You call the post office for a ZIP code that you need, just after you looked up the phone number. Unfortunately, you dial the wrong number. You attempt to dial again, only to discover that you've forgotten the phone number. From an information-processing standpoint, how can this be explained?

Information in working memory began to disappear after twenty seconds or so.                                                            

Explanation:

Working memory: In psychology, the term "working memory" is also referred to as short-term memory, and is described as one of the systems which are temporarily responsible for managing and storing various information that is being required to carry out different "complex cognitive tasks", for example, comprehension, learning, problem-solving, and reasoning.

The working memory of an individual is one of the different parts of the information-processing model that generally lasts for about twenty to thirty seconds.

if you are on the computer you can not take a picture but you can upload one but i am not sure about phones but i'm pretty sure it's the but to upload one just click the paper clip looking thing/ link thingy thing and upload a pic