Question

In: Physics

The Kwik-Freez Appliance Co wants you to design a food freezer that will keep the freezing...

The Kwik-Freez Appliance Co wants you to design a food freezer that will keep the freezing compartment at -5.00?C and will operate in a room at 20.0?C. The freezer is to make 5.80kg of ice at 0 ?C, starting with water at 20.0?C.

a) Find the least possible amount of electrical energy needed to make this ice

b) Find the smallest possible amount of heat expelled into the room.

Expert Solution

I have solved this question earlier with different figures. Please workout using yours figures. If you need any further help just PM me. If I have helped you please rate me 5 stars first (before you rate anyone else)

The Kwik-Freez Appliance Co wants you to design a food freezer that will keep the freezing compartment at -5.00?C and will operate in a room at 20.0?C. The freezer is to make 4.20kg of ice at 0 ?C, starting with water at 20.0?C.

Find the least possible amount of electrical energy needed to make this ice.

Find the smallest possible amount of heat expelled into the room.

For thesmallest amount of electrical energy:

Q_in=(4.20kg)(4190J/kg*K)(20K) +(4.20kg)(334*10³J/K)

Q_in=1.76*10⁶

Carnotcycle:

Qin / Tcold = Qout / Thot

1.76 x 10^6 / 268 = Qout / 293

Qout =

Q_out =1.92*10⁶ J (into the room)

W =Q_out - Q_in =1.92*10⁶ J -1.76*10⁶ J

W =0.16*10⁵ J (electrical energy)

genius_generous answered 5 months ago

Your design team has developed a food chopping appliance. Write a one paragraph description of the...

Your design team has developed a food chopping appliance. Write a one paragraph description of the verification tests and a one paragraph description of the validation tests.

You want to design a magnetic device to keep cupboard doors closed. What are the design...

You want to design a magnetic device to keep cupboard doors closed. What are the design consideration? Suggest suitable materials that may be used.

You are given an old car by your uncle, who wants you to keep it in...

You are given an old car by your uncle, who wants you to keep it in working condition so that you can hand it off to your younger brother in three years. It will cost you $1,500 per year to keep it in working condition for your brother. If you skip maintenance altogether, the car will die after two years, but you can pocket the maintenance costs. a. What will you be tempted to do? Not do the maintenance, because...

You are tasked to design an application to keep track of sales for your company. Sales...

You are tasked to design an application to keep track of sales for your company. Sales should be tracked for two types of accounts: supplies and services. Complete the following: Create a UML class diagram for the Account inheritance hierarchy. Your subclasses should be Supplies and Services. All sales accounts will have an account ID (accountId). You will need attributes to keep track of the number of hours (numberOfHours) and rate per hour of services provided (ratePerHour)....

You will design a program to keep track of a restaurants waitlist using a queue implemented...

You will design a program to keep track of a restaurants waitlist using a queue implemented with a linked list. Make sure to read pages 1215-1217 and 1227-1251 1. Create a class named waitList that can store a name and number of guests. Use constructors to automatically initialize the member variables. 2. Add the following operations to your program: a. Return the first person in the queue b. Return the last person in the queue c. Add a person to...

You work for an international food and beverage company, and the CEO of the company wants...

You work for an international food and beverage company, and the CEO of the company wants to introduce a new product in the US market for 2021. Your team is charged with the following tasks: Develop a new food/beverage product concept that can be brought to market by 2021. The product should have broad appeal for the US market (i.e., nothing illegal or distasteful). Present a five-year marketing plan to upper management that includes a description of the product, a plan...

Assume that you are a consultant for a marketer who wants to design a package for...

Assume that you are a consultant for a marketer who wants to design a package for a new premium chocolate bar targeted to the market. What recommendations would you provide in terms of such package elements as color, symbolism, graphic design, smell, and sound? Give the reasons for your suggestions based on the knowledge you acquired during your consumer behavior course.

Suppose you are a consultant for a marketer who wants to design a new packaging for...

Suppose you are a consultant for a marketer who wants to design a new packaging for a premium chocolate for the high-income market. What color, logo, design graphics would you recommend? Give your suggestions an explanation. Use knowledge related to customer COGNITION to make the right recommendations.

Plan for a solution by drawing a flowchart EFG Co wants you to develop a C++...

Plan for a solution by drawing a flowchart EFG Co wants you to develop a C++ program to calculate the total invoice based on the user inputs item price and the quantity of the item purchased, taking into consideration the discount given for each category as follow: Less than 10 Item: No discount Between 10 and 20 items: 10 % off the item price More than 20 items: 20% off the item price.

The Good Life Insurance Co. wants to sell you an annuity which will pay you $650...

The Good Life Insurance Co. wants to sell you an annuity which will pay you $650 per quarter for 20 years. You want to earn a minimum rate of return of 5.0 percent. What is the most you are willing to pay as a lump sum today to buy this annuity?