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:
Rating Newest Oldest. Best Answer: Earth's velocity in its orbit around the sun isn't constant because it's not a circle but instead elliptical. That means that at times Earth will be farther away from the sun than at others. Farther away equals slower orbital velocity, closer equals faster velocity.The average velocity is 67,108 mph.ating Newest Oldest. Best Answer: Earth's velocity in its orbit around the sun isn't constant because it's not a circle but instead elliptical. That means that at times Earth will be farther away from the sun than at others. Farther away equals slower orbital velocity, closer equals faster velocity.