Given:
Frequency produced by String A and B = 1.0 Hz.
Frequency produced by String A and C = 2.0 Hz.
Let's find the frequency produced by string B and C.
Apply the formula:
[tex]f_{21}=|f_2-f_1|[/tex]Now, for the frequency produced by A and B, we have:
[tex]\begin{gathered} f_{BA}=|f_B-f_A| \\ \\ 1.0=f_B-f_A \\ \end{gathered}[/tex]For the frequency produced by A and C, we have:
[tex]\begin{gathered} f_{CA}=|f_C-f_A| \\ \\ 2.0=f_C-f_A \end{gathered}[/tex]Now, we have the system of equations:
1.0 = fB - fA
2.0 = fC - fA
Let's solve both equations simultaneously.
Rewrite the first equation for fA:
fA = fB - 1.0
Substitute (fB - 1.0) for fA in the second equation:
2.0 = fC - (fB - 1.0)
2.0 = fC - fB + 1.0
2.0 - 1.0 = fC - fB
1.0 = fC - fB
Therefore, the beat frequency string B and string C will make when played together is 1.0 Hz.
• ANSWER:
1.0 Hz.