The Lorentz force is a force that affects things that have both electric charges and motion, like moving electrons or protons. This force is created when a charged particle moves through a magnetic field. The magnetic field pulls on the moving charge and changes the direction of its path, making it curve or bend. The …
Science
The permittivity of free space is a big and fancy term used in science to describe how easy or hard it is for electricity to travel through nothing, also known as a vacuum. Just like how a ball moves more easily through the air than through water, electricity can move more easily through some materials …
Centripetal force is the force required to keep an object moving in a circular path. The word “centripetal” comes from the Latin words “centrum” meaning center and “petere” meaning to seek, so centripetal force is the force that “seeks the center” of a circle. Centripetal Force Formula The formula for centripetal force is: F = …
Centrifugal force is the apparent force that makes an object seem to move away from the center of rotation when it is actually moving in a circular path. It is not a real force, but rather a result of inertia, the tendency of an object to keep moving in a straight line. The faster an …
Difference between Speed and Velocity # Speed Velocity 1. Speed is a scalar quantity. Velocity is a vector quantity. 2. It only describes the magnitude of motion. It is measured in units of distance per unit of time (e.g., meters per second). 3. It is always positive or zero. It can be positive, negative, or …
Tensile testing is a way to measure how strong something is. Imagine you have a piece of string or a rubber band, and you want to know how much you can pull on it before it breaks. That’s what tensile testing does, but with different materials like metals, plastics, and even some foods. Scientists and …
Tensile strain is a term used to describe the amount of deformation or stretching that occurs in a material when it is subjected to a pulling force or tension. It is a measure of how much a material has been elongated compared to its original length.Some daily life examples are listed below: Formula of Tensile …
Mechanical properties are the physical characteristics of materials that determine how they behave under external forces such as tension, compression, bending, or twisting. These properties are important because they help engineers design structures and machines that can withstand different types of loads. There are several mechanical properties that are commonly used to describe materials: The …
Heat and radiation are two different concepts. Heat is the movement of energy from a hotter object to a cooler object due to a temperature difference, while radiation is the emission of energy in the form of electromagnetic waves or particles. When objects with different temperatures touch, heat can transfer between them through conduction or …
Fundamental quantities in physics are physical quantities that cannot be defined in terms of other quantities. They are the building blocks of all other physical quantities, and they form the basis of the International System of Units (SI). The seven fundamental quantities in SI are: Fundamental Quantities as “Base Units” These fundamental quantities are considered …
Distance is the total length of the path travelled by an object, while displacement is the change in position of an object from its starting point to its ending point, including the direction. For example, imagine you’re walking from your house to the park. The distance you cover is the total length of the path …
Hooke’s Law is a rule in science that says when you stretch or squish something, like a rubber band or a spring, the amount it stretches or squishes is related to how hard you’re pulling or pushing on it. The more you pull or push, the more it stretches or squishes. This rule helps us …
Engineering stress is the force applied to an object divided by its original area, while true stress is the force applied to an object divided by its actual area. The difference is that engineering stress assumes that the area remains constant, whereas true stress takes into account the change in an area that occurs as …
Bending stress is like when you try to bend a stick or a straw. The force you use to bend it creates stress inside the stick or straw, which resists the bending. The maximum stress happens on the side of the stick or straw that’s farthest from the middle, where it doesn’t bend. This stress …
Elastic modulus is a property of materials that tells us how stiff or resistant they are to be stretched or compressed when a force is applied. It is like a measure of how much a material will bend or change shape under stress. Materials with a high elastic modulus are harder to stretch or bend …