lighter
heavier than a pencil but lighter than a book.
no in bed its heavier and on the moon it gets lighter... do an experiment.
I'm not exactly sure what you mean when you say "heavier" and "lighter". Does that mean the object's "weight" ? Could that be the same as the gravitational force on it ?
No, heavier by the weight of the extra air put inside it. Even if you filled the tire with helium it is still heavier, although the additional weight would be less than the additional weight of air.
No lighter things do not fall faster than heavier things. In a vacuum they will fall at the same speed. Normally the heavier thing will fall down faster because of its weight. Sometimes the lighter thing falls faster depending on the air resistance.
Because lighter and heavier refer to an objects weight - which has nothing to do with density ! For example - a kilo of feathers is heavier than half a kilo of lead - but lead is more dense !
Yes it is by 0.25%
in kg for larger, heavier objects, but g for smaller lighter objects
Saltwater is heavier because saltwater contains salt which adds to its overall weight. Freshwater does not have any dissolved salt so it is lighter then saltwater
The atomic weight of nickel lies in between that of cobalt and copper.
The lighter a certain object is, the more likely it is to float, if the object is heavier, the object will sink.
The sun is far more massive than the moon.