f=1/T
where f is the frequency and T is the time for one rotation...
Example..
If the time for one rotation = 2s then frequency =0.5Hz (1/2)
therefore... the number of rotation in one minute =
60x0.5=30
in 1 second =
1x0.5=0.5
This is the definition of "rotational symmetry", or if the statement is true for any number of degrees of rotation it is also "circular symmetry.".
A good place to measure is the diameter of the circular end. That gives you the area of the circular end, and the only other number you need in order to calculate the cylinder's volume is its straight length.
2 is the number of directors who are liable to retire by rotation.
If you count the number of times it spins in 60 seconds, you find out each rotation is .1mph. So for example it spins 65 times in 60 seconds you can calculate the wind speed in 6.5mph.
There are no rudders on the Belle of Louisville. It is powered by a paddle wheel, which is made up of many bucket planks that turn the paddle in a circular motion, which in turn propels the Belle of Louisville.
The formula to find the volume of a right cylinder is height times area of the circular base. This volume in cubic feet is then multiplied by 7.48 to find the number of gallons.
Usually circular.
Edison invented the "motion picture" camera working out of his lab in West Orange, New Jersey, but did not invent motion pictures. Motion pictures, or moving pictures, had been created using a number of devices. One that I've seen at the Smithsonian institution was a circular device, with pictures glued to cardboard cards attached to the edge of a circular plate. There was a small space (slot) between the photographs. When spinning, you looked through the slots at the adjacent photograph and the strobe effect created the illusion of movement. Flip books are another example of early moving pictures.
The Reynolds number is the relationship between inertial forces (numerator) and viscious forces (demoninator). The terms in the numerator are usually the fluid density, velocity, and "characteristic" dimension (which has units of length). Depending on the type of problem you are trying to solve that characteristic dimension may be a length (flat plate problem) or a diameter (flow in a round tube), or hydraulic diameter (non-circular internal flow). Since a non-circular cross section has more surface area than a circular cross section area there needs to be a way to account for this difference. If you use the hydraulic diameter equation to calculate the hy. dia. of a circular cross section, you will get the diameter of the circle.
How to calculate the number of units sold?
One.That is the definition of a rotation. Once around it's axis.See related question for the periods
The gravitational interaction of the Earth and Moon produces a number of effects. The most obvious of these is the orbital motion of the Moon around the Earth, but there is also a motion of the Earth around the center of mass of the Earth-Moon system, tidal effects on the Earth and Moon and professional effects on the Earth's axis of rotation.