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A small company makes solar panels One possible model for the manufacturing process shann Ihe right Using Ihis mode predici the cos per Unilin a balch 300.Dependent...

Question

A small company makes solar panels One possible model for the manufacturing process shann Ihe right Using Ihis mode predici the cos per Unilin a balch 300.Dependent variable Log1ol Cosi squared 89.796 0846 with 15 - 2 = 13 degrees Variable Inlercept uniteunit)squared (acjualed) 88.996Tcedon Coedlcient 7613 0041Coem) 0-07 0oi-KraticP_ale 0CO01 WLuuTThe cost per unit batcn of 300 (Round three decimal places needed )

A small company makes solar panels One possible model for the manufacturing process shann Ihe right Using Ihis mode predici the cos per Unilin a balch 300. Dependent variable Log1ol Cosi squared 89.796 0846 with 15 - 2 = 13 degrees Variable Inlercept unite unit) squared (acjualed) 88.996 Tcedon Coedlcient 7613 0041 Coem) 0-07 0oi- Kratic P_ale 0CO01 WLuuT The cost per unit batcn of 300 (Round three decimal places needed )



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Installing a solar panel Shown in the figure is a solar panel 10 feet in width, which is to be attached to a roof that makes an angle of $25^{\circ}$ with the horizontal. Approximate the length $d$ of the brace that is needed for the panel to make an angle of $45^{\circ}$ with the horizontal. (figure cannot copy)

Hello guys. So today we're gonna answer the question about to find the land day of the race. So we're giving a figure here. I'm gonna do my best enjoy it up with you guys. So you have various we don't have a longer now disclosed out one man. It's okay. Uh A here have saved their have good here. That will be here. They were 20° and 25°. This is the original direction X. After the be longer. Yeah. Very degree to five have a horizontal direction and this is why. Okay, we have to be up here. Okay. So this is that they're going to give them to us where A B. Y. Is the roof on Mr solo? So for the given problems. Yeah, Casey angles G A X Equal to 5°. And why is he calling qualified name? You have angles scene. Mhm. English the A. X. You're going for the fine degrees and we'll see kg definitely 45 with a -25°. The jews turn. We also had a you see the sea. It was that easy Which is 90° and we'll see the Y Which is 90° nine is 25° C $65. Okay. And with a view to is equal 8° -65° were left on 100%. Okay. So we're going to apply the love sign in this journal. Mm. Would have sorry of 20 degrees over the Equalling the sign. I was one of the 15° over time. Ap equal mhm. Time design of tiny degree Over this time of 115°. He did have four. And you want to apply? We're getting a really helpful. So you know it's there AP 84 and still life the land this program, the length of the grace from native difference. He's approximately or eat. This is your final answer to this question. Thank you guys. And I hope you helped have a great rest of today.

Okay. In this question of function is given that is S. T. Equals to 0.73 D square plus 15.8 T. Plus 2.7. Okay. Where T. Is from 0 to 8? And here as the notes to the solar cell kilowatt hour use. Okay. That is measured in millions kilowatt hour. Okay. And he is that is projected in two years. Okay. This solar cells are used projected this T years where T. Is from 0 to 8 and T equals to zero corresponding to the year 2000. Okay. And what we have to find out. We have to find out part a what what was the number of projected solar cell kilowatt ours used in 2006? Using the United States for 2006. 4, 2006. They will be six. Okay. Because for the year 2000 0 party cause 264 2000 four, sorry. Here four. Okay. 4, 2006. So we will put uh equals to six in the in this equation will get six. Okay and this will be six. It is 0.73 multiplied by 60 square plus 15.8. Multiplied by six plus 2.7. And when we saw this will be 0.73 multiplied by 36. It is 26.28 plus 15.8. Multiplied by six. That is 94.8 plus 2.7. And when we solve it will be 1 23.78 Okay. And the unit is million kilowatts are so it? S. Six. It will be 1 23.78 million. Hello Wart. Okay, so this will be the answer of part of discussion. And now part B. We have to find out the same for 2008. So 4, 2008 t will be eight. Okay, now we have to find out as eight. So we will put the 1st 28 hair. So it will be 0.73 80 square Plus 15.8. multiplied by eight Plus 2.7. Okay. And now we will find out. We will solve the question. So it will be 0.73 multiplied by. It is clear that 64. So it will be 46.72 plus 15 pointed Multiply by eight. It will be 1 26.4 plus 2.7. Same from the ball. And it will be 1 75.8. Okay. And S. Eight or we can say the solar cell used in T plus two eight. That is for 2008. It will be 1 75.82 million. Okay. The United million kilowatt hour. And this will be the final answer of part B of discussion. Thank you.

