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.
Plants. Cuz plants breathe carbon dioxide.
Explanation:
A) Thickness of the sedimentary rock layers
Size, color, shape, textures are examples of inherited characteristics. Inherited characteristics are certain traits that are passed on by previous family members.
Answer:
Water will flow from microbe to the Jam.
Explanation:
Osmosis is defined as the movement of molecules from higher concentration to lower concentration of the solution across a semi-permeable membrane. In osmosis water moves from low concentration of solute to high concentration of solute.
<em>In the given experiment, cell wall of bacteria acts as a semi-permeable membrane and sugar in jam and cytoplasm in bacteria act as solutes.</em><em> </em><em>Sugar in jam is strong solution means has high concentration of solute and cytoplasm in bacteria has low concentration of solute, which drives the movement of water from bacteria to the jam.</em>
Hence, the correct answer is "Water will flow from microbe to the Jam."