Hot water, nothing aside from getting wet. Boiling water might pop it but it's doubtful. Plus you'd have to subject your hand to boiling water which isn't safe.
A heater, also nothing unless it touches the heating element & if it's hot enough it'll pop.
you have made a water balloon!
The warmed water next to the heater becomes hotter when the heater is switched on.
It should float up. Air is less dense than water, so it will float.
It will contract and become smaller, because of the pressure of the water pushing down on it. It will get smaller and smaller the further under water it is.
It would probably fill up with water, and then you'd have a water balloon.
It sinks. By pressing it under the water, the water pressure on the balloon increases slightly and compresses the air in the balloon. This increases the density of the (balloon, weight) combo so that is more dense than water, hence it sinks. High altitude weather balloons are only inflated partway with helium when they are launched from the ground. The envelope of the balloon expands as it rises in the atmosphere.
If a balloon is placed above boiling water, the heat from the water will cause the air inside the balloon to expand. The balloon will likely inflate and may eventually burst if the heat is not removed or the balloon is not released.
it will heat up..
A balloon that contains water would not last a long time under heat. the balloons latex rubber will not be able to handle the heat and will pop, but a balloon filled with air will pop instantly.
the reason for water coming out from under the dash is that a hose could have broke or you have a problem with your heater. your heater works off of the water in the radaitor and since it gets hot from the motor well it serculates threw the heater and that's who your heater works
die die
The volume of the balloon would decrease. The pressure of the water would press inward on the balloon and cause it to shrink in volume.