josie311251
18.10.2020 •
Physics
11. Which device turns a generator to produce energy?
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Ответ:
Turbine
Explanation:
Most of U.S. electricity generation is from electric power plants that use a turbine or similar machine to drive electricity generators. A turbine converts the potential and kinetic energy of a moving fluid (liquid or gas) to mechanical energy.
Ответ:
v = 64.8 km / h
Explanation:
This is a uniform rectilinear motion exercise, the speed is
v = d / t
where d is the distance traveled and t the time to travel the distance
the bridge has d = 180 m and runs it at t = 10 s, we use a reference point on the truck for measurement
V = 180/10 .v = 18 m / s
we reduce to km / h
v = 18 m / s (1 km / 1000m) (3600 s / 1 h)
v = 64.8 km / h