What is included under the definition of fossil fuels?
What will be an ideal response?
Fossil fuels are minerals that formed over time from compressed organic matter, almost exclusively vegetation.
They include coal, oil, natural gas, tar sands, and oil shale.
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REFRIGERANT
TEMP _____________________ TEMP ______________________ TEMP ________________________ °F 12 22 134a 502 °F 12 22 134a 502 °F 12 22 134a 502 -60 19.0 12.0 7.2 12 15.8 34.7 13.2 43.2 42 38.8 71.4 37.0 83.8 -55 17.3 9.2 3.8 13 16.4 35.7 13.8 44.3 43 39.8 73.0 38.0 85.4 -50 15.4 6.2 0.2 14 17.1 36.7 14.4 45.4 44 40.7 74.5 39.0 87.0 -45 13.3 2.7 1.9 15 17.7 37.7 15.1 46.5 45 41.7 76.0 40.1 88.7 -40 11.0 0.5 14.7 4.1 16 18.4 38.7 15.7 47.7 46 42.6 77.6 41.1 90.4 -35 8.4 2.6 12.4 6.5 17 19.0 39.8 16.4 48.8 47 43.6 79.2 42.2 92.1 -30 5.5 4.9 9.7 9.2 18 19.7 40.8 17.1 50.0 48 44.6 80.8 43.3 93.9 -25 2.3 7.4 6.8 12.1 19 20.4 41.9 17.7 51.2 49 45.7 82.4 44.4 95.6 -20 0.6 10.1 3.6 15.3 20 21.0 43.0 18.4 52.4 50 46.7 84.0 45.5 97.4 -18 1.3 11.3 2.2 16.7 21 21.7 44.1 19.2 53.7 55 52.0 92.6 51.3 106.6 -16 2.0 12.5 0.7 18.1 22 22.4 45.3 19.9 54.9 60 57.7 101.6 57.3 116.4 -14 2.8 13.8 0.3 19.5 23 23.2 46.4 20.6 56.2 65 63.8 111.2 64.1 126.7 -12 3.6 15.1 1.2 21.0 24 23.9 47.6 21.4 57.5 70 70.2 121.4 71.2 137.6 -10 4.5 16.5 2.0 22.6 25 24.6 48.8 22.0 58.8 75 77.0 132.2 78.7 149.1 -8 5.4 17.9 2.8 24.2 26 25.4 49.9 22.9 60.1 80 84.2 143.6 86.8 161.2 -6 6.3 19.3 3.7 25.8 27 26.1 51.2 23.7 61.5 85 91.8 155.7 95.3 174.0 -4 7.2 20.8 4.6 27.5 28 26.9 52.4 24.5 62.8 90 99.8 168.4 104.4 187.4 -2 8.2 22.4 5.5 29.3 29 27.7 53.6 25.3 64.2 95 108.2 181.8 114.0 201.4 0 9.2 24.0 6.5 31.1 30 28.4 54.9 26.1 65.6 100 117.2 195.9 124.2 216.2 1 9.7 24.8 7.0 32.0 31 29.2 56.2 26.9 67.0 105 126.6 210.8 135.0 231.7 2 10.2 25.6 7.5 32.9 32 30.1 57.5 27.8 68.4 110 136.4 226.4 146.4 247.9 3 10.7 26.4 8.0 33.9 33 30.9 58.8 28.7 69.9 115 146.8 242.7 158.5 264.9 4 11.2 27.3 8.6 34.9 34 31.7 60.1 29.5 71.3 120 157.6 259.9 171.2 282.7 5 11.8 28.2 9.1 35.8 35 32.6 61.5 30.4 72.8 125 169.1 277.9 184.6 301.4 6 12.3 29.1 9.7 36.8 36 33.4 62.8 31.3 74.3 130 181.0 296.8 198.7 320.8 7 12.9 30.0 10.2 37.9 37 34.3 64.2 32.2 75.8 135 193.5 316.6 213.5 341.2 8 13.5 30.9 10.8 38.9 38 35.2 65.6 33.2 77.4 140 206.6 337.2 229.1 362.6 9 14.0 31.8 11.4 39.9 39 36.1 67.1 34.1 79.0 145 220.3 358.9 245.5 385.0 10 14.6 32.8 11.9 41.0 40 37.0 68.5 35.1 80.5 150 234.6 381.5 262.7 408.4 11 15.2 33.7 12.5 42.1 41 37.9 70.0 36.0 82.1 155 249.5 405.1 280.7 432.9 An R-22 cylinder containing enough refrigerant to have liquid refrigerant in it, is in a truck with a temperature of 120°F. What would be the psig pressure in the cylinder? A. 255.7 psig B. 259.9 psig C. 267.0 psig D. 271.5 psig
When performing a battery load test, how many seconds should the load be applied?
A) 60 B) 15 C) 10 D) 5
One principle that makes heat pump operation possible is:
A) Air velocity over a coil will create friction, raising the temperature of the coil. B) Heat will flow up hill when subjected to a strong magnetic field. C) The temperature at which a material boils depends on its pressure. D) Moving heat quickly through a cold object will create thermal induction, drawing in heat from the colder surroundings.
A signal is described by 
Graph the magnitude and phase of its DTFT over the range ?? ? ? < ? .