2019 PSLE Discussions and Strategies (Children born in 2007)

[psleisstress]

I think is 45cc cuz air can be compressed

[whitecarrotcake]

psleisstress\" post_id=\"1939001\" time=\"1569910720\" user_id=\"181338:

I think is 45cc cuz air can be compressed

It can be compressed to 30 cc.

[Mommy of 3]

psleisstress\" post_id=\"1939002\" time=\"1569910733\" user_id=\"181338:

I think is 45cc cuz air can be compressed

My dd also say 45 as cannot be air become lesser and air can be compressed.

[Dino]

whitecarrotcake\" post_id=\"1939004\" time=\"1569911039\" user_id=\"114080:

psleisstress\" post_id=\"1939001\" time=\"1569910720\" user_id=\"181338:

I think is 45cc cuz air can be compressed

It can be compressed to 30 cc.

hmmmm so answer is 45 or 30???

[whitecarrotcake]

30 cc. A similar qn came out before.

Air can be compressed while water cannot. Water will be 15cc+5cc=20cc and since the container has a volume of 50cc, air can be compressed to fit 30cc.

[whitecarrotcake]

Compressed means more air taking up less space. Hence 30 cc is the answer.

[tryourbest]

30cc. The volume of air will be the volume of space left inside the container. No matter how much additional air u pump in.

[Kei]

psleisstress\" post_id=\"1939002\" time=\"1569910733\" user_id=\"181338:

I think is 45cc cuz air can be compressed

In a container with a capacity of 50unit, if water (which has a fixed volume, thus cannot be compressed) has occupied 15+5=20unit, remaining space for the air to occupy is 30unit

[Mazda12345]

TGP666\" post_id=\"1938965\" time=\"1569908302\" user_id=\"181285:

helpthismom\" post_id=\"1938955\" time=\"1569907100\" user_id=\"149507:

Logic for Q18 related to ball drop and bounce

https://www.asee.org/documents/conferences/k12/2012/2012K12_Ball_Drop_activity.pdf

So KE transformed to GPE and SE

WHAT THE F :censored: !
2 :censored: ING MARKS GONE?
:censored: ! I GOT SCIENCE SO MUCH WRONG TOOOOOOOO???????????????????????!?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
:censored: :censored: :censored: :censored: :censored: :censored: :censored: :censored: :censored:

Don't cry over spilled milk.Maybe if you do well in higher Chinese, your results will be better!😀At least you tried your best!Last paper already!Lets work hard!😉

[Dino]

whitecarrotcake\" post_id=\"1939008\" time=\"1569911483\" user_id=\"114080:

Compressed means more air taking up less space. Hence 30 cc is the answer.

wow tks. That's my understanding as well.