A spring is stretched a distance of 2 m. If squeezed and released, the spring will move at a speed of 4 m/s. How long would this take to happen?

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Most metamorphosis processes take place

The same side of the moon always faces earth because the