5

Refrigerator prices are affected by characteristics such %s whether or not the refrigerator is on sale, whether or not it i$ listed a5 Zero brand_ Sub- the number o...

Question

Refrigerator prices are affected by characteristics such %s whether or not the refrigerator is on sale, whether or not it i$ listed a5 Zero brand_ Sub- the number of doors (one door Or two doors) and the placement of the freezer compartment (top side or bottomi Tne table below shows the regression output from regression model using the natural log of price a5 the dependent variable- The model was developed by the Bureau of Labor Statistics_Variable Intercept Sale price Sub-Zero brana Total capac

Refrigerator prices are affected by characteristics such %s whether or not the refrigerator is on sale, whether or not it i$ listed a5 Zero brand_ Sub- the number of doors (one door Or two doors) and the placement of the freezer compartment (top side or bottomi Tne table below shows the regression output from regression model using the natural log of price a5 the dependent variable- The model was developed by the Bureau of Labor Statistics_ Variable Intercept Sale price Sub-Zero brana Total capacity (in cubic ft) Two-door, freezer boceom Two- door side freezer Two- door _ freezer tOP One door with freezer One door, no freezer Coefficient 4800 -0.0749 1.1350 .07689 04725 Base 3753 7522 8762 standard Error 12454 0.0222 1387 00608 0.07467 Statiatic .00 37 17 8.18 12.64 03813 1288 1362 -6.43 model; careful to exclude the base indicator variable: (Negative amounts should be indicated by (a) Write the regression being minus sign_ Round your answers to 4 decimal places-) 2DoorFzBot 2DoorFzTop- SalePrice Sub-Zero Capacity In(Price) 1DoorFz 1DoorNoFz ne not sianificant



Answers

It is often stated that the refrigerator door should be opened as few times as possible for the shortest duration of time to save energy. Consider a household refrigerator whose interior volume is $0.9 \mathrm{m}^{3}$ and average internal temperature is $4^{\circ} \mathrm{C} .$ At any given time, one-third of the refrigerated space is occupied by food items, and the remaining $0.6 \mathrm{m}^{3}$ is filled with air. The average temperature and pressure in the kitchen are $20^{\circ} \mathrm{C}$ and $95 \mathrm{kPa}$, respectively. Also, the moisture contents of the air in the kitchen and the refrigerator are 0.010 and $0.004 \mathrm{kg}$ per $\mathrm{kg}$ of air, respectively, and thus $0.006 \mathrm{kg}$ of water vapor is condensed and removed for each kg of air that enters. The refrigerator door is opened an average of 20 times a day, and each time half of the air volume in the refrigerator is replaced by the warmer kitchen air. If the refrigerator has a coefficient of performance of 1.4 and the cost of electricity is 11.5 cents per $\mathrm{kWh}$, determine the cost of the energy wasted per year as a result of opening the refrigerator door. What would your answer be if the kitchen air were very dry and thus a negligible amount of water vapor condensed in the refrigerator?

So in the first part of this problem are a. We will first find it removed, which is equal to it's one minus. It's four, which is equal to well subdued. The values Twenties 402.49 College Park a G minus H four is 243.19 John Burke itchy so he to mood will be eager to When it's a practice, we get 159.3 que no job perk edgy, which is answer the first part off your question. In the first part, we have to find other thing is working books, which is equal to s two minuses win. And here is two years ago, 254 minus 402.49 When we saw this, we get we work Input is equal to 51.51 killing John Perkins. Gee, which is the second answer? The second part of the first question I mean third portion we have to find Seop and C o P is equal to hate you Move, divided by working put as hit remote is equal to 159.3 and working Put his 51.51 kill. It'll perk edgy. So when we do at this, we get Seop in. The first part of the question is go to three point 09 Yeah. Now we will come toward the second part part of me off this question in part B, We first of all find hate to move, which is again equal to each one. My message for and here it's one is equal to 399.4 Killer Joel R K G minus 249.8 kills all Perkasie. And we saw this. We get hit. Two more is equal to 149.24 Killer Joel. Where k g. Now we will find work. Input, which is equal to again, is to minus one. Where s two is goingto 440.71 minus H one is 399.4 Collegial park egy. When we suppress this, we get 41.67 kill Ojul. Perky is the work input. Now we will find Seop, which is equal to heat remote. Do it by working. Put So we secured the values. 149.24 fills your package. Do it by 41.67 kg per cagey. When we saw this We get Seop in this case is go to 3.5 pH, yeah.

