they are the same... they are both 1kg
Because sand is a more dense substance than feathers - it has a larger mass-to-volume ratio.
Since one Kg of iron is much more dense (the weight is concentrated in a smaller area) than cotton, it takes up less space.
Neither!!! They both have the same mass at 1 kg. However, the feathers will occupy a greater volume.
10 kg is greater than 6 kg. kg is the unit of mass. Hence feather has more mass than lead in this case.
Sand. Density is mass / volume. So a higher volume will equal a lower density. Clearly a Kg of feathers will (normally) take up more volume than a Kg of sand therefore the feathers are less dense. You could think of it this way: density is measuring how close together the atoms in a substance are. When the atoms are closer together they take up less volume and the substance is more dense. If you put a Kg of feathers in a box, the feathers would not all join together perfectly meaning that there would be gaps between feathers and therefore the volume taken up by the feathers is greater. You could prove this by trying to push your hand through the feathers. You would be pushing through partly air (which is a mixture of gases and the atoms in a gas are further apart than in a solid) so the task would be easier. It is like comparing pushing your hand through a solid and pushing your hand through solids separated by gas. The latter is easier because there is some "room" for the atoms in the solid to move in to and thus for the feathers to move out of the way of your hand.
Because sand is a more dense substance than feathers - it has a larger mass-to-volume ratio.
An iron weight sinks in water because its density is greater than that of water. The weight pushes water out of the way, displacing it and causing it to sink to the bottom. This is due to the principle of buoyancy - objects will sink in a fluid if they are denser than the fluid.
They are both exactly the same - they weigh a pound. However, the feathers will take up a lot more space (about 0.77942 litres for every kg of feathers - or 779 cm3/kg) whereas the lead would be much smaller (about 0.12700 itres for every kg of iron - or 127 cm3/kg).
Although they both weigh the same, the kg of feathers would be much more unwieldy, due to its volume. If the feathers were being carried in an open container, on a windy day, when you reached your destination, you would most likely have many less feathers than when you started!
Since one Kg of iron is much more dense (the weight is concentrated in a smaller area) than cotton, it takes up less space.
It's a trick question relying on your preconception that feathers are lighter. They of course weigh the same a kg of versus a kg of. Of course it will take a heck of lot more feathers.
Both 1 kg of cotton and 1 kg of iron weigh the same - they both weigh 1 kg. Weight is based on the mass of the object, not the material it is made of.
iron is more dense then water and wood is less dense then water. iron sinks because it is heavier then the density of water. wood sinks because woods density is lighter then the density of water.
Diamond is more dense than iron. The density of diamond is around 3.5 grams per cubic centimeter, while the density of iron is around 7.9 grams per cubic centimeter.
One kilogram of lead is denser than one kilogram of feathers, so it takes up less space. This makes it easier to carry the lead compared to the same weight of feathers, which would occupy much more volume and be more cumbersome.
Neither!!! They both have the same mass at 1 kg. However, the feathers will occupy a greater volume.
10 kg is greater than 6 kg. kg is the unit of mass. Hence feather has more mass than lead in this case.