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Write a 3 page essay on Evaluation of the Visual Environment.

Knowledge of these properties makes it possible for people understand, analyze and design interactions between objects, surfaces and light. The difference in the behaviour of light on different surfaces defines its properties. While discussing the various properties of light, this essay will consider a bathroom and how light behaves on different surfaces in the bathroom.

Bathrooms differ according to people’s tastes and preferences. while some are small, others are large. However, a typical bathroom approximately measures 2.5 meters in length by 1.5 n in the breath. Although the finishing of bathrooms differs substantially, this paper will consider a standard bathroom with white walls, furnished with white tiles and a grey floor. From the ceiling is gypsum fitted with warmly lit bulbs to offer adequate light for the person bathing. A door made of transparent glass opens to a hallway fitted with a dressing table made of marble on one side, with a huge mirror standing on one side of the table. Different things stand on the table, with a glass vessel holding a couple of bathing soaps, ointments and apparatus. A dark curtain ensures the privacy of the person bathing. In the bathing cubicle, fitted on three walls are mirrors standing from the floor to the top of the ceiling.

Light naturally travels in straight lines and as such behaves differently whenever it lands on different surfaces (Vandergriff, n.d). While some reflect light in the bathroom, others absorb it, others refract and others transmit light. Mirrors are made of extremely smooth surfaces and as such, they reflect light at the same incidence at which it lands on the mirror. Whenever light hits a mirror, it bounces off, and as such, this forms the image that people see whenever in front of a mirror. While the mirror reflects light due to its smooth surface, tiles do not form images since their surfaces are not as smooth.&nbsp.Instead of tiles reflecting light at the same angle at which it lands on their surfaces, they reflect it at different angles, a reason why there is no resultant image from these surfaces.&nbsp. &nbsp.

 

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July 26, 2021by

write my assignment 5480

Read: Module 1 information, Chapters 1, 3, 6 (Creswell, 2013).

Identify and analyze a phenomenon which you might use related to your business degree that can be studied using qualitative research techniques.

Provide a brief statement of the identified phenomenon and describe the sample (including who or what will be sampled, how many people will be involved, what type of sampling strategy will be used).

Based on the seven points presented in the article, discuss why the phenomena you identified would be best explored using a qualitative methodology

Pleases deliver the answer by the due date/ 12 hours NO cover or tittle or even Reference page , this assignment will be submitted to Turnitin® No copy or matching will be accepted.

Thank you 

 

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July 26, 2021by

write my assignment 6448

Social Security in the U.S. is often the most significant income program available for the elderly. When looking at replacement income for prior earnings, note that the United States ranks 26th on the list, while Greece is 3rd. What are some of the causes of this variance? Keep in mind that Greece has recently had its national debt restructured by the European Union to avoid national bankruptcy. What is the role of its Public Pension Replacement Rates on its debt burden? Support your reasoning with information from the text and from at least two other academic resources, one of which is an article you obtained from the Ashford Online Library. Make sure to cite your sources in the text and on the reference page in proper APA format. Your paper must be two to three double-spaced pages in length (excluding title and a reference pages).

 

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July 26, 2021by

write my assignment 30088

Question 1: A helium balloon consist of a large bag loosely filled with 600 kg of helium at an initial temperature of 10 degrees Celsius. while exposed to the heat of the sun, the helium gradually warms to a temperature of 30 degrees Celsius. the heating proceeds at a constant pressure of 1.0atm. how much heat does the helium absorb during this temperature change?Solution heat absorbed at constant pressure = >mCp*dTmass of helium = 600 kgCp helium = 5.19 kJ/kgKdeltaT = >30 -10 = 20Q => heat absorbedQ => 600 x 5.19 x 1000 x 20Q = 62280 kJ

Question 2: A large closed bag of plastic contains 0.10 m^3 of an unknown gas at an initial temperature of 10 degrees Celsius and at the same pressure as the surrounding atmosphere, 1.0 atm. You place this bag in the sun and let the gas warm up to 38 degrees Celsius and expand to 0.11m^3. During this process, the gas absorbs 840 cal of heat. Assume the bag is large enough so the gas never strains against it, and therefore remains at a constant pressure of 1.0atm.A) how many moles of gas are in the bag?PV=nRT

1*0.1 = n *8.314*283n = 0.1/8.314*283= 4.25*10^-5 mol. 

