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calc check: hooke's law

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Phsyics
Hooke's Law and Young's Modulus Can someone please explain this to me. How can one determine if a material behaves according to Hooke's law?

calc check: hooke's law
A force of 27N is required to maintain a spring stretched from its natural length of 12cm to a length of 15cm. How much work is done in stretching the spring from 15 to 25cm? and this is what i did.. please check to see if i did it correctly.. thanks :) f=27N 12cm to 15cm f(x...

Math-Hooke's law
Using Hooke's Law (F=kx) determine: A) A weight of 5 pounds stretches a certain spring from its natural length of 10.2 inches to a length of 10.5 inches. Find K. B) What weight will stretch the spring in part (A) to a length of 13.2 inches? Thank you!

physics
Graph #1 is a parabola. Graph #2 is a hyperbola. a. Only graph 1 may possibly represent Hooke's law b. Only graph 2 may possibly represent Hooke's law c. neither

physics
Sir Robert Hooke (1635-1703), studied the elastic properties of springs and formulated the law that bears his name. Hooke found the relationship among the force a spring exerts, F, the distance from equilibrium the end of the spring is displaced, x, and a number k called the ...

physics
Hooke's law

calc/physics
A force of 250 N is required to stretch a spring 5m from rest. Using Hooke's law, F=kx, how much work, in joules, is required to stretch the spring 7m from rest? The energy required scales with x^2. Multiply 250 J by (7/5)^2.

Physics
Could a rubber band be used to replace the spring in a Hooke's Law experiment? Why/ why not?

work force
a force of 10 pounds is required to stretch a spring of 4 inches beyond it's natural length. assuming hooke's law applies, how much work is done in stretching the spring from its natural length to 6 inches beyond its natural length. what i did so far: F(x)=kx 10=k4 k=5/2 by ...

Physics
A block of wood is compressed 2.0 nm when inward forces of magnitude 120N are applied to it on two opposite sides. (a) Assuming Hooke's law holds, what is the effective spring constant of the block? (b) Assuming Hooke's las still holds, how much is the same block compressed by...

Physics
For Hooke's Law, the one about springs and mass, is the mass M a unit of g or kgs?

physics
how much is the energy stored in hooke's law spring increased when its stretch is increased from 8 cm to 16 cm? why is it 300%?

Science/Biomaterials
Hooke's law relates the amount of strain a material to the absolute amount of force applied. True or False?

biology
when robert hooke observed cork through his compound microscope , all that he could see were empty chambers. why were hooke's chambers empty

PHYSICS
Consider a spring and block system k= 18 N/m x initial = o m x final = 0.08m Useing Hooke's law to calculate the force needed to stretch this spring 8 cm.

phy
A string of natural length L extends to a new length L' under tensile force F. If Hooke’S law applies, the work done in stretching the spring is ------------

Integral calculus
It requires 8 inch pounds of work to stretch a certain spring 2 inches from its rest position. Assuming that the spring follows hooke's law, what is k? Thanks for your answers! :)

Maths
Now suppose that the weight attached to the spring is pulled down a further 5cm from its equilibrium positions and released from rest. Show that newtons second law leads to the dynamic equation (in SI units) d^2z/dt^2 + 36z - g = 0 where z(t) measures the extension of the ...

PHYSICS
If it takes 4.12 J of work to stretch a Hooke's law spring 12.1 cm from its unstressed length, determine the extra work required to stretch it an additional 10.0 cm.

Physics (2)
If it takes 4.00 J of work to stretch a Hooke's Law spring 10.0 cm from its unstressed length, determine the extra work required to stretch it an additional 10.0 cm

Calculus
It requires 8 inch pounds of work to stretch a certain spring 2 inches from its rest position. Assuming that the spring follows hooke's law, what is k? Please answer this question. Thanks for your answers in advance.

science
It takes 3.38 J of work to stretch a Hooke’s-law spring 5.63 cm from its unstressed length. How much the extra work is required to stretch it an additional 4.22 cm? Answer in units of J

Physics
The spring on a popgun obeys Hooke's law and requires a force of 220 N to compress it 12.0 cm to its cocked position. How much energy is stores in the cocked spring?

physics
When a 4.48 kg mass is hung vertically on a certain light spring that obeys Hooke's law, the spring stretches 2.68 cm. How much work must an external agent do to stretch the spring 3.96 cm from its unstretched position?

physics
The force required to stretch a Hooke’s-law spring varies from 0 N to 68.1 N as we stretch the spring by moving one end 16.2 cm from its unstressed position. Find the work done in stretching the spring

Pre-Calc Helppp!!!
Find the indicated angle è. (Use either the Law of Sines or the Law of Cosines, as appropriate. Assume a = 110 and c = 136 (angle B=38) Round your answer to two decimal places.)

trigonometry
Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" I have to use logarithms and law of tangents . and then provide the check. which says law of sine or mollweids equation. I can't us the cosine law. If you ...

algebra
hooke's law the distance d when a spring is stretched by a hanging object. if the distance is 14cm when the weight is 4kg what is the distance when the weight is 9kg The distance is

physics
A 53 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 13 m, and falls a total of 35 m. Calculate the spring stiffness constant k of the bungee cord, assuming Hooke's law applies.

