Select all of the answers that apply.

Physics

2 answers:

kolezko [41]3 years ago

7 0

Answer:

-law of original horizontality

-law of superposition

-law of original lateral continuity

-law of cross-cutting or intrusive relationships

Explanation:

Relative dating is the science that many scientist use to set an order, or to figure out the order in which past events happened, this is without actually invetigating the natural age of the elements, and from stratigraphy and paleontology the laws of relative dating are:

Uniformitarianism
Intrusive relationships
Cross-cutting relationships
Inclusions and components
Original horizontality
Superposition
Faunal succession
Lateral continuity

postnew [5]3 years ago

3 0

Here are the answers to the given question above.
Relative dating uses laws or principles of stratigraphy and paleontology. These laws of relative dating are:
-law of original horizontality
-law of superposition
-law of original lateral continuity
-law of cross-cutting or intrusive relationships
Hope these are the answers that you are looking for.

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A woman with mass 50 kg is standing on the rim of a large disk that is rotating at 0.80 rev/s about an axis through its center.

My name is Ann [436]

Answer:

angular momentum, $L=1.4\times 10^4\ kg-m^2/s$

Explanation:

Given that,

Mass of the woman, m = 50 kg

Angular velocity of the disk, $\omega=0.8\ rev/s=5.02\ rad/s$

Mass of the disk, m' = 2670 kg

Radius of the disk, R = 4 m

We need to find the magnitude of the total angular momentum of the woman–disk system. The moment of inertia of the system is equal to the sum of moment of inertia of women and the moment off inertia of the disk.

$I=mR^2+\dfrac{1}{2}m'R^2\\\\I=R^2(m+\dfrac{1}{2}m')\\\\I=(4)^2\times (50+\dfrac{1}{2}\times 270)\\\\I=2960\ kg-m^2$

The angular momentum is given by :

$L=I\omega\\\\L=2960\times 5.02\\\\L=14859.2\ kg-m^2/s$

$L=1.4\times 10^4\ kg-m^2/s$

So, the magnitude of the total angular momentum of the woman–disk system is $1.4\times 10^4\ kg-m^2/s$ . Hence, this is the required solution.