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float
Yes.
by making a boat and that way a boat can float anytime in water
no
No, a ball will float higher in oil than in water because the density of oil is lower than that of water. The buoyant force experienced by the ball in oil is greater, causing it to float higher.
float
float
ball
Depends on the medium, and whether the ball is solid or not. A solid ball would float on mercury, sink in water. If it were hollow enough (or filled with, say, cork) it would float in water.
Volume of the beach ball: 4/3*pi*radius^3
15cm
In the US, a billiards ball or pool ball is 2.25 inches in diameter. This is 1.125 for its radius. The only exception is the oversize cue ball, which is 2.375 inches in diameter.
10 inches
40 millimeters
Yes.
A typical beach ball is about a quarter of a meter in radius. They are not all exactly the same size, so this answer is not precise.
radius of cricket ball is 52 mm. its red in test cricket. has white color in odi.