Question

what is the order of rotational symmetry of a table fan with (i) 3 blades (ii) 4 blades​

Answer 1

Step-by-step explanation:

Lake Huron /ˈhjʊrɒn, ˈhjʊrən/ is one of the five Great Lakes of North America. Hydrologically, it comprises the easterly portion of Lake Michigan–Huron, having the same surface elevation as its westerly counterpart, to which it is connected by the 5-mile-wide (8.0 km), 20-fathom-deep (120 ft; 37 m) Straits of Mackinac. It is shared on the north and east by the Canadian province of Ontario and on the south and west by the state of Michigan in the United States. The name of the lake is derived from early French explorers who named it for the Huron people inhabiting the region. The Huronian glaciation was named due to evidence collected from Lake Huron region. The northern parts of the lake include the North Channel and Georgian Bay. Across the lake to the southwest is Saginaw Bay. The main inlet is the St. Marys River, and the main outlet is the St. Clair River.

Lake Huron

Brucesky.jpg

Lake Huron shorelines

Location of Lake Huron in North America.Location of Lake Huron in North America.Lake Huron

Lake Huron bathymetry map.png

Lake Huron bathymetric map.[1][2][3][4][5][6] The deepest point is marked with "×".[7]

Location

North America

Group

Great Lakes

Coordinates

44.8°N 82.4°W

Lake type

Glacial

Primary inflows

Straits of Mackinac, St. Marys River

Primary outflows

St. Clair River

Catchment area

51,700 sq mi (134,100 km2)[8]

Basin countries

Canada and the United States

Max. length

206 mi (332 km)[8]

Max. width

183 mi (295 km)[8]

Surface area

23,007 sq mi (59,588 km2)[8]

Average depth

195 ft (59 m)[8]

Max. depth

750 ft (229 m)[8]

Water volume

850 cu mi (3,543 km3)[8]

Residence time

22 years

Shore length1

1,850 mi (2,980 km) plus 1,980 mi (3,190 km) for islands[9]

Surface elevation

577 ft (176 m)[8]

Islands

Manitoulin

Sections/sub-basins

Georgian Bay, North Channel

Settlements

Bay City, Alpena, Cheboygan, St. Ignace, Port Huron in Michigan; Goderich, Sarnia, Owen Sound in Ontario

References

[10]

1 Shore length is not a well-defined measure.