Se puede considerar al teorema trabajo–energía cinética como una segunda teoría de movimiento, paralela a las leyes de Newton, en cuanto que describe cómo las influencias externas afectan el movimiento de un objeto. En este problema, resuelva los incisos a) y b) por separado de los incisos c) y d), de modo que pueda comparar las predicciones de las dos teorías. En un cañón de rifle, una bala de 15.0 g acelera desde el reposo a una rapidez de 780 ms. a) Encuentre el trabajo que se invierte en la bala. b) Si supone que el cañón del rifle mide 72.0 cm de largo, encuentre la magnitud de la fuerza neta promedio que actúa sobre él, como ƩF = W/(∆r cos Ɵ). c) Encuentre la aceleración constante de una bala que parte del reposo y gana una rapidez de 780 ms en una distancia de 72.0 cm. d) Si supone ahora que la bala tiene 15.0 g de masa, encuentre la fuerza neta que actúa sobre ésta como ƩF = ma e) ¿Qué conclusión puede extraer al comparar sus resultado. Es necesario que para resolver este problema aplique el Teorema del Trabajo de acuerdo a los cambios de Energía Cinética y además demuestre de acuerdo a formula la aceleración constante del movimiento de la bala.

Answers

Answer 1

Answer:

Cinética como una segunda teoría de movimiento. happy cheating

Explanation:

Answer 2

The kinetic energy, net work,  average net force and constant acceleration are respectively;  4.56 kJ, 4.56 kJ, 6.34 kN and 422 km/s²

How to solve work energy theorem questions?

A)The kinetic energy of the bullet as it leaves the barrel is given by the formula;

k_i + ∑W = ¹/₂mv²

m = 15g = 0.015 kg

v = 780 m/s

initial kinetic energy; k_i = 0 m/s

Thus;

0 + ∑W = ¹/₂ * 0.015 * 780²

∑W = 4.56 kJ

B) The net work performed on the bullet is same as the kinet energy leaving the bullet. Thus;

Net work peformed = 4.56kJ. = 45600 J

C) The magnitude of the average net force that acted on the bullet while it was in the barrel is;

F = W/(Δr * cos θ)

F = 45600/(0.72 * cos 0)

F = 6.34 kN

D) a = (780² - 0²)/(2 * 0.72)

constant acceleration; a = 422 km/s²

Read more about Work Energy Theorem at;https://brainly.com/question/22236101

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Related Questions

Todos los domingos, nosotros __1____ (almorzar) en el restaurante de mi tio. Después, mis abuelos __2__ (escuhar) musica. Mi padre _3__ (mirar) la televisión y mi madre __4__ (leer) un libro. Mis hermanos __5_ (jugar) al fútbol y yo _6___ (escribir) correos electrónicos. Este domingo yo _7__ (querer) hacer otra cosa más divertida.Que __8_ (hacer) tu y tu familia los domingos?
-Alejandro
Fill in the blanks

Answers

1.almorzamos
2.escuchan
3.mira
4. Lee
5. Juegan
6. Escribo
7. Quiero
8. Haces

The correct conjugation in Present Tense of the verbs shown is:

Todos los domingos, nosotros almorzamos en el restaurante de mi tío. Después, mis abuelos escuchan música. Mi padre mira la televisión y mi madre lee un libro. Mis hermanos juegan al fútbol y yo escribo correos electrónicos. Este domingo yo quiero hacer otra cosa más divertida. ¿Qué hacen tu y tu familia los domingos?

Translation.

Every Sunday, we have lunch at my uncle's restaurant. Afterwards, my grandparents listen to music. My father watches television and my mother reads a book. My brothers play soccer and I write emails. This Sunday I want to do something more fun. What do you and your family do on Sundays?

Conjugation in Present Tense.

