Answer:
If conditions are just right, you can see Polaris from just south of the equator. Although Polaris is also known as the North Star, it doesn't lie precisely above Earth's North Pole. If it did, Polaris would have a declination of exactly 90 degree.
Explanation:
Answer: Chopping carrots is a chemical change because you aren't changing the property its substance, you are just chopping it up, there is no new substance being formed.
Explanation:
Answer:
Fm - W = 0 1) true. Imams must separate, to match the two forces, you reach equilibrium
Explanation:
When the magnet is exchanged for a stronger one, but of the same weight, the equilibrium equation
Fm - W = 0
Fm = W
If the weight of the imam is the same, the magnetite force must decrease, so that it will occupy the magnets must be separated a greater distance, according to the formula
Fm = Km m ’m / r²
Where Km is value 10⁻⁷ N s²/C², r is the distance between the poles
Let's review the proposed results
1) true. Imams must separate, to match the two forces, you reach equilibrium
2) False. In this case the weight would be less than the magnetic force
3) False The magnetic force increases and equilibrium is not reached
Light receptors within the eye transmit messages to the brain. This produces the familiar sensations of color. Newton observed that color is not inherent in objects. Instead, the surface of an object reflects some colors and absorbs all the others. We perceive only the reflected colors.
Solids, liquids and gases :
In solids the particles like molecules of the substance - are very close to each other. They cannot move far from their positions. In liquids they are separated by some more distance. SO molecules are freely moving inside liquid. But in gases the molecules are free to move with in the volume.
Gaseous molecules have higher speeds.
Solids have good conductivity of electricity. Some liquids are also conductive. gases may be less conductive.
Gases have no shape of their own. Liquids do not have a shape too. Solids can have some shape and retain their shape.
Gases and Liquids flow. Solids do not flow.
Many gases may be invisible or may be faint in color. Visibility of liquids and solids is high.
Gases may not taste. they may smell. Solids and liquids may taste and may or may not smell.
Solids may be transparent to light or may be opaque. Gases may be highly transparent to light.
Sound travels in solids faster than in gases.
