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Boats float better in salt water because salt water is denser than fresh water. The higher salinity of salt water increases the buoyant force that supports the boat, making it easier for the boat to float. In comparison, fresh water has a lower density, resulting in less buoyancy and potentially making it more difficult for boats to float.
it depends on the circumstances. boat type, wind..... In a controlled environment where water temp,current, and wind are equal you will be faster in fresh water. this is because fresh water is less dense thus creating less resistance. on the other hand you float higher in saltwater which can also create less drag. However mathematically because of the resistance of saltwater you can calculate that you will be able to go faster in fresh water despite floating higher in saltwater. Its not much faster. I haven't calculated it but if I had to guess maybe 1-2% faster. A more dramatic example would be easier to understand. lets compare freshwater vs mud or somewhat diluted mud 50 50. its a lot easier to figure out which you will go faster in. My boat will practically sit on top of the mud. less drag right? This is what most people think saltwater does for them. How fast are you going to go in mud? Not hard to figure that out. there is too much resistance, you probably wont go anywhere. Apply this same logic to saltwater vs fresh and you can see that the more dense a solution is the more resistance it will have.
Almost all bodies of water allow people to pass through from one side to the other. You can cross a river, sea, or canal via boat.
They are equal.When a boat is floating on water it displaces water equal to its weight(Archimedes Principle). As the density of water is less than boat so water displaced is greater than volume of boat. When the boat sinks water displaced is equal to volume of boat. So less water is displaced in 2nd case and consequently water level goes down.Note - relation between volume(v) mass(m) and density(d) : d = m/v
because the tide rise and particles of sand are washing away making the boat eventually move back into the water
The boat will sink lower in fresh water. Try floating in the ocean versus your pool. You will see it is easier to stay afloat in salt water.
Thats not true. Salt water is more dense than fresh water so the boat wont sink as much
Boats have pointed front ends which make it easier for the boat to glide through the water.
== == water with out salt water with out salt
Durring the rain season,it would be easier to travel by boat. During the normal season it is easier to travel by car through the Amazonian Highway.
Boats float better in salt water because salt water is denser than fresh water. The higher salinity of salt water increases the buoyant force that supports the boat, making it easier for the boat to float. In comparison, fresh water has a lower density, resulting in less buoyancy and potentially making it more difficult for boats to float.
It had to do with farming and transportation. It was easier to irrigate crops when close to a fresh water source. Also, it made for quicker easier transportation for traders and merchants when they could get in a boat and go from town to town.
It had to do with farming and transportation. It was easier to irrigate crops when close to a fresh water source. Also, it made for quicker easier transportation for traders and merchants when they could get in a boat and go from town to town.
How much weight a boat will hold depends on the volume of the boat. This is called displacement. displacement is exactly equal to the weight of the water the boat displaces, that is the boat makes a hole in the water. The volume of that hole times the weight of water (64 lbs for salt water, 62.4 for fresh water) - displacement. The volume of water displaces is equal to the volume of the boat.
Any number of things will float in fresh water. Any boat that can be used in salt water will also stay afloat in fresh. However, fresh water has a lower specific gravity than salt water, and as a result, objects that displace a certain amount of sea water will displace more fresh water; they will sit lower in fresh water.
When a boat moves through water, the energy transfers from the moving boat to the stagnant water. The energy ripples through the water causing the wave-like movements.
It is known as the wake of the boat.