The picture below shows metamorphic rocks on the Earth's surface.
1 answer:
Referring to the attached image below which represents the complete rock cycle, we will find that:
The metamorphic rocks are formed due to heat and pressure applied either on igneous rocks or on sedimentary rocks.
This means that heat and pressure are the main factors in the formation of metamorphic rocks.
Based on the above, the best choice would be:
a. extreme changes in temperature and pressure
The metamorphic rocks are formed due to heat and pressure applied either on igneous rocks or on sedimentary rocks.
This means that heat and pressure are the main factors in the formation of metamorphic rocks.
Based on the above, the best choice would be:
a. extreme changes in temperature and pressure
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Answer:
v = 4.4 m / s
Explanation:
Unfortunately, the exercise scheme does not appear. Let's analyze the problem the marble leaves point A with an initial velocity, goes down and then rises to a given height where its velocity is zero, in the whole trajectory they tell us that the resistance is zero, so we can use the conservation relations of the enegy.
Starting point. Point A
Em₀ = K + U = ½ m v2 + mg y_a
point B.
Em_f = U = m g y
the energy is conserved
Em₀ = Em_f
½ m v² + mg y_a = m g y
½ m v² = m g (y -y_a)
v =
In the exercise the diagram is not seen, but the height of point A must be known, suppose that y_a = 4 m
v =
v = 4.4 m / s