## motion graphs explained

In Atal Tinkering Labs ATL, More Info | No commentAn explanation of motion graphs using two simple scenarios – constant velocity and constant acceleration. With the use of pHET animation.

An explanation of motion graphs using two simple scenarios – constant velocity and constant acceleration. With the use of pHET animation.

In this video, I briefly discuss gravitational potential energy (PE = mgh) as assumed knowledge and move not o understanding GPE in the larger scale, as gravity changes. I discuss how the formula comes about and what it look graphically.

How do Newton’s Laws apply to a rocket launch? Using data from a simulation by Robert A. Braeunig, I present graphs of various measurements to explain Newton’s in the context of the multistage rocket Saturn V. In particular I explain how the g forces change for the astronauts as they ascend into orbit. For those doing the NSW HSC, this video address the following dot point (though I do not specifically address LCM) analyse the changing acceleration of a rocket during launch in terms of the: – Law of Conservation of Momentum – forces experienced by astronauts

In this video I discuss the connection between gravity and circular motion, involving satellites. I thus derive the formula used for orbital velocity of a satellite moving in a circular path For those doing the HSC Physics course, this video addresses the following dot points • analyse the forces involved in uniform circular motion for a range of objects, including satellites orbiting the Earth • define the term orbital velocity and the quantitative and qualitative relationship between orbital velocity,the gravitational constant, mass of the central body, mass of the satellite and the radius of the orbit using Kepler’s Law…

Do you know Kepler’s Laws of Planetary Motion? Do you know how they came about? This video covers that, explains how Newton confirmed them and goes through a worked example of applying Kepler’s Third Law

Have you ever wondered why 45° gives you maximum range? Did you know that for every angle of launch there is another angle that gives you the same range. In this video I show how you can prove both mathematically, simply using the equations of motion.

Using a demonstration motor, I explain how a motor works, how a generator work, what their similarities are and what their difference are

In this video I review, with the physics explained, how JJ Thomson discovered the electron I briefly review the history prior and also touch on electric fields, magnetic fields and circular motion and how they all contribute to JJ Thomson’s discovery

In this video I look an application of the motor effect – the galvanometer

So why do current bearing wires attract? Why are their spacer between high voltage power lines? In this video I demonstrate and explain why current bearing wires experience a force between each, all due to the motor effect!.

This video covers eddy currents and Lenz’ Law using the well known demonstration of dropping a rare earth magnet down an aluminium tube.

A short video that explains the physics of a speaker. This video covers the dot point (in the NSW physics syllabus) • identify data sources, gather and process information to qualitatively describe the application of the motor effect in: the loudspeaker

In this video I discuss the nature of back emf and why a motor burns out when it’s suddenly stops

A short overview of Wien’s Law using the animation from pHET

Want to know how a solar cell works. Here is a summary of how a solar cell functions, utilising two key physics concepts – semiconductors and the Photoelectric Effect

This video examines the experiment Hertz performed to validate Maxwell’s prediction for electromagnetic waves. It also touches on his observation of the photoelectric effect. Prepared to help students doing the HSC in Australia, it is suitable in other jurisdictions as well.

Explaining the theory behind black body radiation, the problems it caused in terms of classical theory, and Max Planck’s solution

The 3rd in the series on the photoelectric effect (See my videos on Hertz and Planck) Covers how observations of the photoelectric effect lead to Einstein’s theory in understanding the effect.

What is nuclear fusion and what doe sit generate energy? Where does the energy from the sun come from? This video answers both questions as it reviews how hydrogen fuses to form helium and generate lots of energy.

In this video I review the HR (or Hertzsprung Russell) Diagram. Quickly reviewing the concepts of brightness and colour of a star, I show you how we can classify stars and how that leads to better understanding of the nature of stars.