Recent content by Nguyen Quang

I agree with you on the part where KE+work done against =mgh. I did not disagree with it. It adheres to the principle of Conservation of Energy. I will get this straight. The Normal force and friction force are different in both cases. The work done against friction is also different in both...

You are contradicting yourself. As you have assumed, the frictional force is the same in both cases. As a result, the work done in B would be more than the work done in A because the distance covered by a 'body' sliding down slope A would be less than B, hence, less work is done against friction...

Firstly, inertia will not push anything forward or in anyway. You must understand that inertia is the 'reluctance of an object to change in its state of motion or rest' which is derived from Newton's First Law of Motion. To visit the problem of the Firetruck, you must look at it at many...

Ns can be used for common calculation but kgm/s is more accurate and systematic. You should always use kgm/s

The boiling point of Zinc Oxide is 2360 degree C. At this temperature, the ionic structure is completely destroyed, Zinc and Oxygen ions will escape. With this, the Zinc and Oxygen can be said to have been 'split'. Well, through my research, there is no specific calculated values for heat of...

1) Chlorine actually will react with according to the equation: Cl2 + H2O → HCl + HClO This is a disproportionation reaction whereby Chlorine is both oxidised ( 0 in Cl2 to 1- in HCl) and reduced ( 0 in Cl2 to 1+ in HClO). This is rather a reaction than ordinary hydration. Thus, this happens...

Yes, definitely. When the substance is heated up such high temperature, they already gain a substantial amount of energy from the the heating process. The energy is used to overcome the electrostatic force of attraction between the Zinc ions and Oxygen ions. If you are comparing between the...

These 'triangles' are the way of representing a 3-D structure. A full wedge represents an atom that is coming out of the plane (or closer towards you) while a dotted wedge represents an atom that is behind the plane (or further away from you). By representing like this, we can see a 3-D...