Stones can sink into sea, Why Not Ships ?

A boat or ship considered in terms of its ability to cope with conditions at any water bodies for travelling. These Floating boats are never getting into water bodies.The reason behind is its hollow structure and Archimedes ‘s principle states that the force exerted on an object in a fluid is equal to the weight of fluid displaced (moved out of the way) by the object. This force is called buoyant force. The buoyant force pushes upwards against the object. Gravity exerts a downward force on the object (its weight), which is determined by the object’s mass. So, Boat density is less compared to water body density.

Though Submarines are in a hollow shape, They can go up and down water bodies. The bottom of the Submarine has tanks in which we can fill water or air. By Archimedes’s principle, the submarines may reach the outer surface of water bodies when tanks are getting filled with air. This process is called as positive buoyancy. In the same way, submarines can sinks into the water while filling those tanks with water. This process is called negative buoyancy. Those tanks are called ballast tank. The ballast tanks can also be used to help a submarine surface very quickly in an emergency.

Most submarines except nuclear ones have diesel-electric engines. The diesel engine operates normally when the sub is near the surface but it doesn’t drive the sub’s propellers directly. Instead, it powers an electricity generator that charges up huge batteries. These drive an electric motor that, in turn, powers the propellers. Once the diesel engine has fully charged the batteries, the sub can switch off its engine and go underwater, where it relies entirely on battery power.

Credits: Jothika

Comments

WHY ATLANTIC AND PACIFIC OCEAN ARE NOT MIXED?

Nearly 72% of the earth is filled with water and it is present with different names- oceans, seas, rivers. Why are they named differently? There are five oceans namely Artic ocean, Atlantic Ocean, Pacific Ocean, Indian ocean and Antarctic ocean . All the oceans are different in their physical and biological character called ocean clines. When we look at the Atlantic and Pacific Ocean junction, they do not mix. Is there any invisible Wall in between them? Many scientists have conducted research to solve this mystery. The Atlantic and Pacific Ocean have different chemical composition. The salinity of the water in the Atlantic Ocean is five times more than the Pacific Ocean. The density of water is also different, so even marine animals in Atlantic Ocean will not go to the Pacific Ocean. They cannot survive in other oceans. Atlantic and Pacific Ocean meet at Cape Horn. The narrow straight line formed by the water bodies is called Drake Strait. The Pacific Ocean is ...

5 Amazing Animal Temple

1) Crocodile Temple: The Ananthapadmanabhaswamy Temple or Anantha Lake Temple is built for Lord Vishnu. It is also called a crocodile temple. This temple built in the middle of a lake in the little village of Ananthapura, around 6 km from the town of Kumbla in Manjeshwaram Taluk of Kasaragod District of Kerala. There is a harmless crocodile that lived in the Ananthapadmanabhaswamy Temple’s lake. It is a vegetarian. Believable of this place is that you will get lossed posting or objects after visiting this place. 2) Rat Temple: The Karni Mata Temple is situated at Deshnoke in Rajasthan. This temple is the craziest place because it gives importance to rats. They believe that the god of this temple incarcerated every year as a rat. More than 25,000 black rats are living in this temple. White rats are considered a very holy animal in this temple. The food that gives to people as prasatham is the remaining food eaten by a rat....

The Oldest Phone In The World

The first cellular telephones are called Dyna Tac. It is manufactured from 1983-1994. It received approval from the U.S. FCC on September 21, 1983. Martin Cooper of Motorola made the first publicized handheld mobile phone call on a prototype DynaTAC model on April 3, 1973. This is a reenactment in 2007. The dimensions of this phone are 3300 x 898 x 445 mm, vol. 1318710 cm³.This cellular phone is available at the minimum weight of 2 pounds. It is used in the ALOHAnet system, including metal–oxide–semiconductor (MOS) transceiver and modem technology. It has nine additional key.They are Rcl (recall),Clr (clear),Snd (send),Sto (store),Fn (function),EndPwr (power),Lock and Vol (volume).Minimum sim is used in this phone. In 1983, The market price for this phone is $3,995. In 1930, Travelers could place phone calls from and to ocean liners in the middle of the Atlantic Ocean. The process was driven by Marine VHF Radio and cost $7 a minute. In 1984 Motoro...

Home

Search This Blog