Mass = density x volume. Volume = mass/density. Yes, you need to look up the average density of fresh water.LoveKnowledge said:1. Your friend of mass 100 kg can just barely float in freshwater. Calculate her approximate volume.
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3. I am confused in how I am supposed to solve this simple problem? Do I need to calculate the average density of fresh water * the 100 kg mass?
To calculate the volume of a 100kg mass in freshwater, you will need to use the formula V=m/ρ, where V is volume, m is mass, and ρ is the density of freshwater. The density of freshwater is approximately 1000 kg/m³, so the equation becomes V=100kg/1000kg/m³. This gives a volume of 0.1 m³ or 100 liters.
The density of a substance is the measure of how tightly packed its molecules are. In the case of freshwater, its density is important because it affects how much space a certain mass of water will occupy. This is why the density of freshwater is needed in the volume calculation formula.
Yes, the volume of a 100kg mass in freshwater can change. This is because the density of freshwater can vary depending on factors such as temperature, salinity, and pressure. Therefore, the volume of a 100kg mass in freshwater may change if any of these factors change.
No, the volume and weight of a 100kg mass in freshwater are not the same. Volume is a measure of the space occupied by an object, while weight is a measure of the force of gravity acting on an object. The weight of a 100kg mass in freshwater will be approximately 980 N (newtons) due to the force of gravity, but its volume will remain the same at 0.1 m³.
Yes, there are other ways to calculate the volume of a 100kg mass in freshwater. For example, if you know the dimensions (length, width, and height) of the object, you can use the formula V=lwh to calculate its volume. However, this formula assumes that the object has a regular shape, whereas the formula V=m/ρ can be used for any object with a known mass and density.