In Spanish, the conjugation of the verbs given in parenthesis, taking into account the personal pronouns is:

Yo: almuerzo / escucho / miro / leo / juego / escribo / quiero / hago.Tú: almuerzas / escuchas / miras / lees / juegas / escribes / quieres / haces.Usted: almuerza / escucha / mira / lee / juega / escribe / quiere / hace.Él: almuerza / escucha / mira / lee / juega / escribe / quiere / hace.Ella: almuerza / escucha / mira / lee / juega / escribe / quiere / hace.Ello: almuerza / escucha / mira / lee / juega / escribe / quiere / hace.Nosotros / Nosotras: almorzamos / escuchamos / miramos / leemos / jugamos / escribimos / queremos / hacemos.Ustedes: almuerzan / escuchan / miran / leen / juegan / escriben / quieren / hacen.Ellos / Ellas: almuerzan / escuchan / miran / leen / juegan / escriben / quieren / hacen.

Taking into account this as a guide, the conjugations selected are correct.

More information:

https://brainly.com/question/1214468?referrer=searchResults

1. Yo soy de El Salvador, ellos son de Honduras, Uds son de Nicaragua.​

Answers

Answer:

I am from El Salvador, they are from Honduras, they are from Nicaragua.

Explanation:

Just translated

Answer:

I am from El Salvador, they are from Honduras, you are from Nicaragua.

Explanation:

2. (03.01 LC)
Read and choose the correct option to complete the sentence.
No puedo respirar; la doctora me da
(1 point)
los primeros auxilios
los yesos
las gotas de ojos
los músculos

Answers

Answer:

The correct answer would be A

La doctora me da los primeros auxilios

Explanation:

Los primeros auxilios

Name four differences between schools in the United States and schools in Spanish-speaking countries

Answers

Answer:

US = better condition, better food, better teaching, spacious and clean

Spaish-speaking= less space, not very clean, not alot of supplies, Hope this Helps!

Also USA: lockers, officials sports teams, healthier food, cheerleaders and more students

5) Which sentence is written and capitalized correctly? Clean Verbatim.
a) it has got to be called incumbent.
b) it has gotta be called incumbent.
c) It has got to be called incumbent.
d) It has gotta be called incumbent.

Answers

Answer:

C- It has got to be called incumbent

Explanation:

Always capitalize the first letter in every sentence.

The sentence that is written and capitalized correctly is It has got to be called incumbent.

What is a sentence?

A sentence refer to group of words that have subject and predicate which has meaning and comprises of noun and verb.

Therefore, The sentence that is written and capitalized correctly is It has got to be called incumbent.

Learn more about sentence below.

https://brainly.com/question/25841954

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5. ¿Tu mejor amigo(a) y tú _____
(ir) de compras?
a. voy
b. vas
C. va
d. vamos
e. van

Answers

Answer:

Van

Tu mejor amigo(a) y tu van ir de compras

e. van
is the answer

Mis amigos tienen que __?__ muy rapido.​

Answers

Answer:

Salir

Explanation:

Mis amigos tienen que salir muy rápido

Fill in the blank with the Spanish word that best completes the following sentence.
If you are
you should go to the doctor.
enfermo
alto
aburrido
ocupado

Enfermo

Answers

Answer:

Enfermo (sick)

Explanation:

Si tu estás enfermo deberías ir al Doctor.

Answer: enfermo= (sick)

Review for a few minutes the material of this lesson as needed. When you are ready, drawing from the following building blocks, and the model sentences you have worked with in this lesson, string together at least ten statements.

Answers

Answer:

yo como mucho. 

yo vivo en mi casa.

yo trabajo mucho.

es imposible volar.

yo estoy contento.

yo como bien para luego reposar.

reposar es relajador.

Complete the sentences with the verb TENER conjugated.

Answers

1 tiene 2 tiene 3 tenemos 4 tengo 5 tienen

Answer:

1 tiene

2 tiene

3 tenemos

4 tengo

5 tienen

Explanation:

Pick the false cognates. School, Sand, general, Pregnant, Bother, natural, Letter, Family, History

Answers

I think the false cognates are school, sand, pregnant, bother and letter

Escribe la respuesta correcta usando el Pretérito o Imperfecto.
El joven
(mirar) a la chica desde la ventana.

Answers

Answer:mira

Explanation:

el joven MIRA a la chica desde la ventana : it’s in present tense

What are the empty boxes?

