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a) A single cylinder petrol engine has a volume compression ratio of 8:1, takes in a mixture of fuel and air at a temperature of 250°C and its pressure is 101 kPa. If the pressure at the end of the compression stroke is 1.5 MPa what will be its final temperature?
b) A compressed air storage cylinder has a volume of 0.5 m3 and contains air at an absolute pressure of 1.8 MPa and temperature 20°C. A quantity of the air is released during which the temperature of the remaining air falls to 15°C and the pressure to 1.5 MPa. Calculate the mass of the air released. The characteristic gas constant for air is 287 Jkg−1K−1.
i) Determine the change of length that takes place.
This part of the task provides part of the evidence for the grading criterion P8.
ii) Determine the compressive force induced in the bar if it is rigidly held and expansion is prevented.
deposit is $2500 and each succeeding deposit is 6% higher than preceding deposit. What is
the accumulated value of her fund immediately after her 15th deposit?
Enter a double value 11.11
Enter a double value 22.22
Enter a double value 33.33
Enter a double value 44.44
Enter a double value 55.55
The total is 166.65
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How much more or less does the restaurant make each day in pizza sales after the promotion?