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BaLLatris [955]
3 years ago
9

Weathering of rocks can occur in many ways. In the western United States, strong winds can erode huge rock formations by blowing

millions of tiny grains of sand at these rocks. Which term accurately describes this type of weathering?
Physics
1 answer:
stepan [7]3 years ago
3 0

Answer: physical or mechanical weathering

Explanation:

Mechanical weathering which is also referred to as the physical weathering occurs when a rock is broken down into smaller pieces. In this case, there will be a physical change of the rock but its composition will not change.

Some examples include ice freezing and expansion of the cracks in the rock, Smstrong winds that carrycpieces of sand which then sandblast surfaces, moving water which causes abrasion etc.

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Answer:

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Explanation:

(a)

The absolute pressure is given by the formula

P = P_{o} + \rho gh

Where P is the absolute pressure

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g is the acceleration due to gravity (Take g = 9.8 m/s^{2} )

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Using the formula

P = P_{o} + \rho gh

P = 101300 + (1000×9.8×30.0)

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Hence, the absolute pressure at the bottom of the freshwater lake is 395.3 kPa

(b)

For the force exerted

From

P = F/A

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From F = P × A

F = 395300 × 0.0913269

F = 36101.5 N

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