The Freedom Riders. what impact this had on future laws?

Answers

Answer 1

lo siento no hablo inglés

Answer 2

Explanation:

The Freedom Riders faced violence in South Carolina, but in Alabama the reaction was much more severe.  One bus was firebombed and the Freedom Riders were beaten. Arriving in Birmingham, the second bus was similarly attacked and the passengers beaten. In both cases law enforcement was suspiciously late in responding, and there were suspicions of collusion in that late response. Although the original Riders were unable to find a bus line to carry them farther, a second group of 10 (I think), originating in Nashville renewed the effort.  The new Freedom Riders returned to Birmingham and, at the command of a U.S. Attorney General, secured a bus.  As they traveled to Montgomery, where, when local police failed to protect them, they were again beaten.

(This is all from my memory, so the information I have given may not be exact.  I hope this was what you are looking for as well)


Related Questions

You will have additional time to complete this assignment when you are ready to submit it go to the explore famous people submission

Answers

Kenton keince is a famous person and he was a movie director in the 1900s hope the helped

Which phrase means "a girl student" in Spanish?
A. Un estudiante
B. Una estudiante
C. Una chica
D. Un chico
SUI

Answers

The answer is B. Una estudiante means a girl student. Una is referring to a girl and estudiante is referring to a student.

Answer:

Una estudiante. Una is reffering a girl as un reffers a boy.

Explanation:

hope  it helps

"¿Te gusta practicar
deportes y escuchar música?
¡A mí me gusta mucho!
También me gusta jugar al
básquetbol. ¡Hasta luego!".

Answers

Answer:

Está bien. También me gustan mucho los deportes.

Tieneque n en comun el cuento la intermitencia de la muerte de (jose saramago) con el cuento de la muerta de (guy de maupassant) y lo absurdo y el suicidio de (albert camus) ?

Answers

Answer:

En las tres historias se tiene una visión muy diferente de la concepción histórica de la muerte

Explanation:

1. A major city in the country (for example, its capital city) is _______________________.

Answers

In this question, we will complete the sentence with what is requested in the utterance.

How is Spanish grammar?

Spanish requires to respect the accent, in the spelling rules, we have the acute accent, the grave accent, the circumflex accent and the umlaut. The challenge for anyone studying Spanish is to understand the grammatical accent or diacritic.

1. A major city in the country (for example, its capital city) es la capital del país, una metrópoli.

Learning Spanish takes practice, and that's great practice.

Aprender español requiere práctica, y eso es una gran práctica.

Learn more about Spanish in brainly.com/question/486110

#SPJ1

Translate text in saber tense

Translate text below


I choose to do my rough draft over smoke, fire and life safety.

My thoughts and concerns are people use fire in their daily activities and probably don’t realize that we do. Fire is used to cook, heat our water for bathing and fire does produce smoke.

Answers

Answer:

Escojo hacer mi borrador sobre el humo, el fuego y la seguridad de la vida.

Mis pensamientos y preocupaciones son que las personas usan el fuego en sus actividades diarias y probablemente no se den cuenta de que lo hacemos. El fuego se usa para cocinar, calentar el agua para bañarnos y el fuego produce humo.

Si no nos importara proteger a las tortugas, todas las especies ya en peligro de extinción.

Answers

Answer:

Estarían.

Explanation:

Si no no importara proteger a las tortugas, todas las especies ya estarían en peligro de extinción.

"Estarian" is the proper word/answer that would fit

What is the spanish folk malady a person may experience if they brag about their accomplishments?

Answers

Answer:

Envidia

Explanation:

fill in the blanks with the correct answer
In parentheses

Answers

4. la camiseta
5. el suéter
6. el traje de baño
7. los calcetines

A hotel manager is giving some advice to new members of the housekeeping staff. Complete his statements with the affirmative (ustedes) command of the verb in parentheses and the appropriate direct object pronoun. Follow the model.
Modelo
No hagan la cama primero; háganla (hacer) después de limpiar el baño.
1. No pongan toallas nuevas todos los días;

enter answer
(poner) solamente si los huéspedes las piden.
2. No pasen la aspiradora antes de sacudir;

your answer pásenla
pásenla
(pasar) al final.
3. No abran la puerta de inmediato;

enter answer
(abrir) después de llamar para saber si hay alguien.
4. No dejen los platos sucios del servicio a la habitación;

enter answer
(llevarse) con ustedes.
5. No limpien los baños con la aspiradora;

enter answer
(limpiar) con un trapeador.
6. No muevan las pertenencias (belongings) de los huéspedes;

enter answer
(dejar) donde están.