B) what is the work done by the gas in the bag against the atmosphere during expansionw=PextΔV = 1* ( 0.11 – 0.10)= 0.01 JC) What is the change in the internal energy of the gas in the bag*same as work done*

D) Is the gas a monoatomic gas? A diatomic gas?Diatomic, pressure remains constant=> characteristic of a diatomic molecule/gasQuestion 3: A Carnot engine has 40g of helium gas as its working substance. it operates between two reservoirs of temperatures T1 = 400 degrees C and t2 = 60 degrees C. The initial volume of the gas is v1 = 2.0 x 10^-2 m3, the volume after isothermal expansion is v2 = 4.0 x 10^-2 m3, and the volume after the subsequent adiabatic expansion is v3 = 5.0 x 10^-2 m3.a. Calculate the work generated by this engine during one cycle.b. Calculate the heat absorbed and the waste heat ejected during one cycle.Solution(a)…….. mass of the He  gas, m =>  40 g

 T1 = 400°C => 673 K

T2 = 60° C => 333 K

v1[initial vol.] = 2 x 10-2 m³

vol. of the gas after isothermal expansion, v2 = 4 x 10-2 m³

vol. of the gas after adiabatic expansion, v3 = 5 x 10-2 m³

no. of mol, n = m /mm =>  40 /4 = 10

but, for an isothermal expansion;

work done by a carnot engine is given as,

Wiso = n R T log (v2 / v1)……………..(eq. 1) 

where, R = gas constant => 8.314 J/mol.K

T = initial temperature = 400° C

inserting all these values in above eq.

Wiso = (10) (8.314 J/mol.K)*(400 0C)*log [(4 x 10-2m3)/(2 x 10-2 m3)]

Wiso => 23046.4 J

For an adiabatic expansion :

work done by a carnot engine is given as,

Wad = n R (T2 – T1) / (k – 1)…………….. (eq. 2) 

where, k = 1.4   <=> for monoatomic gas

Wad = (10)*(8.314 J/mol.K)* [(333 K) – (673 K)]/(1.4 – 1)

Wad = – 3040 J

(b)……… 

DeltaW = Wiso + Wad………….. ( eq. 3) 

inserting the value in eq.3

DeltaW => (23046.4 J) – (3040 J)

DeltaW = 20007 J

DeltaW = 2 x 104 J

Question 4: On a hot day a house is kept cool by an air conditioner. The outside temperature is 32°C and the inside temperature is 21°C. Heat leaks into the house at the rate of 9000 kcal/h. If the air conditioner has the efficiency of a Carnot engine, what is the mechanical power that it requires to hold the inside temperature constant?Solution Carnot Efficiency = 1 – Tlow / ThighCarnot eff => 1 – (273+21)/(273 + 32) = 0.036For maintaining temperature, Heat rejected => 9000 kcal / hrEfficiency => Work / (Work + Heat rejected)0.036 = Work / (Work + 9000)Work = 336.7 kcal/hr = 336.7 kcal / (60 × 60) s = 0.0935 kcal/s = 391 W

Question 5: In a nuclear power plant, the reactor produces team at 520 degrees C and the cooling tower eliminates waste heat into the atmosphere at 30-degree C. The Power generates 500 megawatts of electric or (mechanical) power. 

A. If the efficiency is that of a Carnot engine, what is the rate of release of waste heat (in megawatts).  Solution For carnot engine efficiency  => n = 1 – T2 /T1 => Power generated (W) /heat supplied (Q1)T2 = lower temp = 30°C => 273K + 30 = 303KPower gen. => W = 500*106 WQ2 = heat vented out = Q1 – Wfrom the above eqn.  = n = 1 – (303/793) = (1500*106)/Q1==> 0.6179Q1 = 1500*106Q1 = 2427.55MW

B.  Actual efficiencies of nuclear power plants are about 33%. For this efficiency, what is the rate of release of heat? 

Rate of release;33/100*2427.55 = 801.092 MW per hrRate in sec. ;801.092/3600 = 0.2225MW per sec

 

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July 26, 2021by