subject
Biology, 04.04.2020 10:30 sanakhalid8881

Maglev trains float on a cushion of air, eliminating friction. This lack of friction and the trains' aerodynamic designs allow
these trains to reach unprecedented ground transportation speeds of more than 310 mph (500 kph). Developers say that
maglev trains will eventually link cities that are up to 1,000 miles (1,609 km) apart. At 310 mph, you could travel from Paris to
Rome in just over two hours.
Magnetic Levitation (maglev) trains use electricity to generate magnetic fields. How are these magnetic fields related to the
forward motion of the train?
Electricity is used to generate a magnetic field opposite that of the train so
the train is pulled forward along a frictionless surface
Electricity is used to generate a magnetic field of the same polarity as that
at the base of the train. This elevates the train and also moves it forward.
Electricity generates a magnetic field as it flows through coils on the train
A large electromagnetic at the opposite end of the track pulls the train to
its destination and lifts it off the track
A current below the train generates a magnetic field that levitates the
train, by using the repulsion of like charges. Ele y flows through coils
on the side of the track, as the current alterna t ls the train forward
and pushes it from the back

ansver
Answers: 2

Another question on Biology

question
Biology, 22.06.2019 09:10
Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.
Answers: 1
question
Biology, 22.06.2019 14:30
Alexa is preparing for a presentation by creating note cards identifying keywords that describe various features of each type of plate boundary. which words apply to all three of the convergent boundaries?
Answers: 2
question
Biology, 22.06.2019 17:00
Which of the following do all living things have in common
Answers: 2
question
Biology, 22.06.2019 21:00
Brass gets discoloured in air because of the presence of which of the following gases in air? a. oxygen b. hydrogen sulphide c. carbon dioxide d. nitrogen
Answers: 2
You know the right answer?
Maglev trains float on a cushion of air, eliminating friction. This lack of friction and the trains'...
Questions
question
Mathematics, 23.06.2020 19:01
question
Mathematics, 23.06.2020 19:01
question
English, 23.06.2020 19:01
question
Mathematics, 23.06.2020 19:01
Questions on the website: 13722360