Hi, everyone. This is a problem based on car notes cycle. Here it is, given that the cooling output okay and required electric electrical energy input. Mhm both are and do it, so coefficient of for four months will be mhm you. The energy efficiency issue is given by uh huh right. Yeah. Mhm, Yeah, yeah. You see your point of look you see to be taken And we are too. What should we take? A rain? Whatever. Yeah, yeah. Mhm. Yeah. What? What over is three point forward? We get you. So energy efficiency is showing me 3.41 Okay, sure. Be part. Uh huh. Temperature of heart to be 9500, That is 308.15 Calvin, the creator of Golden Centobie. 80%. So 84 night. That is to 99.82 Calvin. So coefficient of performance each country right? 99.82 Okay. Mhm. All right, 13 point point 19. Okay, So energy epicenter issue for car, not device. Mhm. Working on the given temperature. Uh, he r will be 3.41 and two. 13.993 That is 1 22.74 Thanks. No, she part given. Is she bit energy efficiency? The shoe 10 19 Cooling output. Wow. Each 1.9 and 10 to the power. 10 Jule per year. Mhm e r. It's 10.9. That will be 3.41 end up and two copies it of our governments. So coefficient of performance, You will get 10.9 upon 3.41 which is equal to he. Was he upon you Add minus security. Mm. Yeah. Substituting the value. Yeah. Mm. Mhm. Mhm. Hence. Right. She'd transferred to go off Argentine. You will get 14944 George per year. Well, yeah. Wow. Oh, 619289 two. Can you? Whatever. What are you? The cost of electricity is given. Yeah. Uh huh. Yeah. 15.3. Search 20 people. What other so expenses for? Is he in one year? Mm, yeah. Mhm. 15.3% to 6 point 9289 10 to the poverty. So it is €1.60 rope dollars per year. Mhm. Oh, no. Deeper if Fuck yeah. New machine. E r art is 14.6. Yeah. You see, it's 19. 1.9 and took 10 to the power 10 during four years, so e R will be three point four. But kid Okay, maybe e r R over 3.41 Here is a cure. Seek upon you. Edge my rescue C It's cool to 14.6 a 0.3 point 41 Substituting the Velo Juicy is given 1.9 10 to leave our 10th Jule per year Que ph 1.9 june per year. 14.6 of 13.41 So June HTV Puerto 6.5, 105. 10 to the power. Okay, June per year. Or you can convert and grow What? Our So it is to be 6.5105 Okay, including power. Three global tower per air. You are So expenses of new music. No. Yeah, and one year Mm. And 2.13 and 26.5 105 10 to the power. Okay, It is to be 996 the dollar per year. So saving per year you will get Yeah, $64 per year. That's all. Thanks for budget

