How long should a spring be stretched for it to store 45 J of energy? The force constant of the spring is
540N/m?

Answers

Answer 1

Answer:

x = 0.4 m

Explanation:

When a spring is stretched from its equilibrium position. Some energy is stored in the spring. This energy is called the elastic potential energy of the spring. The formula used to calculate the magnitude of this stored energy is given as follows:

P.E = (1/2)kx²

where,

P.E = Elastic Potential Energy Stored in the spring = 45 J

k = Spring Constant = 540 N/m

x = amount of stretching = ?

Therefore,

45 J = (1/2)(540 N/m)x²

x² = (45 J)(2)/(540 N/m)

x = √(0.167 m²)

x = 0.4 m


Related Questions

2. A ball is dropped from a height of 52 m. The ball falls freely and reaches the ground in 75 s. What was the average speed of the ball?​

Answers

Answer:

v = 0.69 m/s

Explanation:

Given that,

A ball is dropped from a height of 52 m.

The ball reaches the ground in 75 seconds

We need to find the average speed of the ball. The ball will travel a distance of 52 m in 75 s. The average speed of the ball is distance divided by time taken. So,

[tex]v=\dfrac{52\ m}{75\ s}\\\\v=0.69\ m/s[/tex]

Hence, the average speed of the ball is 0.69 m/s.

For writing a scientific lab report, when you write the discussion do you need to include every single result in your data? Or do you just include a summary of your data?

Answers

Answer:

include a summary of data

Explanation:

In writing a scientific laboratory report, only the summary of the data is included in the discussion and not the entire result.

The discussion section of a lab report deals with the interpretation and explanation of findings during the course of the experiment in relation to the background information leading to the experiment/research. Hence, only the summary of the data generated is required. The detailed results are usually reported in the result section, not the discussion section.

Describe three common issues that affect societies across places and times

Answers

Poverty, Natural Disaster, and Disease are 3 answers.

Answer

Common issues that affect societies across places and times include healthcare, disease, natural disasters, drought, unemployment, racism, war, pollution, over-use of resources, selecting leaders, high taxes, education, and relationships with other countries.

Can you tell me what a substance is

Answers

Answer:

Explanation:

a particular kind of matter with uniform properties.

Answer:

a particular kind of matter with uniform properties or the real physical matter of which a person or thing consists and which has a tangible, solid presence.

Explanation:

Which of the following elements are found in Group 1A (sometimes referred
to as Group 1)?
Check all that apply.
A. Potassium
B. Argon
C. Hydrogen
D. Krypton

Answers

Answer:

A. Potassium

C. Hydrogen

Explanation:

What happens to the chemical structure of water when it changes state?
A. Water molecules break apart to form individual atoms.
B. Water molecules harden into ice molecules.
C. Water molecules melt into gas molecules.
D. Nothing happens to the chemical structure.

Answers

Answer:

c) Water molecules melt into gas molecules.

The chemical structure of water when it changes state - D. Nothing happens to the chemical structure.

Physical state of an object is the condition where substance have different energy content. For instance water is on heating it change into vapor or gaseous phase while cooling (decreasing heat content) causes water to become ice in solid phase. Therefore,

physical states is only in the energy content of the substance.Change in the state or phase of water does not change the chemical property. However, changing phase can alter the speed of the chemical reactions.

Thus, the change in physical state do not affect chemical properties, but affects the kinetics of the reactions.

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What is one example of thermal energy

Answers

Answer:

Solar Energy

Explanation:

Solar radiation (a form of an object) heats up our atmosphere, that's why heat is felt on earth.

For work to be accomplished we must have?


A. an action which causes movement and an opposite reaction

B. an action which causes no movement or reaction

C. a force and a movement in the opposite direction of the force

D. a force and a movement in the same direction as the force

Answers

Answer:

a force and a movement in the same direction as the force.

Explanation:

Carlos runs with velocity \vec{v}v →= (5.6 m/s, 29o north of east) for 10 minutes. How far to the north of his starting position does Carlos end up? (Give your answer to the nearest meter)

Answers

Answer:

1629 metres

Explanation:

Given that Carlos runs with velocity v = (5.6 m/s, 29o north of east) for 10 minutes.

