An Iron Block of Density $\rho$ _Fe and of Volume L³ Is Immersed in a Fluid

question 8

Multiple Choice

An iron block of density $\rho$ _Fe and of volume l³ is immersed in a fluid of density $\rho$ _fluid.The block hangs from a scale which reads W as the weight.The top of the block is a height h below the surface of the fluid.The correct equation for the reading of the scale is

• A)W = (\(\rho\)_Fe-\(\rho\)_fluid)ghl².
• B)W = (\(\rho\)_fluid -\(\rho\)_Fe)gl³.
• C)W = (\(\rho\)_Fe -\(\rho\)_fluid)gl³.
• D)W = (\(\rho\)_Fe + \(\rho\)_fluid)ghl².
• E)W = (\(\rho\)_Fe + \(\rho\)_fluid)gl³.

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Definitions:

Spinal Plexuses

Networks of interlinked nerves originating from the spinal cord, which supply sensation and motor control to various parts of the body.

Subarachnoid Space

The area between the arachnoid mater and pia mater surrounding the brain and spinal cord, filled with cerebrospinal fluid.

Meninges

The protective membranes covering the brain and spinal cord, divided into three layers: dura mater, arachnoid mater, and pia mater.

Flexor Muscles

Muscles that decrease the angle between the bones of a joint, allowing bending, typically found in the limbs.