Determine the speed of sound in air at (a) 300 k and (b) 800 k. Also determine the mach number of an aircraft moving in air at a velocity of 330 m/s for both cases. The gas constant of air = 0. 287 kj/kg k. The specific heat ratio of air at room temperature is 1. 4.

If you are solving y2+2y=48 by completing the square, the next line would be y2 + 2y - 48 = 0 y2 + 2y + 4 = 52 y2 + 2y +1 = 49

How do we determine if they are made with matter

Which of the following ideas did greek philosopher democritus contribute to the atomic theory? a. each object is made up of one atom, which varies in size from very small to very large. b. matter is composed of only one kind of particle, which can be easily destroyed. c. every element has a specific type of atom, which remains the same size in all forms of matter. d. all matter is composed of small particles, which combine to make larger objects.