DEFINITION of 'Aggregate Demand'. The total amount of goods and services demanded in the economy at a given overall price level and in a given time period. It is represented by the aggregate-demand curve, which describes the relationship between price levels and the quantity of output that firms are willing to provide. Normally there is a negative relationship between aggregate demand and the price level. Also known as total spending.
Answers. Best Answer: Up to about 120 decibels, which is about as loud as a gunshot. Some of the factors that affect the loudness are energy released, the environment, and of course the distance you are from the lightning.
Best Answer: Thunder is the sound of rapidly heated air expanding and vibrating, and shock waves. Light travels faster than sound, so we see the lightning before we hear the resulting thunder. Using the speeds of light and sound as well as the atmospheric conditions, you could calculate exactly how far away the storm is. Chances are you're not going to have a calculator handy during a storm.