A coin is placed on an ice cube floating in a glass of water. when ice cube melts and coin sinks at the bottom of glass, then water level in glass will
Answers
Answer:
Explanation:
The addition of the ice cube would raise the water in the glass because it will displace the water currently in the glass. As the ice cube melts, it will not change the water level because the water released from the melting ice was already "pushing" on the water around it. You are just transforming the frozen water to a liquid state.
In fact, after the initial "plop" of the ice cube into the cup (which made the water level spike in the first place) once the ice cube melts you may see a decrease in water level because the frozen water expanded while in ice cube form. It took up more volume in the cup while frozen than it will when melted. On the other hand, depending on the shape and size of the cube, some of the cube might have been "sticking out of the water" in the way that ice bergs do. That piece would not be displacing water initially, but would add to the water supply as it melted. In this case, the water might only rise a fraction with the melting of the ice cube.
The trick is, you have to know how big the cube (and its shape) to figure.