I assume you mean 30 km/second - that's more or less the speed of Earth around the Sun. Unless you want to change the mass of the Sun, this is only possible if Earth gets closer to the Sun. That would make temperatures on Earth higher, and years shorter.
The year is just how long it takes the Earth to make one complete revolution around the Sun. It would make the year shorter.
The year would be shorter.
Around 30 inches but they make different sizes for different bows.
it takes 225 earth days to make on revolution around the sun
theorems relating respectively to the volume and the surface area of a solid generated by the revolution of plane figure around an axis lying in the same plane. 1. when a plane figure is revolved about an axis lying in the same plane (but not cutting the area)The volume generated is equal to the product of the area and the length of the path described by the centre of gravity of the area . 2. When a plane curve is revolved about an axis lying in the same plane (but not cutting the curve) the surface area generated is equal to the product of the length of the curve and the length of the path of the centre of gravity of the curve.
The current maximum length for a serial cable is around 50 meters. Different cables have length limits with the maximum varying.
move your feet faster
yes it does because the shorter the string is the faster it will go (:
Some planets rotate faster or than others. Also the planets take different times to orbit the Sun.
Not sure I get what you're asking, but if you mean the length of the year, then no. Venus and Mercury travel around the sun faster than the earth.
Skateboards come in different lengths, but the average would be around 760 millimetres.
If you mean the length of the day, yes - that is the same around the Earth. The Earth rotates as a rigid body. If by day length you mean hours of sunlight. On the same lines of latitude day length will be the same, but due to the wobble in the rotation of the earth, day length is different along lines of longitude.
Typically, this length of time is called a "year". Each planet's year is a different length than that of the other planets and increases as the planet is further from the Sun.
The typical menstrual cycle length is around 28 days long, but everyone is different. Menstrual cycles will not always be the same length, up to a weeks variation from your average cycle is normal.