1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kay [80]
2 years ago
8

Which statement best describes the two reactions?

Physics
2 answers:
barxatty [35]2 years ago
4 0

Answer:

Reaction B involves a greater change and a change in element identity.

Explanation:

Oksana_A [137]2 years ago
3 0

Answer:

b

Explanation:

i guessed annd got it right

You might be interested in
An airplane flies Minneapolis too Chicago in 74 minutes. If it is 572,000 meters from Minneapolis too Chicago what is the planes
miv72 [106K]

Answer:

128.8m/s

Explanation:

74 × 60 = 4440 convert minutes to seconds

572000/4440 = 128.82882... speed=distance/time

4 0
3 years ago
A 1.5-mole sample of an ideal gas is gently cooled at constant temperature 320 K. It contracts
Alona [7]

Answer:

V₂ = 14.07 L

Explanation:

As this gas is cooled at constant temperature of 320 K, this means that we are on an isothermal process, and according to the 1st law of thermodynamics:

Q = W   (1)

And as the temperature is constant, we can use the following expression to calculate the Work done:

W = nRT ln(V₁/V₂)   (2)

However, as Q = W, we can replace heat into the above expression and then solve for V₂:

Q = nRT ln(V₁/V₂)

Replacing we have:

1200 = (1.5 * 8.314 * 320) ln(19/V₂)

1200 = 39907.2 ln(19/V₂)

ln(19/V₂) = 1200/3990.72

ln(19/V₂) = 0.3007

19/V₂ = e^(0.3007)

V₂ = 19 / e^(0.3007)

<h2>V₂ = 14.07 L</h2>

Hope this helps

6 0
3 years ago
se lanza un cuerpo desde el origen con velocidad horizontal de 40 m/s, y con un ángulo de 60º. calcular la máxima altura y el al
EastWind [94]

Answer:

1. h = 244.8 m    

2. x = 564.8 m  

Explanation:

1. La altura máxima se puede calcular usando la siguiente ecuación:

v_{f}^{2} = v_{0}^{2} - 2gh     (1)                        

Where:

v_{f_{y}}: es la velocidad final = 0 (en la altura máxima)  

v_{0_{y}}: es la velocidad inicial horizontal en "y"

g: es la gravedad = 9.81 m/s²          

h: es la altura máxima =?

La velocidad incial en "y" se puede calcular de la siguiente manera:

tan(\theta) = \frac{v_{0_{y}}}{v_{0_{x}}}

v_{0_{y}} = tan(60)*40 m/s = 69.3 m/s                    

Resolviendo la ecuación (1) para "h" tenemos:

h = \frac{v_{0_{y}}^{2}}{2g} = \frac{(69.3 m/s)^{2}}{2*9.81 m/s^{2}} = 244.8 m          

2. Para calcular el alcance horizontal podemos usar la ecuación:

x = v_{x}*t

Primero debemos encontrar el tiempo cuando la altura es máxima (v_{f_{y}} = 0).

v_{f_{y}} = v_{0_{y}} - gt    

t = \frac{v_{0_{y}}}{g} = \frac{69.3 m/s}{9.81 m/s^{2}} = 7.06 s      

Ahora, como el tiempo de subida es el mismo que el tiempo de bajada, el tiempo máximo es:

t_{m} = 2*7.06 s = 14.12 s          

Finalmente, el alcance horizontal es:

x = 40 m/s*14.12 s = 564.8 m                                                            

Espero que te sea de utilidad!

7 0
3 years ago
Interstellar dust causes stars to appear bluer than they actually are
ArbitrLikvidat [17]
Im not sure what your question is but I will just elaborate. Interstellar dust absorbs more red light than blue light, making stars appear bluer than their true color.
4 0
3 years ago
What is most likely the author’s motive for writing the article?
Salsk061 [2.6K]

Answer: Option (d) is the correct answer.

Explanation:

Article's help people know about the advantages or disadvantages of the product or topic for which it is written.

Basically an article provides an overall scenario about a situation or thing so that readers can decide themselves whether they are in favor or against the thing on which article has been written.

Therefore, we can conclude that out of the given options, to get the reader to understand the two types of signals is most likely the author’s motive for writing the article.

4 0
3 years ago
Read 2 more answers
Other questions:
  • How are igneous rocks formed?<br> step by step please.
    5·1 answer
  • The magnetic field inside a 5.0-cm-diameter solenoid is 2.0 T and decreasing at 5.00 T/s. Part A) What is the electric field str
    11·1 answer
  • List five items that you think would generate an electric field in your house
    14·1 answer
  • Urgent please physic
    13·1 answer
  • 600-nm light is incident on a diffraction grating with a ruling separation of 1.7 × 10-6 m. The second order line occurs at a di
    10·1 answer
  • A car on a Ferris wheel has an angular displacement of π 4 rad, which corresponds to an arc length of 28.2 m. What is the Ferris
    11·1 answer
  • Is a step in the scientific method. The step that follows this step involves forming
    14·1 answer
  • Which component of a galaxy is found in the space between the stars and gives the appearance of bright, colorful clouds?(2 point
    9·2 answers
  • Please help<br>What is the angle of the reflected ray in the diagram above?​
    11·1 answer
  • Part 2 "Tug-of-War"
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!