polyp
yes
360 / 30 = 12 , so 12 spokes in that wheel.
Radii
radii
We had this question just the other day as well. 28-21, you do the math.
polyp
yes
There are many types of spokes. Some are the spokes on a bicycle, another are the spokes on a wheelchair, or you can even find them on baby carriages.
Spokes are examples of pre-stressed construction elements.
Spokes are found as part of wheels, for instance on a bicycle. They connect the hub to the rim.
a bicycle wheel?
No, but the spokes on a bicycle do.
360 / 30 = 12 , so 12 spokes in that wheel.
like spokes on a wheel
In 1870 James Starley improved the design of the penny-farthing bike by using metal instead of wooden spokes. His bicycle was called the Ariel.
Bicycle spokes are usually made of stainless steel, although cheap/old bikes might have spokes of galvanized steel instead. Some high-end bikes have thick spokes out of aluminum alloy. There are occasional uses of carbon fibre spokes too.
Most spokes are metal, and metals are conductors.