Answers

What do you have to do ?
click on them .................

4. De acuerdo con el cuento, podemos asumir que...
A. El joven tuvo problemas con la reja y se disparó en accidente
B. La realidad es incierta ya que no sabemos qué pasó
C. Es toda una fantasía, es sólo un sueño mas no la realidad
D. El padre y su hijo siguen felices después del susto

Answers

Answer:

b

Explanation:

tiene sentido solo que no podemos saber la respuesta  correcta ya que no pusiste el cuento a

Answer:

The answer is A

Explanation:

The father hears a shot, which he runs to find his son. When he gets there, his son was dead. The son had the gun in hand and shot himself in an accident.

what can Laura most likely say to Pablo at the end of the conversation?

Tengo sed.
Buen provecho.
La sobremesa.
Tengo miedo.

Answers

The answer is: Buen provecho

Answer:

The answer is Buen provecho.

Explanation:

I know this because i did the flvs test and got it right

SHORT ANSWER PART
1. Explain why the verb see Is used in #2 above, you may answer in English.
2. Explain why the verb estar is used in #6 above. You may answer in English.

Answers

The mentioned verbs are used in the blanks since they refer to the intrinsic situation of the mentioned subject.

Why are the verbs Ser and Estar used?

These verbs, which in English are usually represented by only one, usually refer to intrinsic situations of the subject, that is, even if they are actions, with the simple fact of being in a place or having a certain attitude they are fulfilled.

In the case of the verb "ser" that is used in the second blank space, this is used because an intrinsic quality of the event is going to be mentioned, in this case, that it originates in the nation of Cuba.

For its part, the verb "estar" conjugated for the first person is used to mention that the sender of the text, that is, the person who writes or pronounces it, at that moment has a reaction of their own attitude, which is happiness.

More information about Present Tense: https://brainly.com/question/28552295

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how many spainiards speak castillan Spanish

a.15%

b.27%

c.53%

d.74%​

Answers

Answer: I think its 15 percent

Explanation:

D. 74% of the population

Nosotros _____ con la maestra

Answers

Answer:

Hablamos, conversamos,peliamos,comimos,jugamos

Explanation:

hablamos(talk), jugamos(play), aprendemos (learn)

Decide whether the sentence is correct or incorrect as written.

Tengo una mochila amarillo.

corrrect
incorrect

Answers

Incorrecto

R/ Tengo una mochila amarilla

Answer:

incorrect

Explanation:

.

Select the correct answer.
Which verb best completes this sentence?
La gente debe
los recursos naturales.
OA.
contaminar
ОВ.
conservar
O c. desechar
OD. disponer
Reset
Next

Answers

Answer:

La gente debe conservar los recursos naturales.

Explanation:

"Conservar" it means to protect.

ANSWER:
Conservar

EXPLANATION:
It means to conserve or protect.

1. La niña es simpática, El niño es
2. Los hombres son delgados, Las mujeres son
3. La joven es alemana. El joven es|
e
4. El hijo es inteligente. La hija es
5. El muchacho es trabajador. La muchacha es

Answers

Answer:

1. the girl is nice, the boy is-

2. the men are thin, the women are-

3. the youngest is german. The youngest is-

4. the son is intelligent. the daughter is-

5. the man is a worker/employee. the woman is-

not gonna lie, a lot was cut off. i did what i could, hope i helped!

1. el niño es simpatico
2. las mujeres son delgadas
3. el joven es aleman
4. la hija es inteligente
5. la muchacha es trabajadora

cecilia me gusta_. _ mucho parquet sus padres trabajan pot

Answers

Answer:

Mucho

Explanation:

Cecilia me gusta mucho

Sus padres trabajan mucho.

Marta: Hola. Voy al supermercado porque no hay casi
[ Select ] en el refrigerador de nuestra habitación. ¿Quieres comer
[ Select ] especial esta noche?

Tomás: No, gracias. No quiero comer
[ Select ] porque comí mucho en el almuerzo.

Marta: Pero, ¿qué te pasa?

