The force is in the same direction as the load moves. The force is up and the load moves up. This is the same results without the pulley. A fixed pulley makes work easier because you can pull down instead of pushing something up.
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
Interesting question. I'd take a guess that it could be either mirrors and light travelling in straight lines and being reflected, or optical fibres to achieve a perhaps similar result.
Answer:
heat, energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are brought together, energy is transferred—i.e., heat flows—from the hotter body to the colder. example: stove
Explanation:
hope this helps
An alloy that contains mainly copper and tin is bronze