Theoretically a 40x could spin up to 20,000 rpm at it's maximum, although this would very rarely happen. 1x CD-ROM drives spin up to 500rpm
you count how many times it spin in one minute
To achieve 60 cycles per second (Hz), a generator must complete 60 full revolutions in one second. Since there are 60 seconds in a minute, this means the generator needs to spin 60 times per second multiplied by 60 seconds, resulting in 3,600 spins per minute. Therefore, a generator must spin 3,600 times in one minute to generate 60 cycles per second.
That is highly variable and there is no single answer. A small but intense tornado can rotate 60 or more times in a minute. At the other end a very large tornado might not even complete a full rotation in a minute, at least on the outside. This if further complicated by the fact that a tornado usually spins faster near its center than at its edges.
skin it spin it minute
RPM = revolutions per minute - or - how many times the discs makes a complete spin around its center (axis) in a minute, just like a fan does.
At 70 miles per hour a tire with a rim 15 inches wide will spin 129 times per minute, approximately. You can google a tire spin calculator that lets you in put speed and tire size to get whatever answer you need.
Pin it, spin it, win it. * * * * * There are two pronunciations of minute. The one above refers to minute as a measure of time. But there is also minute, meaning very small. That rhymes with dilute.
RPM (Revolutions Per Minute)
Cannot be determined with the values you give. A spin rate cannot be defined by a linear dimension, You need to specify the angular dimension and a time value. or the peripheral speed which could be a linear and a time value.
The instructions on the pack indicate that you twist spin Ravenoid 4 times.
The revolutions per minute of a bike wheel depends on the size of the wheel, the speed you are riding, and other factors. It is generally thought it can spin at 2 revolutions per second.
Some spin up to hundreds of times a second. AT LEAST ONE OF THEM HAS BEEN MEASURED TO SPIN 700 HUNDRED TIMES PER SECOND, AND OTHERS THAT MAY EVEN SPIN FASTER.