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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 ...
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.
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%.
Road racing bicycle forks have an offset of 40–50 mm (1.6–2.0 in). [7] The offset may be implemented by curving the forks, adding a perpendicular tab at their lower ends, offsetting the fork blade sockets of the fork crown ahead of the steerer, or by mounting the forks into the crown at an angle to the steer tube.
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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 ]
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Rebeca Gonzalez works at a California Walmart and got a last-minute call to come in. She bought a lottery ticket on her way out and won $1 million.