Question

ill give you a medal if you can help me :)
Suppose you throw a cube-shaped object and a spherical-shaped object of equal volume in the same volume of water. The ball sinks and the cube floats. Which explains why this might be?


The objects probably have different surface areas.



The objects probably have different densities.



In general, cubes float better than spheres because they are flatter.

Answer 1

@SeaTurtle113

Answer 2

B
They have different densities.

Surface area does not matter, imagine putting a star shaped object in the bucket of the same material. It will sink too.

Flatter surfaces could have higher buoyant force, but the cube will move around and not stay stable.

Answer 3

If the weight of an object is greater than the weight of the water that it displaces, which is true?



The object will float because the gravitational force is greater than the buoyant force.



The object will sink because the gravitational force is greater than the buoyant force.



The object will float because the buoyant force is greater than the gravitational force.

Answer 4

SInk

Answer 5

It will sink, because it has a greater density (the same volume weighing more)

Answer 6

can you help me with one more? if so its...VVV

Answer 7

Suppose you are testing the buoyancy of different objects. Study the table and choose the object with the greatest buoyant force.


Object
Amount of Water Displaced by the Object (in ml)

1 5.4
2 6.7
3 7.8



a.1

b. 2

c. 3

Answer 8

The buoyant force is directly proportional to the amount of water displaced, thus the correct answer is number 3, because it displaces the most water.

This does not mean however that it is the most buoyant or that it is the lightest or less dense etc. All this means is that the buoyant force exerted by the water is the greatest. It may well be the case that case A is a floating chunk of ice which displaces 5.4 ml of water whereas case 3 is a cannon ball which sinks and displaces 7.8ml of water, the cannon ball may not be as buoyant as the ice but it has the highest buoyant force.

Answer 9

What is a property of metals?



metals have luster



metals are not ductile



metals are non-malleable



metals are bad conductors of heat

i think its A but i need someones opinion :)

Answer 10

That is correct

Answer 11

yay :)

Answer 12

Ask physics questions in physics, not social scenes. This is for things like law, psychology, sociology, and communications.

Answer 13

dude i don't know you so JUST STOP!

Answer 14

@ilovebmth1234 If you mean me, well, I am one of the moderators of the site. You can find out about is in the Code of Conduct and Terms of Service that you agreed to follow when using this site:

http://openstudy.com/code-of-conduct
http://openstudy.com/terms-and-conditions

As a moderator, we point out the assorted violations people do. Such as under the "Don't spam! Common forms of spam include:" where it says "Posting a question that is off topic for a particular group (i.e. posting a physics question in the Mathematics group)."

When people refuse to follow the rules, we try talking to them or sending official warnings. If thy does not work, we suspend them. If that does not work, they are banned and can no longer use the site. However, most people are simply smart enough that a little friendly advise on using the site properly is all that is needed.