# [J2] Lesson 34 (Wave Grade A Questions + Normal + Sampling Distribution + Electrochemistry)

[J2 Physics PMCians] Waves & Superposition (Grade A) – Part 1

What we did in 2 hours:

This week, we reviewed the entire Waves & Superposition Section.

We used the best questions to highlight what you need to know about this topic at a deeper level.

Interference of 2 Waves

What you take home:

Wave Grade A Test 2 (solutions)

https://tinyurl.com/y2r7vkfa

Extra Practice Questions for Waves & Superposition  (Past Prelim)

https://tinyurl.com/y3wacqhc

Special Mention:

In our next lesson, we give you more opportunity to try out Structured Questions on the same topic.

Till we meet again, have a safe and memorable week ahead!

From you friendly tutors,

Mr Sim & Mr Kwok 🙂

[J2 Maths PMCians]

What we did in 2 hours:

We finished our revision on Normal Distributions and Sample Mean Distributions. We applied our Normal Distributions techniques including direct probabilities and inverse-normal operations (do note how left-tailed or right-tailed GC operations affect inequalities!). Also, we applied linear combinations to situations involving multiple normal distributions.

On the Sample Mean Distribution side, we noted that presentation is key (approximately normal)! Otherwise, it would largely be another Normal Distribution question. Additionally, always be ready to identify the Expectation and Variance of any context, be it from a binomial distribution or a discrete random variable setup.

What you take home:

Worked solutions Daily Dose is linked here:

https://tinyurl.com/yxuxer9w

Weekly Quiz: Quiz G and Solutions for Quiz F have been updated into the link.

https://tinyurl.com/yxsw7usj

Special Mention:

Hypothesis Testing revision this week, dont forget the GCs!

See You and Stay Healthy!

[J2 Chemistry PMCians]

What we did in 2 hours:

In this lesson, we revised Electrochemical Cells – how to determine key features like determining reduction and oxidation of half-cells, Ecell values, electron flow and how changes in concentration affects its Ecell. We also distinguished our approaches between an electrochemical cell and a typical redox reaction. We then discussed Electrolytic Cells, specifically on the discharge on ions.

What you take home:

The solutions to the Homework of Solubility Equilibrium are found here:

Special Mention:

Next lesson, we will continue with our revision on Electrolytic Cells.

See you in class!

Mr Leong

REDEEM A FREE TICKET FOR YOUR FRIEND 🙂

We are pleased to inform you that you will be able to redeem a free ticket for your friend to attend lesson with you. You may redeem this ticket via your Student Portal, under Referral and Rewards.

Take note:

• This ticket can only be redeemed once.
• The guest must attend lesson either onsite or online with you at the same timeslot.
• Free ticket only applies to non-PMC students who have never attended any PMC lessons before.
• Redemption period strictly before 31 August 2020. See you!