Okay, So this problem is mainly about, uh, applying the ideas of, uh, heat engines, efficiency, whatever to something. And you might actually be particularly interested in in your day to day life, which is how much on a c, uh, will cost you. I'm sorry. That wasn't a c, right. Oh, refrigerator or conditioner. Okay. So basically, they first part, they want you to start out by converting, um, the traditional coefficient of performance too. This e r, let's see, was e r stand for gun energy efficiency ratio. And the big difference between K and E. R is e ers and units of BTU per watt hour, so you have to convert them. So that's part A So I e r equals K, which has units of, um, you know, Jules, her jewels. So it doesn't have any unit, but, um, it's I think it's easiest to write it this way. And you look in your book. You have the converted conversion. The goal is to get beat to you. For what? Our rate. So you go into your book to get the conversion of jewels. Bto, you got one? Um, one rule is Excuse me. One ptu is 10 55 jewels. Oh, my fives. And then sew together two watt hour. You want to consider how many jewels were burned for, um, for something burning at one watt. So that's one Jule per second for 3600 seconds. I'II an hour. So that's just gonna be Ah, 3600. Um, excuse me to be careful with this. I get such a simple calculation, but I actually struggled a little bit, Um, as I as I wrote this. So, yes. So then one what hour is actually 3600 jewels? Because that's how many jewels you burn if you're burning at one. What Montreal per second for 3600 seconds. Okay, so if you compute this, hopefully get what I got Actually got the wrong thing at first again because I kind of stumbled in that, um, logic on. So that's 3.1441 Excuse me? Pie stuck in my head sometimes. Case. So that's how you convert it. You just do K. Times 3.41 when that comes in handy in the next problem. So you need to calculate the e r. Um, for Was that an a C wasn't. Yeah, and a c um, that operates between 95 Edie. So it's K times three point for one and then K Ah, if you go to the formula in the book, chapter 20 Um, I think it's what the Andrews says. It's K Is this t c over th minus t c for a carnot engine. And that's what you're assuming that you're You're a C is, um, and then your tea cold is 80 plus 2 73 So I'll write that down T. C. Right. You need to convert to Calvin. Andi, Um, tea hot is 95 plus 2 73 Oops. Wow. What was I thinking? As I wrote that, maybe it's it's not trivial maybe to talk as I write. Okay, so 2 73 75 on dhe. If you compute, that's a stick. All these numbers in here, hopefully you'll get what I got for. Maybe you won't. I don't know. Um, which is 80. Yeah, I'm just going double track my calculations. Sometimes I get the impulse to do that. Um, yes, and it's tea cold, right? I'm just gonna double check the formula, too, while I'm at it. Yes, it is. Okay, great. My numbers ended up coming out pretty reasonable. Um, so I feel confident it. Um Okay, so, yeah, that's what I got. So now, for part C, it's asking for an a C. It's asking for how much it costs to run in a C for a whole year. That has in the e. R of 10.9. Okay, and then it's QC per year is, um, 10 1 was up 1.9 times 10 to the 10. So side note, um, I they completely ignored the fact that kay was written as qc overwork and both of murder out of my time. Um, probably a different way to think about it. If you do include that fact. Oh, my many of reasoning, but I didn't see any particular reason. Andrew, maybe I'm missing something. I don't know. Uh, anyway, so So our goal is to get how much energy is output so that we can figure out how much it cost so you can rearrange the um e. R is 3.141 times k k is qc over, um, work. And to obtain that work is Q c divided by E. R. And, um, keep in mind that if we're gonna use he are that has to be immune to be to you. And then this has to be in units of B T U per watt hour so that our work will come out in what hours we could easily convert. So we need to convert the heat to be to you. So we need to do that. Um, by dividing by 10 55 jewels per be to you. Um, so that was that's, like the heat that we should actually plug in. And then our years 10.9. So when I put that and I got 1.65 What, Like the stroke delay punishes me for going fast times turn to the six. What hour? Or maybe it's just that I decrease the pressure of the pen as I get past. That's probably it because I could do that. Yeah, I guess it pretty accurately. I don't know, Drew What I met. Okay, so 1.65 watt hours, and then, um now to get the price, we need to convert it to kilowatt hours, and then and then you acknowledge that you do a unit conversion to get the price. Given that it's 15.3 cents, it's for kilowatt hour. So then that's 1000 watts per one. Kill What? So now the what units will cancel, and I'll just show it. Although if you're already here, you're probably pretty good. It, um, unit conversion. But you never run out. Um m and Bugs. I'm just gonna convert it to, like, dollars. So it's, you know, 15 cents is, you know, $150.15. Um, her one kill what? And then the oh, the kilowatts cancel gay. And then we're just, like, left with dollars. So when I computer that I only brought these numbers down a bit, I got to 52 dollars, 1 79 cents. And then the next part asks you to calculate, um, what the price difference is if you have a different e. R in the e r. Waas. Um, what was that? 14 0.6. Okay, so basically, they're like, redo the calculation and PR is 14.6. How much do you save? So I'm not gonna write that out. I think we have a waist. I'll just kind of clearly, you know, highlight that when you're doing the calculation. Um, just switch this out for this is not 14.6. Um, and when I did that, I got, um, see, what did I got it? I got it. 180 eights dollars in 73 cents. Um, and so the difference between those two C $4.6. So this is a funny sign. It looks like it could be eliminate e or something is Ah, 60 64.3 domes.

