To get a sharp image on the screen, there are various methods and concepts that you have learned and can be applied here. View the video for the explanation:

The diagram of circuit breaker may vary. So it is important that you analyse the structure of the circuit breaker in the diagram to understand how it works. The following are two examples of circuit breaker where the structures are different, but the basic working principles are the same. Video explanation part 01: 2022PPp2q10 2022PPp2q10 Suggested answers: Video explanation part 02: 2024PPp2q11 2024PPp2q11 Suggested answers:

There is a related question in Pure Physics 2021 P2 Q9, but slightly different. It asked about why home circuit of 230V is not suitable to power a fast charger like those big size DC charger we see in industrial or shopping malls carpark.

Refer to the video below for the explanation. Related post: Velocity-time graph of ball released from rest with air resistance - Part 1 https://youtu.be/ccWnKbjkezc https://youtu.be/clD1b1i7yX0 https://youtu.be/en2RM_Z14AU https://youtu.be/JuK9pHHa-kk

Refer to the video below for explanation. When a ball dropped and then it re-bounces, the motion varies. This video will cover how the various graphs are sketched and why. In this ideal situation, you ignore air resistance and assume no energy converted to other forms as the ball hits the floor. View the two related videos below https://youtu.be/clD1b1i7yX0 https://youtu.be/en2RM_Z14AU https://youtu.be/JuK9pHHa-kk

Refer to the video below for the explanation. When a ball is dropped and it rebounces back, the motion varies. This video will cover how the various graphs are sketched and why when in reality, there is energy lost and the ball not be able to reach the original release hieght. View these related two videos below. https://youtu.be/clD1b1i7yX0 https://youtu.be/en2RM_Z14AU https://youtu.be/JuK9pHHa-kk

Refer to the video for the explanation. When a ball is thrown up and it comes down, the motion varies. This video will cover how the various graphs are sketched and why. View the two related videos below https://youtu.be/clD1b1i7yX0 https://youtu.be/en2RM_Z14AU https://youtu.be/JuK9pHHa-kk

Refer to the video below to understand how to sketch the graph. For O-Level, we just need to focus on the general shape. 2024PP Paper 2 Q1 Related video https://youtu.be/IyCRlUv4A4A https://youtu.be/clD1b1i7yX0 https://youtu.be/en2RM_Z14AU https://youtu.be/JuK9pHHa-kk

For such questions, it is useful to understand conservation of energy. Work done by the pushing force = GPE + KE + work done against friction Answer: (a) 8.0J (b) 200 J (c) 464 J (d) 0.18 m/s2

Answer: Option A

Liquid pressure P = pgh P is pressure in pascal (Pa) p is the density of the liquid (kg/m3) g is gravitational field strength (10 N/kg) h is the height of the liquid (m) Answer: Option B Refer to the video explanation

C is the heat capacity of a body. It is the amount of internal energy transferred to a body per unit change in temperature. (Or for 1 degree Celcius change in temperature). SI unit : J/oC c is the specific heat capacity of a material. It is the amount of internal energy transferred to a unit mass of the material per unit change in temperature. SI unit: J/kg.oC The relationship between C and c is: C = mc where m is the mass of the substance Answer: Option C