Because of the gravity weighing them down. Water keeps people afloat, and can fight gravity, whereas air can't.
Humans weigh more.
No, body fat does not weigh more than water. Both body fat and water have different densities, with fat being less dense than water. This means that for the same volume, water would weigh more than fat.
Yes, mercury is denser than water, so a given volume of mercury will weigh more than the same volume of water.
They weigh the same
The density of the human body is greater than that of water. This means that when you step into water, the water you displace has a weight equal to your weight. If you weigh more than the weight of the water that you displace, you will sink.
yes
nonow if you had said does a pound of feathers weigh more than a pound of water.....
it depends. Water pressure can effect the weight.
if you are talking about the same glass that had water in it and THEN froze, then my friend the weight is the same. Ofcourse this is correct only if while freezing, no water spilled out of the glass (because ice takes up more space than water.
No. A beaver weighs less than one tenth of the average human.
they don't
Yes, fat does weigh more than water when comparing equal volumes. The density of fat is lower than that of water, which means that a given volume of fat will weigh less than the same volume of water. However, if comparing equal weights, fat will be less dense, so a pound of fat will take up more space than a pound of water.