A cutting speed of 80 surface feet per minute is approximately how many cm per minute?
80 feet per minute is 2,438.4 cm per minute.
Cutting speed is the peripheral speed of a rotating job at the point where tool is passing while machining. The unit of cutting speed is Meters/minute. For a particular dia the cutting speed is calculated as πDN/1000, where D is in mm, N in RPM. For a constant cutting speed when diameter of cutting decreases then RPM increases. Constant surface speed or constant cutting speed is possible in CNC machine only. Where as cutting feed…
Mach 2.2 refers to 2.2 times the speed of sound. The speed of sound is variable, depending on pressure and temperature. The speed of sound on a standard day at sea level is approximately 762 miles per hour. Mach 2.2 on a standard day at sea level would be approximately 1676.4 miles per hour, or 27.94 miles per minute, or approximately half a mile per second.
According to National Geographic her speed at the time of impact with the ocean floor was nearly 35 mph. It took approximately 24 minutes for the vessel to strike bottom. The rate of descent has been estimated at 500' per minute. The ocean depth is nearly 13,000 ft where the hull rests in two pieces.
1) The cutting speed is constant almost throughout the stroke 2) The ram stroke reverses quickly with out any shock as the oil on either side of the piston provides a cushioning effect hence , vibrations are minimum 3) a number cutting speeds can be obtained and control is simpler 4) more strokes per minute can be obtained at a given cutting spee3d
The speed of light is 300,000 km/sec. Multiply that by 60 (seconds/minute) to get the speed in km/minute. ======================== Another angle: The speed of light is constant, as long as it keeps moving through the same stuff. So its speed at any time is the same as it was or will be at any other time. That could be any time in one minute, in a microsecond, or in 479 days.