Fluid in physics refers to liquids and gases. To study fluid flow we have to make the following assumptions: We consider fluids to be incompressible We assume that they have little or no internal friction or viscosity. Streamline and turbulent flow. The path followed by a small element of a moving fluid is called […]
Concave and convex mirrors They are also known as spherical mirrors and are formed when a spherical glass is silvered . If the inside is silvered a convex or diverging is formed while a concave or converging mirror is formed when the outside is silvered. Parts of a spherical mirror. Centre of curvature (C)– this
REFLECTION AT CURVED SURFACES Read More »
Sound energy is produced when an object vibrates. The sound vibrations cause waves of pressure that travel through a medium, such as air, water, wood or metal. Sound energy is a form of mechanical energy. Examples of Sound Energy An air conditioning fan An airplane taking off A ballerina dancing in toe shoes A balloon