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The first solar car race was the Tour de Sol in 1985 which led to several similar races in Europe, US and Australia. Such challenges are often entered by universities to develop their students' engineering and technological skills, but many business corporations have entered competitions in the past. A small number of high school teams ...
Vehicle dynamics is the study of vehicle motion, e.g., how a vehicle's forward movement changes in response to driver inputs, propulsion system outputs, ambient conditions, air/surface/water conditions, etc. Vehicle dynamics is a part of engineering primarily based on classical mechanics.
Celestial navigation uses angular measurements (sights) between the horizon and a common celestial object. The Sun is most often measured. Skilled navigators can use the Moon, planets or one of 57 navigational stars whose coordinates are tabulated in nautical almanacs. Historical tools include a sextant, watch and ephemeris data.
Most student built solar cars lack the safety and convenience features of conventional vehicles and are thus not street legal. The first solar family car, Stella, was built in 2013 by students in the Netherlands. [2] This vehicle is capable of 890 km (550 mi) on one charge during sunlight. It weighs 390 kg (850 lb) and has a 1.5 kWh solar array.
The car is accelerating, due to the unbalanced force, which causes it to move in a circle. (See also banked turn.) From the viewpoint of a rotating frame, moving with the car, a fictitious centrifugal force appears to be present pushing the car toward the outside of the road (and pushing the occupants toward the outside of the car).
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Four planets are set to align ... the alignment or three to six planets happens often. In 2024 and 2025, there will be a total of six planetary alignments consisting of five or more planets ...
Large proper motion usually strongly indicates an object is close to the Sun. This is so for Barnard's Star, about 6 light-years away. After the Sun and the Alpha Centauri system, it is the nearest known star. Being a red dwarf with an apparent magnitude of 9.54, it is too faint to see without a telescope or powerful binoculars.