When you get into a car with hot black leather in the middle of the summer and it hurts your skin whe you sit this is an example of a} convection b) radiation c) conduction pl hurry and answer 20 points plz

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Which notation is used to represent an alpha particle? a. b. c. d.

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?