how much does a baby weigh if his mass is 4.2k and gravity is 9.8
3.5 kg (assuming you're on earth)
3.5 Kilograms
Kilogram is a unit of MASS, not a unit of WEIGHT. A small child might have this mass (a newborn typically has a mass somewhere between 2-4 kg.)
2160 mg
3 kilograms - if you are asking about human babies.
80 times the mass of Jupiter
Weight is a force, so weight is measured in newton. However, when people talk about a person's "weight" they usually mean its "mass" - people tend to confuse that. Mass is measured in kilograms.
A paper clip weighs about one gram. A stick of butter weighs four ounces, as does a newborn panda bear. The correct word is mass, not weight.
The raccoon has a body weight of 3.5 to 9 kg (8 to 20 lb).
Mass and weight are not forces.But weight or a pull of gravity of an object with mass has force
No. Mass is independent of gravity, but weight is a function of gravity and mass.
Anything with mass has weight; air has mass, therefore it has weight.
The weight is dependent on the mass. Mass is the same everywhere but since weight is mass * acceleration due to gravity, weight is the dependent variable.