 # Atal Tinkering Labs ATL

## NSW Physics review – dot points 9.2.4

The fourth in a series of short videos, I review the dot points in the NSW HSC syllabus. I won’t go into the full details of the physics of each point, but I will touch on them discussing the nuances of each dot point.   In this video I discuss section 9.2.4 – Current and emerging understanding about time and space has been dependent upon earlier models of the transmission of light

## NSW Physics review – dot points 9.2.3

The third in a series of short videos, I review the dot points in the NSW HSC syllabus. I won’t go into the full details of the physics of each point, but I will touch on them discussing the nuances of each dot point.   In this video I discuss section 9.2.1 – The Earth has a gravitational field that exerts a force on objects both on it and around it

## NSW Physics review – dot points 9.2.2

The second in a series of short videos, I review the dot points in the NSW HSC syllabus. I won’t go into the full details of the physics of each point, but I will touch on them discussing the nuances of each dot point.   In this video I discuss section 9.2.2 – Many factors have to be taken into account to achieve a successful rocket launch, maintain a stable orbit and return to Earth

## NSW Physics review – dot points 9.2.1

The first in a series of short videos, I review the dot points in the NSW HSC syllabus. I won’t go into the full details of the physics of each point, but I will touch on them discussing the nuances of each dot point.   In this video I discuss section 9.2.1 – The Earth has a gravitational field that exerts a force on objects both on it and around it

## Understanding Voltage and Potential

We hear about voltage, but do you really understand its meaning? This video discusses the concept of potential, more commonly known as voltage, and its connection to energy.

## Optics – real image formation

So we know that lenses can magnify but why does a lens have the ability to display an image? In this video, I discuss why a converging lens can form real images as well as look at the factors that determine its characteristics. Using a clear explanation with animations, I help you understand the optics from a high school perspective

## A better understanding of the 3rd Law

The third law is often described as ‘every action there is an equal but opposite reaction’. I present a better way of stating the 3rd , with lots of examples.

## flux explained

An explanation of flux and how a changing flux leads to an EMF Covers Faraday’s Law too.

## transverse wave explained

A quick explanation of a transverse wave using pHET animation

## interference explained

In this video, I go through wave interference using the excellent animation from pHET. I discuss constructive and destructive interference from a 2D perspective.

## superposition explained

In this video, I go through wave interference / superposition. I discuss constructive and destructive interference from a 1D perspective. For NSW students, it covers the content from the Year 11 World Communities unit (8.2), namely • describe the principle of superposition and compare the resulting waves to the original waves in sound

## electrical circuits explained

In this video I explain a simple, a series, and a parallel circuit in terms of an analogy using a slide. I thereby explain how voltage and current are measured. Suitable for senior classes as well as junior classes of science

## Car Crash Physics

What are the Physics principles involving a car crash? How do forces, work, energy, and momentum apply? In this video I will discuss these terms in a way that will help you understand those concepts in the context of a car crashing in a wall – first at 60kph and then 100kph.

## Understanding Circular Motion

This video presents a beginner’s guide to circular motion, introducing the concept of centripetal force. It also briefly discusses the erroneous term centrifugal force. It also explains the motion with some common examples.   Clarification: in the video I mention that ‘there is no centrifugal force” What I mean is, there is no centrifugal force acting on the object spinning, like some outward force acting on the object. This is fictitious.   I the specific case of a car going around the bend, the centripetal force is provided by the road surface on the car, going inward   One could…

## Understanding vectors

This video address all three questions in a way that helps you understand the importance of vectors in Physics

## The equations of motion

In this short video I run through the 5 equations of motion, used in kinematics, and how they are derived.

## true lies projectile analysis

Using projectile motion, we analyse a scene from James Cameron’s blockbuster, ‘True Lies’, to see if a terrorist can jump from a building to a pool in another building, whilst being chased by Arnie on a horse.

## motion graphs explained

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

## Gravitational potential energy explained

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.

## Rocket Launch Physics Explained

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