Tag: A-level

Physics

Simple harmonic motion is closely related to a uniform circular motion. A real life simple harmonic motion. Review Question 1 Answer the following questions as you watch the first YouTube video(Simple…

Physics

Angular Displacement The angle which an object moves around a circle is called the angular displacement. This angle is usually expressed in radians. Hence, there are radians in one complete…

Physics

How does a capacitor work? When a capacitor is connected across a power source, it starts charging up as current flows in the circuit.   Initially when the capacitor has…

Physics

What is a capacitor?   A capacitor is an electrical component that stores charge. It is usually made by having two parallel plates thinly separated by an insulating material. This…

Physics

Why does a orbiting satellite not fall to the Earth? A common misconception among students is that orbiting satellites do not experience gravity. It is argued that since these satellites…

Physics

Physics

Physics

Capacitor is an electrical component that stores charge. As charges are stored, potential energy in the capacitor also increases. In this post, I would like to explain how to calculate…

Answer Physics

The table provides the data for the acoustic impedance and absorption coefficients for muscle and bone. A parallel beam of ultrasound of intensity  enters the muscle of thickness 3.0 cm…

Physics