a solid of density 2700 kg/m³ and volume 0.0015 m³ is completely immersed in alcohol of density 800kg/m³.Calculate:

1) weight on solid in SI system
2) upthrust on solid in SI system
3) apparent weight of solid in alcohol
4) will the apparent weight of solid be less or more,if it is immersed completely in brine solution?give a reason [g=10m/s²]

1- weight of solid 40.5N 2-upthrust 12N 3-apparent weight 28.5N

To calculate the weight on the solid, we need to use the formula:

Weight = mass * gravity

We can find the mass of the solid using the formula:
Mass = density * volume

Let's calculate the answers step by step:

1) Weight on solid in SI system:
Mass = density * volume
= 2700 kg/m³ * 0.0015 m³
= 4.05 kg

Weight = mass * gravity
= 4.05 kg * 10 m/s²
= 40.5 N

So, the weight on the solid is 40.5 Newtons (N).

2) Upthrust on solid in SI system:
The upthrust (also known as buoyant force) on an object immersed in a fluid is equal to the weight of the fluid displaced by the object.

The volume of the solid is 0.0015 m³, so the volume of fluid displaced is also 0.0015 m³.

Upthrust = Density of fluid * Volume of fluid displaced * gravity
= 800 kg/m³ * 0.0015 m³ * 10 m/s²
= 12 N

So, the upthrust on the solid is 12 Newtons (N).

3) Apparent weight of solid in alcohol:
The apparent weight of an object submerged in a fluid is the difference between the weight of the object and the upthrust on it.

Apparent weight = Weight - Upthrust
= 40.5 N - 12 N
= 28.5 N

So, the apparent weight of the solid in alcohol is 28.5 Newtons (N).

4) Will the apparent weight of the solid be less or more if it is immersed completely in brine solution? Give a reason.

The apparent weight of a solid immersed in a fluid depends on the density of the fluid.

Brine solution is denser than alcohol because it contains a high concentration of salt. Since the density of the brine solution is higher than that of alcohol, the upthrust on the solid will be greater when immersed in the brine solution. Therefore, the apparent weight of the solid will be even less in the brine solution compared to when it is in alcohol.

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