Answers

Answer: 1. Ponganlas

2. pasenla

3. abran

4. llevenselos

5. limpien

6. dejenlas

Por y para: Complete the following sentences with either por or para.
5. ¿Cuánto pagaste __________ esos zapatos?
6. La tarea es __________ mañana.

Answers

Answer: 5.por

6.para

Explanation:

:)

Answer:

Explanation:

5.- ¿Cuánto pagaste por esos zapatos?

6.- La tarea es para mañana.

Alfonso gets sick on the last day of vacation and his friend Javier is going to help him. To find out what Alfonso asks of Javier, use the elements below to form commands using indirect and direct object pronouns. ¡OJO!: When you use two pronouns with the command, you have to use a written accent over the stressed vowel.

Modelo:
Tengo sed y necesito un vaso de agua. (traer / el vaso de agua / a mí)
Tráemelo, por favor.
1. A mi hermana todavía no le compré su regalo. (comprar / el regalo / a mi hermana)

enter answer
, por favor.
2. Tengo que preparar mis maletas, pero no puedo. (preparar / las maletas / a mí)

enter answer
, por favor.
3. Tengo que mandarles la tarjeta postal a mis padres, pero no puedo. (mandar / la tarjeta postal / a ellos)

enter answer
, por favor.
4. Quiero comer fruta. (servir / la fruta / a mí)

enter answer
, por favor.
5. Necesito una aspirina. (dar / la aspirina / a mí)

enter answer
, por favor.
6. Necesitamos reconfirmar los vuelos. (reconfirmar / los vuelos / a nosotros)

enter answer
, por favor.

Answers

The words that complete these sentences are compraselo, preparamelas, mandasela, sirvemela, damela, reconfirmalos.

How to complete these sentences?

To complete these sentences you will need to use indirect or direct object pronouns that replace the object in the sentences. The basic pattern of these pronouns are:

Singular + feminine =laSingular + masculine = loPlural + feminine = lasPlural + masculine = los

Yo = meTu = teEl/ella/ ellos/ellas = seNostros = no

Moreover, to have a complete sentence you need to add these words at the end of verbs. Here is an example:

Ella necesita que le compren unos libros = Compraselos (se = ella/ los = masculino / plural)

What words complete the sentence?

Based on this pattern the words are:

compraselopreparamelasmandaselasirvemeladamelareconfirmalos

Learn more about Spanish verbs in: https://brainly.com/question/11727612

#SPJ1

Si un negro musical tiene 4 semicocheras, cuantos semicorcheras hay en una rodonda musical?

Answers

Una redonda equivale a diesciseis semicorcheas (16).

Cuántas semicorcheas hay en una redonda?

La redonda es una nota musical que equivale a una duración en tiempo de cuatro.

Una redonda entonces equivale a cuatro negras, por lo tanto la redonda equivale a 16 semicorcheas.

Aprenda más sobre notas musicales en: https://brainly.com/question/2316789

#SPJ1

¿En qué situación se deben usar los elementos de protección personal? (hablo de los EPP, son elementos de seguridad para trabajar)

Answers

Los Elementos de Protección Personal (EPP) se deben usar en los siguientes casos:

Siempre que se realicen actividades de riesgo. Los EPP no eliminan los riegos pero minimizan o evitan los daños físicos que pueden llegar a sufrir los trabajadores en estas actividades de riesgo.

¿Qué son los Elementos de Protección Personal (EPP)?

Los Elementos de Protección Personal (EPP) son herramientas que deben utilizar los trabajadores cuando realizan tareas de riesgo.

Por ejemplo, algunos elementos de protección son:

cascosprotectores faciales y ocularesprotecciones auditivasindumentarias específicaselementos de seguridad como dispositivos anticaídas o arneses

Puedes chequear más información sobre elementos de seguridad laboral en el siguiente link https://brainly.com/question/13502039

#SPJ1

Hello! I need help with translating! So, I know this says “We invited our kids to a youth party.” but, I feel like I am mistranslating.

Answers

The answer is ::

"We invite the boys to a youth party."

