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sergey [27]
3 years ago
9

Which of the following is a result of a change in pressure? A. Frost wedging B. Chemical feathering C. Oxidation D. Exfoliation

Physics
1 answer:
Stells [14]3 years ago
7 0
The answer is D. Exfoliation. Exfoliation is a type of physical or mechanical weathering which is also referred to as release of pressure. It occurs when layers of rock separate from the stripped rocks as an effect of the pressure released during the wearing down of rock particles by friction due to water, wind or ice.
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A 5 kg block is being pushed horizontally across a level surface at a constant velocity. What is the magnitude of the Normal for
luda_lava [24]

Answer:

50 N.

Explanation:

On top of a horizontal surface, the normal force acting on an object is equivalent to the force of gravity acting on the object. That is:

\displaystyle \begin{aligned} F_N = F_g & = ma \\ & = mg\end{aligned}

The mass of the block is 5 kg and the given force due to gravity is 10 N/kg. Substitute and evaluate:

\displaystyle F_N = F_g = (5\text{ kg})(10 \text{ N/kg}) = 50 \text{ N}

In conclusion, the normal force acting on the block is 50 N.

5 0
2 years ago
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marishachu [46]
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6 0
3 years ago
1. Although the sun is shining, it is a little chilly today at the beach. You look at your portable thermometer, which says it's
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