Answer:
The Rock
Explanation:
The paper is very thin and light so it has more air reisistance which will cause it to fall slower than the rock that has a larger density.
Answer
the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen is 1
Explanation
The average kinetic energy of a gas molecule at temperature T is given by following formula
...............(1)
Here k is Boltzmann's constant (
).
From above equation it is clear that average kinetic energy of a gas molecule only depends on temperature.
Therefore kinetic energy of oxygen molecule
....2
and kinetic energy of hydrogen molecule
....3
the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen is given as


Therefore, the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen is 1
He proposed the theory of Continental Drift. He believed that all of the continents were once joined together in a super continent he called Pangea (not sure if that's spelled right I studied this awhile ago). He proved this by showing similarities in fossils in completely different continents and showing how well the continents could fit together.
Answer:
they were hunter gatherers
Explanation: