Q1: Metals in general have a low value of thermal

ANS:C - inertia

Inertia is a property of matter that describes its resistance to changes in motion or rest. It is a fundamental concept in physics, particularly in classical mechanics. Here's a detailed explanation of inertia:

1. Resistance to Change in Motion: Inertia manifests as the tendency of an object to maintain its current state of motion (or rest) unless acted upon by an external force. This means that an object at rest will remain at rest, and an object in motion will continue moving at a constant velocity in a straight line unless acted upon by a net external force.
2. Newton's First Law of Motion: Inertia is formally described by Newton's First Law of Motion, which states that an object will remain at rest or in uniform motion in a straight line unless acted upon by a net external force. This law essentially encapsulates the concept of inertia and is fundamental to understanding the behavior of objects in the absence of external influences.
3. Mass and Inertia: The inertia of an object is directly proportional to its mass. Objects with greater mass have greater inertia, meaning they are more resistant to changes in their state of motion. This relationship is evident in everyday experiences; for example, it is harder to push or stop a heavy object compared to a lighter one.
4. Types of Inertia: Inertia can be categorized into different types based on the type of motion being considered:
   • Translational Inertia: This refers to an object's resistance to changes in its linear motion (i.e., motion along a straight line).
   • Rotational Inertia: Also known as angular inertia or moment of inertia, this refers to an object's resistance to changes in its rotational motion (i.e., spinning or rotating about an axis).
5. Application in Engineering and Everyday Life: Understanding inertia is crucial in various fields, including engineering, transportation, and sports. Engineers must account for inertia when designing structures, vehicles, and machinery to ensure stability, safety, and efficiency. In everyday life, inertia influences our experiences, such as the sensation of being pushed back into our seats when a car accelerates or the difficulty of stopping a moving bicycle.