0.1 kg of air (ideal gas) is contained in a closed, rigid tank of volume 0.04 m^3 at 500 K. A paddle wheel stirs the air and transfers energy to the air at a constant rate of 1 kW for 100s. The temperature of the air increases to 600 K.

(a) What is the final pressure of the air (kPa)

(b)Calculate the heat transfer (kJ) for the process (use a constant, average specific heat)

0.1 kg of air (ideal gas) is contained in a closed, rigid tank of volume 0.04 m^3 at 500 K. A paddle wheel stirs the air and transfers energy to the air at a constant rate of 1 kW for 100s. The temperature of the air increases to 600 K.

(a) What is the final pressure of the air (kPa)

(b)Calculate the heat transfer (kJ) for the process (use a constant, average specific heat)

A closed, rigid tank fitted with a paddle wheel contains 2.2 kg of air, initially at 200oC, 1 bar. During an interval of 20 minutes, the paddle wheel transfers energy to the air at a rate of 1 kW. During this time interval, the air also receives energy by heat transfer at a rate of 0.5 kW. These are the only energy transfers. Assume the ideal gas model for the air, and no overall changes in kinetic or potential energy. Do not assume specific heats are constant. Determine the change in specific internal energy for the air, in kJ/kg, and the final temperature of the air, in oC. The answer to the change in internal energy is 818.2 kJ/kg. find the final temperature of the air, in ^oC.

You and your family have recently closed on the purchase of your first home and you are excited. You are in need of furniture and appliances for your new home. You have decided to purchase some of the items from eBay and have found a dining room set and living room furniture from a private seller on eBay’s website. You look at the pictures on the website and notify the seller through email that you would like to purchase these items. The seller responds and asks you if you have any more questions about the furniture and agrees to sell you these items. You pay for the furniture with your bank debit card via PayPal’s website electronically. The seller then has the items shipped to you at your new home. When the furniture arrives, you discover that the sofa is severely damaged on the backside and you contact the seller for a refund. The seller refuses to refund your money and states that the items were sold as-is. What recourse, if any, do you have?

In an essay, answer the following questions:

• Describe what criteria must be present to constitute a legal and binding sales contract.
• Briefly summarize the uniform commercial code and if it applies in this scenario.
• Explain if any criminal laws have been violated as it relates to cyber laws.
• Develop and explain your legal strategy to gain a refund of your money.
• What rights do you have with your bank, eBay, and PayPal

Scenario 26-A. Assume the following information for an imaginary, closed economy. GDP = $110,000 Consumption = $70,000 Private Saving = $8,000 National Saving = $12,000

1. Refer to Scenario 26-A. For this economy, what is the tax amount? Show your work.

2. Refer to Scenario 26-A. For this economy, investment is what amount? .

3 Refer to Scenario 26-A. In this economy is the government running a Surplus or Deficit and what is the amount?

4. Refer to Scenario 26-A. For this economy, government purchases are what amount? Show your work.

Design a steam power plant that works as an ideal Regenerative Rankine cycle with 2 closed feedwater heaters cascaded backwards by selecting their extraction pressures to optimize cycle efficiency. The available steam conditions at the exit of the boiler are 3 MPa and 590 °C and the condenser pressure is 20 kPa. The steam flow rate at the inlet of the turbine is 80 kg/s. A T-s diagram for the cycle should be provided along with a table showing the pressure, temperature, enthalpy and entropy of all the states at the optimized point. Also, mention the net power output and rate of heat rejected from the cycle as well as the fractions of the working fluid extracted for each feedwater heaters at the design point.

5.Chromebooks.After schools closed for the remainder of the year, many school districts in Pa.were able to issue Chromebooks to families. In a random sample of 150 families in the Abington School District, 120 reported that they were able to receive Chromebooks. In a random sample of 180 families in theDowningtownAreaSchool District, 130 were able to receive Chromebooks.

a. Perform a 99% confidence intervalforthe differencein the trueproportion of families who receive Chromebooksin Abington andDowningtown School Districts.

b. Based on your interval, is there a possibility that the difference between the two true proportionscould be zero? Explain your answer.

c. Based on your previous answers, what would be your conclusion of a difference between the true proportions? (Would you fail to reject, or reject?)

A closed rigid tank contains 2 kg of water at 80 C and
quality of 0.5815. The tank is then heated until it contains only
saturated vapor. How much heat (in kJ) is added to reach this
condition? Include a drawing and plot the process on a P-V
diagram.

Organize the solution as
Given and drawing:
Assumptions:
First Law Analysis:
Solution:
PV diagram:

1. The following data, expressed as $10⁴, are the closed ledger accounts showing assets, liabilities, income, and expenses of Blue River Fabricators, Inc., a family owned firm that does not declare dividends. Prepare an income statement and balance sheet for the year. (Hint: some items belong to balance sheet and some are part of income statement) (3 points)