math question

[paul_376]

A teacher performing a demonstration finds that a piece of cork displaces 23.1ml of water. The piece of cork has a mass of 5.7g . What is the density of the cork?

[90GT50]

Cork soaker.

[Ruffdaddy]

Density = mass/volume = 23.1/5.7

I can't believe this question is being asked...

[TENGRAM]

Density = mass/volume = 5.7/23.1 g/ml (or, g/cc... g/cm^3)

I can't believe this question is being asked...

fixed..

[Ruffdaddy]

fixed..

Sure...

[71chevellejohn]

42

[stevo]

Snake, Texas Rat, of the cropped ears variety.

Stevo

[majorownage]

This problem doesn't sense.

When you say "displaces," you usually mean the cork is floating, not that the cork completely submerged. I ask because usually a ship displacement is how much volume of water the ship "displaces." However, its overall volume is not known.

1 cc of water is~ 1 gram, so a 5.7g cork cannot displace 23.1ml of water.

QED

This statement is false.

lol

[TENGRAM]

This problem doesn't sense.

When you say "displaces," you usually mean the cork is floating, not that the cork completely submerged. I ask because usually a ship displacement is how much volume of water the ship "displaces." However, its overall volume is not known.

1 cc of water is~ 1 gram, so a 5.7g cork cannot displace 23.1ml of water.

QED

This statement is false.

lol

I interpreted the "displaces" part as if the cork were fully submerged when the displacement was measured since there are no dimensions given for the cork. Cork is less dense than water so it can displace that much water IF an outside force pushes it down in the water.

[idrivea4banger]

Use pesos

[Nash B.]

Density = mass/volume = 23.1/5.7

I can't believe this question is being asked...

LOL!

This problem doesn't sense.

When you say "displaces," you usually mean the cork is floating, not that the cork completely submerged. I ask because usually a ship displacement is how much volume of water the ship "displaces." However, its overall volume is not known.

1 cc of water is~ 1 gram, so a 5.7g cork cannot displace 23.1ml of water.

QED

This statement is false.

lol

Think smarter, not harder.

[Ruffdaddy]

This problem doesn't sense.

When you say "displaces," you usually mean the cork is floating, not that the cork completely submerged. I ask because usually a ship displacement is how much volume of water the ship "displaces." However, its overall volume is not known.

1 cc of water is~ 1 gram, so a 5.7g cork cannot displace 23.1ml of water.

QED

This statement is false.

lol

You are very very confused my friend. In this context it is displacement in a measuring device such as a graduated cylinder when submerged. By your logic everything in the entire world would have the same density.

The method mentioned is a common practice for measuring the volume of complex shapes. You're just thinking with a 1 track mind relative to what you're used to.

Think of it this way, if you were to force that ship completely under water, you could then determine the volume of the ship based on water displacement. Then you use the mass of the ship in determining average density

[mustangguy289]

Will it take off?

[Ruffdaddy]

Will it take off?

That's strictly a function of the viscosity of the water.

[mustangguy289]

That's strictly a function of the viscosity of the water.

Is it one of those swim in place pools?