Monday, 5 June 2023

Week 6 Term 2 2023

Homework:

Ex 4A, p.100-102, C.O.M.
Ex 4B, p.108-112, Momentum & C.O.M. in 1D
Ex 4C, p.116-122, Momentum & C.O.M. in 2D
Act 7A, p.87-88 Motion, Force and Energy
Act 7B, p.91-92 Impulse
Act 7C, p.95-96 Conservation of Momentum
Act 7D, p.100-101 C.O.M.
Act 8A, p.120-121 Horizontal Circles and Banked Corners
Act 8B, p.124-125 Vertical Circles
Act 8C, p.129 Sattelites
Ex 4D, p.128-131, Banked Corners (Circular Motion)
Ex 4E, p.138-142, Vertical Circles
Ex 4F, p.145-147, Gravity
Ex 4G, p.153-156 Satallites
Act 9A, p. 128-129, Angular Motion
Act 9B, p. 133-135, Torque - Angular Force
Act 9C, p. 128-129, Angular Momentum
Ex 4H, p.160-162, Rotational Kinematics
Ex 4I, P.167-171, Rotational Force & Momentum
Ex 4J, p.175-177, Rotational Kinetic Energy

Radians

Radian Measure is used so that we can easily calculate an arc length, d (m), given an angle, 𝛉 (Rad) and the radius, r (m).

d = r𝛉

This in turn allows us to relate velocity, v (ms-1) to angular velocity ⍵ (rads-1), in the same way.

v = r⍵,

also ⍵ = 2𝝅f

This also allows us to relate acceleration, a (ms-2), to angular acceleration, α (rads-2), in the same way.

a = rα

The rotational kinematics work just like the translational kinematic equations when there is a constant acceleration.

Rotational Kinematics Review

Rotational Kinematics

Rotational Kinematics Physics: Problems, Basic Introduction, Equations & Formulas

Rotational Motion Physics, Basic Rotational Motion Physics: Introduction,

Angular Velocity & Tangential Acceleration

Rotational Inertia

Torque

Angular Momentum

Angular Momentum - Sixty Symbols

Gyroscopic Precession

Slow Motion Flipping Cat Physics

Counter Steering Physics

The Bizarre Behavior of Rotating Bodies, Explained

Ellipzoids and the Bizarre Behavior of Rotating Bodies

Sunday, 14 May 2023

Week 3 Term 2 2023

Homework:

Ex 4A, p.100-102, C.O.M.
Ex 4B, p.108-112, Momentum & C.O.M. in 1D
Ex 4C, p.116-122, Momentum & C.O.M. in 2D
Act 7A, p.87-88 Motion, Force and Energy
Act 7B, p.91-92 Impulse
Act 7C, p.95-96 Conservation of Momentum
Act 7D, p.100-101 C.O.M.
Act 8A, p.120-121 Horizontal Circles and Banked Corners
Act 8B, p.124-125 Vertical Circles
Act 8C, p.129 Sattelites
Ex 4D, p.128-131, Banked Corners (Circular Motion)
Ex 4E, p.138-142, Vertical Circles
Ex 4F, p.145-147, Gravity
Ex 4G, p.153-156 Satallites

Banked Corners

Circular Motion - Banked Curves

Car on a Banked Corner

Free body diagram sine and cosine components

Vertical Circular Loop Model - app

Vertical Circular Motion

Walter Lewin Vertical Circular Motion

PhET - Gravity Force Lab

PhET - Gravity & Orbits

Gravitation: The Four Fundamental Forces of Physics

Introduction to Newton's law of gravitation | Physics | Khan Academy

Speed of a Satellite in Circular Orbit, Orbital Velocity, Period, Centripetal Force

Gravity Visualised

How Do Satellites Get & Stay in Orbit?

Kepler’s First Law of Motion - Elliptical Orbits

Kepler’s Second Law of Motion - Equal Area Equal Time Law

Kepler's Third Law of Motion - T2 ∝ R3

Monday, 1 May 2023

Week 2 Term 2 2023

Homework:

Ex 4A, p.100-102, C.O.M.
Ex 4B, p.108-112, Momentum & C.O.M. in 1D
Ex 4C, p.116-122, Momentum & C.O.M. in 2D
Act 7A, p.87-88 Motion, Force and Energy
Act 7B, p.91-92 Impulse
Act 7C, p.95-96 Conservation of Momentum
Act 7D, p.100-101 C.O.M.

Centre of Mass (C.O.M.)

Center of Mass - Science Theater 29

Center of Mass

PhET - Collision Lab - Momentum & C.O.M.

Centre of Mass + Momentum

Collision and C.O.M.

Momentum Collision in 2 Dimensions

Momentum in 2D Explained Graphically

How Hard Can You Hit a Golf Ball?

Tuesday, 21 March 2023

Week 8 Term 1 2023

Lesics Electronics Enginering Videos

Transistors, How do they work?

MOSFET

Inverter DC --> AC

Thyristor

Tuesday, 21 February 2023

Week 4 Term 1 2023

Homework:

Act 11A, p.176 Waves & Photons
Act 11B, p.179 Photoelectric Effect
Ex 5B, p.205-208 Photoelectric Effect
Ex 5C, p.212-215 Photoelectric Effect
Act 11C, p.183 Atomic Line Spectra
Act 11D, p.188-189 Bohr Model of Hydrogen Atom
Ex 5D, p.221-222 Atomic Models
Ex 5E, p.228-230 Atomic Line Spectra
Act 12A p.207-208 E=mc^2
Act 12B p.213-214 Nuclear Reactions
Ex 5F p.234-236 E=mc^2
Ex 5G p.242-246 Nuclear Reactions

When is now Relativity and Neurology

Nuclear Fission

Nuclear Fission; splitting the atom for beginners

Nuclear Physics: Crash Course Physics #45

Nuclear Chemistry: Crash Course Chemistry #38

Nuclear Chemistry Part 2: Fusion and Fission - Crash Course Chemistry #39

Nuclear Fission

The breaking up of a larger nucleus into smaller nuclei
The decrease in mass per nucleon, matches the increase in binding energu per nucleon
This binding energy per nucleon is a negative energy and represents energy that is lost (radiated away) during the reaction.
Binding energy per nucleon also represents the energy that would need to be added to liberate a nucleon from the nucleus

Nuclear Fission

Fission & Fusion

Nuclear Fusion

The joining of smaller nuclei into a larger nucleus
The decrease in mass per nucleon, matches the increase in binding energu per nucleon
This binding energy per nucleon is a negative energy and represents energy that is lost (radiated away) during the reaction.
Binding energy per nucleon also represents the energy that would need to be added to liberate a nucleon from the nucleus

Nuclear Fusion

Fusion Energy

Binding Energy per Nucleon

Nuclear Reaction E = mc²

Binding Energy per Nucleon

Binding Energy per Nucleon is a negative energy or a debt of energy. This is the amount of energy it would take to liberate a nucleon from the nucleus. This energy was originally radiated off when the nucleus formed.

The energy radiated off, the Binding energy, is lost energy and comes from mass that is lost by the nucleons. Mass per Nucleon shows what is left over once a bound nucleon has radiated away some of its mass.

Mass per Nucleon

Fission:The breaking up of a larger nucleus into smaller daughter nuclei. Anything above Iron will radiate off energy.

Fusion:
The joining of smaller nuclei into a larger nucleus. Anything below Iron will radiate off energy.

Fission & Fusion