The threshold velocity because that silt is lower than the threshold velocity because that sand.Hope this helps!-Payshence xoxo

The correct answer is alternative B, lower than the threshold velocity because that sand

Explanation:

Threshold velocity of the floor is the velocity where soil has actually overcome the gravitational force and the inter bit force and it start moving. The factors which impact the threshold velocity the soil room –

a)Lower the sand content , higher will be the threshold velocity

b)Size that aggregates in the soil – the larger the dimension of the accumulation the bigger will it is in its velocity

c)Size of floor particles – soils through soil particle size greater than 1 mm shall relocate easily.

Considering every the over three factors, the is clear the the threshold velocity that silt is reduced than the of sand as the sand content in silt is high and also its particles room finer than that the sand particles.

to create the fragment the speed have to be greater than 2.25 10⁸ m / s

Explanation:

In this exercise we must use the relation of the index of refraction with the rate of irradiate in a vacuum and also a product medium

n = c / v

where c is the rate of light in the vacuum, v the rate of light in the material medium and also n the ratio of rafraccio

in this instance they offer us the the medium matter water them that has a refractive table of contents of

n = 1,333

we clear

v = c / n

let"s calculate

v = 3 10⁸ / 1,333

v = 2.25 10⁸ m / s

to create the particle the speed need to be greater than 2.25 10⁸ m / s

Thank you for posting her question here at ns hope the price will help you. Feel totally free to ask an ext questions.The threshold velocity for silt is lower 보다 the threshold velocity for sand

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