To the north, the velocity will be:

V = 5.6 × sin 29

V = 2.715 m/s

Convert the time to second

Time = 10 × 60 = 600

Using the formula below

Velocity = distance/ time

Substitute all the parameters into the formula

2.715 = distance/600

Distance = 2.715 × 600

distance = 1629 m

What is the mass number of this atom?
Model Atom
w
A. 8
B. 16
C. 24

Answers

Answer:

C.24

Explanation:

ok...... ..........

Question 10 of 15
Which of the following are not phases of matter?
A. Gas
B. Mixture
€. Liquid
D. Compound
E. Solid

Answers

Answer:

B. and D.

Explanation:

phases of matter are solid liquid and gas

Answer:

b and d

Explanation:

phases are solid liquid and gas

is the value of resistance the same for all materials?​

Answers

Answer:

No it's different for different objects because they made of different materials

Explain why this statement is incorrect: “If I find something on the Internet, that means it is for public use, and I can do anything I want with it.” I give braininess

Answers

Answer:

A personal idea is an idea or concept that is unique to the individual who created it. Reference credit must be given when the idea is used by any person who did not create the concept.

Explanation:

I took the assignment already.

A personal concept is a concept or idea this is unique to the man or woman who created it. Reference credit scores have to receive when the idea is utilized by any individual who did not create the idea.

What is the internet?

The net is a big network that connects computers all over the world. through the net, people can percentage information and talk from anywhere with a web connection.

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100 POINTS UP FOR GRABS FOR ANYONE WILLING TO HELP! PLEASE!

Answers

Answer:

how can I download your doc it's not getting on please help I want to answer your question. you take a screenshot and send once more on this is it okkk.

Explanation:

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What is an atom? What it is made of? Explain with a paragraph.

Answers

Answer:

An atom makes up almost everything; it is the building block of this universe. An atom is made out of protons, electrons, and neutrons. Protons are positively charged particles, Electrons are negatively charged particles, and Neutrons are neutral. The protons, and neutrons are found in the very center of the atom, which is called the nucleus. The electrons orbit the nucleus.

Hopefully, this helps! :D

Ask your question below!

Answer:

Atoms make up everything, and they are made out of protons, neutrons, and electrons.

Explanation:

Hopefully its correct, have a nice day! :)

Which of the following is a common ground water contaminant
A.ozone
B.nuclear waste
C.carbon monoxide
D.fertilizers

Answers

The answer to the question is D:Fertilizers

what is systematic error​

Answers

Answer: an error

Explanation:

Answer:

A consistent, repeatable error that isn't random. Usually associated with faulty  equipment and the like.

define liquid in matter

Answers

Answer:

A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. A liquid is made up of tiny vibrating particles of matter, such as atoms, held together by intermolecular bonds.

A liquid is nearly incomprehensible fluid that conforms to the shape of its container but retains a constant volume independent of pressure.

What does this indicate about the claim?

Answers

claim

[klām]

VERB

state or assert that something is the case, typically without providing evidence or proof.

"he claimed that he came from a wealthy, educated family" · [more]

synonyms:

assert · declare · profess · maintain · state · hold · affirm · avow · aver · [more]

NOUN

an assertion of the truth of something, typically one that is disputed or in doubt.

"he was dogged by the claim that he had CIA links" · [more]

synonyms:

assertion · declaration · profession · affirmation · avowal · averment · protestation · representation · contention · submission · case · allegation · pretense · asseveration

a demand or request for something considered one's due.

"the court had denied their claims to asylum"

Answer:

the first person is right at all

how does mass affect gravity????

Answers

The amount of gravity that something possesses is proportions to its mass and distance between Iran’s another object

A wave has a length of 8 meters and a speed of 32 meters per second. What is the frequency of the wave

Answers

Answer:

The frequency of wave is 4 hertz.

Explanation:

Given,

wave length = 8m

speed of sound ( v) = 32 m/s

frequency ( f) = ?

we know,

v = f × lambda

or, 32 = f × 8

or, f = 32/8

or, f = 4 Hertz.

A motorcycle is stopped at a traffic light. When the light turns green the motorcycle accelerates to a speed of 77 km/h over a distance of 50 m.
(a) What was the average acceleration of the motorcycle over this distance?
(b) Assuming the motorcycle maintained a constant acceleration, how far is it from the traffic light after 3.0 s?

