question_answer 47)

                  A tuning fork A, marked 512 Hz, produces 5 bets per second, where sounded with another unmarked tuning fork B. If B is loaded with wax the number of beats is again 5 per second. What is the frequency of the tuning fork B when not loaded?

Answer:

                  \[{{v}_{1}}\,=512\,Hz,\,N=5Hz\]             \[{{v}_{2}}\,={{v}_{1}}+\,N=517\,Hz\]