## What is the third law of thermodynamics and why is it important?

The third law of thermodynamics has two important consequences: it defines the sign of the entropy of any substance at temperatures above absolute zero as positive, and it provides a fixed reference point that allows us to measure the absolute entropy of any substance at any temperature. What is the 3rd Law of Thermodynamics and … Read more

## What is the difference between position velocity and acceleration?

Velocity is the rate of change of position with respect to time, whereas acceleration is the rate of change of velocity. Both are vector quantities (and so also have a specified direction), but the units of velocity are meters per second while the units of acceleration are meters per second squared. What is velocity and … Read more

## What is the simple definition of electric potential?

electric potential, the amount of work needed to move a unit charge from a reference point to a specific point against an electric field. Typically, the reference point is Earth, although any point beyond the influence of the electric field charge can be used. electric potential. What is electric potential difference in physics? Electric potential … Read more

## What is law of conservation of mechanical energy?

According to the principle of conservation of mechanical energy, The total mechanical energy of a system is conserved i.e., the energy can neither be created nor be destroyed; it can only be internally converted from one form to another if the forces doing work on the system are conservative in nature. What is energy conservation … Read more

## What is gravitational potential energy and examples?

Gravitational energy is potential energy stored in an object based on its distance from the Earth. Potential energy is energy that is stored in an object or substance. Gravitational energy is a form of potential energy. What is gravitational potential energy in simple words? Gravitational energy is potential energy stored in an object based on … Read more

## How do you find the magnitude of two vectors?

What is magnitude of a vector in physics? The magnitude of a vector is the length of the vector. The magnitude of the vector a is denoted as ∥a∥. See the introduction to vectors for more about the magnitude of a vector. Formulas for the magnitude of vectors in two and three dimensions in terms … Read more

## What is zeroth law of thermodynamics with example?

The Zeroth law of thermodynamics states that if two bodies are individually in thermal equilibrium with a separate, third body, the first two are also in thermal equilibrium with each other, or in other words, thermal equilibrium is transitive. What is zeroth law of thermodynamics in physics? The zeroth law of thermodynamics is very similar … Read more

## What is law of conservation of momentum example?

Consider this example of a balloon, the particles of gas move rapidly colliding with each other and the walls of the balloon, even though the particles themselves move faster and slower when they lose or gain momentum when they collide, the total momentum of the system remains the same. What is conservation of momentum simple … Read more

## What is the SI unit of drift velocity?

It is a vector physical quantity; both magnitude and direction are required to define it. What is drift velocity in physics class 11? Drift velocity is defined as the average velocity attained by the particles (electrons) of a given material due to an electric field that is proportional to current. What is the drift velocity … Read more

## Why is physics called the basic science?

The basic sciences are defined as the scientific disciplines of mathematics, physics, chemistry, and biology. They are called basic sciences because they provide a fundamental understanding of natural phenomena and the processes by which natural resources are transformed. What is the best definition of physics? What is physics? Physics is the branch of science that … Read more