Simon Bridge said:If you really have no idea at all, then you need to review your course notes, a text, and maybe googling the subject you just covered in class.
So what determines how much of an object floats above the water?
The object is not completely floating 2 cm of it is submerged in water and that submerged part has the thread that connects the ball to the objectSimon Bridge said:An object will float if the mass of fluid displaced is equal to the mass of the object. This is called "the principle of Archimedes" and you should memorize it.
... in this case you have a composite object.
The mass of an object is it's volume times it's density.
You know an equations for the volumes of various geometric objects.
I have solved it thank you I just re arranged some formulas and it worked like magic this is physics I guessSimon Bridge said:An object is either floating or it isn't. There is no "completely".
All floating objects are at least partly submerged - it is also possible to float when completely submerged.
The principle of Archimedes works for anything that floats ... everything else sinks.
So you also need to realize that a sunk object, that is not being supported, displaces it's own volume of water. All this should be in your class notes.
You know equations for the volumes of objects ... i.e an object with cross-section area A and height H has volume AH if that object has density p, then it's mass is pAH ... see how I did that?
Do you know the formula for the volume of a ball with radius r?
To calculate the radius of a metallic ball, you will need to know the volume and density of the ball. The formula for calculating radius is: radius = (3 * volume) / (4 * pi * density). You can measure the volume of the ball by using a displacement method, and the density can be found in a reference table or by conducting a density experiment.
The units used for volume and density should be consistent with each other. For example, if the volume is measured in cubic centimeters (cm^3), then the density should be in grams per cubic centimeter (g/cm^3). The resulting radius will also be in the same unit as the volume, so in this case, it would be in centimeters (cm).
Yes, the radius of a metallic ball can be calculated if the mass and diameter are known. The formula for calculating radius using mass and diameter is: radius = (diameter / 2) * (1 / density) * (mass / pi). Again, the density should be in a consistent unit with the mass and diameter for accurate results.
The accuracy of the calculated radius will depend on the accuracy of the measurements used for volume, density, mass, and diameter. The more precise the measurements are, the more accurate the calculated radius will be. It is important to use proper measuring tools and techniques to ensure accurate results.
The radius of a metallic ball can change over time due to factors like corrosion, wear and tear, or changes in temperature. Therefore, it is important to regularly check and measure the radius of a metallic ball to ensure that it remains within the desired specifications for its intended use.