In the back I carry a moped, which consumes fuel at 28 kilometres per litre.I have to travel 42km, which I will do by travelling part of the way by tuk-tuk, and then abandoning thisfor the moped which I will use for the remaining part of the journey.Method A: travel half of the...
母题:one long-distance flight consumes fuel which a car uses in several years’ time, but they cause the same amount of pollution. so some people think that we should discourage non-essential flights, such as tourist travel, rather than to limit the use of cars. to what extent do you ag...
PROBLEM TO BE SOLVED: To provide a fuel cell without leak of fuel or an oxidant around a membrane electrode assembly, with a sealing structure compact and simple and with a high energy density. SOLUTION: The fuel cell having a solid polymer electrolyte film is constituted of the membrane ...
Batteries are less energy dense than jet fuel, meaning electric aircraft cannot travel as far or carry as much weight. While the companies are using composite light-weight materials to help reduce weight, staying airborne in an electric aircraft consumes energy to the degree that, “at some poin...
A power plant consumes 900 tons of bituminous coal per day and is 30% efficient. At what rate does it deliver energy? Can fission be used to generate electricity? If so, how? Which of the following types of motors or engines...
12月12号要考压死了,如有修改万分感谢One long-distance flight consumes fuel which a car uses in several years’ time,but they cause the same amount of pollution.So some people think that we should discourage non-essential flights,such as tourist travel,rather than to limit the use of cars.To...
With dual use fuel cells, everyone who consumes energy could also produce it. Late at night, a man drives home in London and connects his car into the “world-wide hydrogen web", which it supplies with electricity. A few hours later, a man in Beijing uses that electricity to power the...
Some scientists see radical changes in the way the human race co-operates, Hydrogen creates clectricity, and is also created byit. With dual use fuel cells, everyone who consumes energy could also produce it ,Late at night, a man drives home in London and connects his car into the “wor...
With dual use fuel cells everyone who consumes energy could also produce it. Late at night a man drives home in London and connects his car into the “world-wide hydrogen web ” which it supplies with electricity. A few hours later a man in Beijing uses that electricity to power the ...
Thomas Edison died of diabetes at his home in New Jersey, on October 18, 1931 and in honor of his contributions, Life magazine (USA), in a special double issue in 1997, placed Edison first in the list of the “100 Most Important People in the Last 1000 Years”, noting that the light...