I don't know what "appears heavier" means. A kilogram of mass is a kilogram of mass. Appearance has nothing to do with it. The cotton is (probably) less dense than the iron and will occupy a larger volume, but that doesn't have anything to do with the vacuum part.
they weigh the same silly
both are same havier
The have the same weight.
Same. That's an old trick question but feathers were more commonly used than cotton.
Due to atmospheric pressure the weight of 10 kg of cotton is grater than 10 kg of iron.
they weigh the same silly
both are same havier
They both weigh the same, 1 kg
The weight of a body in air is its apparent weight because the body body remains immersed in air . Therefore apparent weight of 1kg cotton and one kg iron is same .But volume of 1 kg cotton is greater than the volume of 1 iron
The have the same weight.
Same. That's an old trick question but feathers were more commonly used than cotton.
Due to atmospheric pressure the weight of 10 kg of cotton is grater than 10 kg of iron.
Iron fillings are heavier.
Iron is heavier because iron is a metal and metals are heavier but silica is not a metal so silica is lighter than iron.
No, atomically Iron is a heavier element
Lead is heavier than iron.
Yes iron is very much heavier then plastic.