Answer: D. A person pushing a couch without being able to move it.
Explanation:
The reason why is because static friction is where it prevents surfaces from sliding past each other, the static friction strength changes to match the applied force. If someone was to increase their force the static friction would still prevent the object from moving....
as in what the person above me said that goes towards sliding friction because if you were trying to push something with static friction if you have more than one person applying force then you would be able to move the object but with only having one the static friction would be greater then the applied force.
<span>Magnetism is a force which attract or repel a magnetic object like iron.
Magnetism is not a major characteristic used to identify minerals, because, every mineral do not have magnetic properties in it. Only few minerals like Iron-nickel have it and thus, it is not possible to identify a mineral using magnetism.</span>
Answer: The
of
is
.
Explanation:
Given: ![[Ag^{+}] = 1.3 \times 10^{-4} M](https://tex.z-dn.net/?f=%5BAg%5E%7B%2B%7D%5D%20%3D%201.3%20%5Ctimes%2010%5E%7B-4%7D%20M)
The reaction equation will be written as follows.

This shows that the concentration of
is half the concentration of
ion. So,
![[CrO^{2-}_{4}] = \frac{1.3 \times 10^{-4}}{2}\\= 0.65 \times 10^{-4} M](https://tex.z-dn.net/?f=%5BCrO%5E%7B2-%7D_%7B4%7D%5D%20%3D%20%5Cfrac%7B1.3%20%5Ctimes%2010%5E%7B-4%7D%7D%7B2%7D%5C%5C%3D%200.65%20%5Ctimes%2010%5E%7B-4%7D%20M)
The expression for
of this reaction is as follows.
![K_{sp} = [Ag^{+}]^{2}[CrO^{2-}_{4}]](https://tex.z-dn.net/?f=K_%7Bsp%7D%20%3D%20%5BAg%5E%7B%2B%7D%5D%5E%7B2%7D%5BCrO%5E%7B2-%7D_%7B4%7D%5D)
Substitute values into the above expression as follows.
![K_{sp} = [Ag^{+}]^{2}[CrO^{2-}_{4}]\\= (1.3 \times 10^{-4})^{2} \times 0.65 \times 10^{-4}\\= 1.1 \times 10^{-12}](https://tex.z-dn.net/?f=K_%7Bsp%7D%20%3D%20%5BAg%5E%7B%2B%7D%5D%5E%7B2%7D%5BCrO%5E%7B2-%7D_%7B4%7D%5D%5C%5C%3D%20%281.3%20%5Ctimes%2010%5E%7B-4%7D%29%5E%7B2%7D%20%5Ctimes%200.65%20%5Ctimes%2010%5E%7B-4%7D%5C%5C%3D%201.1%20%5Ctimes%2010%5E%7B-12%7D)
Thus, we can conclude that the
of
is
.
1. 134
2. 283
3. 58.3
4. 212
5. 149
6. 180
7. 400
8. 100
9. 127
10. 77