Work and Energy
📘 Chapter Overview This chapter explains the concepts of work, energy, and power in science. It covers how work is done, how energy changes form, …
Gravitation
📘 Chapter Overview The chapter “Gravitation” introduces the universal force of attraction between objects – gravity. It explains Newton’s law of gravitation, free fall, weight, …
Force and Laws of Motion
🔷 Chapter Overview This chapter introduces Newton’s Laws of Motion, explains the concept of force, inertia, momentum, and gives a mathematical foundation to understand how …
MOTION
Chapter 7 – Motion (Class 9 Science)This chapter introduces the fundamental concepts of motion in physics. It helps students understand how objects move, how their …
An infinitely long wire, located on the z-axis, carries a current
along the
-direction and produces the magnetic field
. The magnitude of the line integral
along a straight line from the point
to
is given by: ![Rendered by QuickLaTeX.com \[\text{[} \mu_0 \text{ is the magnetic permeability of free space.] }\]](https://physicsqanda.com/wp-content/ql-cache/quicklatex.com-6fb2ec46352283c27508e5caa3e72929_l3.png)
![Rendered by QuickLaTeX.com \[\text{[} \mu_0 \text{ is the magnetic permeability of free space.] }\]](https://physicsqanda.com/wp-content/ql-cache/quicklatex.com-6fb2ec46352283c27508e5caa3e72929_l3.png)
Problem: An infinitely long wire, located on the z-axis, carries a current along the -direction and produces the magnetic field . The magnitude of the …
A dimensionless quantity is constructed in terms of electronic charge
, permittivity of free space
, Planck’s constant
, and speed of light
. If the dimensionless quantity is written as
and
is a non-zero integer, then
is given by
Problem: A dimensionless quantity is constructed in terms of electronic charge , permittivity of free space , Planck’s constant , and speed of light . …
Newton’s Laws of Motion: Definitions, Examples, and Real-World Applications
Imagine riding in a car that suddenly stops — the body continues to move forward until the seatbelt pulls it back. This everyday experience perfectly …
How Fast Do Electromagnetic Waves Travel?
Electromagnetic waves are the backbone of modern technology, powering everything from radio broadcasts to MRI machines. A fundamental question about these waves is: How fast …
How To Find Instantaneous Velocity
To find the instantaneous velocity of an object, we have to use the concept of limits and derivatives(calculus). Instantaneous velocity is defined as the velocity …