7. The position of a particle is given by the expression x= 4 cos( 3 πt + π), where x is in metersan
問題詳情
7. The position of a particle is given by the expression x= 4 cos( 3 πt + π), where x is in metersand t is in seconds. What is the frequency? (A) 1.0 Hz (B) 1.5 Hz (C) 3.0 Hz (D) 4.0 Hz (E) 9.4 Hz