I need help
With this

I Need Help With This

Answers

Answer 1

Answer:

dfvgxbcjnhmv,kbl

Explanation:

fvgbnhjmk


Related Questions

This graph shows how the reaction rate of a chemical reaction changed as concentration of reactant changed. Which sentence best describes how the reaction rate changed.​

Answers

Answer:

A

Explanation:

The Reaction rate is going down which is why its at 0 And the concetration line is going up which means increasing,

Which explanation describes why a balloon will stick to a wall?
Opposites attract.
Like repels like.

Answers

Opposites attract is the answer

Answer: A is the correct answer :)

Explanation:

Question 4
The diagram represents the motion of a sound wave. The distance between points A and C is 9 meters (m), and it initially takes the wave 3 seconds (s) to travel.
What will be the wavelength of the sound wave if the velocity of the wave remains constant but the pitch is tripled?

A 3 meters
B 6 meters
с 9 meters
D 18 meters

Answers

Answer:A

Explanation:

The wavelength of the sound wave will be 3 meters.

What is wavelength?

The wavelength of any wave is defined as the distance between two max adjacent amplitudes, or the distance between two successive troughs or crest.

Now it is given that:

Distance =9 meters

time = 3 seconds

pitch=1/3 seconds

The velocity of  the sound will be

[tex]V=\dfrac{d}{t}=\dfrac{9}{3}=3\ \frac{m}{s}[/tex]

Now from the question the wavelength of the sound wave if the velocity of the wave remains constant but the pitch is tripled

so  [tex]f=3\times \dfrac{1}{3}=1 herts[/tex]

Now the velocity of the sound will be

[tex]v=f\times \lambda[/tex]

[tex]\lambda=\dfrac{v}{f}=\dfrac{3}{1}=3\ m[/tex]

Thus the wavelength of the sound wave will be 3 meters.

To know more about wavelength, follow

https://brainly.com/question/10728818

As the period of a wave increases, the frequency increases.
Please select the best answer from the choices provided
T/F

Answers

See the picture below

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hshdhdhdhdh

whdhdhdhdj

shdhdhdhjd

dbdhdhdhdh

rjrjdjrjjdjr

dbdjdjdjdjd

ndjdjdhdhd

How do the nuclei of covalently bonded atoms help keep the bond together?

Neutral particles in the nucleus provide enough mass that the force of gravity holds the atoms together.
Neutral particles in the nucleus can become positive or negative in order to balance the charges.
Positive particles in the nucleus change into negative particles that enter electron shells.
Positive particles in the nucleus are attracted to shared electrons, so the atoms stay close together.

Answers

Answer: D.

Explanation:

Answer: The answer is D

Explanation: I got it right on my test

All mutations are favorable and increase the ability for the
organism's offspring to survive.
TRUE
FALSE

Answers

false sometimes you get a bad mutation

Question 2 (5 points)
(04.02 LC)
Which of the following energy conversions takes place in plants during photosynthesis? (5 points)
a
Chemical energy to light energy
b
Light energy to electrical energy
Ο Ο Ο
Electrical energy to light energy
Light energy to chemical energy

Answers

Answer:

Fossil fuels store energy from the sun as

Answer:

light to chemichal

Explanation:

Genes consist of portions of ______.

Answers

Answer: Genes consist of portions of proteins

-1
9
5 points
An engine does 1421000 J of work to lift a beam 145 meters. How much force was exerted to lift the beam.
1566N
9800N
20445 N
50000N

Answers

Answer:

9800 N

Explanation:

applying,

W = Fd.................. Equation 1

Where W = work done by the engine, F = Force exterted to lift the beam, d = distance.

make F the subject of the equation

F = W/d............... Equation 2

From the question,

Given: W = 1421000 J, d = 145 meters.

Substitute these values into equation 2

F = 1421000/145

F = 9800 N

.
Look at the circuit diagram. What type of circuit is shown?

closed parallel circuit

closed series circuit

open parallel circuit

open series circuit

Answers

Closed series circuit.

6. Which of the following statements is true for displacement ?

a. It cannot be zero

b. Its magnitude is more than the distance covered by the object.​

Answers

Both are false..........

NEED HELP What is the energy transformation process when using a battery powered flashlight?Single choice.
(2 Points)

Electrical-electromagnetic-thermal

Electrical -light-thermal

Chemical-electrical-thermal-light

Chemical-thermal-light

Answers

Answer:

Chemical-thermal-lightChemical-electrical-thermal-light

hope it is helpful to you

Sound waves are blank waves

A) Longitudinal
B) mechanical
C) compression
D) all if the above

Answers

B.) Mechanical

Reason: These particle-to-particle, mechanical vibrations of sound conductance qualify sound waves as mechanical waves. Sound energy, or energy associated with the vibrations created by a vibrating source, requires a medium to travel, which makes sound energy a mechanical wave
i’m pretty sure the correct answer is D)

Amos runs up a flight of stairs with a. total change in energy E. Vanessa exerts double the amount of energy in twice the time. How does Amos power output, Pa compare with Vanessa's power output, Pv?

