yes
Yes, there is a difference in weight between hot air and cold air. Hot air is lighter than cold air because the molecules in hot air are more energetic and spread out, decreasing the overall density of the air. This difference in weight is a factor in phenomena such as convection currents.
In a vacuum, they always land at the same time. In air, it's not so much the weight but the air resistance. If the shape and density are about the same, then the difference in weight doesn't make any difference.
The difference in weight between propane and air is due to their different densities. Propane is heavier than air, so it will sink and accumulate at lower levels.
Because of buoyancy ; something that acts in the opposite direction to the force of gravity to make the object feel lighter.
The upthrust of an object can be measured by determining the difference between the object's weight in air and its weight when immersed in a fluid. This difference in weight is equal to the upthrust force acting on the object. It can be calculated using the formula: Upthrust = Weight in air - Weight in fluid.
will make all the difference depending on make and model
no it can make you gain weight!
Take a large container, pump out all the air from inside it. Weigh it. Put air inside and then weigh it again. The difference would be the weight of the air inside. Air molecules have mass (air is "stuff") and things with mass have weight when in a gravitational field, such as on Earth. If air didn't have any weight, we wouldn't even have an atmosphere.
The difference in an object's weight in air and in water is due to the buoyant force acting on the object in water. In water, the object displaces an amount of water equal to its volume, resulting in an upward buoyant force that partially counteracts the object's weight. This buoyant force reduces the object's effective weight in water compared to in air.
Swallowing air doesn't make you gain weight, but it does cause bloating. Bloating can make you look like you have gained a little bit of weight, until it stops.
weight of object in water = (Mass of object) time acceleration of gravity - Mass of an equal volume of water times acceleration of gravity. note weight of object in water can be a negative value.
Yes, air does have mass. This can be determined through experiments that involve measuring the weight of a container filled with air and then vacuuming out the air to compare the weight difference. This is a scientific method used to demonstrate that air has mass.