Referring to the _______scale is a way to estimate the wind speed.

Physics

2 answers:

Jlenok [28]4 years ago

6 0

Answer:

Beaufort Scale

Explanation:

Sir Francis Beaufort, an Irish hydrographer, devised a scale to measure the wind speed in 1805. He devised this scale when he was serving on <em>HMS Woolwich</em>. Known as <em>Beaufort Wind Force Scale, </em>it measures and relates the speed of wind to conditions observed at land or sea. It was first used and officially adopted in 1830 on HMS Beagle where Robert Fitzroy was the captain.

No standard scale was present before the Beaufort scale. Initially, it had 13 classes (0-12) which related the wind condition quality and its effects on sails of a frigate. It was further extended in 1946 with addition of 5 more classes (13 to 17). Although, nowadays this extended scale is used only in mainland China and Taiwan.

Wind speed (as per 1946 scale):

$v = 0.836 B^{\frac{3}{2}}$ m/s

where,

v = equivalent speed of wind 10m above the surface of the sea

B = Beaufort Scale number

disa [49]4 years ago

5 0

Answer:

Beaufort scale

Explanation:

The Beaufort Wind Scale is titled after an admiral in Royal Navy, Sir Francis Beaufort. Of 1805, he created the scale to measure wind velocity by observing how sails shift in the wind.

Beaufort scale is broadly categories the wind in to 12 parts which he termed as Force 0 to Force 12.

force 0 termed as calm with speed less than 1 m/hr

force 1 termed as light air with speed 1- 3 mph

force 2 termed as slight breeze with speed 4-7 mph

force 3 termed as gentle breeze with speed 8-12 mph

force 4 termed as moderate breeze with speed 13-18 mph

force 5 termed as fresh breeze with speed 19-24 mph

force 6 termed as strong breeze with speed 25-31 mph

force 7 termed as moderate gale with speed 32-38 mph

force 8 termed as fresh gale with speed 39-46 mph

force 9 termed as strong gale with speed 47-54 mph

force 10 termed as whole gale with speed 55-63 mph

force 11 termed as storm gale with speed 64 -74 mph

force 12 termed as hurricane with speed 75 mph

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When light moves from air to glass, part of the light is reflected and part of it is refracted. In the image, which ray shows re

marissa [1.9K]

You have not provided the diagram, therefore, I cannot provide an exact answer.
However, I will try to help by explaining how to solve this problem.

When light moves from air to glass:
1- part of the light is reflected back into the air where the angle of incidence is equal to the angle of reflection
2- part of the light enters the water and refracts. The angle of refraction can be calculated using Snell's law.

In a diagram, the reflected ray would be the one getting back into air while the refracted ray would be the one entering the water.

You can check the attached diagram for further illustrations.

Hope this helps :)