Answers

Answer: Pa=Pv

Explanation:

Khan academy

Amos runs up a flight of stairs with a total change in energy ΔEA. Vanessa exerts double the amount of energy in twice the time.

How does Amos’s power output, PA, compare with Vanessa’s power output, Pv?

Answer: Pa=Pv

Science Check: Light Waves and Their Behavior 4 of 104 of 10 Items Question POSSIBLE POINTS: 1 Why is a light wave not considered a matter wave? A light wave is visible to humans. A light wave is visible to humans. A light wave moves faster than most waves. A light wave moves faster than most waves. A light wave does not have a wave length. A light wave does not have a wave length. A light wave travels through the vacuum of space. A light wave travels through the vacuum of space.

Answers

Answer:

A light wave travels through the vacuum of space

Explanation:

A light wave cannot be a matter wave because a matter wave is made up of

atoms while light wave is a form of radiation (electromagnetic). A matter wave requires a medium to travel while a light wave do not require medium to travel. Since light wave is a form of radiation, light can travel in vacuum.

Hence, the correct answer is A light wave travels through the vacuum of space

Para fabricar la bicicleta de un niño pequeño se tiene en cuenta que la fuerza que puede desarrollar es menor que la de un adulto y que no sabe cambiar de desarrollo. Por ello, se fabrica con un solo plato y un solo piñón de desarrollo muy pequeño. El plato es de 28 dientes y el radio de la rueda mide 20 cm. Si queremos que el desarrollo sea de 1,4 calcula: - El número de dientes que debe tener el piñón de la bicicleta. - Cuántos metros avanza la bicicleta por cada pedalada completa.

Answers

Answer:

a) El piñón debe tener 20 dientes.

b) La bicicleta avanza aproximadamente 1,759 metros por cada pedaleada completa.

Explanation:

a) El plato es el engranaje más grande que forma parte del sistema de transmisión, acompañando a la cadena y el piñón integrado a la rueda trasera. Asumiendo que no existen pérdidas por fricción seca y que las condiciones de lubricación del sistema de transmisión son óptimas tal que las pérdidas de potencia son despreciables. Además, supongamos que la bicicleta viaja a velocidad constante, entonces tenemos la siguiente identidad mediante las definiciones de trabajo y potencia:

[tex]T_{P}\cdot \omega_{P} = T_{p}\cdot \omega_{p}[/tex] (1)

Donde:

[tex]T_{P}[/tex] - Torque del plato, en newton-metros.

[tex]T_{p}[/tex] - Torque del piñón, en newton-metros.

[tex]\omega_{p}[/tex] - Rapidez angular del piñón, en radianes por segundo.

[tex]\omega_{P}[/tex] - Rapidez angular del plato, en radianes por segundo.

Sabiendo el hecho que tanto el plato y el piñón experimenta la misma velocidad tangencial, podemos simplificar (1) como sigue:

[tex]\frac{T_{P}}{R_{P}} = \frac{T_{p}}{R_{p}}[/tex] (1b)

Puesto que el radio de cada elemento y el número de dientes son, por separado, directamente proporcionales al número de dientes, modificamos (1b) así y tenemos la siguiente identidad, la cual equivale a su vez a la razón de desarrollo:

[tex]\frac{T_{P}}{T_{p}} = \frac{N_{P}}{N_{p}} = \frac{R_{P}}{R_{p}} = \frac{\omega_{p}}{\omega_{P}}[/tex] (1c)

Donde:

[tex]N_{p}[/tex] - Número de dientes del piñón, sin unidad.

[tex]N_{P}[/tex] - Número de dientes del plato, sin unidad.

Si tenemos que [tex]r = 1,4[/tex] y [tex]N_{P} = 28[/tex], entonces tenemos que el número de dientes del piñón es:

[tex]r = \frac{N_{P}}{N_{p}}[/tex]

[tex]N_{p} = \frac{N_{P}}{r}[/tex]

[tex]N_{p} = \frac{28}{1,4}[/tex]

[tex]N_{p} = 20[/tex]

El piñón debe tener 20 dientes.

b) De acuerdo con la relación de desarrollo, por cada revolución realizada por el plato, el piñón realiza 1,4 revoluciones. Entonces, el avance realizado por la rueda trasera ([tex]s[/tex]), en metros, es igual al productor de la relación de desarrollo y la circunferencia de la rueda, es decir:

[tex]s = r\cdot 2\pi\cdot R[/tex] (1)

Donde [tex]R[/tex] es el radio de la rueda trasera, en metros.

