air has weight or not?
308792
It might not seem like it, but air has weight. Anything with mass has weight, and we know air has mass because (for example) we can feel it when the wind blows. The total weight of the atmosphere exerts a pressure of about 14.7 pounds per square inch at sea level.
287548
Mass and weight example - the moon The Moon's gravity is much less than the Earth's gravity - approximately one sixth. So, a 100 kg astronaut weighs 980N on Earth. On the Moon, the astronaut would weigh only 162.2N. However, the astronaut's mass is 100kg where-ever they are.
1378012
The weight of an object is the gravitational force between the object and the earth. Mass is a property of the object and does not change from place to place whereas weight changes with the change in acceleration to due gravity (g). Thus an object having a weight of 98 N has a mass of 10 kg.
203771
The difference between mass and weight is that mass is the amount of matter in a material, while weight is a measure of how the force of gravity acts upon that mass. Mass is the measure of the amount of matter in a body. ... Weight usually is denoted by W. Weight is mass multiplied by the acceleration of gravity (g).
696681
According to the International Standard Atmosphere (ISA) values—15° C at sea level—the density of dry air is at: In Metric units: 1.225 kg/m^3. In Imperial units: 0.0765 lb/ft^3.
1279920
Since air is invisible we easily forget that it is all around us. When we blow air in a balloon, we can feel the air pushing on the balloon. It's the same with a tire or basketball. When we sit in front of a fan, we can actually feel the air molecules moving in the same direction.
756489
The answer to this question lies within the difference between mass and weight. Mass is a measure of how much matter an object contains, while weight is a measure of the force of gravity on the object. ... For example, a person with a mass of 70 kg on Earth has a mass of 70 kg in space as well as on the moon.
1302283
In physics, apparent weight is a property of objects that corresponds to how heavy an object is. The apparent weight of an object will differ from the weight of an object whenever the force of gravity acting on the object is not balanced by an equal but opposite normal force.
1114970
It might not seem like it, but air has weight. Anything with mass has weight, and we know air has mass because (for example) we can feel it when the wind blows. ... This is because the parcel of air is embedded in surrounding air that has the same density (mass per unit volume).
960915
Weight is the force of gravity. It acts in a downward direction—toward the center of the Earth. Lift is the force that acts at a right angle to the direction of motion through the air. Lift is created by differences in air pressure.
97224
By contrast, an object's apparent weight is the upward force (the normal force, or reaction force), typically transmitted through the ground, that opposes gravity and prevents a supported object from falling. ... By definition, Fgravity, the downward force of gravity, is Alice's actual weight.
787131
["Air takes up space. It's made up of atoms and molecules. ... ", 'Air is made of gases, including nitrogen, oxygen, water vapor, and other materials. These substances are what give air mass.', 'Air exerts pressure. ... ', 'Air has weight. ... ', 'Air can be compressed. ... ', 'Air is affected by temperature.']
721934
CFC molecules are indeed several times heavier than air. ... This is because winds and other air motions mix the atmosphere to altitudes far above the top of the stratosphere much faster than molecules can settle according to their weight.
1046481
Butane is a bit more than 2 times heavier than air. Butane gas weighs 2.5436 kg/m³ whilst air weighs 1.225 kg/m³. Propane is 1.55 times heavier than air.
265595
The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer.
1228065
The air that is inside a ship is much less dense than water. ... The average density of the total volume of the ship and everything inside of it (including the air) must be less than the same volume of water. As a ship is set in water, it pushes down and displaces an amount of water equal to its weight.
1457989
Every object on Earth has weight, a product of both gravity and mass. A Boeing 747-8 passenger airliner, for instance, has a maximum takeoff weight of 487.5 tons (442 metric tons), the force with which the weighty plane is drawn toward the Earth.