MY TEACHING PHILOSOPHY Teacher is one noble profession. Teachers basically do the same job as medical doctor that is TREATING. While doctors treat patients of various illnesses and complications, teachers treat students’ misconceptions during learning. Both teacher and doctor are helping us in improving the education and health quality of our society. These two are the main aspects that needed to be taken care of for all countries. In order to be someone who are able to treat and help other people, teachers themselves have to be strong and passionate towards their profession and also towards their students. For me, to be a teacher, it must start from the beginning which means to produce excellent students, the education background of the teacher her/himself must be excellent in terms of the achievement. I always believe that only teachers with remarkable learning experience will try hard to make their students work to the very least like her/him. To achieve what I’m h...
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Capacitors Capacito r is a device that is normally used in electrical appliances such as radios, computers and TV. There are many different types(looks) of capacitors as shown below: The function of the capacitor is to store electrical charges. Remember , we have 2 types of charges ( positive and negative). Once the capacitor has stored the charge, it can release electrical energy. I give you an example: The flash unit of camera also uses a capacitor. The fact that the camera can give out the flash, it is actually releasing the energy from the charge that is stored in the capacitor. When we measure something , it must has its own quantity and unit. For example, (i) the length (quantity) of a ruler --> the unit is metre (ii) the mass (quantity) of a ball --> the unit is kg Same goes to the capacitor, the quantity measured by the capacitor is capacitance and its unit is Farad. Scientifically, the meaning of capacitance is the ratio ...
Electric Potential, V If Ali wants to move his charge towards the charged sphere on the left, he has to push against the repulsive force between the two spheres (because both are positively charged) Ali is actually doing work (when he push) , Remember W= f.s ! At the same time, Ali's charge gains electric potential energy . If Ali let go his charge, it will move away from the sphere, it looses electric potential energy. The electric potential at a point is telling us the potential energy of each coulomb of charge . When you move a charge in an electric field its potential energy changes. This is analogous to moving a mass in a gravitational field. Electric potential is a scalar quantity. Thank you, Mdm Ummi Atiah KMPk ~ May it Benefits You ➽💕
Coulomb's Law The ancient Greeks found that a piece of amber, when rubbed became electrified and attracted pieces of straw or feathers. In 1785, Charles Coulomb describes experiments that confirmed the inverse-square force law of electricity. Coulomb's law is the fundamental law of force. Coulomb's law discusses the force between two stationary charged particles. STATIONARY, please bear in your mind! (we'll learn a different concept for the MOVING charges) Knowing that, there are two type of charges: that are positive a nd negative charges. The Coulomb force can be attractive and/or repulsive where it depends on the types of charges interacted. Like charges repel one another Opposite charges attract one another Let's understand this example of experiment, an inflated balloon is rubbed with wool . The balloon will then stick to the wall of a room, often for hours (on a dry day). Rubbing the balloon with the wool is equivalent to taking off the neg...
Heat Conduction From the wordweb dictionary, the word ‘conduct’ means guide, lead, impart. So here, we will be talking about how the heat is conducted. Heat conduction only occurs when there is a difference in temperature at two parts of a body or between 2 or more bodies. It is a process of energy transfer between the atoms/molecules in the body. You may also relate this concept with the term ‘conductor’ that we’ve always used to it. Particles vibration in hot and cold region The process of heat conduction is all about the particles (atoms /molecules) movement . I n a hot substance, the particles move faster as they have more energy compared to the particles in a cooler substance. The more energetic particles transfer their energy to the slower neighboring particles. This transfer of energy is heat conduction. This phenomenon can bee seen from the figure above. The heat transfer has its own rate (how fast it is transferred), dQ...
Mechanical Waves Mechanical waves is the waves that require a medium in order to transport their energy from one location to another. The medium could be air/ solid/liquid. When we talk about waves, we'll actually discuss on 2 things. The first one is the wave itself, and the second one is the particles that move/vibrate because of the existence of the wave. The equation of wave is represented by y ( x , t ) = A sin ( w t ± kx ) and if you could recall Simple Harmonic Motion, its equation is x ( t ) = A sin ( w t ) where both are having the same pattern of equation, however there is an additional term in wave equation that is ± kx. So for your information, + kx is telling us that the wave propagates to the right while - kx i s for the leftward wave motion . w is the angular velocity of the vi...
Simple Harmonic Motion Simple harmonic motion (SHM) is a special motion that is periodic motion. The word 'Motion' refers to an oscillation, back & forth motion, right and left, up and down, provided the motion is repeating. Periodic motion means all oscillations are having the same period. Even as the oscillation dies away, its period, T stays the same. Period here means the time taken for one oscillation. As long as the period is constant, we can still call it SHM. SHM is a special type of motion as it obeys the 'time keeping' as explained above. In our real world, all oscillations will be damped (by friction/energy lost) and as the period can't anymore be kept, it is no more SHM. Typical Example of SHM: 1) Swinging Pendulum 2) Spring-attached-box ...