Si conocemos que [tex]r = 1,4[/tex] y [tex]R = 0,2\,m[/tex], entonces el avance realizado por la rueda trasera es:

[tex]s = r\cdot 2\pi\cdot R[/tex]

[tex]s = (1,4)\cdot (2\pi)\cdot (0,2\,m)[/tex]

[tex]s \approx 1,759 \,m[/tex]

La bicicleta avanza aproximadamente 1,759 metros por cada pedaleada completa.

Which material is colder in a room where all the objects are in for a long time?
A. all objects are the same temperature
B. wooden desk
C. a metal chair
D. a smart board

Answers

Wooden desk it doesn’t conduct or absorb heat as much as metal or plastic

How much gravitational energy does a 65 kg skydiver have 650 m up in the sky?

Answers

Answer:

G.P.E  = 414050 Joules or 414.05 Kilojoules

Explanation:

Given the following data;

Mass = 65 kg

Height = 650 m

We know that acceleration due to gravity is equal to 9.8m/s²

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

[tex] G.P.E = mgh[/tex]

Where;

G.P.E represents potential energy measured in Joules.m represents the mass of an object. g represents acceleration due to gravity measured in meters per seconds square. h represents the height measured in meters.

Substituting into the equation, we have;

[tex] G.P.E = 65 * 9.8 * 650 [/tex]

[tex] G.P.E = 414050 [/tex]

G.P.E  = 414050 Joules or 414.05 Kilojoules.

What is the baseball's mechanical energy when it is at a height of 8.0 m? Explain.

Answers

Answer:

In this section, we elaborate and extend the result we derived in Potential Energy of a System, where we re-wrote the work-energy theorem in terms of the change in the kinetic and potential energies of a particle. This will lead us to a discussion of the important principle of the conservation of mechanical energy. As you continue to examine other topics in physics, in later chapters of this book, you will see how this conservation law is generalized to encompass other types of energy and energy transfers. The last section of this chapter provides a preview.

The terms ‘conserved quantity’ and ‘conservation law’ have specific, scientific meanings in physics, which are different from the everyday meanings associated with the use of these words. (The same comment is also true about the scientific and everyday uses of the word ‘work.’) In everyday usage, you could conserve water by not using it, or by using less of it, or by re-using it. Water is composed of molecules consisting of two atoms of hydrogen and one of oxygen. Bring these atoms together to form a molecule and you create water; dissociate the atoms in such a molecule and you destroy water. However, in scientific usage, a conserved quantity for a system stays constant, changes by a definite amount that is transferred to other systems, and/or is converted into other forms of that quantity. A conserved quantity, in the scientific sense, can be transformed, but not strictly created or destroyed. Thus, there is no physical law of conservation of water.

Systems with a Single Particle or Object

We first consider a system with a single particle or object. Returning to our development of (Figure), recall that we first separated all the forces acting on a particle into conservative and non-conservative types, and wrote the work done by each type of force as a separate term in the work-energy theorem. We then replaced the work done by the conservative forces by the change in the potential energy of the particle, combining it with the change in the particle’s kinetic energy to get (Figure). Now, we write this equation without the middle step and define the sum of the kinetic and potential energies, K+U=E; to be the mechanical energy of the particle

A skydiver jumps from a stationary helicopter and reaches a steady vertical speed. She then opens her parachute. Which statement about the falling skydiver is correct?

A As her parachute opens, her acceleration is upwards.
B As she falls at a steady speed with her parachute open, her weight is zero.
C When she accelerates, the resultant force on her is zero.
alda
D When she falls at a steady speed, air resistance is zero.

Answers

Answer:

A) As her parachute opens, her acceleration is upwards.

Explanation:

The acceleration is the rate of change of the velocity.

Thus, if you have positive velocity and positive acceleration, your velocity increases

If you have positive velocity and negative acceleration, then your velocity decreases.

(The opposite happens when you have negative velocity).

Now, when the skydiver is falling, her velocity is downwards.

When she opens her parachute, her velocity downwards decreases.

This means that when she opens her parachute, she will have an acceleration in the opposite direction to her velocity, then at this point her acceleration is upwards.

We can conclude that the correct option is:

A) As her parachute opens, her acceleration is upwards.

A train was moving at 50m/s and slow down to 20 m/s in 50 seconds, what was its acceleration?

Answers

Answer:

-0.6 m/s^2

Explanation:

a = change in velocity / time

change in velocity = 50 m/s - 20 m/s = 30 m/s

time = 50 s

30 m/s / 50s

= 0.6 m/s^2

because it is decelarating, it will be -0.6 m/s^2

Define Acceleration.
Ty!​

Answers

Answer:

Acceleration is the name we give to any process where the velocity changes. Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or change your direction—or change both.