Tomás: [ Select ] Es que no tengo hambre. Tú sabes que
[ Select ] como tamta comida en el almuerzo.

Marta: ¡Tomás! Conocí a [ Select ]
en el supermercado cerca del balneario. Y
[ Select ] es una persona que te conoce a ti.

Tomás: ¿Sí? Debe de ser [ Select ] un amigo [ Select ] un compañero de trabajo. ¿Quién es?

Marta: Buno, no es [ Select ] un amigo [ Select ] un compañero tuyo. Se llama Lucía.

Tomás: ¿Lucía? No conozco a [ Select ] con ese nombre, ni tengo muchas amigas [ Select ]
.

Marta: ¿No? Pues, ella me dijo que fue tu novia.

Tomás: ¿Mi novia? ¡Marta, [ Select ] estás inventando cosas!

Marta: Yo [ Select ] invento historias sobre tu vida. ¿No recuerdas a Lucía? Era tu novia cuando ella tenía catorce años.

Tomás: Pues, sí, ahora recuerdo, era muy amable. Dile hola de mi parte.

Answers

Answer:

Marta: Hola. Voy al supermercado porque no hay casi  nada en el refrigerador de nuestra habitación. ¿Quieres comer  algo especial esta noche?

Tomás: No, gracias. No quiero comer  nada porque comí mucho en el almuerzo.

Marta: Pero, ¿Qué te pasa?

Tomás: Nada.  Es que no tengo hambre. Tú sabes que  nunca como tanta comida en el almuerzo.

Marta: ¡Tomás! Conocí a alguien en el supermercado cerca del balneario. Y  es una persona que te conoce a ti.

Tomás: ¿Sí? Debe de ser un amigo ó un compañero de trabajo. ¿Quién es?

Marta: Bueno, no es ni un amigo ni un compañero tuyo. Se llama Lucía.

Tomás: ¿Lucía? No conozco a nadie con ese nombre, ni tengo muchas amigas.

Marta: ¿No? Pues, ella me dijo que fue tu novia.

Tomás: ¿Mi novia? ¡Marta, ¡siempre estás inventando cosas!

Marta: Yo nunca invento historias sobre tu vida. ¿No recuerdas a Lucía? Era tu novia cuando ella tenía catorce años.

Tomás: Pues, sí, ahora recuerdo, era muy amable. Dile hola de mi parte

Which of frida kahlo ancestors did she connect with through her art and style of dress?

Answers

Answer:

One of the biggest influences on Frida's life and work was her mother's family, which was expressed in many ways, including her clothing. Therefore we observe that the “tehuana” costume as well as the European Frida dress are present in the portrait of her ancestors.

Hope this helps ; )

Que debemos hacer mis promos y yo en Miami?​

Answers

Answer:

¿Debemos hacer planes?    Si

¿Debemos hacer algo en la playa? Si

¿Debemos nadar?  Si

¿Debemos surfear?  Si

A) Si
B) Si
C) Si
D) Si

por que la comunidad decidio combinar las actividades agropecuarias con proyectos como el centro ecoturistico​

Answers

why the community decided to combine agricultural activities with projects such as the ecotourism center

what time is the last train to lisbon

Answers

Answer:

A que hora es el ultimo tren para Lisbon

Explanation:

These are examples of verbs in infinitive form in Spanish.

correr, computadora, me gusta, hablar, usar, leer
TRUE or FALSE

Answers

Answer:

I think it's false

Explanation:

Computadora (computer) is not a verb, it's a noun

I think the answer is False

PLEASE HELP!
Escoge la forma correcta del verbo recíproco para completar la frase. Choose the correct form of the reciprocal verb to complete the sentence.
Después de un partido de fútbol, los jugadores ________.

A. nos peleamos
B. me peleo
C. les pelean
D. se pelean

Answers

D) se pelean

D) they fight

Answer:

D. se pelean

Explanation:

D. se pelean

(they fight)

Help ASAP. Look at picture.​

Answers

Manzanas
Plátanos
Naranjas
Cerezas
Peras
Duraznos
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