is the transfer system for heat from low temperature region to higher temperature region. The device that produces refrigeration is called refrigerator‚ heat pump and air-conditioning. The cycle they operate is called refrigeration cycle. The refrigerator and heat pump operate on the same cycle but different with their objective. The objective of refrigerator is to maintain the refrigerated space at low temperature. Discharging this heat to a higher-temperature medium is merely a necessary part of
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Data and Observations: Present all relevant data in a data table below. Include an observations section for any observations that you made during the lab. Data Set Pressure in kPa Volume in mL 1 150 20 2 100 30 3 75 40 4 60 50 5 45 60 6 40 70 Graph: [10 points] Create a graph of your data for this part of the lab. You may use any graphing tool to create the graph‚ but be sure to follow common guidelines for creating a graph. INSERT GRAPH HERE Conclusion: Answer the
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Assignment#2 June 18‚ 2013 History of MathEMATICS Time Line 30‚000 B.C. -- 2001 B.C. circa 30‚000 B.C.: Paleolithic peoples in Europe etch markings on bones to represent numbers. circa 5‚000 B.C.: The Egyptians use a decimal number system‚ a precursor to modern number systems which are also based on the number 10. The Ancient Egyptians also made use of a multiplication system that relied on successive doublings and additions in order to find the products of relatively large numbers. For example
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that “it” was starting‚ the Nazi’s hunt for all the Jews. The Rosen family went to the synagogue for their “New Year” the rabbi told them that the Nazis had taken a list of all the Jewish families and where they lived. Ellen came to live with the Johansen’s and was disguised as Annemarie’s dead older sister‚ Lise Johansen. The first night that Ellen was staying with the Johansen’s‚ the Nazis came. They questioned about Ellen’s black hair‚ (the Johansen’s all had blonde hair) but fortunately Mr. Johansen
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The results presented in Table 4 show that RAS reduced the total distance traveled and the number of buses needed. In the Real Case it was traveled 48‚507.80 km using 55 buses while RAS planned 41‚217.44 km using 39 buses in the best solution. This reduction was possible by increasing the bus occupancy rate‚ from 68.98% in the Real Case to 97.28% in the best solution of RAS. The solution found by RAS leads to a monthly gain of US$ 250‚935.55 and an annual gain of US$ 3‚011‚226.55 (by multiplying
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Discovery Restriction enzymes were discovered 40 years ago during investigations into the phenomenon of host-specific restriction and modification of bacterial viruses. Restriction enzymes protect bacteria from infections by viruses‚ and it is generally accepted that this is their role in nature. They function as microbial immune systems. When a strain of E. coli lacking a restriction enzyme is infected with a virus‚ most virus particles can initiate a successful infection. When the same strain
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Mobile Number Portability in Ghana First Year Report National Communications Authority July 18‚ 2012 Mobile Number Portability in Ghana - First Year Report - July 18‚ 2012 Key Points Mobile Number Portability (MNP)‚ a system which allows mobile subscribers to change from one network to another without changing any part of their mobile number‚ was launched in Ghana on July 7‚ 2011. In the first year of MNP operation‚ 370‚107 mobile numbers have been
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Freedom or Restriction Imagine living in the 1860’s as an African-American. You are beginning to get your rights to vote and your gaining your freedom. In1860‚ the census revealed that the national population was 31‚000‚000. Out of the 31 million‚ only 4.5 million of them were black (14percent) Only 221‚000 free blacks lived in the north which is 20 percent of the black population. By the end of the 1800’s‚ most Northern Blacks were free. But did Northern blacks really free or did they have more
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The 9 most likely numbers to roll with 3 dice To calculate the 9 most likely numbers to roll with all three dice‚ you need to work out the possible die combinations for each roll (from 3 to 18). They are the following: 3 - (1+1+1) Possible Combinations: 1 4 - (1+2+1) Possible Combinations:1 5 - (1+3+1) (1‚2‚2) Possible Combinations:2 6 - (1‚4‚1) (1‚3‚2) (2‚2‚2) Possible Combinations:3 7 - (1‚4‚2) (1‚3‚3) (5‚1‚1) (3‚2‚2) Possible Combinations:4 8 - (1‚4‚3) (1‚2‚5) (1‚1‚6) (4‚2‚2) (3
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Read the text. TV or no TV? That is the question. Bess TV is an important issue for us‚ because over three quarters of British teenagers have a TV in their bedroom (pretty antisocial if you ask me!)‚ and they watch TV for an average of 14 hours a week. In the USA‚ it’s over 20 hours a week. In my research for this debate‚ I’ve discovered some amazing facts. For example‚ 57% of programmes contain what is called ‘psychologically harmful’ violence. That means‚ according to the experts
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