What is the buoyant force that the atmosphere exerts on me?
832535
The way to solve this:\n1 Estimate your volume. You probably float in a swimming pool, but not by much. Whatever your mass is, you displace that mass of water when you float. From the density of water, that mass of water, m, has a volume of \nV = m * (1 m^3) / 1000 kg\nSo V is a bit less than your volume, assuming that you float with your head above the water. So figure that your volume is 1.1*V. \n\n2 Find the mass of 1.1*V of air. From the density of air, the mass of that volume is\nMair = 1.1V * (1.3 kg) / 1 m^3\nFor the bouyant force of the air on you, F = Mair*g.
919770
It is a force that pulls you to the earth.
1035134
The Atmosphere is hot(~~)
63147
Archimedes' principle states that the buoyant force experienced by a submerged object is equal to the weight of the liquid displaced by the object. Experimentally this appears in the fact that the submerged object apparently weighs less by an amount equal to the weight of the liquid displaced. The buoyant force can be expressed as:\n\nFb = W(air) - W(liquid) = dgv \n\nwhere d is the density of the liquid, g is the acceleration of gravity and v is the volume of the immersed object (or the immersed part of the body if it floats).
751261
It will accelerate rapidly to the surface of the water, and then continue to float upwards through the air, but with less acceleration.  This is all due to the buoyant force.  When an object is immersed in a fluid, the fluid exerts an upwards force equal to the weight of the displaced fluid.  Of course, gravity still acts downwards on the object.  But if the object is placed such that it displaces a volume of fluid with a greater weight than itself, as when the object is hollow or is less dense than the fluid, the net force is upwards.  Helium is less dense than air, and is much less dense than water.  Since water is more dense than air, the displaced volume of water weighs more than the displaced volume of air, so the buoyant force of the water is greater than that of the air.  But it is always a net upwards force, so the balloon is always accelerating, until it reaches its terminal velocity.  Terminal velocity is usually encountered with falling objects, but would also occur in an object accelerating upwards.
1172351
wind has entirely everything to do with pressure, not so much temperature..but since temperature differences causes pressure differences, i'll let it slide\n\nWind always flows from High to Low...and as you see on weather maps, meterologists give these highs and lows numbers..corresponding to the pressure on a barometric scale\n\nso if you have a high pressure system of 31.15" of Mercury..and a low pressure of 28.45" of Hg then you have whats called a pressure gradient\n\nas this pressure gradient increases (the high gets higher and the low gets lower) the wind strength increases...\n\nSo the strength and direction of wind is created by the pressure gradient..but its also influenced by teh earths rotation..this is called the coriolis force...the fact of the matter is, is that the air is moving over a rotating surface..so in the Northern Hemisphere, the wind is seemingly deflected to the right..because the earth is spinning
987167
Atmospheric pressure and physics
702421
Taking into concept the GRAVITY of the situation and the GRAVITY of the question I would have to say with GRAVITY that the force pulling the water in towards the earth is GRAVITY!
309044
Because of buoyant force acting against our weight. The amount of the bouyancy is decided by the Archimedes principle according to which the force acting on us in the upward direction is determined by the amount of water displaced by us which indeed is equal in volume to the volume of the submerged part of our body. \n\nThe buoyant force acts upward and balances our weight so that the net force acting on our body becomes 0 and we feel weightlessness.
37097
Technically that question is impossible to answer.  It depends on any wind that was present, the atmospheric pressure, any air resistance, etc.
563386
Air pressure or atmospheric pressure is the pressure above any area in the Earth's atmosphere caused by the weight of air. It depends on the altitude and weather conditions.\n\nGas pressure is explained by kinetic theory. Gas pressure is considered the pressure arising from the force exerted by colliding gas molecules onto the walls of the container. Gas pressure depends on the kinetic energy of the gas molecules.\n\nfor more details see: \nhttp://en.wikipedia.org/wiki/Kinetic_theory#Pressure\nhttp://en.wikipedia.org/wiki/Atmospheric_pressure
110828
Archimedes said: When an object is submerged in water, there is a buoyant force upwards on it that is equivalent to the weight of the water displaced. \n\nSo if you have a heavy object underwater, and it is displacing water, its net weight will be less than when it is in air, displacing air, which is much lighter, so has a much smaller buoyant effect.
823590
Bouyancy. The 9.8 (you did not specify the units) object, when in water, is partially supported by the bouyant force. The bouyancy force is the weight of the displaced water. The water level is higher because the displaced water had nowhere else to go but up. The volume of water is still the same though.
823430
the buoyancy of the object and its volume.
699724
fluids - convection is due to the movement of molecules
139288
I think this would be a good topic for a college paper, especially if you go into the details and work it all out carefully. \n\nThe previous answer is correct. I might add a few comments to help, however. \n\nIt comes down to density, and buoyant forces. If there is an unbalanced force against something, then it will accelerate because of Newton's second law. If the force from below on a parcel of air is less than the force of that parcel of air downwards (due to its weight, and pressure from air column above), then the parcel of air will sink. And if the force from above is less than the force from below, the parcel of air will rise.\n\nThe smoke is composed of gases and suspended particles in the air that can be quite small (small enough to be about the same size as the wavelength of light, and cause selective scattering, creating phenomena such as a blue moon). \n\nTherefore, smoke can rise or fall, depending on the forces acting on a parcel of air containing the suspended smoke particles. \n\nThe density of the air, and the pressure it exerts, depends on the temperature. A good first step is to assume that the air parcels satisfy the Ideal Gas Law, PV=NRT, where P is the pressure of the parcel, V is the volume, T is the temperature,  R is the universal gas constant, and N is the number of molecules. \n\nThe pressure at the bottom of an air column of uniform density gas of height h is rho*g*h, where rho is the density and g is the acceleration of gravity. \n\nThere is a lot of material about this on the internet and in other places. Hopefully our comments are enough to get you started on this, so you can analyze this carefully and write a nice paper.\n\n----------\n\nAddendum:\n\nAs the next answer states, and as in the reference, the constant n is typically used for number of molecules and the constant N is typically used for number of moles. I apologize.\n\nSo it is \n\nPV=NRT, or alternatively, PV=nkT\n\nwhere k is the Boltzmann constant. See the reference attached.
443459
Buoyancy is responsible for floating everything on the water surface. Buoyant force is proportional to the surface area of the object. For ship is is too much and for ball it is too less.