You need a correction : our kids (wrong)

correct one is. : the boys(right)

Explaination word by word:

Nosotros : We

invitamos : invite

los : the

chicos : boys

a : to

una : a

fiesta : party

de : of

jóvenes : youth

Join the words : We invite the boys to a party of youth

or we can write it as : We invite the boys to a youth party.

hope you understand

por favor alguien ayudeme con esta historieta es urgente

Answers

In this question we will write the dialogues of the conversations in Spanish.

How to study vocabulary in Spanish?

A very productive practice for learning new words is to immediately look up the meaning of words read and not understood in the Spanish dictionary. Write down the meaning on a separate sheet of paper, reread the entire sentence and identify the context in which it was used.

¿Le gusta el pescado?¿que esta pensando?amor, espérame, vuelvoNecesito atrapar un pez grande para ella, pero no puedo.la pesca es como el ajedrezaprendes a dar en el blancoy haciendo grandes discursoste amo de todas maneras

Learning Spanish takes practice, and that's great practice.

Aprender español requiere práctica, y eso es una gran práctica.

Learn more about Spanish in brainly.com/question/486110

#SPJ1

can someone please give me the correct answers ASAP

Answers

The 2nd one is “van a “ meaning “ they are “
the answer is "van a" for the second one

Read and choose the right answer.

¡Hola, amigos! Mi nombre es Elena. Yo soy de Ecuador, pero vivo en Miami. Tengo dieciséis años. Soy alta y bonita. Tengo el pelo rubio y tengo los ojos verdes.
Chin, tú eres mi amiga. Tú tienes quince años y eres de Perú. Tú vives en Tallahassee. Tú eres baja y sociable. Eres pelirroja y tienes los ojos verdes.

Where does Chin live?

Miami
Perú
Tallahassee
Ecuador

Answers

Answer:

Tallahassee

Explanation:

Tu vives en Tallahassee translates to you live in Tallahassee.

Answer: Tallahassee

Explanation: I took the test

#tonk

Irene todavía no 1 of 2 lista para salir. Ricardo 2 of 2 el chico más listo de la clase.

Answers

Answer:

Irene todavía no está lista para salir. Ricardo es el chico más listo de la clase.

Explanation:

Esta es la forma correcta de escribirlo.

Spanish: Irene todavía no está lista para salir. Ricardo es el chico más listo de la clase.

English: Irene is still not ready to leave. Ricardo is the smartest boy in the class.

How to answer the question

Answer: The translation provides two separate statements:

1. Irene todavía no está lista para salir. (Irene is still not ready to leave.)

This sentence indicates that Irene is not yet prepared or organized enough to depart from a certain location or engage in an activity.

2. Ricardo es el chico más listo de la clase. (Ricardo is the smartest boy in the class.)

This sentence highlights Ricardo's exceptional intelligence and knowledge, indicating that he is the most intelligent among his male classmates.

The translations convey the intended meaning of the original statements in English.

Read more on Spanish here https://brainly.com/question/24126663

#SPJ6

Para habilitar el pago automático de una tarjeta de crédito a los requisitos del mes.

Answers

Answer: espere como asi

Explanation: no le entiendo

despues de mid classes siempre como una

Answers

manzana! u have any options put up

Is this the correct use of imperative form?

Answers

Answer:

si

Explanation:

Preterite or imperfect? Need help fast!!

Would I use "nos divertimos" or "nos divertíamos" in the following excerpt? (preterite or imperfect of divertirse?)
"Cuando yo era pequeña, siempre jugaba con mi prima Belén. Las dos nos ______ (divertir) mucho juntas."

Answers

the answer is divertimos
the reason is because nos represents the nosotros form

Answer:

Divertíamos

Explanation:

Imperfect tense does not usually mention an exact or well-defined date, but rather it is regularly generalized, such as saying "in my childhood" or "in the past," or simply omitted.This sentence does not give a specific time frame it says "when I was a kid" so you use imperfect tense.

Change each negative formal command to an affirmative formal command.
Modelo
No le pregunten.
Pregúntenle.
1. No me lo digan.

enter answer
.
2. No la visiten.

enter answer
.
3. No se acuesten.

enter answer
.
4. No lo facturen.

enter answer
.
5. No se los muestren.

enter answer
.
6. No se vistan.

enter answer
.

