Term 2 Week 7 2019

Homework:

• Ex 2A, p.19-22 Error Measurement
• Ex 2B, p.26-37 Graphs and Errors
• Ex 2C, p.37-45 Sample Phy 3.1 Assessments

Lab Assessment Phy 3.1 next week

Using Sheets to Construct Graphs

Term 2 Week 5 2019

Homework:

• 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, Circular Motion & Gravity
• Ex 4H, p.160-162, Rotational Kinematics

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 Kinematic Equations

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

Test

Term 2 Week 4 2019

Homework:

• 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, Circular Motion & Gravity

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

Term 2 Week 3 2019

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
• Ex 4D, p.128-131, Banked Corners (Circular Motion)
• Ex 4E, p. 138-142, Vertical Circles

Vertical Circular Loop Model - app

Vertical Circular Motion

    

Vertical Circular Motion

Walter Lewin Vertical Circular Motion

Term 2 Week 2 2019

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
• Ex 4D, p.128-131, Banked Corners (Circular Motion)

Banked Corners

Circular Motion - Banked Curves

Car on a Banked Corner

Free body diagram sine and cosine components

Term 2 Week 1 2019

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

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?

Term 1 Week7 2019

Phy 3.7 Nuclear Debate

Thursday 11th April

Renewable Energy and Electricity
World Nuclear Association 2019

• There is widespread popular support for using renewable energy, particularly solar and wind energy, which provide electricity without giving rise to any carbon dioxide emissions.
• Harnessing these for electricity depends on the cost and efficiency of the technology, which is constantly improving, thus reducing costs per peak kilowatt, and per kWh.
• Utilising electricity from solar and wind in a grid becomes problematical at high levels for complex but now well-demonstrated reasons. Supply does not correspond with demand.
• Back-up generating capacity is required due to the intermittent nature of solar and wind. System costs escalate with increasing proportion of variable renewables.
• Policy settings to support renewables are generally required to confer priority in grid systems and also subsidise them, and some 50 countries have these provisions.
• Utilising solar and wind-generated electricity in a stand-alone system requires corresponding battery or other storage capacity.
• The possibility of large-scale use of hydrogen in the future as a transport fuel increases the potential for both renewables and base-load electricity supply.

Debate: Is Nuclear Power the Answer to Climate Change?

On May 3, 2016, renewable energy expert Professor Daniel Kammen of the University of California Berkeley debated nuclear power advocate Lauri Muranen, executive director of the World Energy Council, Finland, on the question: "Is nuclear power the answer to climate change?" The event, part of the Einaudi Center's annual Lund Critical Debate Series, was moderated by Cornell law and anthropology professor Annelise Riles.

Understanding the accident of Fukushima Daiichi

88,000 tons of radioactive waste – and nowhere to put it

The Eyes of Nye S01 E05 Nuclear Energy

Is Nuclear Power Good Or Bad?

How fear of nuclear power is hurting the environment