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Nataliya [291]
3 years ago
6

What does an unconformity in a sequence of rock layers reveal about geologic history?

Physics
2 answers:
andreev551 [17]3 years ago
7 0
An unconformity, or abnormality in the layers of rocks, signifies that the process of layering was somehow interrupted. The only feasible choice for this would be (B), where erosion would have interrupted the layering process.
Debora [2.8K]3 years ago
5 0

A rock layer must have been turned upside down

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Swinging a golf club or baseball bat are examples of ______________ stretching.
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Answer:

Static stretching is the answer.

Explanation:

Static stretching is the most common form that greatly improves flexibility. However, static stretches does little to contract the muscles needed to generate powerful golf swings. Dynamic stretches help improve your range of motion while reducing muscle stiffness.

6 0
3 years ago
Two buses are driving along parallel freeways that are 5mi apart, one heading east and the other heading west. Assuming that eac
Oksanka [162]

Answer:

101.54m/h

Explanation:

Given that the buses are 5mi apart, and that they are both driving at the same speed of 55m/h, rate of change of distance can be determined using differentiation as;

Let l be the be the distance further away at which they will meet from the current points;

l=\sqrt{13^2-5^2}=12m\\\\\frac{dl}{dt}=-(55m/h+55m/h})\\\\=-110m/h#The speed toward each other.

\frac{dh}{dt}=0, \ \ \ \ h=constant\\\\h^2+l^2=b^2\\\\2h\frac{dh}{dt}+2l\frac{dl}{dt}=2b\frac{db}{dt}\\\\2\times5\times0+2\times12\times(-110)=2\times13\frac{db}{dt}\\\\\frac{db}{dt}=-101.54m/h

Hence, the rate at which the distance between the buses is changing when they are 13mi apart is 101.54m/h

4 0
2 years ago
What conclusions can be drawn about the existence of nitrogen-14 and nitrogen-15? A) They are isotopes of nitrogen and they cont
AleksandrR [38]
<span>Answer: A) They are isotopes of nitrogen and they contain the same number of protons and electrons but each contains a different number of neutrons - 7 and 8 respectively.

Isotopes are atoms of a chemical element whose nucleus has the same atomic number, Z, but different atomic mass, A. The atomic number corresponds to the number of protons in the atom, therefore the isotopes of an element contain the same number of protons and electrons (atoms have to be neutral particles). The difference in atomic masses arises from the difference in the number of neutrons in the atomic nucleus.
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5 0
2 years ago
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Which statement best describes a risk associated with using radioisotopes in nuclear reactors? A Radioisotopes are very expensiv
maw [93]
The correct answer is :
<span>D If the radiation were to leak out of the reactors, it could cause significant damage to living organisms.
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In fact, the ionizing radiation that leaks out from a nuclear reactor is able to modify the DNA of the cells of living organisms, causing mutations and/or diseases like cancer.</span>
6 0
3 years ago
1. Which has more momentum: a bowling ball with a velocity of 7.0 m/s or a basketball with a
Andrews [41]

Answer:

kenitec energy

Explanation:

because kinetic and mass have same

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