But what exactly is the polar vortex? And what causes it? The polar vortex is an area of low pressure—a wide expanse of swirling cold air—that is parked in polar regions. During winter, the polar vortex at the North Pole expands, sending cold air southward. How are polar vortexes formed?Read More →
Given the polar coordinate (r,θ), write x=rcosθ and y=rsinθ. Evaluate cosθ and sinθ. Multiply cosθ by r to find the x-coordinate of the rectangular form. Multiply sinθ by r to find the y-coordinate of the rectangular form. Can Theta be negative in polar coordinates? In the polar coordinate system, theRead More →
If there are no lone pairs on the central atom, and if all the bonds to the central atom are the same, the molecule is nonpolar. … If the central atom has at least one polar bond and if the groups bonded to the central atom are not all identical,Read More →
SF4 has the central atom S attached to the four atoms through the four single bonds. It uses the four valence electrons and the remaining two valence electrons that remain one lone electron pair. In other words, it means that the SF4 S atom has one lone electron pair. WhyRead More →
It is true that acetone is less polar than ethanol. Is acetone more polar than water? ” In the case of acetone, it’s slightly more polar than water. … Because acetone contains non-polar methyl groups, it has the ability to interact with non-polar substances such as certain organic compounds; butRead More →
Ice biome prowling polar bears in Minecraft can be tamed, but it is not as simple as taming some of the other animals that players can domesticate. … Players can collect and breed sheep, panda bears, chickens, and can even breed horses in Minecraft. Has anyone ever tamed a polarRead More →
The investigation showed that the NF bond is a tunable covalent bond, with bond strength orders ranging from 2.5 (very strong) to 0.1 (very weak). Is a NF bond more polar than a of bond? Question: PROBLEM 2-2 The N-F bond is more polar than the N-H bond, but NF3Read More →
A polar vortex strengthens in the winter and weakens in the summer because of its dependence on the temperature difference between the equator and the poles. … Since polar vortices exist from the stratosphere downward into the mid-troposphere, a variety of heights/pressure levels are used to mark its position. What’sRead More →
Polar bears have feasted on about 20 beluga whales that got stuck in ice near Sanikiluaq, Nunavut. … Kattuk says most of the dead whales were calves that had been pulled to the surface. “Some are still in the breathing hole but there was about 20 dead belugas on theRead More →
As well as reaching speeds of up to 6mph in the water, polar bears can swim for long distances and steadily for many hours to get from one piece of ice to another. Their large paws are specially adapted for swimming, which they’ll use to paddle through the water whileRead More →