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.
10 x log (10,500,000) = 10 x 7.02 = 70.2 dB. The noise level drops 6 decibels when the distance doubles. The second most important thing to understand is that the noise energy dissipates in the air by 6 decibels as the distance doubles. The table below gives an illustration.