College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 48

Two separate seismograph stations receive indication of an earthquake in the form of a wave traveling to them in a straight line from the epicenter and shaking the ground at their locations. Station B is 50 km due east of station A. The epicenter is located due north of station A and 30° north of due west from station B. (a) Draw a sketch and use it to determine the distance from the epicenter to A. (b) Determine the distance from the epicenter to B. (c) Station C is located an additional 20 km east of B. At what angle does C report the direction of the epicenter to be