When an earthquake occurs, two types of sound waves are generated and travel through the earth. the primary, or p, wave has a speed of about 10.0 km/s and the secondary, or s, wave has a speed of about 2.5 km/s. a seismograph, located some distance away, records the arrival of the p wave and then, 180 s later, records the arrival of the s wave. assuming that the waves travel in a straight line, how far is the seismograph from the earthquake?

Air masses are characterized by various properties including temperature humidity air temperature pressure and wind speed . which of the following air masses is associated with low relative humidity and high temperature

Which statements describe sustainable development? multiple answer choice -fishing does not remove more fish from water systems than can be replaced by the number of fish that will be born to replace them. -sustainable development is development that is designed to improve the economic conditions in less-developed countries. -sustainable development is mainly a regional issue. -sustainable development means water is used at a rate that won't reduce the amount available for future use. - sustainable development policies only need to be concerned with environmental protection. - trees cannot be cut down faster than the number that will be replaced by new growth.

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