Answer with Explanation:
We are given that
Weight of an ore sample=17.5 N
Tension in the cord=11.2 N
We have to find the total volume and the density of the sample.
We know that
Tension, T=![W-F_b](https://tex.z-dn.net/?f=W-F_b)
=buoyancy force
T=Tension force
W=Weight
By using the formula
![11.2=17.5-F_b](https://tex.z-dn.net/?f=11.2%3D17.5-F_b)
N
![F_b=V_{object}\times \rho_{water}\cdot g](https://tex.z-dn.net/?f=F_b%3DV_%7Bobject%7D%5Ctimes%20%5Crho_%7Bwater%7D%5Ccdot%20g)
Where
=Volume of object
=Density of water
=Acceleration due to gravity
Substitute the values then we get
![6.3=9.8\times 1000\times V_{object}](https://tex.z-dn.net/?f=6.3%3D9.8%5Ctimes%201000%5Ctimes%20V_%7Bobject%7D)
![V_{object}=\frac{6.3}{9.8\times 1000}=6.43\times 10^{-4} m^3](https://tex.z-dn.net/?f=V_%7Bobject%7D%3D%5Cfrac%7B6.3%7D%7B9.8%5Ctimes%201000%7D%3D6.43%5Ctimes%2010%5E%7B-4%7D%20m%5E3)
Volume of sample=![6.43\times 10^{-4} m^3](https://tex.z-dn.net/?f=6.43%5Ctimes%2010%5E%7B-4%7D%20m%5E3)
Density of sample,![\rho_{object}=\frac{Mass}{volume_{object}}](https://tex.z-dn.net/?f=%5Crho_%7Bobject%7D%3D%5Cfrac%7BMass%7D%7Bvolume_%7Bobject%7D%7D)
Where mass of ore sample=1.79 kg
Substitute the values then, we get
![\rho_{object}=\frac{1.79}{6.43\times 10^{-4}}=2.78\times 10^3 kg/m^3](https://tex.z-dn.net/?f=%5Crho_%7Bobject%7D%3D%5Cfrac%7B1.79%7D%7B6.43%5Ctimes%2010%5E%7B-4%7D%7D%3D2.78%5Ctimes%2010%5E3%20kg%2Fm%5E3)
Density of the sample=![2.78\times 10^{3} kgm^{-3}](https://tex.z-dn.net/?f=2.78%5Ctimes%2010%5E%7B3%7D%20kgm%5E%7B-3%7D)
By the isotherm process, the gas will dissolve in 4.5 atm.
It is important to know about isotherm conditions to solve this problem. The isotherm process is a cycle that has the same temperature but different pressure and volume. The process should follow the rule
P1 . V1 =P2 . V2
where P1 is initial pressure, V1 is initial volume, P2 is final pressure and V2 is the final volume.
From the question above, the parameter given are:
P1 = 2 atm
V1 = 1 L
P2 = 4.5 atm
By substituting the parameters to the rule, we get
P1 . V1 =P2 . V2
2 . 1 = 4.5 . V2
V2 = 2 / 4.5
V2 = 0.44 L
Hence, the gas will dissolve in 4.5 atm.
Find more on isotherm at: brainly.com/question/11775811
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Answer:
1. According to Newton's first law, when forces are balanced there is no acceleration
2.According to Newton's second law, when forces are unbalanced, there is acceleration
Explanation:
this is because Newton's first law of motion states that every object will continue in its state of rest or uniform motion in a straight line unless a resultant force acts on it
hopes this helps, if not, report it, someone else will do it