# [S3] Lesson 27 : Thermal Physics Part 1 + (EM) Trigonometry Part 2 + Redox Part 3 Updates/Debrief

[S3 Physics PMCians]

What we did in 2 hours:

On the 2nd, 4th and 5th, the S3PH has come together to cover the following during our weekly zoom lessons:

1) Thermal Physics Lesson 1 – Temperature and Thermometer

2) Thermal Physics Quiz A – Temperature and Thermometer

3) Kahoot Quiz – Kinetic Particle Theory and Temperature

Always remember:

1) Thermometric Property – Physical property of a substance that varies continuously with Temperature (i.e.: one physical property value matches with one temperature value)

2) It is only because we are using the calibration setup to do our calculation, then we assumed the thermometric property varies linearly with temperature.

3) The approach we use to solve temperature questions related to Resistance and Length is (a) draw graph; and (b) find gradient

4) As for Thermocouple, we will use (a) E = k  x change in T (where it is always the Hot Junction – Cold Junction) to determine the k; and (b) apply the same formula to solve the question.

We will continue with the Thermal Physics Lesson 2 – Heat Capacity and Latent Heat.

Do remember your calculator as this part of the lesson is more mathematical but fun!

Special Mention:

This week begins a new normal in the Physics Cafe as you guys are given another option to attend our weekly lessons – the Onsite lessons.

It is indeed heartening to see many of you sitting in our Physical Classroom and having very lively discussions with us.

Should you have any questions, please feel free to send in your questions (and attempted workings) to 9100 1235. We will do our utmost to assist you in the questions.

Take care and Always with you,

The S3PH Tutors

(Mr Shane, Dr Li and Mr Gary)

[S3 Maths PMCians]

What we did in 2 hours:

This week, we covered Application of Trigonometry in real life. We talked about the angle of elevation/depression from a point. We also shared the importance of bearing in real life.

We then summarized how we should extract the 3D diagram in a 2D-view before applying the techniques we learnt, namely:

• TOA-CAH-SOH
• Sine rule
• Cosine rule
• Area of triangle, ½ ab sin C

Please try the Takeaway Questions (App of Trigo) as homework before referring to the solutions.

Special Mention:

In the next lesson, we are going to learn about the Properties of Circles. We will learn a few theorems and practise how to spot these theorems in a complicated circle diagram. Note that this is one of the geometry chapters which can be heavily tested in exam. You may want to look through the theorems covered in the book first before attending the class to understand in more details. See you this week!

Your friendly PMC S3 Math tutors

[S3 Chemistry PMCians]

What we did in 2 hours:

We have completed the topic on redox. We have also acquired the most accurate method of identifying oxidation and reduction with oxidation states and attempted top school questions with a quick-fire quiz.

You are now able to complete the entire Take Home Package. Do attempt the questions and have questions answered any time.

Special Mention:

We will be kickstarting our lesson on the Periodic Table where we learn about trends of elements across the Period and down their Groups. Here’s an infographic:

Stay healthy, stay safe, see you this weekend!

Regards,

Mr Jacob