# [S3] Lesson 24 : Pressure Part 2 + (EM) Trigonometry Part 1 + MYE Revision Part 4 Updates/Debrief

[S3 Physics PMCians]

What we did in 2 hours (PMC LIVE):

On the 11th, 13th and 14th June, the S3PH has come together to cover the following during our weekly zoom lessons:

1) Pressure L2,

2) Test A and

3) 4Q challenge.

Always remember:

1) To solve any question related to Manometer or Barometer,

a. Find the two points of same level and liquid to write as P(A) = P(B),

b. Examine what are pressure exerted downwards onto both points separately, and

c. Equate them to solve.

2) To convert from mmHg or cmHg to Pa, always use the P = hpg formula.

We will continue with Pressure L3 on Hydraulic Press and familiarizing ourselves with more questions practice.

Special Mention:

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

With you, as usual,

The S3PH Tutors

(Mr Shane, Dr Li and Mr Gary)

[S3 Maths PMCians]

What we did in 2 hours (PMC LIVE):

This week, we understand the limitation of TOA-CAH-SOH which can only apply to right-angled triangles. To go beyond this limitation, we learnt a few formulae which can be applied to non-right-angled triangles.

To sum up, we learnt

• Sine rule
• Area of triangle involving sine
• Cosine rule

Special Mention:

In our next lesson, we will have a revision of previous topics. You may want to go through Book 1 and Book 2 again. Some topics are Logarithm Functions, Exponential Functions, Polynomials, Quadratic Functions,

Your friendly PMC S3 Math tutors

[S3 Chemistry PMCians]

What we did in 2 hours (PMC LIVE):

We have completed our MYE revision packages where we acquired more problem-solving techniques on data-based questions. We hope you are now confident to attempt any upcoming quizzes. Text us any questions during your revision and have them clarified as soon as possible.

Take some time to familiarise yourselves with common ions formed by elements in different Groups of the Periodic Table as well as complex ions we have learnt in preparation for our topic on oxidation and reduction.

Special Mention:

Congratulations to our top scorers for MYE Set B!

1st – Joshua Sau, ACSBR

2nd – Isaiah Teo, GMSS

3rd – Cayla Tham, CGS

Here’s a video on reducing and oxidising agents which we will discuss in the upcoming topic of redox:

Stay healthy, stay safe, see you this weekend!

Regards,

Mr Jacob

Home-Based-Learning (HBL)

1) PMC Lecture webcast (www.pmcdigital.sg)