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kodGreya [7K]
3 years ago
9

Which of the following concepts underlies all the others: electron affinity, ionization energy, effective nuclear charge, atomic

size?
Physics
2 answers:
AlekseyPX3 years ago
6 0
The concept that underlies the other would be :
effective nuclear charge zeff
It control Ip and electron affinity by determining attractive force between atom and the electron
it underlies atomic size because it draws the valence electron closer

hope this helps
OleMash [197]3 years ago
5 0
<span>Effective nuclear charge Or Z eff.
Effective nuclear charge Or Z eff controls all of the others i.e; electron affinity, ionization energy and atomic size.
</span>
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wolverine [178]

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3 years ago
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Does energy or matter ever disappear? Explain.
maria [59]

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The first law of thermodynamics doesn't actually specify that matter can neither be created nor destroyed, but instead that the total amount of energy in a closed system cannot be created nor destroyed (though it can be changed from one form to another).

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The lubrication of bone joints is a subject of ongoing medical research. Two bones connected at a joint do not touch. The bones
maks197457 [2]

The question is incomplete. The complete question is :

To measure the effective coefficient of friction in a bone joint, a healthy joint (and its immediate surroundings) can be removed from a fresh cadaver. The joint is inverted, and a weight is used to apply a downward force F⃗ d on the head of the femur into the hip socket. Then, a horizontal force F⃗ h is applied and increased in magnitude until the femur head rotates clockwise in the socket. The joint is mounted in such a way that F⃗ h will cause clockwise rotation, not straight-line motion to the right. The friction force will point in a direction to oppose this rotation.

Draw vectors indicating the normal force n⃗  (magnitude and direction) and the frictional force f⃗ f (direction only) acting on the femur head at point A.

Assume that the weight of the femur is negligible compared to the applied downward force.

Draw the vectors starting at the black dot. The location, orientation and relative length of the vectors will be graded

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The normal force represented by N is equal to the downward force, $F_d$ which is equal in magnitude but it is opposite in direction.

Also the frictional force acts always to oppose the motion because the bone starts moving in a clockwise direction. The frictional force that will be applied to the right direction so that the movement or the rotation at A is opposed.  

5 0
3 years ago
Explain why the elements of the same group exhibit the same chemical behavior​
ElenaW [278]

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All the elements of a period have similar chemical properties because they have the same number of valence electrons in their outermost shell. Their atoms have the same number of electrons in the highest occupied energy level

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3 years ago
These three members of the Noble gas family all have one property in common because they are gases at room temperature. That is
AlekseyPX

B) are compressible.  

gasses are compressible

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3 years ago
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