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  2. Motorcycle testing and measurement - Wikipedia

    en.wikipedia.org/wiki/Motorcycle_testing_and...

    With power typically being the product of force and speed, a motorcycle's power and torque ratings will be highly indicative of its performance. Reported numbers for power and torque may however vary from one source to another due to inconsistencies in how testing equipment is calibrated, the method of using that equipment, the conditions during the test, and particularly the location that ...

  3. Energy efficiency in transport - Wikipedia

    en.wikipedia.org/wiki/Energy_efficiency_in_transport

    A 68 kg (150 lb) person walking at 4 km/h (2.5 mph) requires approximately 210 kilocalories (880 kJ) of food energy per hour, which is equivalent to 4.55 km/MJ. [ 15 ] 1 US gal (3.8 L) of petrol contains about 114,000 British thermal units (120 MJ) [ 52 ] of energy, so this is approximately equivalent to 360 miles per US gallon (0.65 L/100 km).

  4. Kilometre zero - Wikipedia

    en.wikipedia.org/wiki/Kilometre_zero

    In many countries, kilometre zero (also written km 0) or similar terms in other languages (also known as zero mile marker, zero milepost, control stations, or control points) denote a particular location (usually in the nation's capital city) from which distances are traditionally measured and some use this as their official country location or coordinates for faster search at space satellites ...

  5. 24-hour clock - Wikipedia

    en.wikipedia.org/wiki/24-hour_clock

    24-hour digital clock in Miaoli HSR station. A public 24-hour clock in Curitiba, Brazil, with the hour hand on the outside and the minute hand on the inside.. A time of day is written in the 24-hour notation in the form hh:mm (for example 01:23) or hh:mm:ss (for example, 01:23:45), where hh (00 to 23) is the number of full hours that have passed since midnight, mm (00 to 59) is the number of ...

  6. Water - Wikipedia

    en.wikipedia.org/wiki/Water

    Even in oceans at 4 km depth, where the pressure is 400 atm, water suffers only a 1.8% decrease in volume. [ 100 ] The viscosity of water is about 10 −3 Pa· s or 0.01 poise at 20 °C (68 °F), and the speed of sound in liquid water ranges between 1,400 and 1,540 metres per second (4,600 and 5,100 ft/s) depending on temperature.