puff wrote:

lee_yl wrote:

nicnac wrote:Wood, some float and some sink..

Although both are metals, when your hubby gives you a ring, either a gold ring or copper ring, would you think both are the same?

If you love him enough you would think both are the same

lee_yl wrote:

nicnac wrote:Wood, some float and some sink..

Although both are metals, when your hubby gives you a ring, either a gold ring or copper ring, would you think both are the same?

Even if the solid metal ball can float on water due to surface tension and with precise calculations, say diameter must not exceed 2.6cm, then how can balls Y and Z made of the same material and identical, one end up floating and one sinking? This question just wanted to test on the P3 material top...

I am curious why that school teacher and tutor say it’s choice (4). Btw, a sponge soaked with water is call a solid+liquid mixture. And can a solid ball be hollow, strictly speaking, no, else we are just playing with words Thanks for the clarify a soaked sponge ball is not consider a solid. Steel s...

Iluvmygals wrote:The more we discuss about the ball question the more it looked like a PHD entrance exam....not a PSLE.

I am curious why that school teacher and tutor say it’s choice (4). Btw, a sponge soaked with water is call a solid+liquid mixture. And can a solid ball be hollow, strictly speaking, no, else we are just playing with words Thanks for the clarify a soaked sponge ball is not consider a solid. Steel s...

Take time to analyse what does choice (4) mean. If it’s neither A nor B then it means that either “all 3 materials are the same” or “materials X and Y different and materials Y and Z same” I would like to know what materials, when used to fabricate 3 solids (identical in everything), when submerged...

Take time to analyse what does choice (4) mean. If it’s neither A nor B then it means that either “all 3 materials are the same” or “materials X and Y different and materials Y and Z same” I would like to know what materials, when used to fabricate 3 solids (identical in everything), when submerged...

ski wrote:

faithj wrote:I think it is 4.
eg. Y and Z could both be made of wood, but Z could be hollow.

Btw, wood does not sink

Some wood sink eg cocobolo Ebony
There is a youtube video

ski wrote:Should be B Only.

X and Y can be different or same materials e.g. both can be iron or X can be iron and Y is glass. There is no way to ascertain. But Z and Y must be different materials e.g. Z is wood, Y is iron.

Could Z and Y made up of different type of wood?