Okay, sort of In chapter 26 problems 75. So I says a solar sail. Solar also not sail solar cell. Three centimeter squares of three by three centimeters. So has an output of 350 million amps at 84 for 8.8 volts. Sorry. And I can't talk very well right now. So output of 3 50 Mila amps zero porn, eight balls. And it says a solar panel that delivers close to 1.3 amps of a current at an E M F 120 volts to an external load is needed. So we need 1.3 aims 120 volts. How many cells where you need to create this panel. Okay, so to build up a higher voltage, we know we put the cells in Siri's. And if we need 100 and 20 volts from a series of cells and each cell is 0.8 Holt's purcell, we just divide that and we see that we need roughly 150 cells to provide the voltage. Since all of these cells are the same, they're going to have this girl in Siri's. They're gonna all have the same current going through the A current of 350 milligrams to achieve the higher current. Now we need to make banks of these cells that can all be connected in parallel. So if we have cells are banks of cells and parallel from each other, then their currents are going to. So if we take, we need a 1.3 amps of current and we're getting 350 million amps per bang. We divide this out and we need says 3.71 banks, since we can't really have banks of different mounts because they're gonna have different voltage, we need each bank to have the same amount of cells and Siri's, because otherwise they would have different cultures from each other. So we have to round up here and use four thanks of 150 cells each. So how many self total is that 600 cells needed? We write that better. Sorry. 600 cells. I need it to create this panel. So the second part of the question is healthy. The panel will you need and how should you connect the cells to one another? Okay, so we know that the panel area is 600 settles and each cell has a three times 10 to the negative two meter times, three times in a two meter area. So the total area here multiply these together and times it by 600 is 0.5 for square meters. So we need 600 cells. We need it to be an area of 0.54 square meters. And the last question that says it is not quite not the last question second to last is how you connect these cells. So we're gonna have four banks and parallel like this where each of these have 150 cells in Siri's. So we have 150 groups of our groups of 150 cells and Siri's and four of those groups connected together and parallel. Okay, so this produces a little bit more than we need value because we only needed 3.71 thanks to produce. Right. So this is gonna be 1.4 aims at 120 volts and says to optimize the output. Oh, sorry. How can you optimize the output of a solar panel Well, we can always have it winning directly at the sun, obviously. Right point, son, What you can see, Um, sometimes, depending on where you are, if the sun's gonna be moving a lot, it's worth it to produce small motors on your solar cells on track this son. But that obviously takes energy. So you have to think about Is it worth it, too? Set up a stationary solar panel at the average. Or the woman the angle that gets the most direct sunlight on average. Or is it better to create small motors on that? Tilt your polar SOS to follow the sun, but that's gonna take some energy. So you have to be an engineering problem and just figure out what works best, right? So for different areas is gonna be different. But a lot of the less son your places, it's better to just put it up are a fixed taste that it seems. But it just depends

So we have a situation where we want to figure out what's going on with solar panels compared to a typical day at home. So assume eight hours of useful. Some, like today, calculate the minimum solar panel surface area to provide some electricity. So energy used in eight hours. So we're gonna assume 40 kilowatts. So we need 40 killer jewels for out for age process. Times change our time to 3600 seconds. For our equals, we would need 1.4 times 10 to the villa jewels of energy. So that's the normal house. Circumstance or typical home uses about 48 kilowatts per day and over assuming eight hours, we'll soon eight hours on both ends. So from the sun in eight hours, we know that it's going to give us about 10 killer jewels per second per meter squared. So service area times, let's get it two hours, 60 minutes and our so we can get, um, times eight hours, 2.9 times unto the fourth. Kill it, Jules, for surface area. So if only 19% of that sunlight is cover converted into electricity. So we're gonna take what we just got here 2.9 times 10 to the four times 0.19 To get that 19% times area equals 1.4 times 10 to the fifth Villa jewels, toe power. Our house, right. That's where we got that. We need about 25 meters squared.


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