fbpx

[J1] Lesson 44 (COE Headstart L3+ (Headstart) Probability L2+ (Headstart) Acid Base Equilibrium L3)

[J1 Physics PMCians] Headstart : Current of Electricity & DC Circuits (Part 3)

 

What we did in 2 hours:

This week, we concluded our headstart program on DC Circuits.
We examined how to calculate the power of a resistor and laid the foundation on how to analyse the power of a resistor, depending on how the resistors are connected.

What you take home:

Current of Electricity (Daily Dose) and DC Circuits (Daily Dose)
Please download and try the questions as practice.

Special Mention:

Next lesson, we begin our Headstart program on Electric Field.
Till then, stay healthy and safe!
From your friendly tutors, 
Mr Sim & Mr Kwok 🙂

[J1 Maths PMCians] 

 

What we did in 2 hours:

We carried on with Probability, dealing with some new concepts – Conditional Probability and Independent events. Recall the two ways to handle conditional probability; either by reducing the sample space, or by applying the formula – intercept over condition!

We also looked at how to identify independent events and manage questions involving a range of probabilities. These can be tougher to manage, which is why our headstart will give us sufficient preparation as we handle this and other statistics chapters in JC2.

What you take home:

Worked solutions for the remaining questions in Probability as well as the daily dose solutions have been uploaded here.
RI students doing Integration Headstart, please use this link:

Special Mention:

Moving on, we will start with the final component of Calculus, Differential Equations.
See You and Stay Healthy!
Your Friendly Math Tutors

[J1 Chemistry PMCians]

 

What we did in 2 hours:

We have revised the various formulas to calculate the pH of a strong and weak acid/base by looking at prelim grade questions. We discussed why salts are not necessarily neutral and went on to see how to calculate their pH. After which, buffer solutions which resist pH changes when a small amount of acid or base is added was discussed qualitatively and quantitatively.

Special Mention:

This week, we will consolidate all the pH formulas we have learnt for the 4 different systems (strong, weak reagent, salt hydrolysis and buffer) in titration curves.
See you in class!
Mr Leong