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

تمرين 72

During practice in a huddle, a quarterback shouts the play in anticipation of crowd noise during the actual game. To a receiver 0.750 m away from the quarterback in the huddle, it seems as loud as the noise from a screaming child. When they get into practice formation, the quarterback yells at twice the output power, yet the instructions seem only about as loud as normal conversation. Use typical values in Table 14.2 to estimate how far from the quarterback the receiver is in the formation.