Answers

Answer:

good luck

Explanation:

.....................

the unit of energy is derived unit. ( give reasons) ​

Answers

Answer:

Because it is made by two different unit force (F) and displacement(s)

A car travels 15m east, then 5 m north, then 15m west. What is the car's
displacement?

Answers

Answer:

5m north

Explanation:

The displacement of an object is its deviation from it initial position.

given that the initial position is

15m east and it moves 5m north

then 15m west

displacement is = 15+5-15

displacement is= 5m north

kindly see attached a rough sketch for your reference.

should you need further clarification let me know.

is the distance traveled during a specific unit of

Answers

Answer:

velocity

Explanation:

I think i dont really know

Why magnet has more force at poles than middle ? Don't steal from google

Answers

Middle is the furthest from each pole, there is magnetic force at pole as it is due to the Earth's magnetic core

it's cause the magnetic force is greater where the field lines are crowded

since all the magnetic field lines generate from the poles, the crowd of field lines is maximum near pole

hope that helps !


More work was done. Which statement best describes the cause?
a
There was more force applied; therefore, there was less movement.
b
There was less force applied; therefore, there was more movement.
Oc
There was less force applied; therefore, there was less movement.
Od
There was more force applied; therefore, there was more movement.

Answers

Answer: I think the answer would be D

Explanation:

The more force you apply the more movement you will get.

Uncle Fester's CD's

Congratulations, your uncle fester has just willed you his CD collection!!! Using what you know about classification, see if you can arrange these CDs into similar groups to make them easier for your customers to find. Make a list of four groups that these CDs can be classified into.

The rest of the graph looks like this but here are the CD's for group 3 and Group 4.

Group 3
The Beatles
Beyonce
Alicia Keys
Carrie Underwood

Group 4
Bach
Blake Shelton
Beach Boys
Post Malone


I am having trouble with the graph.​

Answers

Answer: hey

Explanation:

A student walks to the right 25-m along the 800 hall in 15-s. They turn around and walk 15-m to the left in 8.0-s. Calculate the average speed and the average velocity

Answers

Answer:

Explanation:

Total distance covered  = 25 + 15 = 40 m

Total time = 15 + 8 = 23 s

Average speed = total distance covered / total time

= 40 / 23

= 1.74 m / s

Total displacement = 25 - 15 = 10 m

Total time = 15 + 8 = 23 s

Average velocity = total displacement / total time

= 10 / 23

= .434 m / s to the right .

The average speed of the student is approximately 1.74 m/s, and the average velocity is approximately -1.74 m/s (to the left).

Given:

Distance to the right = 25 m

Time taken to the right = 15 s

Distance to the left = 15 m

Time is taken to the left = 8.0 s

To calculate the average speed and average velocity, we need to use the following formulas:

Average speed = Total distance traveled ÷ Total time taken

Average velocity = Displacement ÷ Total time taken

Calculate the total distance traveled:

Total distance = Distance to the right + Distance to the left

Total distance = 25 + 15 = 40 m

Calculate the total time taken:

Total time = Time taken to the right + Time taken to the left

Total time = 15 + 8.0 = 23 s

Calculate the average speed:

Average speed = Total distance ÷ Total time

Average speed = 40 ÷ 23 = 1.74 m/s

Calculate the displacement:

Displacement = Final position - Initial position

Displacement = (-15 ) - 25  = -40 m

Calculate the average velocity:

Average velocity = Displacement ÷ Total time

Average velocity = -40 ÷ 23  ≈ -1.74 m/s

So, the average speed of the student is approximately 1.74 m/s, and the average velocity is approximately -1.74 m/s (to the left). The negative sign in the average velocity indicates that the student's net direction is to the left.

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Which phrase is not an example of intracellular communication?
A. molecular movement within a cell
B. reaction to pheromones
C.molecule in a cell changes function of cell
D. control of cell division​

Answers

Answer:

The answer is C

Explanation:

I ave K12 and i just finished it.

The phrase which is not an example of intracellular communication is :

C) Molecule in a cell changes function of cell.

"Intracellular communication"

The phrase which is not an example of intracellular communication is the molecule in a cell changes function of cell.

The intracellular communication could be a sort of communication which takes put inside a cell or interior a cell.

The intracellular speaks to inside a cell, subsequently, the development of the particle inside a cell may be with cytoplasmic gushing, cargo vesicle transport or any other instrument will speak to the intracellular communication.

Thus, the correct answer is C.

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