Chemical and physical properties are used to help identify substances. A substance's chemical properties identify whether or not that substance reacts with another substance or it can be said that a chemical property of a substance will helps in deciding whether the substance will react or not with another substance. To react with oxygen, the substance should have the ability to burn, the more quickly the substance burn, more readily the substance will burn to produce light and heat.
This can also be explained with the formation of rust on a chemical compound, The more readily the compound reacts with oxygen, more readily it undergoes rusting .
For example when iron kept in open air, it undergoes rust as it reacts with oxygen.
Distance between the Tulsa, OK observatory and the center of this fictional earthquake: 20 kilometers.
An earthquake generates two major seismic waves that travel through the crest at different speeds:
Primary (P) waves travel at between 6 and 7
Secondary (S) waves travel at approximately 3.5 .
Let and denote the speed of the two waves, respectively. Let , resembles the time required for each waves to reach the observatory.
Both and would represent the separation between the source and the observatory. Thus
Given the difference between and :
( given that and )
Note that wave speed data involved in calculations above came from an external source. You shall repeat those steps with speeds indicated on the worksheet if possible.