Buoyancy Compensator reviews

"How can you tell how strong the buoyant force is?" This is a question from a review packet I've received in physical AP science now I believe the question means How can you tell how strong the buoyant force is on an object..But I'm not sure if there is a formula for that or how how you could measure the buoyancy on and object. Someone please help me?

Archimedes' principle, Any object wholly or partially immersed in a fluid is bouyed up by a force equal to the weight of the volume of fluid it displaces. As a worked example, an empty 50L drum weighs 10Kg, it is immersed in fresh water, it will be 40kg bouyant (50L of fresh water weighs 50kg) If the same 50L drum was filled with 20L of fresh water and immersed in salt water it would weight 30Kg but receive a 51.5 Kg lift (salt water weighs 1.03Kg/Litre) giving it a total positive bouyancy of 21.5Kg.

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Topics: -Hydrostatic forces on plane and curved surfaces, buoyancy and stability, fluids in rigid body motion. -Mass, momentum, and energy conservation integral equations. -Bernoulli equation. -Introduction to Navier-Stokes equations. -Dimensional analysis and similitude Thanks!!

I like this site... http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html Bernoulli ... http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html Buoyancy ... http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html

Everyone probably knows this because this might seem easy but I struggle with it. I'm in grade eight and have a test tomorrow. I just need some help to understand density, buoyancy, concentration, particle model of matter, Pascal's theory and hydrualic and pneumatic systems. Any handy tips or information will really help! I have alot of trouble with science and I am trying to get extra help but my teacher doesn't have time. Thanks, Melissa

I got all of my information from the internet and am still working on putting it into my own words. Yet somehow I still feel I'm completely off on the subject am I anywhere close? I feel like Im explaining every detail but leaving out how it is produced. The up welling of the magma originates from the earth’s mantle which results in volcanoes forming themselves by their own products and material. Volcanoes are typically mountains built around a vent which connects to a source which provides the volcano to molten rock below the surface of the Earth. Buoyancy, gas pressure and molten rock which is lighter than the surrounding solid rock forces its way upward and may ultimately break though zones of weaknesses in the Earth's crust. When such a process commences an eruption takes place, molten rock is expelled from the vent of the volcano and non-explosive lava pours over the volcanoes slopes at deadly temperatures and races downwind. Projectile lava may also occur, shooting into the air as dense clouds or lava fragments. The larger fragments fall back around the vent and some fragments may move downslope as ash flows under and acts as a force of gravity. Select fine-grained pieces may be transported by wind forces only to fall to the ground miles away. Miles into the atmosphere the finest particles of ash material and deported many places before settling. Beneath the surface of the earth molten rock may rise into the vents and is known as magma which is in the form of a liquid and when it is emitted from the vents it is known as lava that’s runs over the earths surface during an eruption. In the earths upper mantle concentrated heat raises temperatures significantly enough to liquefy rock by merging with the lowest melting temperatures of matter and results in diminutive and isolate fragments of magma. Accumulation of this magma ascends through conduits and fractures, some may collect into reservoirs a small-scale distance beneath the earths surface. The magma which is stored in these reservoirs may be driven further upward through structurally weak zones and erupt as lava at the surface due to mounting pressure within the reservoir. Lava is first featured as red when it runs down the surface of a volcano but quickly turns color (black, grey, dark-red) due to cooling and soon solidifies. Sweltering hot lava which is rich is gas and has high contents of iron and magnesium, runs fluid and vigorously over a surface contrary to cooler, gas-poor lava which is high in silicon, sodium, and potassium is reduced in fluidity . Each single volcano attains dissolved gases and restricted pressures are minimized and the gases released either subtly or explosively erupted as they rise to the summit of the volcano. Gases are allowed to easily escape if fluid of lava is thin. If the fluid is thick gases are not able to move freely and pressure builds up and the effect is to liberate itself by explosive means. The abrupt expansion of gases in lava concludes in explosions which discharge solid rocks of extensive mass, lava, dust and ash. The process of separation of gas and lava may create matter known as pumice, which may be light due to gas bubbles or explosive casting fragments into the air in the form of volcanic cinders, volcanic ash and volcanic dust, a much more inclusive scale that that of a campfire. Objects in the path of lava are almost certain to be destroyed. Mass destruction is caused by eruptions including those such as loss of population, habitation, organisms and vegetation.

You need to break this up into about 10 paragraphs. Make sure they're well structured. You have a lot of detail. good. It's just very hard to read. Try to get it to flow better.