Cylinder with frictionless piston contains steam at 2 mpa, 500c with a volume 5l, as shown in fig p5.64. external piston force is proportional to the cylinder diameter cubed. heat is transfered out of cylinder, reducing the volume and thus the force until the cylinder pressure has dropped to 500 kpa. find work and heat transfer in this process

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?