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0/8,33 points Previaus AnswersSerCP11 11.5.P.042.My NotesAsk Your TeacherA glass windowpane in a home is 0.62 cm thick and has dimensions of 1.4 2.1 On certain day,...

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0/8,33 points Previaus AnswersSerCP11 11.5.P.042.My NotesAsk Your TeacherA glass windowpane in a home is 0.62 cm thick and has dimensions of 1.4 2.1 On certain day, the indoor temperature is 298C and the outdoor temperature is 0PC. (a) What is the rate at which energy is transferred by heat through the glass?Your response differs significantly from the correct answer: Rework your solution from the beginning and check each step carefully: W(b) How much energy is lost through the window in one day

0/8,33 points Previaus Answers SerCP11 11.5.P.042. My Notes Ask Your Teacher A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.4 2.1 On certain day, the indoor temperature is 298C and the outdoor temperature is 0PC. (a) What is the rate at which energy is transferred by heat through the glass? Your response differs significantly from the correct answer: Rework your solution from the beginning and check each step carefully: W (b) How much energy is lost through the window in one day, assuming the temperatures inside and outside remain constant? Need Help? Wecnl



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A glass windowpane in a home is $0.62 \mathrm{~cm}$ thick and has dimensions of $1.0 \mathrm{~m} \times 2.0 \mathrm{~m}$. On a certain day, the indoor Lemperature is $25^{\circ} \mathrm{C}$ and the outdoor temperature is $0^{\circ} \mathrm{C}$. (a) What is the rate at which energy is transferred by heat through the glass? (b) How much energy is lost through the window in one day, assuming the temperatures inside and outside remain constant?

The girls entertaining a homeless 0.62 centimeters thick and has dimensions of from here and two m on a certain day. The indoor temperatures and basically Celsius. And the outdoor temperature is seriously So What is the rate at which energy is five ft? I'm glad. So the rate at which energy is being transferred and the power okay, okay. Times a delta T. So he's here in my last team won over health which is the depth of the glass. So Kay is your appointment A is one times 2, two is 25. You want to zero and I'll basically 62 cm. Don't forget to put that centimetres. So this gives us power around 6001 For eight. Which energy is lost through the window in one day as well, commit your inside and outside running. So we need energy. Energy is the voting power tense time. So we know the power is 6000 what? And the time is one day, which is 8.64 times 10 to the 4th 2nd. So the energy is equal to 5.2. I understand. Eight and units of jewels

So here in this problem there are two parts on in the a part. We have to find the energy transferred by heat through the glass and were given that there is a glass window pane such that its thickness is 0.62 centimeters. Let Madrid Oh, the new that is going So this is a kind off window on it stick Mrs giving us 0.62 zeros and tomato Onda. It's called sexual area treatment. It's lent and bread This damn engine this dimension is one meter on. This is to Mido Onda the in Beijing. Towards this side is 25 degrees Celsius end toward this side it is zero degrees villages so we have to find the rate off energy transferred by heat. So we know that rate off energy transferred to conduction is given a speak. Also a d d by D. X on where did he body? It is a temperature ingredient. If you calculate that individual Gideon in this case, it will be close to Did you buy? The X is basically a change in temperature. That means Grady five degree Celsius minus zero degrees Celsius to divide by this taking this dimension. So it is 0.62 centimeter. If it can ward in the meters, we have multiplied with minus two. It will be in meters on the tumble connectivity in case off glass window pane, it is equals to 0.8. What for? Major degree Celsius. Now we got blood. Level is here. Okay, we know it's 0.8. What? Bull Mitter Degree Celsius times the area 80 The conception Nadiya on This is the connection earlier it is one meter times two meters. So to me the square directly working right on Did anybody explain it? Is this 25 minus 0 25 Subtleties Divide way 0.62 and returned to the power minus two Mito. So I'm going to simplify and we'll get the result US 6.45 and do 10 to the power three vote. This is amount of heat or you go to the energy release transferred through the window Next to it is a wannabe part on In the be part, we have to find how much energy is transferred through the window. In a part we have calculated the rate off energy and in the be part will be calculating the energy. So basically, energy is nothing but be entertained or to go to the change in pain. B. We already know. 6.45 intended about three votes is nothing but Jewell per second on were to calculate the energy And one day someone depart by 24 hour. And we know that in one hour there are 60 minutes on in one minute in one minute. That is 62nd. All these Your Canzler RV canceled with our minute minute. We cancel out and second with second will cancel out. Finally, we'll get the value s five point 57 endured under the powers Six. It's a jury. It's eight jewels. So this is the energy there has been transferred in a day through the window. And this was a rate off energy transfer through the window. I hope you were the problem. Thank you.

This problem was the concept of the thermal conductivity. And the rate of energy transferred is given by this equation. So for party, the rate of energy transport vehicles, The area that is one m square. And to the change in temperature That is 23°C. upon the thickness of the ah Glass that is 0.5 cm or 0.5 Into Denver's -2 m upon the thermal conductivity of the glass. That is 0.84 jules per second per meter, poor degree Celsius. And since there's two glasses, so we need to multiply this value to plus for the air, The thickness is one cm or one In to tenders -2 m Upon the conductivity of the years. 0.02 3, 4 jewels per second per meter per degree C. So the rate of energy transfer equals 52. What now? Part B. If the air is removed Then from this equation we can substitute this value zero. Okay, And the thickness of the glass will become one cm. So by multiplying two by attaching to glass. Uh this this sickness, will you come one centimetre. So in this case the rate of energy transport Canada's comes out to be 1932. What? And uh ratio With us upon p equals 1932 upon Uh 52. What Or this ratio progress upon p equals 37. So from this we can see If we remove the air uh between the two plus and combine those classes. Then the rate of energy transfer will increase 37 times the initial rate of energy transfer.

What a healthy given problem. The rate of energy transfer through a compound slave he's given by P is equal to eight times delta t change in temperature divided by our where are are is ah, some off the lens derided by K I isa conductive ity. So, um, for a tar Maupin Olle equal to our off the band man plus our off a tramp there dripped here plus are off the pain So this is a cult to our most depend Plus are off the trip there food here Then we can find our biceps treating the values two times 0.5 old times 10 to the power minus two plus one times 10 to the power minus two divided by Here's a 0.8 And here derided bison report 0 to 3 This gives us the car will you 0.44 meter square degree Celsius. I won't from here. Then we can find a p so p will be one meter square Because I was there a 0.44 terms Temperature differences 23 D Excuse us 50 to watch I got to be For once, Adam, it'll take paying off a last live. We have our physical to one time center. Power minus two, divided by 0.8. This gives us one done Shit over. Um, minus two meter meter. Squared off. Ah, Celsius forward. So street value for our in power equation, That is one time screw to three. You're right by 10 to the power minus two. Excuse us two times 10 to the power three watch, which is equal to two kilowatts. So which is a 38 times greater than greater than, uh, greater than when there is an air between the last lips.


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