Scientifically speaking, a fluid is a substance capable of flowing and deforms when exposed to significant force, taking shape with its surroundings. Fluid molecules are sparsely populated particles in constant random motion as they collide with surrounding surfaces and each other. In contrast, solid molecules are laid in regular patterns and are tightly packed, leaving …
Water from oceans and seas contains dissolved salts, atmospheric gases, and inorganic matter. The density of water with dissolved substances is higher than pure water. Saltwater is water that contains dissolved salts. Water from oceans and seas is salty. About 70% of the earth’s surface is covered by water in the seas and oceans, which …
Motion characterizes our daily life. A person walking along a straight path, a bird flying in the air, an airplane flying in the sky, a truck moving along a straight road, and water flowing in a river are examples of motion that we encounter daily. There are different types of motion that we experience in …
Bernoulli’s principle describes a behavior seen in fluids such as liquids or gasses. It predicts that pressure inside a fluid tends to reduce simultaneously when the speed flow of the fluid is high. The reverse also applies, namely that pressure increases when the speed flow lowers. However, this is the opposite of what you may …
When you take a photo with your android phone, laptop, or tablet, you add information to the internal storage system in your electronic device. You add written information to your computer by typing on your keyboard, drawing on your screen, or using a scanner. The camera, keyboard, or scanner helps you provide information and control …
All objects have potential energy stored within them. The amount of potential energy in an object depends on its position in relation to other objects. A trolley at rest has some potential energy caused by its weight. When you push the trolley, you exert force on it, making it move. The moving trolley now has …
When a truck sounding a horn approaches you, the horn’s pitch increases gradually and is highest as the truck passes near you. As the truck recedes, the pitch gradually decreases. The variation in sound as the source approaches the receiver and as it moves away is caused by the Doppler Effect. The Doppler Effect, also …
Atoms comprise subatomic particles such as protons, electrons, neutrons, neutrino, and muon. Electrons, photons, and muons are elementary particles. Elementary particles are not composed of other particles. Protons, neutrons, and mesons are composite particles; they are composed of other particles. Protons and neutrons, also known as nucleons, are found in the nucleus of an atom. …
An object at rest or in motion has different forces acting on it. A book on a table exerts a force on the table. Similarly, external forces are acting on the book. The external forces acting on the book are the force of gravity and an upward force exerted by the table called the normal …
Kinetic energy sounds like a complex concept. However, it is actually quite simple. In fact, we encounter kinetic energy every day. In order to understand kinetic energy, you must first understand what energy is. Energy is the force that an object applies. It is the ability or capacity to do work. There are different forms …