Answers

Answer:

Explanation:

1.  dime

2.  visitarla

3. acostarse

4. facturalo (the u has an acsent)

5. Mostrarlos

Answer:

DíganmeloVisítenlaAcuéstenseFactúrenloMuéstrenselosVístanse.

Explanation:

Hi! This is due soon :(, and help would be very appreciated:

Instruct someone you don't know (using the singular formal
command form) how to make a quesadilla. Include a list of ingredients and use the formal
singular imperative form (usted command) to instruct someone you don't know
how to make a quesadilla.

Answers

Answer:

Explanation:

hi, I am a native spanish speaker, and english, so here is the answer.

primero, vas a necesitar una tortilla, maiz o harina, queso, y hamon.

pon la tortilla a cocer mientras preparas el hamon y el queso, cuando la tortilla se ha cocido suficientemente, agregue el queso y el hamon hasta que el queso de derrita, y por fin tu quesadilla esta lista!

sorry but I can't put accents, my keyboard doesn't let me

Cacharrerosdelaweb. Com otro de los objetivos con este tipo de conexiones entre máquinas y humanos es permitir que podamos instruir de manera telepatica casi cualquier dispositivo tecnologico tambien poder procesar datos con el portatil.

Answers

Este texto se refiere al dispositivo que se encuentra creando una Red Social que pueda leer y transcribir los pensamientos en un dispositivo portátil.

¿De qué se trata el Dispositivo de Transcripción de Pensamientos?

Este dispositivo, el cual está siendo desarrollado por una importante empresa basada en su red social, se encargará de transmitir telepáticamente los pensamientos de una persona y transcribirlos en un medio electrónico en forma de documento.

Esto potenciará el trabajo de las personas puesto que acelerará el proceso de transcripción y agilizará el procesamiento de datos, puesto que podrían ser analizadas en muy poco tiempo por una computadora.

Si quieres aprender un poco más sobre Tecnología, puedes visitar el siguiente enlace: https://brainly.com/question/27363107

#SPJ1

Escribe, en orden conologico, cuatro de los sucesos que se narran en el texto "Recolectora de basuras"
Aqui les dejo link del texto: https://www.soho.co/recolectora-de-basuras/2375/

Answers

Algunos sucesos del texto son: Se puso el uniforme a las 6 de la tarde, a las 8 de la noche se cambio de camión, la protagonista acaba su turno a las 9 de la noche en relleno, y  el turno de Alexander y Alberto terminaba a las 2 de la mañana.

¿Cómo organizar los sucesos en orden cronológico?

Para organizar los sucesos en orden cronológico debemos organizarlos de tal manera que vayan del más antiguo al más reciente o viceversa. En este caso los vamos a organizar del mas antiguo al más reciente. De acuerdo con lo anterior, quedarían así:

Se puso el uniforme a las 6 de la tarde.A las 8 de la noche se cambio de camión.La protagonista acaba su turno a las 9 de la noche en relleno.El turno de Alexander y Alberto terminaba a las 2 de la mañana.

Aprenda más sobre cronología en: https://brainly.com/question/17451618

#SPJ1

When and why do you change the i to a y when it is between two vowels?
For example, in the preterite tense, why is "conseguir" conjugated in the 3rd person plural to "consiguieron," whereas "construir" is conjugated in the same tense to "construyeron?" If somebody could explain why the I does not change in some preterite verbs (like seguir as well) that'd be great, thank you!

Answers

The change of y for i is due to the fact that verbs ending in "uir" require this change, except those that have g before said combination.

How to identify the correct change with verbs in Preterite Tense?

The verbs that have the ending "uir" in Spanish, in some of their conjugations change the i at the end for a y, for example the verbs "construir, contribuir, sustituir":

Yo: construí / contribuí / sustituíTú: construiste / contribuiste / sustituisteUsted: construyó / contribuyó / sustituyóEl: construyó / contribuyó / sustituyóElla: construyó / contribuyó / sustituyóEllo: construyó / contribuyó / sustituyóNosotros / Nosotras: construimos / contribuimos / sustituimosUstedes: construyeron / contribuyeron / sustituyeronEllos / Ellas: construyeron / contribuyeron / sustituyeron

However, this case does not apply when the ending is "guir," which despite having the same letters in the ending, the combination "gu" is not usually separated, as in the case of "conseguir, distinguir:"

Yo: consigo / distingoTú: consigues / distinguesUsted: consigue / distingueÉl: consigue / distingueElla: consigue / distingueEllo: consigue / distingueNosotros / Nosotras: conseguimos / distinguimosUstedes: consiguen / distinguenEllos / Ellas: consiguen / distinguen

Therefore, you must apply the rule of changing i to y, whenever the ending is "uir," with the exception of those that contain "g" before said combination.

