A piano tuner uses a 512-Hz tuning fork to tune a piano. He strikes the fork and hits a key on the piano and hears a beat frequency of 5 Hz. He tightens the string of the piano, and repeats the procedure. Once again he hears a beat frequency of 5 Hz. What happened?

A piano tuner hears a beat every 2.00 s when listening to a 264.0-Hz tuning fork and a single piano string. What are the two possible frequencies of the string?

On a piano, the note middle C has a fundamental frequency of 262 Hz. What is the second harmonic of this note?

Find the measures of a positive angle and a negative angle that are co-terminal with the given angle.

$$\boldsymbol { \theta } = 720 ^ { \circ }$$

A piano tuner uses a $512-\mathrm{Hz}$ tuning fork to tune a piano. He strikes the fork and hits a key on the piano and hears a beat frequency of $5 \mathrm{~Hz}$. He tightens the string of the piano, and repeats the procedure. Once again he hears a beat frequency of $5 \mathrm{~Hz}$. What happened?

Evaluate the algebraic expression for the given value or values of the variables. $x^{2}+7 x-4$; x=6

A 512-Hz tuning fork is struck and placed next to a tube with a movable piston, creating a tube with a variable length. The piston is slid down the pipe and resonance is reached when the piston is 115.50 cm from the open end. The next resonance is reached when the piston is 82.50 cm from the open end. (a) What is the speed of sound in the tube? (b) How far from the open end will the piston cause the next mode of resonance?

In a clarinet, the reed end of the instrument acts as a node and the first open hole acts as an antinode. Because the shape of the clarinet is nearly cylindrical, its harmonic series approximately follows that of a pipe closed at one end. What harmonic series is predominant in a clarinet?

A piano tuner strikes a tuning fork for the note middle C and creates a sound wave that can be modeled by y=1.5sin 524πt. where t is the time in seconds. What is the period p of this function?

A sector has an angle of $107.9^{\circ}$ and an arc length of 5.92 m. Find: a. its radius b. its area.

Define the following: a. bond length b. bond energy

What sound intensity level in dB is produced by earphones that create an intensity of

$$4.00 × 10^{-2} W/m^2?$$

To tune middle C on a piano, a tuner hits the key and at the same time sounds a 261-Hz tuning fork. If the tuner hears three beats per second, what are the possible frequencies of the piano key?

A cello string has a fundamental frequency of 65.40 Hz. What beat frequency is heard when this cello string is bowed at the same time as a violin string with frequency of 196.0 Hz? [Hint: The beats occur between the third harmonic of the cello string and the fundamental of the violin.]