# [J1] Lesson 46 (Headstart Electric Field Part 2 + Headstart Differential Equations Part 2 + Headstart Acid Base Equilibrium Part 5)

[J1 Physics PMCians]

What we did in 2 hours:

This week, we concluded our head-start program with part 2 of Electric Field.

We reviewed the differences between the electric field created by a point charge (Non-uniform field) vs a Uniform field created by 2 charged parallel plates. Also the usefulness of the concept of Potential gradient as the Electric field strength was discussed and used.

Take Away:

1) 8Q Quiz 1 & 2 (solutions).  For reference only.

2) Electric Field (Daily Dose)

https://tinyurl.com/y29cqsyq

Special Mention:

This concludes our J1PH lessons for 2020!

What an eventful, yet fruitful year it has been. Please do get your much needed rest and break before starting J2.

Till we meet again, stay strong and healthy!

Signing out for 2020 J1PH,

Mr Sim & Mr Kwok 🙂

[J1 Maths PMCians]

What we did in 2 hours:

Finishing up our Headstart is the final part of Differential Equations. We apply our DE Techniques on application questions, which have specific steps – forming the DE, solving the DE and interpreting limits.

Recall the keywords used to setup the DE – rates are usually required, and a direct or indirect proportion. Subsequently, where possible, find the particular solution, and do note how we use limits to make simple contextual deductions.

Of course, managing the very specific types of DE equations, especially the Logistics equation, is extremely helpful. As we practiced, make it a point to prioritise positive quadratics and always be able to present the arbitrary constant neatly (the ‘A’).

What you take home:

Worked solutions for the Try-It questions are uploaded here.

https://tinyurl.com/y52zoafe

https://tinyurl.com/y5unmzu8

What you take home:

Congratulations on finishing our J1 programme! Enjoy the break! Those of you joining our Part 2 Revision course, do check the schedule and see you then. For the rest, we will start Term 1 of J2 Math on the week of 7th December.

See You and Stay Healthy!