State Of Matter

Rusting is a chemical reaction between iron (Fe), oxygen (O₂), and moisture (H₂O), forming iron oxide (Fe₂O₃·xH₂O) — commonly known as rust.

In this process:

• Oxygen from the air combines with iron.

• Since oxygen atoms are added, the total mass increases.

The property of a body due to which it opposes the change in rotation about an axis is called the moment of inertia of the body about the axis of rotation.

The unit for all other quantities in options is 'Pascal'.

Here's a little more detail:
Pascal (Pa):

• It's defined as one newton per square meter (N/m²).
  
• This means it measures the force exerted over a unit area.
  

While other units of pressure exist (like bar, psi, and atm), the pascal is the standard unit used in the International System of Units (SI).

Therefore, its unit is the same as the unit of stress.

Here's a breakdown

• The SI unit of Young's modulus is the pascal (Pa).
• Since pascal is equivalent to newtons per square meter (N/m²).

Stormy weather.

• Atmospheric pressure is closely linked to weather patterns.
• A sudden drop in pressure signifies that an area of low pressure is approaching.
• Low-pressure systems are often associated with unsettled weather, including storms, rain, and strong winds.

Hence, it is true that an increase in pressure will result in decreasing the melting point.

= 800 / 16 = 50 N/m²

We know that 1 N/m² = 1 pa (Pascal)

So pressure = 50 (Pa)

• Therefore, pressure force / area, so it is clear that thrust is divided by area to get pressure.
• The SI unit of pressure is Newton/m² or Pascal.