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Millimetre of water (US spelling millimeter of water) [3] is a unit of pressure. It may be defined as the pressure exerted by a column of water of 1 mm in height at 4 °C (temperature of maximum density) at the standard acceleration of gravity, so that 1 mmH 2 O (4 °C) = 999.9720 kg/m 3 × 9.80665 m/s 2 × 1 mm = 9.8063754138 Pa ≈ 9.80638 Pa, but conventionally a nominal maximum water ...
Up to 99.63 °C (the boiling point of water at 0.1 MPa), at this pressure water exists as a liquid. Above that, it exists as water vapor. Note that the boiling point of 100.0 °C is at a pressure of 0.101325 MPa (1 atm), which is the average atmospheric pressure.
The bicycle is the most efficient human-powered means of transportation in terms of energy a person must expend to travel a given distance. [51] From a mechanical viewpoint, up to 99% of the energy delivered by the rider into the pedals is transmitted to the wheels, although the use of gearing mechanisms may reduce this by 10–15%.
The MTT Y2K Turbine Motorcycle, also known as the Y2K Turbine Superbike, is an American motorcycle powered by a turboshaft engine, made by Marine Turbine Technologies since 2000. The bikes are not mass-produced in continuous series; each unique bike is hand made to order after receiving the buyer's specifications. [ 1 ]
RadWagon 4 Electric Cargo Bike. This powerful e-cargo has enough power and throttle, it can give you a scooter-like ride when you want it. It's got 22-inch-high, 3-inch-wide tires for smooth ...
A human-powered transport uses only human power A pedal cycle, commonly known as a bicycle is driven by legs and feet on pedals. A hand-cranked bicycle or handcycle is driven by arms and hands. A rowing cycle is driven by a rowing action using both arms and legs. A treadle bicycle is driven by a reciprocating, not rotary, motion of the feet.
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