Answer:
b. Group 3’s pH value for vinegar is much higher than the values of the other two groups.
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Invented by Archimedes around 250 BC, a Block is a set of pulleys on an axle in a housing. When rope is run through a block or a series of blocks, the whole assembly is called a Tackle. The most common arrangement is to have one1 block attached to a fixed position and another block left to move with the load being pulled or lifted. The mechanical advantage of a block and tackle is equal to the number of time the same line is attached to or runs through the moving block. The pulley on the left does not have a block on the Bale. When you pull on the rope, you are pulling the full weight of the bail. The tackle on the right has 4 lines running through its pulleys. This would allow you to lift 20 pounds with only about 5 pounds of pressure on the hauling part of the line. While the block and tackle is still used today, it has been largely replaced with the electric winch.
The rope used in the 1800's would have been of natural fiber like we have in this exhibit. The rope around the bail is made of SISAL which comes from the leaves of the agave plant. Cotton rope is running in the blocks. Notice how soft it is compared to the SISAL fiber rope. Jute fiber twine, from the Corchorus plant, is used to tie the ends of the larger ropes. It is the same fiber woven to make burlap sacks. Natural fiber rope continued to be in widespread use until the 1950s when synthetic fibers, such as nylon, became popular.
<h3>the best estimate for earth age is based on radiometric dating of fragment from the canyon dialo iron meteorite from the fragments scientist calculated the relative abundance of element that's for maid as radioactive Uranium decayed over billion of years</h3>
Did a bit of research, found a cool one.
Did you know that our brains are split into two parts, right inside our head? One half is the left brain and the other half is the right brain. Some people use one half of the brain more than the other half when they are doing certain activities, like talking or reading. The half that is used is sometimes tied to which hand they prefer to use. If someone likes to use their right hand when doing an activity, like drawing or throwing a ball, do they also prefer to use their right ear, eye, or foot when hearing, seeing, or kicking something? Which side do people use the most? In this science project, you will get to find out!
https://www.sciencebuddies.org/science-fair-projects/project-ideas/HumBio_p007/human-biology-health/are-you-left-or-right-sided#procedure
the connection between glaciers high in the Himalayan mountains and hundreds of millions of people living in the lowlands is direct because it provides water in the form of rivers.
<h3>What is the connection between glaciers high in the Himalayan mountains and the people living in the lowlands?</h3>
There is direct connection between glaciers high in the Himalayan mountains and hundreds of millions of people living in the lowlands of India, china and Bangladesh because the glaciers of Himalayan mountains melts in the summer season and provides huge amount of water that flows down to the lowlands. This water is used for drinking, agriculture, industries and in many daily activities.
So we can conclude that the connection between glaciers high in the Himalayan mountains and hundreds of millions of people living in the lowlands is direct because it provides water in the form of rivers.
Learn more about Himalayan here: brainly.com/question/26697261
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