Prefixes are used to simplify the writing of very big or very small numbers. For instance, instead of having to write 12 500 000 m every...

When gas in piston and heated but pressure remains constant. It is easier to explain in terms of the average force acting on a unit area....

When a system is in equilibrium , 2 conditions are met. 1) Principle of Moment (POM): Sum of anticlockwise moment = Sum of clockwise...

Solutions: a) Refraction     b) 48.6o     c) c = 41.8o     e) 70o d) Total internal reflection has occured, as the angle of incidence is...

A common mistake is to state that the reason for switch to be on the live wire is “so that the switch can turn on/off the appliance”....

1. Converging lens (convex lens) Converging lens, also known as convex lens,  is thicker at the centre. Below shows some examples. In...

Drawing ray diagrams for converging lens come in many forms. But the basic concepts needed are the 3 rays (which have rules to follow) to...

The distance-time (displacement-time) graph on the left is not related to the speed-time (velocity-time) graph. Both are of difference...

01 The various physical quantities in kinematic Video tutorial 02: Acceleration Video tutorial 03: Graphical Analysis of Motion...

For resistors connected in series, the total resistance is the sum of all resistance. Re = R1 + R2 + R3 For resistors in parallel, the...

Simply put, electric appliance can be very simple with just a live wire bring in the current and a neutral wire to bring the current out....

Vernier caliper and micrometer screw gauge are used to measure length. Vernier caliper is used in general for measuring length...

Solutions: (a) (i) A bigger force than F can be obtained due to the lever system and hydraulic system . Lever system: Applying...