A devious child uses a spring inside a mechanical pencil to launch a small eraser into the air. The mass of the pencil is m and the spring constant of the spring is k. A. (100 points) By how much is the spring initially compressed if the eraser is moving at v immediately after the spring reaches its equilibrium length

e/c, where e is its total energy

the given statement is true.

sensory memory lasts for a fraction of seconds before the information is lost. it is the shortest -term memory and can be called as an element of memory. example: when we look at something and remember what it looks like, is just a second of observation. it degrades very quickly. it can also be considered as the process of perception rather than considering it as a memory.