Parallax angles of less than 0.01 arcsec are very difficult to measure from Earth because of the effects of the Earth's atmosphere. This limits Earth based telescopes to measuring the distances to stars about 1/0.01 or 100 parsecs away.
The electric force between two objects with charge q1 and q2 is given by
where ke is the Coulomb's constant while d is the distance between the two charges.
We can see that the force F scales as the inverse of the square of the distance:
. Therefore, when the two objects move apart from each other, the distance increases and therefore the force between them decreases.
Answer:
carbon has tetra valency while oxygen can make 2 bonds while nitrogen can make 3 bonds and hydrogen can make 1 bond so i think answer is definatly carbon
Explanation:
Momentum before = momentum after the push.
kinetic energy before < kinetic energy after the push.