Hello, friends. Here it is. Given an ideal, they're per compression refrigeration cycle. Yeah. Using ammonia as the refrigerant, we have to fight volume, florid off compression input, power input, coefficient of performance. Second every sensi and rate off total exercise destruction. So we have to use the property off ammonia as given in the problem. So already is that it is given in that statement. Using properties off, Harmonia has given in a statement heat transfer at heart function or high temperature. Rachman minus 84 1439.3 minus 4. 37 point for all these pills are given. Just we have to substitute so mass flow rate off foot power output upon he transfer at heart function 18 glow, but upon 1361 So it is quite zero 1323 kg per second. She so volume flow rate must floor it in tow. Specific volume. Find Jiro. Well, toe Sorry. 1323 in tow 0.59 46 So if we will get the answer, why did Jiro Jiro 7865 meter que per second? This is the first cancer off part. A no part we that power input mass flow rate in toe edge to minus H one mass floor. It is 0.0 1323 as to is 1798.3 minus 1439.3. So power and put Bilby 4.75 Glove. What? This is the answer off, people. No coefficient off Performance. Amount of the heat transferred. Sorry. Amount of the heat absorb at low temperature. Toe power input 13.25 upon 4.75 So it is to be 2.79 Yeah, The yeah. Ex Sergiy transferred from low temperature. Media rate off X sergi. Transfer at low temperature. A raid off. He transferred at low temperature into one minus. I mean temperature upon low temperature. Substituting the value you will get minus 13.25 and to one minus 300 upon to 64. So it is to be 1.81 clover hands second of efficiency. You will get xer gee off heat transfer at low temperature toe power input 1.81 upon 4.75 So it is to be 38.1 person now on set off a part Total X sergi destruction total. We have to find so power and put minus ex Sergiy at low temperature. So 4.75 minus 1.81 So 2.94 clover, that's all. Thanks for watching it.


