Problems 1-5 are from ‘Applied Thermodynamics - For Engineering Technologists’ by Eastop TD & McConkey‚ page 325. Problem 1 Calculate the throat and exit areas of a nozzle to expand air at a rate of 4.5 kg/s from 8.3 bar‚ 327 0C into a space at 1.38 bar. Neglect the inlet velocity and assume isentropic flow. 3290 mm2; 4840 mm2 Problem 2 It is required to produce a stream of helium at the rate of 0.1 kg/s travelling at sonic velocity at a temperature of 150C. Assume isentropic flow‚ negligible inlet
Premium Thermodynamics Heat
Ecological Problems Chapter 1 Ecology is a very popular word today. But what does it mean? Ecology is a since which studies the relationship between all forms of life on our planet and the environment. This word came from Greek “oikos” which means home. The idea of home includes our whole planet‚ its population‚ Nature‚ animals‚ birds‚ fish‚ insets and all other living beings and even the atmosphere around our planet. Since ancient times Nature has served Man giving everything he needs: air to breathe
Premium Carbon dioxide Greenhouse gas Global warming
• Introduction Telstra is one of the Australia’s leading telecommunications provider. For many years Telstra owned monopoly in telecommunication market. A change in government policy to reduce the monopoly power of Telstra has resulted in many problems. Telstra is following Classical approach of management as it seeks to achieve effectiveness by focusing on task efficiencies i.e. focusing on their next G wireless broadband and not on external stakeholders (Schermerhorn‚ Davidson‚ Poole
Premium Management Strategic management
Referencing: how to be polite to your sources You will remember that when you were doing research for your essay by means of interviews‚ reading library books and searching on the Internet‚ you were always told to keep records of your sources. Now you have come to the point where you are going to include the facts and ideas that you have obtained from places other than your own mind in your essay. This is called referencing and it entails the avoidance of what can be termed “ripping off”. It is
Premium Citation Quotation mark Quotation
In Address of the President Delivered by Radio from the White House - May 7‚ 1933‚ President Franklin D. Roosevelt considered the economic and society problems faced in 1933 were because the government did not interfere in American businesses such as industries‚ transportation‚ and farming which led to the Great Depression. The American economy’s trade and commerce had declined as the value of the dollar was unstable to the point where houses and businesses were being foreclosed and banks could not
Premium Franklin D. Roosevelt United States Great Depression
Problems with PPACA: Higher Costs PPACA has touted new benefits without measures to cut cost.1 One should know that in America there are already federal laws and programs to cover the elderly (Medicare)‚ the poor (Medicaid)‚ and uninsured children (CHIPs)‚ In addition there is basically free or low cost care to anyone who needs it and it is available if one looks for it. Examples include: Shriner’s hospitals‚ free clinics‚ and providers who do pro bono work. In case that wasn’t enough‚
Premium Health insurance Health care Health economics
America’s Solution America has a chronic problem. Throughout the U.S.‚ thousands of people live in a constant rush neglecting to provide their bodies with the healthy nutrients it needs. Nowadays cafes and fast food joints sit on every corner prompting people to continue hurrying through life‚ not caring what they stuff into their bodies. According to an article by CBS News‚ the number of obese and overweight Americans has more than doubled in the last decade. Americans need a healthy lifestyle
Premium Nutrition Obesity Health
purposes‚ please contact as above. © 2008 Microsoft Corporation. All rights reserved. The question persists and indeed grows whether the computer will make it easier or harder for human beings to know who they really are‚ to identify their real problems‚ to respond more fully to beauty‚ to place adequate value on life‚ and to make their world safer than it now is. Norman Cousins – The Poet and the Computer‚ 1966 Contents About This Report 8 General Introduction 10 1 Our Changing World
Premium Computer Personal computer
- What are social problems? Social problems are completely subjective and depend entirely on who is being affected One may consider a drug dealer to be a social problem‚ others may consider a pharmacy to be a drug dealer. Perceptions are not necessarily right or wrong Initial Sociology Measurements of Social Problems: Beginning in the 1970’s at Fordham University‚ sociologists calculated the index of social health They looked at things like the percentage of people in poverty They stated that
Premium Sociology
Agriculture and Its Problems in Pakistan Introduction From time Immemorial‚agriculture has been the major occupation of the people of Pakistan.Even today agriculture is a major sector and occupies a very important place in the economy of Pakistan.It not only provides food for our growing population but is a source of raw materials for our principal industries as well as a source of foreign exchange for our government. 32% of our gross domestic products belong to this sector.It engages
Premium Agriculture