Muchos de los estudiantes en la escuela de Ricardo han alcanzado muchos logros (achievements). Él se siente muy orgullosos de ellos y los compara con personas muy famosas. Escribe una frase completa con la información a continuación.

Raúl-tener-talento musical - un concertista

Even today, Arthur lives. For example, T. H. White's novel based on the Arthurian legends, The Once and Future King, became a bestseller and the basis of the long-running Broadway musical Camelot (1960). There are even computer games retelling Arthur's story. Why do you suppose the story of King Arthur has had lasting appeal?

The function given by $f(x)=k 2^{x / 12}$ can be used to determine the frequency, in cycles per second, of a musical note that is $x$ half-steps above a note with frequency $k^*.$

Show that the $\mathrm{C}$ sharp that is $4$ half-steps (a "major third") above concert A (see the previous exercise) has a frequency that is about $25 \%$ greater than that of concert $\mathrm{A}$.

A musical cent is a unit in a logarithmic scale of relative pitch or intervals. One octave is equal to 1200 cents. The formula

$$n = 1200 \left( \log _ { 2 } \frac { a } { b } \right)$$

can be used to determine the difference in cents between two notes with frequencies a and b. Find the interval in cents when the frequency changes from 443 Hertz (Hz) to 415 Hz.

Choose the answer in which the underlined word is used in the same way as it is used in these sentences from "The Leap." "Though he'd been thinking of moving..., he settled down and broadened his $\underline{practice}$ in this valley." F. It is her $\underline{practice}$ to walk every morning. G. Dara looks forward to band $\underline{practice}$. H. Good musicians $\underline{practice}$ every day. J. His law $\underline{practice}$ covers two counties.

A synthesizer is a keyboard instrument that can be made to sound like a flute, a trumpet, a piano—or any other musical instrument. Pressing a key sets the fundamental frequency of the note that is produced. Other settings that the player can adjust change the sound quality of the synthesizer without altering the fundamental frequency. How is this change accomplished? What is being adjusted?

For each of the following combinations of a fundamental musical tone and some of its overtones, make a computer plot of individual harmonics (all on the same axes) and then a plot of the sum. Note that the sum has the period of the fundamental $\cos 2 \pi t+\cos 4 \pi t+\frac{1}{2} \cos 6 \pi t$

For a concert, a circular stage is constructed and placed in the center so fans can completely surround the musicians. To record the sound of the crowd, two directional microphones are placed next to each other on the stage, one facing due east and the other facing due west. The patterns of the microphones can be represented by the polar equations $r=2.5+2.5 \cos \theta$ and $r=-2.5-2.5 \cos \theta.$ Identify the type of curve given by each polar equation.

As an example of diffraction by apertures of everyday dimensions, consider a doorway of width $1.0 \mathrm{~m}$. (a) Compute the angular position of the first minimum in the diffraction pattern of 600-nm light. (b) Repeat this calculation for a musical note of frequency $440 \mathrm{~Hz}$ (A above middle C). Take the speed of sound to be $343 \mathrm{~m} / \mathrm{s}$.

Fill in each blank with the type of artist who would make the statement.

1. "Escribo obras de teatro para que las presenten al público". BLANK
2. "Dirijo a las estrellas y las cámaras para hacer películas". BLANK
3. "Trabajo con la computadora o con papel y pluma". BLANK
4. "Paso todo el día practicando las notas con mi instrumento". BLANK
5. "Soy muy famosa y estoy en las mejores películas". BLANK
6. "Me gusta escribir en versos, con palabras que riman (rhyme)". BLANK
7. "Hago grandes figuras de piedra de tres dimensiones". BLANK
8. "Sigo la música artísticamente con mi cuerpo". BLANK
9. "Pienso en la música y luego la escribo" . BLANK
10. "Mi voz (voice) es mi instrumento". BLANK

3. Los (1.) de mi escuela organizaron un concurso de música. Su (2.) era obtener suficiente dinero para construir un nuevo teatro. Todos los padres de la escuela participaron. Vendieron refrescos y galletas. (3.) nuestra banda no llegó a los finales y nos (4.) de la competencia. Todos nos sentimos muy (5.).

In a reference book find information about two of the following:

a. the range of assigned frequencies of the FM broadcasting channels in the United States

b. the frequency ranges for VHF (very high frequency) and UHF (ultra high frequency) television

c. the frequencies of ultraviolet light and infrared light

d. the frequency of the musical pitch called "middle C ".

In the following sentence, underline the verb in parentheses that agrees in number with its subject. Example 1. Either Carmen or Miranda, both of whom have fine voices, ( $\underline{\text{is}}$, are ) a good choice for the leading role in the musical.

Both of the girls have sung in the choir for years, and each of them easily (sing, sings) the high notes.

Damon is a musician playing in a band. At the end of a song, he plucks a single guitar string. The string moves rapidly back and forth as shown in the figure below.

Which of these statements explains what happens to the kinetic energy of the moving string? F. The kinetic energy is changed into potential energy and stored. G. The kinetic energy is converted to sound energy and thermal energy. H. The kinetic energy is slowly destroyed until no energy remains. I. Some of the energy is converted to sound energy, but the rest is destroyed.