An electric fan is considered to be a mixture of several simple machines. It includes the Wheel and Axle type, wedges, and the Inclined plane types. The blades of an electric fan are the inclined planes and the wedges.

5 0

3 years ago

Now remember that humans have two eyes that are approximately 7 centimeters apart. Estimate the diffraction limit for human visi

aalyn [17]

Answer:

The diffraction limit for human vision is 2.1 arcseconds.

Explanation:

The diffraction limit of two eyes with a diameter of 7 cm = 0.07 m is equal to:

$Diffraction-limit=2.5x10^{5} *(\frac{600x10^{-9} }{0.07} )=2.1arcs$

4 0

3 years ago

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Trevor and Nick are taxi drivers. Trevor drives a taxi using diesel oil while Nick drives a taxi using LPG. Whose taxi will caus

Natalija [7]

Answer:

Trevor's taxi would cause higher levels of air pollution

Explanation:

Trevor's taxi use diesel oil.

Diesel is less cleaner than LPG.

Compared to automotive pollution from petrol and diesel, pollutants from LPG-driven cars include lower amounts of petroleum hydrocarbons, nitrogen oxides , sulphur oxides, ozone contamination and particulate matter.

8 0

4 years ago