Knowing how to address efficiency issues in physics is a process based on several key ideas. Here’s one way to conceptualise a problem. Here we will reference a fabricated lightbulb- it uses an amount of energy (ie. 100 J) and gives off some of that energy to heat (20 J). Rather than working through the […]
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In Physics the concept of Free Fall is interesting. It describes the motion of an object and how it falls under gravity and no other forces. We say that something is in free fall when gravity is the only force pulling it downwards. What Is Free Fall? If you drop an object with this is
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Isaac Newton’s Laws of Motion form the foundation of Physics, explaining why and how things move. Once you understand what they are, you will find many other subjects much easier to deal with. Sir Isaac Newton’s First Law states that an object will stay at rest, or else move uniformly in a straight line, unless
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Newton’s Laws of Motion describe how forces cause things to move. But underneath each law is simple mathematics. Once you grasp the mathematics, however, the science becomes much clearer. The 1st Law of Motion states that an object will be at rest or move with uniform speed in a straight line unless acted upon by
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A rubber ball sitting on the floor has low energy. It sits in place and does nothing. To increase the energy, you need to add energy. One way to do this is to lift it up off the floor and drop it. When you lift the ball, you do work against gravity. The work you
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When you heat water in a kettle, energy goes from one type to another. The most notable is electrical to thermal. The kettle element uses electricity to produce heat. This heat is what raises the temperature of the water. The kettle element is in contact with the water. The heat is transferred by conduction. When
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When charged objects attract or repel each other, electrostatic energy is stored. The electrostatic energy store only exists because of electricity. Electrostatic energy is a non-motion form of energy, unlike kinetic energy, in which energy depends on continuous motion of an object. Electrostatic energy depends on the forces between two stationary point charges. The electrostatic
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Kinetic energy means energy in motion. If something is moving, it has kinetic energy, a moving ball, a flying bird as well as a child running along carry kinetic energy. The faster something moves, the more kinetic energy it has. A very easy formula describes kinetic energy, and how mass and velocity combine. The formula
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When we think of the building blocks of matter, our minds often jump to protons, neutrons, and electrons. However, the subatomic world is far richer and more complex, populated by a fascinating array of particles that play crucial roles in the universe’s structure and behaviour. Among these, mesons stand out as vital yet often overlooked
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When we gaze at the world around us, from the smallest pebble to the largest star, we are witnessing the handiwork of fundamental particles. Among these, baryons play a starring role, forming the very fabric of the universe as we know it. But what exactly are baryons, and why are they so crucial to our
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