4. List three examples each of objects that are com- monly measured by mass, by volume, and by length.

By mass - Vegetables,wheat, rice.

By volume - carocin,water,oil.

By length- Rod,thread,cloths.

where are the vectors ?

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.