buoyancy's questions - English 1answer

352 buoyancy questions.

The source of my question can be found via this link: https://www.youtube.com/watch?v=wwjtuZ5vTvc&index=94&list=PLAD5B880806EBE0A4 There is an object that weight 10N outside of water and 2N ...

I'm asking about a real experiment. As in this I have read in an answer in this site which is What atomic forces are acting to resist me pushing an air filled bottle underwater?. As in ben51's answer ...

On earth if you submerge an upside down bottle into a pool or some large tub of water the bottle doesn't fill with water. I believe this is because of air pressure and air has nowhere to go. What ...

I took an empty clear sphere with radius r, put some weight inside this sphere, and put in into the water. I calculate the buoyancy force as: Volume of the sphere = Volume of the water displaced ($V_{...

Yes air is less dense than water but how does the bottle know to rise or indeed to move? It's not electromagnetism I think. Does this have a relation to gravitational forces? Is it to do with the ...

One can do a neat little experiment as described here and discover that atmospheric pressure is sufficiently strong to keep water up against its own hydrostatic pressure as long as there is a material ...

How is the weight and buoyant force related for a floating body? My answer For any floating body the upthrust experienced by the body is equal to the weight of the body and the upthrust or the ...

I read a story regarding the Archimedes' principle in a magazine of popular science and I am thinking of the following question: how does the density of the fluid change the buoyancy force for the ...

Why do objects float in liquids denser than themselves? I know that a balloon floats on water because it has air in it, but why?

i was reading a previously locked thread about the compressed air from tires in the movie transporter three, and the writer asked if compressed air is heavier than regular and therefore does not float....

If I place a cube in water, the force at the top of the cube, F1 will be Ahρwg. Where, A = cross-sectional area h = height at the top ρw = density of water g = acceleration due to gravity All this ...

If a cube -"of lesser density than the liquid"- with perfectly flat surfaces was placed in a liquid container with a perfectly flat bottom , so that there were no liquid molecules between the two ...

Suppose a cylinder sits upright in "dry water" (zero viscosity). The cylinder has half the density of the water, and we'll ignore the dynamics of the atmosphere. If I push the cylinder down some past ...

I love airships. I often like to do research on the old designs from the 20s and 30s. Trying to figure out how they work and how they're built etc. Lately I've been working on trying to calculate how ...

I was reading about why lifting an object in water is easier then in air. The explanation goes on the line that the water which was above the object will fall downward and sideways, taking the place ...

Our teacher taught us it is vρ(g+a) when accelerating upward. But I can't understand the reason for it. Isn't it vρg as buoyant force is equal to the weight of displaced fluid. Please help me with ...

Can bodies of equal volumes but slightly different mass (that is slightly different density) float (at rest) fully submerged in a liquid (may be at different depths)? Consider - At different depths, ...

After some research, I can see that Millikan (his original experiment) calculated the terminal velocity of oil droplets, and then used it to calculate the radius of since they were too small to ...

This might be a silly question but I want to know why oil actually floats on water. I tried to explain it to myself using Archimedes' principle but that didn't help. Archimedes’ principle, ...

In their derivation of the Grashof number (Gr), Çengel and Ghajar make the following comment: Note that there is no noticeable gravity in space, and thus there can be no natural convection heat ...

Would a Helium powered balloon vehicle work on Mars? Things that might need to be answered: How much liquid Helium would you need to pack in order to fill a balloon with enough helium gas to travel ...

Why is it physicists & engineers believe the hydrostatic paradox, (force exerted by a liquid is based on the internal pressure, which internal pressure is a function of depth) and thus that a ...

A body is floating partly immersed in a liquid. The body and the liquid are taken to the Moon. What will happen next? Will its immersed part come out of the liquid? Will it sink? Will it continue to ...

Well I noticed something with a helium balloon which a little weight was tied to its rope to avoid it flying away. When the weight is on the ground and the rope is taut, I pulled it down a little and ...

Suppose we have a membrane that not chemically react to make a balloon and we seal airtight then steal electron from gas atom inside to make it positively charged and repel each other. Is it possible ...

