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If a 150 lbm swimmer is floating in a nearby pool and 5 percent of her body volume is above the surface of the water then what is the swimmers density?
The density of water depends on its temperature, but as you didn't give a temperature and for simplicity sake here we will take the density of water to be 1g/cm3.
We will also consider the density of the swimmer to be uniform, else we will have to get into a serious discussion about anatomy.
Lets convert 150 lbs. into grams --->
150 lbs *453.59237 g/lb = 68038.8555 grams
In order to counter this mass 68038.8555 grams of water is going to have to be displaced. This will be a volume of 68038.8555 cm3.
95% of the swimmers volume = 68038.8555 cm3
so
.95x = 68038.8555 cm3. x= 71619.8479 cm3 where x is the total swimmer's volume.
density is Mass/Volume
so
Swimmer's density is 0.949 g/cm3 or 0.949 g/ml
What else can I help you with?
How is the density of a floating object relate to the density of the fluid it is floating in?
If an item floats, Then it is less dense than the liquid it floats in. One can prove this using bernoulli's equation. To determine the weight of the floating object, take the volume of water displaced by the portion of the object below the fliud surface then multiply that by the density of the fluid. This process gives you the bouyant force on the floating object and therefore the weight. Then take that weight and divide it by the total volume of the. Object to get its density. Also note that if an item is suspended below the surface but. Above the bottom of the fluid body, then the item and fluid have equal density. If the item sinks to the bottom it has higher density than the fluid.
What influence will the size of the surface and the mass of a floating object have on the floating ability of the object?
The size of the surface will affect the buoyant force acting on the object, with larger surfaces experiencing greater buoyant forces. The mass of the object will influence how easily it can displace water, affecting its ability to float. A larger mass may sink if it cannot displace enough water to counteract its weight.
What do you notice about the density of the floating obgects?
Their density must be thinner than the density of the matter which they are flowing on. For example water is denser than wood, so wood floats on water. And air is denser than helium, so helium filled balloons float, or fly upwards until they reach the height were air is thin enough so it's density is the same as heliums.
Which has less density a cork or water?
A cork is less denser than water because cork is floating on water so it will have less density than water
What does an object floating tell you?
An object floating typically indicates that it has a density lower than the fluid it is in. This buoyant force counteracts the force of gravity, allowing the object to stay suspended on the surface. Objects float due to a balance of these two forces acting upon them.
How is the density of a floating object relate to the density of the fluid it is floating in?
If an item floats, Then it is less dense than the liquid it floats in. One can prove this using bernoulli's equation. To determine the weight of the floating object, take the volume of water displaced by the portion of the object below the fliud surface then multiply that by the density of the fluid. This process gives you the bouyant force on the floating object and therefore the weight. Then take that weight and divide it by the total volume of the. Object to get its density. Also note that if an item is suspended below the surface but. Above the bottom of the fluid body, then the item and fluid have equal density. If the item sinks to the bottom it has higher density than the fluid.
What influence will the size of the surface and the mass of a floating object have on the floating ability of the object?
The size of the surface will affect the buoyant force acting on the object, with larger surfaces experiencing greater buoyant forces. The mass of the object will influence how easily it can displace water, affecting its ability to float. A larger mass may sink if it cannot displace enough water to counteract its weight.
What do you notice about the density of the floating obgects?
Their density must be thinner than the density of the matter which they are flowing on. For example water is denser than wood, so wood floats on water. And air is denser than helium, so helium filled balloons float, or fly upwards until they reach the height were air is thin enough so it's density is the same as heliums.
Do car tires sink or float?
no, a car tire will sink immediately after hitting the surface. The density of the rubber disallows the tire from floating.
What reaction produces a floating film on waters surface?
The reaction of soap with water produces a floating film on the water's surface. This is due to the amphiphilic nature of soap molecules, which have water-attracting and water-repelling properties. When soap is added to water, it forms a thin layer on the surface due to these properties.
Is earth floating on water?
no because its density is greater than one ( anything less than one, density wise would float ____________________ Actually, only Saturn "would float"; ie, has a density less than 1. Earth has a density of 5.5 or so, and if there were a big enough bathtub, would sink like the rock it is.
Can spider swim?
Most spiders cannot swim, as they are not adapted for aquatic environments. Some spider species can survive in water for a short period by floating or walking on the surface tension, but they are not considered strong swimmers.
How do you calculate surface density?
Surface density is calculated by dividing the mass of an object or substance by its surface area. The formula is surface density (σ) = mass (m) / surface area (A). The standard unit for surface density is kilograms per square meter (kg/m^2).
Are guppies surface swimmers?
Yes but they can and do go to the bottom of a tank too.
Which has less density a cork or water?
A cork is less denser than water because cork is floating on water so it will have less density than water
What does an object floating tell you?
An object floating typically indicates that it has a density lower than the fluid it is in. This buoyant force counteracts the force of gravity, allowing the object to stay suspended on the surface. Objects float due to a balance of these two forces acting upon them.
Can you make a penny float?
No, pennies are too heavy to float on water due to their density. However, you can create the illusion of a floating penny by carefully balancing it on the surface tension of the water.
