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Physics – branch of science that studies matter [9] and its motion through space and time, along with related concepts such as energy and force. [10] Physics is one of the "fundamental sciences" because the other natural sciences (like biology, geology etc.) deal with systems that seem to obey the laws of physics. According to physics, the ...
Beneteau First Class 10 flying its spinnaker. The Beneteau First Class 10 is a recreational keelboat, built predominantly of solid fiberglass, with the deck made from balsa-cored fiberglass, with teak wooden trim. It has a 7/8 fractional sloop rig, with a double-spreader mast made by Z-Spar of France and stainless steel wire rigging.
Physics is the scientific study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. [1] Physics is one of the most fundamental scientific disciplines. [2] [3] [4] A scientist who specializes in the field of physics is called a physicist.
Hull speed can be calculated by the following formula: where is the length of the waterline in feet, and is the hull speed of the vessel in knots. If the length of waterline is given in metres and desired hull speed in knots, the coefficient is 2.43 kn·m −½.
The Guinness World Record of launching most water rockets is held by Royal College, Colombo when on 10 November 2017, they launched 1950 of them at the same time. [ 21 ] The Guinness World Record for the largest water rocket, measuring 7.72 metres (25.3 ft) tall and 72.5 centimetres (28.5 in) in diameter, is held by the NPO Showa Gakuen (Japan).
Wave-making resistance is a form of drag that affects surface watercraft, such as boats and ships, and reflects the energy required to push the water out of the way of the hull. The hull of a moving watercraft creates waves (a wake ) which carry energy away and resist the motion of the watercraft.
A few naval cruisers have also employed nuclear power; as of 2006, the only ones remaining in service are the Russian Kirov class. An example of a non-military ship with nuclear marine propulsion is the Arktika-class icebreaker with 75,000 shaft horsepower (55,930 kW). In an ice-breaker, an advantage is fuel security and safety in demanding ...
Sailing hydrofoils achieve boat speeds up to twice the speed of the wind, as did the AC72 catamarans used for the 2013 America's Cup. [20] Ice boats can sail up to five times the speed of the wind. [21] [22] Lateral force is a reaction supplied by the underwater shape of a sailboat, the blades of an ice boat and the wheels of a land sailing craft.