The number of vibrations a sound source with a frequency of 100 Hz makes in one minute.  What’s given in the problem  The frequency of the sound source is 100 Hz. Time duration is 1 minute.  Helpful information  1 minute is equal to 60 seconds. Frequency is the number of cycles per second.  How to solve  Multiply the frequency by the time in seconds.  Step 1: . Convert minutes to seconds 1 minute = 60 seconds. Step 2: . Calculate the total vibrations Multiply the frequency by the time in seconds: 100× vibrations/seconds
• 60seconds = 6000vibrations. Solution  The sound source vibrates 6000 times in one minute.