Chlorpheniramine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. Chlorpheniramine is used to treat runny nose, sneezing, itching, and watery eyes caused by allergies, the common cold, or the flu.
The mean orbital velocity of Earth is about 29.783 kilometers per second. That's the speed the planet is moving through space in its orbit about the sun. Earth's speed varies a bit because its orbit is slightly eccentric, but that's why we say mean orbital velocity. One can calculate this value by knowing two facts:
To see this, we will calculate the linear velocity of a point on the surface of the Earth and a point on the tip of a fan blade. The radius of the Earth is approximately 4000 miles. The Earth is rotating at a rate of per hour. Therefore, the angular velocity of the Earthâs rotation is. 2  A second example is that of a ceiling fan. 3  If the fan rotates 30 times per minute, the angular velocity is radians per minute or. 4  The radius of the Earth is approximately 4000 miles. 5  The Earth is rotating at a rate of per hour.