Which of the following is an example of uniform circular motion?
A. Swinging on a swing
B. Spinning on a merry-go-round
C. Sliding down a slide
D. Bouncing on a trampoline

Answers

Answer:

B

Explanation:

First narrow answers to CIRCULAR motion.

Only A and B have circular motion.

Second look at the keyword UNIFORM. A swing does not have uniform motion because it will accelerate due to gravity and have the most velocity at the bottom of the swing.

Therefore, it must be B.

Answer: B

Explanation: uniform circular motion only occurs on a merry go round

Which of the following is TRUE about thermal equilibrium?

Answers

Answer:

option one

Explanation:

equilibrium is used to describe the point in which something meets in this case the temperature of an object

what does the slope of a velocity-time graph reveal about an objects motion

Answers

Answer:

The slope of a velocity graph represents the acceleration of the object. So, the value of the slope at a particular time represents the acceleration of the object at that instant.

Answer:

The slope of a velocity graph represents the acceleration of the object.

Explanation:

So, the value of the slope at a particular time represents the acceleration of the object at that instant.

wait how does this work hehe this is kinda fun lol yay

Answers

It’s pretty fun I guess ‍♀️ just trying to get points for school lol

Which geologic events occur most often at this mid-oceanic ridge plate

boundary? *

2 points

Mid-oceanic ridge

plate boundary

Shelf

Sea level

Patella

Plate 2

Continental

crust

Rigid mantle

Asthenosphere

magnetic pole reversals and cooling of ocean water

hydrospheric pollution and adiabatic heating

earthquakes and volcanic eruptions

Answers

Answer: Earthquakes and Volcanic eruptions

Explanation:

You did not attach a picture however, this should be the correct answer.

Mid-oceanic ridge plate  boundaries such as the Mid-Atlantic Ridge form as a result of plate separating at the boundary. This leads to earthquakes due to the forces of tension acting on the plates.

When this happens, the mantle is exposed and therefore there will be volcanic eruptions as the lava comes to the surface as magma. When this magma cools it creates new seafloors and underwater mountains.

Complete the simulation for three different trails. Complete chart below, using the data for your simulation from each trail.

Answers

where’s the chart for the question?

Answer:

Are similar in pattern

Explanation:

edge 2021

what instrument used measure
to volume of water

Answers

Answer: A Graduated Cylinder or A Beaker ?

Explanation:

I think some are beakers or a more specific answer is a hygrometer

Sorry if I am wrong

Please please help me :)

Answers

Answer:

Explanation:

2) From F=ma

Force =15×40=600N or kgm/s2

3)From the same equation making acceleration the subject of the formula will give

a=f÷m

=24÷4=6m/s2

4)m=f÷a

=45÷15=3kg

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What is the output for an input of "9" for "n" for the equation m=4n-6. Produce that is sold for money at the market 1. First place in the food chain2. Second place in the food chain3. Third place in the food chain4. Last place in the food chain What is the best illustration of the long-term effects of Americas use of the atomic bomb in Japan?Atomic weapons were no longer developed because of radiation effects.The United Nations drafted rules surrounding atomic weapon use.The Allies used atomic weapons extensively from that point forward.More nations in the world began experimenting with atomic weapons. What is the measurement of 40 Do you believe that a clear environment is a basic human right? (05.03 LC)Lee y escoge la opcin con la forma correcta del condicional para completar la frase. Readand choose the option with the correct form of the conditional to complete the sentence.Si yo fuera el presidente, los senadores ms leyes (1 point)haranhacasharashaceran What does the figurative language in paragraph 15 help the reader understand about the flower Please help me! DO NOT SEND LINK! (Brainliest to whoever answers correctly) What is the area of the trapezoid? SOMEONE SMART PLEASE HELP ME!! a rectangle's area is 336 mm Its height is 16 mm. What is its bases? Which of the following questions would the authors of the high price of free trade and NAFTA: a decade of success most likely answer differently A. Has manufacturing output been affected by the implementation of NATFA B. why did the United States choose to adopt NAFTA in the 1990sC. Has NAFTA resulted in overall economic growth in the United States D. Has NAFTA resulted in increased it decreased wages for American workers Uranium is an element with three naturally occurring isotopes: 238U, 235U, and 234U. This means that 238U, which has a mass number of 238 has _______more than 235 u which has a mass number of 235. According to the 2010 Census information, 13.6% of those living in Lucas County are living in poverty. A random sample of 489 people living in Lucas County yielded that 16% of them report living in poverty. Test the claim that the poverty rate has increased since 2010. The level of significance is 0.10. c. Suppose the p-value is 0.085. State the conclusion of this test. find the supplementary angle of the following write the answer in the blank I will give brainliest help with the Area of a circle why is coal a non-renewable energy source Why was the battle of Stalingrad so challenging for Nazi soldiers? thanks for the help guys