# [J1] Lesson 31 (Wave Motion + Techniques of Integration + Alkenes)

[J1 Physics PMCians] Wave Motion & How it’s Linked to SHM

What we did in 2 hours:

This week, we began our exploration of Wave Motion by examining these important aspects:

1) Details about Electromagnetic (EM) waves

2) Difference between Displacement-Distance and Displacement-Time graphs

3) Phase difference vs Path difference

4) Longitudinal Waves, and lastly

5) Intensity of Wave.

Transverse Wave (Difference between Particle Motion & Wave Motion)

Longitudinal Wave (Difference between Particle Motion & Wave Motion)

What you take home:

Wave Motion Daily Dose

The answers and working are at the back:

https://tinyurl.com/yasl759g

Special Mention:

Next lesson we will conclude our understanding for the topic of Wave Motion, by examining a phenomena called Polarization!

Till we meet again, stay safe and healthy!

From you friendly tutors,

Mr Sim & Mr Kwok 🙂

[J1 Maths PMCians]

What we did in 2 hours:

Having picked up all of the Techniques of Integration, we put them into practice over a wide variety of questions. These included all basic formulae, standard forms, integration by substitution and integration by parts.

Keep practising to internalise what we have covered – how to recognise when to use which technique, and the most consistent and efficient ways to apply them.

What you take home:

The Daily Dose and Quiz solutions are linked here:

https://tinyurl.com/y2vsye4w

Special Mention:

We will be moving on to Applications of Integration this week, where we look at areas under graphs and Volumes of Revolution.

See You and Stay Healthy!

[J1 Chemistry PMCians] Completing Alkenes

What we did in 2 hours:

We have completed all reactions of alkenes, namely

1. The four electrophilic addition reactions + their mechanism
2. Characteristic of electrophilic addition mechanism (Markovnikov’s rule & racemic product mixture)
3. Mild and vigorous oxidation of alkenes + their products

What you take home:

The solutions to Everything you need to know series and selected structured questions for Alkenes are found here:

https://tinyurl.com/y4y5yza9

Special Mention:

Next week, we shall review vigorous oxidation of alkenes before moving onto Arenes.

Stay healthy and happy!

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!