Similar Solved Questions

5 answers
Certain tenctic nsecond OrolerNz ana second onctrUse this infonmationcomplcte trtdigits _RoundreacnYour ansurtnstaniacant["] unknreactlon740 V1.600xiaOM0.5730xts0'
certain tenctic n second Oroler Nz ana second onctr Use this infonmation complcte trt digits _ Roundreacn Your ansurtns taniacant ["] unkn reactlon 740 V 1.60 0xia OM 0.573 0xts 0'...
5 answers
Question 6 View: Policies Current Attempt in ProgressIn the hgure. 110-turn coil of radius 2.5 cm and resistance 5.5 Qiscoaxial with a solenoid of 190 turns /cm and diameter 34cm. The solenoid currentdrops from 1.7 Ato zero time interval &t 32 ms What current is induced in amperes in the coil during Lt?domcTicici-iai- - -ooonjsst ^Icr DDDDDDD Ccl NumberUnitseTextbook and MediaSavenc LaterAttempts: O of 3 used Suomit aigwet
Question 6 View: Policies Current Attempt in Progress In the hgure. 110-turn coil of radius 2.5 cm and resistance 5.5 Qiscoaxial with a solenoid of 190 turns /cm and diameter 34cm. The solenoid currentdrops from 1.7 Ato zero time interval &t 32 ms What current is induced in amperes in the coil d...
2 answers
With the same data points as in question 2;ie [3,2,-1,0] Fit a cubic spline through these points. Since we know the function is smooth and symmetric about the Y-axis we can uSC condition of zero slope at thex-0 point Use natural spline condition at the x=-3 Point Show your work, although you can use MatLab to solve the matrixWhat is the error of the interpolation at x = ~1?
With the same data points as in question 2;ie [3,2,-1,0] Fit a cubic spline through these points. Since we know the function is smooth and symmetric about the Y-axis we can uSC condition of zero slope at thex-0 point Use natural spline condition at the x=-3 Point Show your work, although you can us...
5 answers
Predict the preferred product(s) of the following reaction by drawing the structure(s) in the box:CH;mCPBADraw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges); Atoms; and Templates toolbars1) Correct answer has 2 structures2) Show stereochemistry of the products using dashed andlor wedge bonds
Predict the preferred product(s) of the following reaction by drawing the structure(s) in the box: CH; mCPBA Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges); Atoms; and Templates toolbars 1) Correct answer has 2 structures 2) Show stereochemistry of the pro...
4 answers
2 ptsQuestion 57Computc the rclative trequency for the category called Agree; Cateaon Agree Disagret JontAnoyFrequencyRenott the relative (rcqucncy WdccimalrolncedccunalelicosQugation 582 ptMatch Lhe proper detcrlation tha wuanpla Hod . rentonable poqulutlon that Uie Ewnpla teprasontelor the (olloxang at-temnent: Wnsy 500 Canudtan Mulla panticip,lta Tlete UnY ae proticient mlanca WustruxriongS[Cme[cncos |
2 pts Question 57 Computc the rclative trequency for the category called Agree; Cateaon Agree Disagret JontAnoy Frequency Renott the relative (rcqucncy Wdccimalrolnced ccunalelicos Qugation 58 2 pt Match Lhe proper detcrlation tha wuanpla Hod . rentonable poqulutlon that Uie Ewnpla teprasontelor the...
5 answers
The vapor pressure of water at 176 F is OA 5.00 atm 0B: 1.00 atm 0C. 200 atm 0 D 0.48 atm @E: 120 atm
The vapor pressure of water at 176 F is OA 5.00 atm 0B: 1.00 atm 0C. 200 atm 0 D 0.48 atm @E: 120 atm...
5 answers
19 What is the next term in the geometric 4, 1 sequence: 16, 1, L 2 4A_ S 1 8 B. C 1 D. E.
19 What is the next term in the geometric 4, 1 sequence: 16, 1, L 2 4 A_ S 1 8 B. C 1 D. E....
5 answers
A plant's xylem and phloem are ________ tissues.a. vascularb. sensoryc. respiratoryd. digestive
A plant's xylem and phloem are ________ tissues. a. vascular b. sensory c. respiratory d. digestive...
5 answers
For a reaction A + B âž” C, the rate law is R =k[A]2[B]2. What is the change in rate whenthe concentration of A is doubled and the concentration of B istripled.
For a reaction A + B âž” C, the rate law is R = k[A]2[B]2. What is the change in rate when the concentration of A is doubled and the concentration of B is tripled....
5 answers
8.15 A spin-[ /2 particle is placed in magnetic field pointing in the +x direction which produces a Hamiltonian H @S,, where @ is & constant with units of frequency: At = 0. the particle is pointing in the +z direction: Derive an expression for the spin vector aS a function of time
8.15 A spin-[ /2 particle is placed in magnetic field pointing in the +x direction which produces a Hamiltonian H @S,, where @ is & constant with units of frequency: At = 0. the particle is pointing in the +z direction: Derive an expression for the spin vector aS a function of time...
5 answers
A secret agent team has to use a slingshot to fire a tinypackage from the roof of the building (80 m tall). The package isfired at an angle of 40o below the horizontal and goes into awindow 65 m below the roof with a flight time of 3.0 s. (a) What isthe initial speed of the package? (b) What is the horizontaldistance between the buildings? (c) What is the velocity of thepackage as it enters the window? {10.8 m/s, 24.9 m, 37.3 m/s, 77.1obelow the horizontal}
A secret agent team has to use a slingshot to fire a tiny package from the roof of the building (80 m tall). The package is fired at an angle of 40o below the horizontal and goes into a window 65 m below the roof with a flight time of 3.0 s. (a) What is the initial speed of the package? (b) What is ...
5 answers
You dissolve 31.83g of an organic compound that is 49.3%C,6.9%H, and 43.8%O by mass in 863.5g of cyclohexane. The freezingpoint of this solution is 1.34°C. The freezing point of purecyclohexane is 6.59°C. What is the molecular formula of the organiccompound? Kf for cyclohexane is 20.8 °C/m.
You dissolve 31.83g of an organic compound that is 49.3%C, 6.9%H, and 43.8%O by mass in 863.5g of cyclohexane. The freezing point of this solution is 1.34°C. The freezing point of pure cyclohexane is 6.59°C. What is the molecular formula of the organic compound? Kf for cyclohexane is 20.8 °...
5 answers
Find a matrix A whose inverse is B = ~1 True or false? Justify your answer. All matrices are n X n If the equation Av =b is consistent; then A is invertible If the columns of A are linearly independent, then A is invertible. If det(A) = 2, then det(3A)
Find a matrix A whose inverse is B = ~1 True or false? Justify your answer. All matrices are n X n If the equation Av =b is consistent; then A is invertible If the columns of A are linearly independent, then A is invertible. If det(A) = 2, then det(3A)...
5 answers
Find the sum of the finite sequence: 4,2,0,-2, - 4,A) 12C) 4B) 0D) 1
Find the sum of the finite sequence: 4,2,0,-2, - 4, A) 12 C) 4 B) 0 D) 1...
5 answers
(6 pts) Consider the following limits sin 4x lim r+4-5 lim 4+3 III lim 140 ~2+2 1 IV . lim 0-9 XFVi-6 lim 5o e+2 VI, lim I7-0 0+2List which limits can be calculated by using 'Hopital'$ Rule as the mert stcp without any Other algebra Or modification:
(6 pts) Consider the following limits sin 4x lim r+4-5 lim 4+3 III lim 140 ~2+2 1 IV . lim 0-9 XFVi-6 lim 5o e+2 VI, lim I7-0 0+2 List which limits can be calculated by using 'Hopital'$ Rule as the mert stcp without any Other algebra Or modification:...

-- 0.040393--