Before free oxygen gas became abundant in the oceans and atmosphere, it reacted with a metal and produced what type of formations? the ionosphere
the ozone layer
banded iron formations
stromatolites

What will a positive and a negative charge do if they are separated from each other?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg