- Joined
- Oct 31, 2010
- Messages
- 10
- Reaction score
- 0
This question appeared in both Kaplan and Gold Standard, but they have contradicting answers...which is right?
Question: A block of ice floats in water. When it melts, what happens to the water level?
Kaplan answer: it will decrease because ice is less dense than water.
Gold Standard answer: it will remain the same because: [FONT=Verdana, Arial, Helvetica, sans-serif][FONT=Verdana, Arial, Helvetica, sans-serif]
Gold Standard also says this:
Question: A block of ice floats in water. When it melts, what happens to the water level?
Kaplan answer: it will decrease because ice is less dense than water.
Gold Standard answer: it will remain the same because: [FONT=Verdana, Arial, Helvetica, sans-serif][FONT=Verdana, Arial, Helvetica, sans-serif]
mg did not change
.[FONT=Verdana, Arial, Helvetica, sans-serif][FONT=Verdana, Arial, Helvetica, sans-serif]The object displaces an amount of water equal to its weight when it is floating. Thus, if the object were to change state, since its mass remains constant, the level of the water would remain constant...
Gold Standard also says this:
So which is right? Kaplan or GS?imagine that you have a bucket of water. Take a styrofoam block and put it in the bucket. Of course, as soon as you put the styrofoam in the bucket, the level of the water will go up commensurate with the weight in volume of water displaced by the styrofoam.
Now take the styrofoam and crush it into a smaller volume and put it back in the bucket. Will the styrofoam push aside any more or less water than before? Of course, because the weight has not changed, the styrofoam has no more force to push aside more or less water. Thus the level of the water does not change.