The answer to this question is given as (a) 5m. Due to the difference in pressure at the curved parts there will be a net upward force of buoyancy. And how can that be calculated without knowing the ...

I am a scuba diver and, hence, need to take into account how buoyant the materials are I take with me into the water. Given that I have a LOT of diving equipment, it is practically impossible to test ...

We all know balloons which are filled with gas that's less dense than air. After a few hours, the balloon drops to the ground. The reason for this phenomenon, as far as I understand, is that the ...

The situation I am thinking about is that, for example, lets say that there is a block that weighs 10N outside of water, when it is put into water its apparent weight is 2N. From this it can be ...

Consider the buoyancy force in water with very small but macroscopic particles in it. Such particles (suspension) will very slowly drift downwards and will eventually settle on the bottom. If one did ...

If I consider a system give like this where W represents water and O represents any other liquid denser than water and the black object is a sphere of unknown density. according to a question i have ...

I am trying to understand more about buoys. How big does a buoy have to be to float a person who weighs 20kg?40kg? Please explain and provide formula. Thank you

Situation: (self-made) A (green) block is partially immersed in a (blue) liquid and the vessel is accelerating upwards with an acceleration $a$. The block is observed by (stick-figure) observers $O_1$...

I have some object (300g) that I want to keep above the water. I could run experiments to figure out how much foam I need but I'd have to do this for every object with a different mass. What equation ...

this is my first attempt at this forum, hope you can help me. I'm trying to design a kind of water valve with inexpensive materials as a first prototype. The mechanism of the water valve goes like ...

Why does an object sink when filled with water, even if the same object would float without water inside? For example, put an empty glass cup into water, and it floats. But if you put a plastic ...

I have a problem as on the topic, see the below. First I added $25\hbox{cm}^3$ water in to a beaker. Then I added $2N$ oil onto it. But the level of the water was still $25\hbox{cm}^3$. My problem ...

A cube of oak wood with very smooth faces normally floats in water. Suppose you submerge it completely and press one face flat against the bottom of a tank so that no water is under that face. ...

A body if placed on a solid on earth, it gets reaction , so in the case of liquid say(water) which is very less solid the action by the body decreases as liquid molecules gets displaced , so the body ...

Here is a task where I need to write the torque equation (or moment equation) around A Where forces G1 and G1 exist because of gravity, and force Fb because of buoyancy. In my mind, only forces G1 ...

With horizontal water and downwards gravity, buoyancy pushes upwards. However, in which direction is it pushing (say a boat) when the gravity is downwards but the boat is on a non-horizontal ground ...

Conducting a little hypothetical experiment here that I do not have all of the equipment to physically conduct, let's say that one uses a toy plastic solider like this ... as well as a sealable ...

Dropping an anchor from a boat

5 answers, 16.872 views buoyancy
A yacht on a lake drops its anchor overboard. What happens to the water level in the lake? It rises very slightly. It falls very slightly. It stays exactly the same. It's impossible to ...

Suppose I have a wooden block that floats in water and I put it in an empty glass beaker. Then I poured water in the beaker so carefully that no water goes under the block. In that case, would the ...

From what I got out of Archimedes principle, it essentially states that the buoyancy force is the weight of the fluid in which the object is submerged in. But in my general physics class, it states ...

An object floats in both water and oil. Oil is less dense than water. While floating, the object displaces a larger volume of oil than water. why is the buoyant force the same in each liquid ?

An object less denser than water is submerged in water in a sink and tied to the bottom of the sink with a string. The sink is on a scale. If the string is cut, what will the reading on the scale be ...

I have a problem with an exercise that I require help: Find the immersion of a homogeneous straight cone of height h and specific weight $\gamma_1$ in a liquid with specific weight $\gamma$. The ...

I was taught that pressure difference in a fluid is the cause of buoyancy force, but I when I think of the buoyancy force at the bottom of a fluid, this explanation seems to give me some weird results....

I used to think that the shape of an object determines its ability to float (boat-shaped objects are more likely to float, and spheres tend to sink). But my friend, who is fond of making me look ...

Related tags

Hot questions

Language

Popular Tags