If you want to learn more about Preterite Tense in Spanish, you can visit the following link: https://brainly.com/question/27913834

#SPJ1

How would you like to travel to a place where spanish is spoken? this is your chance to plan the perfect vacation!

if there is a local tourism office available to you, you can visit it for information. alternatively, you can use a library or the internet to plan your trip.

your plan should be for at least one week. you must track how much money it will cost to travel, stay in the places you choose, and eat.

record a description of your travel and expense plan. be sure to include a list of places you want to see and special activities you want to do. have fun! your response should consist of at least 6-8 complete spanish sentences.

Answers

In this question, we are going to write a description of a trip to the beautiful country of Perú

viaje a Perú

el primer dia llegaremos a Lima la capital del Perú alli comeremos comidas tipicas todo el dia gastaremos 300 dólares en hospedaje y alimentacion

el segundo dia tomaremos un avion a Cusco, el avion, el hospedaje y la alimentacion seran 400 dolares

tercer y cuarto dia caminaremos de Cusco a Macchu picho, donde el costo del equipo es de 1000 dólares y la alimentacion,

el quinto dia iremos a Macchu picho y nos quedaremos en Aguas Calientes el costo es de 500 dolares

el sexto día volveremos a casa.

How to study vocabulary in Spanish?

A very productive practice for learning new words is to immediately look up the meaning of words read and not understood in the Spanish dictionary. Write down the meaning on a separate sheet of paper, reread the entire sentence and identify the context in which it was used.

Learning Spanish takes practice, and that's great practice.

Aprender español requiere práctica, y eso es una gran práctica.

Learn more about Spanish in brainly.com/question/486110

#SPJ1

Rewrite each sentence using the appropriate form of "ser" and the correct stressed possessive pronoun.

Model:

- Los pantalones son de Pepe.

- Son suyos.

1. La falda es de Julia.

2. Los impermeables son de ustedes.

3. Son tus medias.

4. La cartera es de nosostros.

5. Son mis pantalones cortos.

Answers

The correct Possessive Pronoun in each case and the correct conjugation of the verb is:

Es suyaSon suyosSon tuyasEs nuestraSon míos

What are the Possessive Pronouns in Spanish?

Possessive pronouns are one of the ways with which you can identify who owns an object (directly). These in Spanish are:

Yo: mío/mía/míos/mías.Tú: tuyo/tuya/tuyos/tuyas.Usted: suyo/suya/suyos/suyas.Él: suyo/suya/suyos/suyas.Ella: suyo/suya/suyos/suyas.Ello: suyo/suya/suyos/suyas.Nosotros: nuestro/nuestra/nuestros/nuestras.Ustedes: suyo/suya/suyos/suyas.Ellos: suyo/suya/suyos/suyas.

To identify the appropriate possessive pronoun in each sentence, you must identify the owner in the sentence, replace it with the appropriate personal pronoun, and finally use the corresponding possessive pronoun with the help of the guide above.

If you want to learn more about Possessive Pronouns in Spanish, you can visit the following link: https://brainly.com/question/6591228

