 Wisdom Rockefeller Center NY USA 100 Stamps $92.69 Time Remaining: 1d 22h 17m Buy It Now for only: $92.69 |
 USA Space Exploration Unused Uncut Sheet of 5 Panes Scott No 3409 3412 $209.99 Time Remaining: 2d 47m |
 10 Panes Sheets x 18 180 US Lady Liberty US Flag Forever Stamps FV 8100 $77.69 Time Remaining: 2d 9h 21m Buy It Now for only: $77.69 |
 US Stamps 2975 32c Civil War Full Sheet Pane of 20 MNH Mint Never Hinged $12.50 Time Remaining: 2d 9h 39m |
 UNCUT SHEET 35 1CENT YOSEMITE PARK SCOTT 769 MULTI PANES PAIRS GUTTERS ETC $23.99 Time Remaining: 2d 11h 31m |
 Cat no 4522 4523 Double sided pane of 12 CIVIL WAR SHEET 1st in Series $7.50 Time Remaining: 2d 11h 49m Buy It Now for only: $7.50 |
 Full Pane Sheet 32cnt Classic Movie Monsters $8.00 Time Remaining: 3d 5h 13m Buy It Now for only: $8.00 |
 3306 Pane Sheet of 10 stamps 33cent Daffy Duck Lisp Avian Looney Tunes Warner BR $7.75 Time Remaining: 3d 6h 6m Buy It Now for only: $7.75 |
 3391 Pane Sheet of 10 stamps 33cent Road Runner and Wile E Coyote Acme Supply Co $9.95 Time Remaining: 3d 6h 13m Buy It Now for only: $9.95 |
 3321 24 Pane Sheet 33ct Xtreme Sports Skateboards BMX biking Snowboards Inline $16.50 Time Remaining: 3d 6h 36m Buy It Now for only: $16.50 |
 US Scott 2559 World War II 1941 Full Sheet 2 Panes 10 $15.00 Time Remaining: 3d 7h 6m Buy It Now for only: $15.00 |
 US Scott 2697 World War II 1942 Full Sheet 2 Panes 10 $15.00 Time Remaining: 3d 7h 10m Buy It Now for only: $15.00 |
 US Scott 2765 World War II 1943 Full Sheet 2 Panes 10 $15.00 Time Remaining: 3d 7h 15m Buy It Now for only: $15.00 |
 US Scott 2838 World War II 1944 Full Sheet 2 Panes 10 $28.95 Time Remaining: 3d 7h 18m Buy It Now for only: $28.95 |
 3023a TESTING PANE WITH SHEET MARKINGS JUST 2 KNOWN $1,250.00 Time Remaining: 3d 8h 19m Buy It Now for only: $1,250.00 |
 2010 Holiday Evergreens Forever ATM Pane Sheet of 18 Stamps MNHUS Postage $13.88 Time Remaining: 3d 9h 47m Buy It Now for only: $13.88 |
 2011 Lady Liberty US Flag ATM Pane Sheet of 18 Stamps ForeverMNHPostage $13.88 Time Remaining: 3d 9h 51m Buy It Now for only: $13.88 |
 2011 Holiday Baubles Forever ATM Pane Sheet of 18 Stamps MNH US Postage $13.88 Time Remaining: 3d 9h 55m Buy It Now for only: $13.88 |
 Press Sheet of 4 panes Sc3182 1900sCelebrate Century $30.00 Time Remaining: 3d 11h 52m Buy It Now for only: $30.00 |
 US 2841 MNH pane of 16 on souvenir sheet $11.00 Time Remaining: 3d 12h 10m Buy It Now for only: $11.00 |
 OddLots US Sheet Mint Never Hinged Scott 937 Commemorative Pane of 100 $4.99 Time Remaining: 3d 12h 48m |
 OddLots US Sheet Mint Never Hinged Scott 1095 Commemorative Pane of 70 $3.25 Time Remaining: 3d 12h 52m |
 OddLots US Sheet Mint Never Hinged Scott 1117 Commemorative Pane of 70 $2.79 Time Remaining: 3d 12h 56m |
 OddLots US Sheet Mint Never Hinged Scott 1153 Commemorative Pane of 50 $1.99 Time Remaining: 3d 12h 59m |
 OddLots US Sheet Mint Never Hinged Scott 1313 Commemorative Pane of 50 $1.99 Time Remaining: 3d 13h 3m |
 OddLots US Sheet Mint Never Hinged Scott 1314 Commemorative Pane of 50 $1.99 (1 Bid) Time Remaining: 3d 13h 6m |
 OddLots US Sheet Mint Never Hinged Scott 1315 Commemorative Pane of 50 $1.99 Time Remaining: 3d 13h 10m |
 OddLots US Sheet Mint Never Hinged Scott 1316 Commemorative Pane of 50 $1.99 Time Remaining: 3d 13h 13m |
 OddLots US Sheet Mint Never Hinged Scott 1318 Commemorative Pane of 50 $1.99 Time Remaining: 3d 13h 15m |
 OddLots US Sheet Mint Never Hinged Scott 1319 Commemorative Pane of 50 $1.99 Time Remaining: 3d 13h 17m |
 OddLots US Sheet Mint Never Hinged Scott 1361 Commemorative Pane of 50 $2.49 Time Remaining: 3d 13h 19m |
 OddLots US Sheet Mint Never Hinged Scott 1363 Commemorative Pane of 50 $3.99 Time Remaining: 3d 13h 22m |
 OddLots US Sheet Mint Never Hinged Scott 1383 Commemorative Pane of 32 $1.49 (1 Bid) Time Remaining: 3d 13h 24m |
 OddLots US Sheet Mint Never Hinged Scott 1430a Commemorative Pane of 32 $2.59 Time Remaining: 3d 13h 27m |
 OddLots US Sheet Mint Never Hinged Scott 1443a Commemorative Pane of 32 $2.49 Time Remaining: 3d 13h 29m |