No comparison
60 minutes (4x15minute quarters)
Mach 3 refers to traveling at a speed three times the speed of sound. In aeronautics, Mach numbers are used to compare the speed of an object to the speed of sound in the medium through which the object is traveling. Mach 3 is considered to be supersonic speed.
Depends what year, but if you compare the same model years: Mach 1
60 minutes (4x15minute quarters)
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The mach number is the speed, compared to the speed of sound in air. Thus, mach 1 is the speed of sound, mach 2 is twice (2 times) the speed of sound, mach 3 is 3 times the speed of sound, etc.
A Mach Speed MP3 Player will vary upon size, memory etc. It would be ideal to check out Amazon.com. There, you can read the review on a product, compare the product prices and be able to return your product if not satisfied.
There is no plural for the noun 'mach'; the different levels of mach are usually shown by a numeral for various speeds, such as mach 1 or mach 2.
Maximum speed: Mach 0.96Operating speed: Mach 0.89
the Mach number
Ernst Mach .
To mach for you if you cant spell it.