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Knight Square

Posers and Puzzles

12 Aug 06

Knight Square

Palmerston North

Joined: 02 Jun 06
Moves: 2420

12 Aug 06

1 edit

I have some questions to ask you guys.

There is a balloon with a radius of 45cm.
There is a pump that fills at a rate of 27.3L/s.
How long will it take to fill up the balloon (answer in min plz)?

For some reason I got around 14 min where did i go wrong?

ThudanBlunder

Joined: 21 Jul 06
Moves: 0

12 Aug 06

Homework?

XanthosNZ

Cancerous Bus Crash

p^2.sin(phi)

Joined: 06 Sep 04
Moves: 25076

12 Aug 06

1 edit

41.9 seconds

Knight Square

Palmerston North

Joined: 02 Jun 06
Moves: 2420

12 Aug 06

Yep

Knight Square

Palmerston North

Joined: 02 Jun 06
Moves: 2420

12 Aug 06

lets try R 45m?

AThousandYoung

Insanity at Masada

tinyurl.com/mw7txe34

Joined: 23 Aug 04
Moves: 26660

12 Aug 06

1 edit

Originally posted by Knight Square
I have some questions to ask you guys.

There is a balloon with a radius of 45cm.
There is a pump that fills at a rate of 27.3L/s.
How long will it take to fill up the balloon (answer in min plz)?

For some reason I got around 14 min where did i go wrong?

Volume of a sphere: (4/3)pi*r^3

You get cm^3 = mL.

Divide the mL by 1000 (or multiply the pump speed by 1000) and the units will match. Now divide the volume by the pump's rate.

You get seconds. Now divide by 60 to get minutes.

Knight Square

Palmerston North

Joined: 02 Jun 06
Moves: 2420

12 Aug 06

Did that,need Answer as well
I dont know if the figure are correct

ThudanBlunder

Joined: 21 Jul 06
Moves: 0

12 Aug 06

Originally posted by Knight Square
Yep

I think that when asking for help with homework you should show some of your own work and point out where you are having difficulty. Being handed the answer on a plate isn't going to help you pass your exams.

XanthosNZ

Cancerous Bus Crash

p^2.sin(phi)

Joined: 06 Sep 04
Moves: 25076

12 Aug 06

Originally posted by ThudanBlunder
I think that when asking for help with homework you should show some of your own work and point out where you are having difficulty. Being handed the answer on a plate isn't going to help you pass your exams.

And he still doesn't know where he went wrong.

Knight Square

Palmerston North

Joined: 02 Jun 06
Moves: 2420

12 Aug 06

Okay here are the real figures.
R 45 cm
pump 27.3/min

4/3*pi*.45^3=0.381703507 (figure in m^3)
coversation to L (from m^3)= 1000*0.381703507
= 381.7035074
rate= 381.7035074/27.3
= 13.98181346min
rounds to about 14 min.
Answer is needed in min anyway.

Am I correct or wrong.

XanthosNZ

Cancerous Bus Crash

p^2.sin(phi)

Joined: 06 Sep 04
Moves: 25076

12 Aug 06

You use an incorrect formula and you can't decide whether your rate is per second or per minute.

Maybe you should leave the number stuff to other people. You are clearly not cutout to do math. Or physics.

Knight Square

Palmerston North

Joined: 02 Jun 06
Moves: 2420

13 Aug 06

1 edit

Noooooooooo. I gave you the wrong info.
its in min not secs OKAY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

What form are you XanthousNZ?

XanthosNZ

Cancerous Bus Crash

p^2.sin(phi)

Joined: 06 Sep 04
Moves: 25076

13 Aug 06

Originally posted by Knight Square
Noooooooooo. I gave you the wrong info.
its in min not secs OKAY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

What form are you XanthousNZ?

Forms are obsolete.

Knight Square

Palmerston North

Joined: 02 Jun 06
Moves: 2420

13 Aug 06

1 edit

Okay then they are then.
Play any other sports? Rugby, Cricket?

EcstremeVenom

Joined: 06 Jul 06
Moves: 2926

13 Aug 06

Originally posted by Knight Square
Okay then they are then.
Play any other sports? Rugby, Cricket?

play any good sports? football? basketball?