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and length of aluminum is 4.0000cm assume both are heated and cooled together at what temperature will rod barely fits into tubefind mass of copper ,find N of copper.Find final temperature of system.
linear thermal expansion coef Cu 17e-6 /K linear thermal expansion coef Al 23.1e-6 /K ?L/L α?T, α is linear thermal expansion coef But what is D1 and D2 supposed to mean? You really have to supply all the needed info and drawings and not make us guessI'll assume the 1.0 cm is the ID and 1.1 cm the OD of the tube So you need the temperature at which the 1.001 cm of Cu will fit into the 1.000 cm of aluminumCu expands less than aluminum with temperature, so there is a temperature where the aluminum will have expanded enough for the numbers to be equal ?L/L α?T for the Cu, ?L? L?(17e-6)?T for the Al, ?L? L?(23e-6)?T ?L? 1.001(17e-6)?T ?L? 1.000(23e-6)?T 1.000 + ?L? 1.001 + ?L? now it's just algebra ?L? 0.001 + ?L? ?L? 1.000(23e-6)?T 0.001 + ?L? 1.000(23e-6)?T ?L? 1.000(23e-6)?T – 0.001 ?L? 1.001(17e-6)?T subtracting 0 1.000(23e-6)?T – 0.001 – 1.001(17e-6)?T (23e-6)?T – (17.017e-6)?T 0.001 5.983e-6 ?T 0.001 ?T 167?C T 187?C but check my math Mass of copper you can get by calculating the volume and using the density of copper/Don't know what N of copper means.
I have just made my christmas cake and its just out the oven sitting in its tin and paper aroundm it,, it says leav e in the tin in the recipe i used ,does everyone else do it this way or is it best to take it out of the tin etc.?
First of all, the attic should be insulated between the joists for the ceiling - all the horizontal surfaces - to at least R-19 or more (I've raised mine to R-33)If there are any rooms up there, the walls should be insulated, tooPicture the insulation completely covering / wrapping all the inhabited areasThen the attic should be vented like you describe to prevent condensation and moldThe drier vent should go outside the house if it's electric, and must go outside if it's gas, as the discharge contains products of combustionThe drier exhaust will contain a huge amount of water vapor that will condense on any cold surface in the houseDitto the bathroom vent, or lack thereofAll that water left in the air will condense on the windows, and cause water damage to the window sashes (learned that the hard way)The crawl space could be considered the attic upside-downThe floor joists should be insulated, and then the crawl vented as you describeIf the attic and crawl are not insulated, then you are flushing a considerable amount of money down the sewer with all that fresh air interacting with the conditioned spaces.
I know that when some people bake cheesecakes they put aluminum foil in the pan so they can take the cheesecake out betterCan I do this for cakes and pies too? I don't want to have to buy a springform pan when I already have other pans I can useThanks!
Yes you can, or baking paper You only need a couple of 2 strips to form a + along the bottom and up the sidesRemember to grease then with something so the will not stick.
It needs to be kind of easy?
Parchment paperDo not use the tin foilI Once baked with it as a substitute and my things came out discolored and had a odd taste.
Tomorrow some of my old friends are coming to town and having dinner at my houseUnfortunetly I have alot to do so I need something quick and easy that involves chicken since I don't have time to get to the storeAny ideas?
Quick and Easy Italian Chicken by Diana Buzby This recipe was the Grand Prize winner in our Quick and Easy Recipe Contest! 2 pounds chicken breasts 1/2 teaspoon of black pepper 1 teaspoon of salt 1/4 teaspoon of chili pepper or a few drops of Tabasco sauce 1 teaspoon of Italian seasoning 1 tablespoon of dried onions 1 can of Italian stewed tomatoes 1/4 to 1/2 cup of shredded mozzarella Olive oil Place aluminum foil in a square baking dish(This really helps with clean up.) Sprinkle olive oil on the foil in the panSpread the oil evenly so it covers the entire panPlace chicken breast in the panMake about three slits in each breast and sprinkle on the black pepper, salt, chili pepper, Italian seasoning and dried onions(You can adjust seasoning to your taste.) Drain some of the liquid from the tomatoes and pour can over the chicken Cover with foil and bake 350 degrees F for 25 minutesRemove foil, add the cheese and bake another five to 10 minutes uncovered, making sure not to overcook the cheese Serve with fresh vegetables and pasta.
The 5/16quot; is not wide enoughI have an older aluminum framed showerThe seal has become hard and doesn't keep the water in the shower area.
That is something a glass company should have or be able to getIf you can bring it in makes it easier to match itGood kuck
What would be the best thing to use to season a cast iron grill?
Wash the grill with soapy water and dry it well with a towelUse Crisco shortening better that liquid oil to rub the entire grill, do not leave an inch without this coat of Crisco, it doesn't need to be a thick coatPut it inside a heated oven to 300 FPosition the skillet upside down in the oven with aluminum foil under it to catch any dripping from the criscoWait for 20 minutes, the oil by now should be absorvedNow raise the oven temperature to 500 F for one hourCheck your cast iron grill, it should have an even, black, shiny sheen, if it does you are doneIf it doesn't have that shiny sheen coat raise the oven temperature to 525 F and wait for 30 more minutesIt should be ready by nowTurn the oven offYou can have in detail the entire process in this siteWe took it from here to season aour brand new cast iron grill and it worksGood luck!
Where can I buy inexpensive styrofoam balls and shapes?
First, Styrofoam is actually a brand namethough in the US most people tend to think of it as the only polystyrene foam that comes in shapesBalls are a more difficult shape, but you can buy other types of polystyrene foam in sheets or just use packaging material that's used to protect electronics, etc., then cut your own shapes with a serrated knife -or a hot wire or hot toolthen shape with sandpaper, wire brush, rasps, or even another broken edge of foam You could probably make ball shapes, but they'd take more time than some other shapesYou might be better off making spheres from other things -like scrunched aluminum foil, paper with masking tape around it, or papier mache, etcor buy pingpong and other cheap ballsat a hardware store, sold as sheets of insulation (blue or pinkor green, yellow)this type is easier to cut and shape than some of the packing foam, which is little ps balls pressed tightly together (.sheets can also be stacked and glued together first -white glue is good- to make thicker items) Diane B.