#SPJ1

Other Questions
A hollow conducting sphere has an internal radius of r1 = 1. 9 cm and an external radius of r2 = 3. 1 cm. The sphere has a net charge of Q = 1. 9 nC. a) What is the magnitude of the electric field in the cavity at the center of the sphere, in newtons per coulomb? b) What is the magnitude of the field, in newtons per coulomb, inside the conductor, when r1 < r < r2? c) What is the magnitude of the field, in newtons per coulomb, at a distance r = 5. 9 m away from the center of the sphere? a sample of a noble gas has a mass of 980 mg. its volume is 0.270 l at a temperature of 88 c and a pressure of 975 mmhg. identify the gas by answering with the symbol. Air is compressed into a tank of volume 10 m 3. The pressure is 7 X 10 5 N/m 2 gage and the temperature is 20C. Find the mass of air in the tank. If the temperature of the compressed air is raised to 40C, what is the gage pressure of air in the tank in N/m 2 in kg f/cm 2 for an analog to digital converter, find the converter's sampling frequency with a nyquist rate of 2mhz when an automobile battery with an emf of 12.6 v is connected to a resistor of resistance 25.0 , the current in the circuit is 0.480 a . find the potential difference across the resistor. enough of a monoprotic weak acid is dissolved in water to produce a 0.0106 m solution. the ph of the resulting solution is 2.40. calculate the pa for the acid. Consider optical absorption. Mark the correct statement(s). Absorption can only occur if the photon energy is larger than the energy gap of a semiconductor. Absorption can only occur if the photon energy is less than the energy gap of a semiconductor. Absorption is strongest if the photon energy matches the energy difference between the centers of the valence and conduction band. Absorption is strongest if the photon energy matches the energy difference between the band edges of valence and conduction band. A stock has an expected return of 12. 9 percent and a beta of 1. 30, and the expected return on the market is 11. 80 percent. What must the risk-free rate be? (do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. ) How does rigid specifications enable flexibility and creativity in Lean?a)By ensuring only the most skilled workers provide input to improvement ideasb)By reducing variability introduced by individual workers' improvement ideasc)By centrally controlling leading practices to provide top-down consistencyd)By establishing a controlled baseline from which to design and evaluate improvements If the real GDP and nominal GDP are $200 billion and $620 billion respectively, what is the value of the GDP deflator? a) 322. b) 320. c) 312. d) 330. e) 310. A student forgot to record the actual molar concentration of the HCl so used the 0.05 M value given in the procedure to perform the calculations and arrived at a molar solubility of 0.0112 M. If the acid was actually 0.045 M: a. What is the correct molar solubility? b. What is the student's percent error? 407 13 1.25 0.75 0.751.25 Consider the discrete dynamical system determined bl the equation xk+1-AXk, k-0. 1, 2, (a) Classify the origin as an attractor, repeller or saddle point of this dynamical system NOTE: No need to show all steps when finding eigenvalues and eigenvectors of A (b) What are the directions of the greatest repulsion and of the greatest attraction? Justify your answer. HINT: These directions give straight line trajectories! Consider a system that uses pure demand paging. a. When a process first starts execution, how would you characterize the page-fault rate? b. Once the working set for a process is loaded into memory, how would you characterize the page-fault rate? c. Assume that a process changes its locality and the size of the new working set is too large to be stored in available free memory. Identify some options system designers could choose from to handle this situation. If a sheet containing a single slit is heated (without damaging it) and therefore expands, what happens to the angular location of the first-order diffraction minimum?It moves toward the centerline.It moves away from the centerline.It doesn't change. A 0.75kg baseball is hit by a bat when making contact for a time of 0.35 seconds. If the change in velocity is calculated to be 47 m/s, what is the force provided by the bat? in the case of reflection from a planar surface, use fermat's principle to prove that the incident and reflected rays share a common plane with the normal to the surface, i.e. the plane of incidence. In pumpkins, white fruit (W) is dominant to orange fruit (w). The Punnett square shows a cross between a homozygous dominant plant and a homozygous recessive plant.W Ww Ww Ww w Ww Ww If the resulting offspring are self-pollinated, what percentage of the offspring of that cross will be white?A. 0B. 25C. 50D. 75 a solution is made by dissolving 22.3 g of licho in 500.0 ml of water. does L+ have any acidic or basic properties?A. it has no acidic or basic propertiesB. Yes, it is basic because LiOH is a strong base.C. Yes, it is acidic as it is the conjugate of a strong base.D. Yes, it is a cation and therefore acidic Explain why the line corresponding to ninitial 7 was not visible in the emission spectrum for hydrogen. Suppose the electron in a hydrogen atom moves from n 2 to 1. In which region of the electromagnetic spectrum would you expect the light from this emission to appear? Provide justification for your answer! Show that for the diamond struc- ture the Fourier component Uc of the crystal potential seen by an electron is cqual to zero for G = 2A, where A is a basis vector in the reciprocal lattice referred to the conventional cubic cell. (b) Show that in the usual first-order approximation to the solutions of the wave equation in a periodic lattice the energy gap vanishes at the zone boundary plane nbrmal to the end of the vector A.