## Questions for Forces and Dynamics (JC) Set 2

An object of mass 1.5 kg is sliding with a velocity of 3.0 m s-1 on a frictionless surface towards another object which is stationary and has a mass of 2.0 kg. This head-on collision is completely inelastic. If the duration of the collison is 0.050 s, find the average force that is exerted between the objects during the collision. …

## Centre Of Gravity (O Level)

It is useful in certain calculations to consider an imaginary point in a body of matter where, the total mass or weight of the body seems to concentrate at. The imaginary point is termed as the centre of mass. Definition: The centre of mass of a body of matter is an imaginary point at which the entire mass of the body …

## Resistance

By increasing p.d. across the ends of a conductor, current flow can be increased. But the increase in the amount of current flow depends on the conducting ability of the conductor. Some conductors offer some resistance to current flow than others. Resistance (R) of a conductor is defined as the ratio of potential difference (V), across the conductor to the …

## Electromotive Force

Electromotive Force (e.m.f.) of a source is the energy converted from non-electrical to electrical form when one coulomb of positive charge passes through the source. SI unit: Volt (V)   $E = \frac{W}{Q}$, where E = e.m.f., W = work done by source, Q = amount of positive charges   Potential difference between two points is defined as the energy …

## Pressure (O Level)

This topic covers “Pressure” of O Level Physics. (Equivalent to American high school diploma) Sub-Topic: What is Pressure? Hydrostatic Pressure Barometer Manometer Hydraulic System Boyle’s Law Quiz: Click here for Quiz on Pressure

## Propagation Of Light

Propagation of light refers to the manner in which an electromagnetic wave transfer it’s energy from one point to another. Three main processes generally occur when light passes between boundaries from one medium to another:  Transmission  Reflection  Refraction   Propagation of light through vacuum Little or no scattering occurs, hence a beam of light through vacuum will be completely invisible except for …

Categories H3

## Matter Waves

Sub-Topics: Wave And Particle Nature (Under Construction) Wave Function (Under Construction)   Back To H3 Physics

Categories H3