Recent content by phy1210

@Borek - I was hoping for some mnemonic to memorize these colours @epenguin - I have an Alternative to Practical Examination which encourages the chem teachers not to do practical. That's the problem! @AGNuke - I was told that we would be asked colours of basic elements. So, Thanks!

That would be difficult to use. I only have a periodic table for exams!

I know that CuSO4 is blue or PbI is yellow. Is there any way to remember the colour of all chemicals?

Yes of course! Not related to homework. I don't know how it functions in practical. Can you predict the direction of the deflection?

In which direction will the pointer move when current is passed? ------->-------(|)--------->---------- [Galvanometer] Does it move to the right? AND There is another one that is connected from top to bottom: | | ^ | | | (|) [Galvanometer] | | | ^ | | | Where will the (|) move?

I think I got it now. Thanks for your help, tiny-tim and nugatory.

Pfff... I am not being able to convey what I don't understand! If there was no water in the bottle. Air molecules would collide at the same rate everywhere inside the bottle. If we take the cap: Area is small Force is the same Hence, Pressure is high If we take the base of the bottle: Area...

Pressure=Force/Area If the force is the same and area is smaller, the pressure will be higher and vice versa. I understand this part! Lets take a water bottle. Pressure on the wall of the bottle and on the cap is the same despite different surface areas?

Thanks tiny-tim! I forgot to mention that they are identical tiles. We can deduce that they have the same forces. But how can the pressure be different then? They have the same pressure acting per unit area, isn't?

Pressure is defined as the force acting per unit area. If we take a hydraulic system of a car, the pressure that will be acting on both piston will be the same. If we apply a small force on the pedal, it will result in a bigger force on the brakes. Here is a multiple choice question that is...