Physics
When the rubber band in a slingshot is stretched, it obeys Hooke's law. Suppose that the "spring constant" for the rubber band is k = 44.2 N/m. When the rubber band is pulled back with a force of 9.38 N, how far does it stretch?

Physics
When the rubber band in a slingshot is stretched, it obeys Hooke's law. Suppose that the "spring constant" for the rubber band is k = 53 N/m. When the rubber band is pulled back with a force of 7.3 N, how far does it stretch? F=kx solve for x.

math
Hooke's Law. The distance d when a spring is stretched by a hanging object varies directly as the weight w of the object. If the distance is 64cm when the weight is 3kg, what is the distance when the wight is 9kg?

Physics
The force required to stretch a Hooke’s-law spring varies from 0 N to 70.4 N as we stretch the spring by moving one end 5.35 cm from its unstressed position. Find the force constant of the spring. Answer in units of N/m

Physics
The force required to stretch a Hooke’s-law spring varies from 0 N to 63.5 N as we stretch the spring by moving one end 5.31 cm from its unstressed position. Find the force constant of the spring. Answer in units of N/m

physics
A spinal spring,loaded with a piece of metal,extends by 10.5cm in air.When the metal is fully submerged in water,the spring extends by 6.8cm.Calculate the relative density of the metal using Hooke's law

Physics
If a 40 kg brick and a 400 kg brick each dropped from 1 m above a trampoline, find the lowest position of each brick. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. I know i must use Fs= kx, but where do I start? Do i find Fg at 1 m?

Physics
A cylindrically shaped piece of collagen is being stretched by a force that increases from 0 to 3.0 x 10^-2 N. The length and radius of the collagen are 2.5 and 0.091 cm. Young's Modulus is 3.1 x 10^6 N/m^2. a.) If the stretching obeys Hooke's Law, what is the spring constant...

physics
When a 2.50-kg object is hung vertically on a certain light spring described by Hooke's law, the spring stretches 3.13 cm. a)What is the force constant of the spring? b) If the 2.50-kg object is removed, how far will the spring stretch if a 1.25-kg block is hung on it?

physics
A 55.0 kg circus performer oscillates up and down at the end of a long elastic rope at a rate of once every 7.20 s. The elastic rope obeys Hooke's Law. By how much is the rope extended beyond its unloaded length when the performer hangs at rest?

PHYSIS
A 53.0 kg circus performer oscillates up and down at the end of a long elastic rope at a rate of once every 6.60 s. The elastic rope obeys Hooke's Law. By how much is the rope extended beyond its unloaded length when the performer hangs at rest?

Physics
If a 40 kg brick and a 400 kg brick each dropped from 1 m above a trampoline, find the lowest position of each brick. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. So, I used mg(h+x)=1/2 k x^2 then solved for x in each case. ** Bob...

Physics
A 72 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 13 m, and falls a total of 38 m. Calculate the spring stiffness constant "k" of the bungee cord, assuming Hooke's law applies. Calculate the maximum acceleration she experiences.

Physics
A 58 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 15 m, and falls a total of 36 m. Calculate the spring stiffness constant k of the bungee cord, assuming Hooke's law applies. Calculate the maximum acceleration she experiences.

physics
A 56 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 11 m, and falls a total of 38 m. Calculate the spring stiffness constant k of the bungee cord, assuming Hooke's law applies. Calculate the maximum acceleration she experiences.

College Physics PLEASE HELP
A cylindrically shaped piece of collagen is being stretched by a force that increases from 0 to 3.0 x 10^-2 N. The length and radius of the collagen are 2.5 and 0.091 cm. Young's Modulus is 3.1 x 10^6 N/m^2. a.) If the stretching obeys Hooke's Law, what is the spring constant...

HIPPA
please check my answer thanks If HIPPA law is stricter than state law, which standards should you follow and why ? What if state all was stricter ? This is all I have so far any input would be great HIPPA laws are stricter than any state law. This standard over rules any state...

Physics
A 66 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 14 m, and falls a total of 34m. 1. Calculate the spring stiffness constant of the bungee cord, assuming Hooke's law applies. 2. Calculate the maximum acceleration she experiences.

physics
A rubber band of relaxed length 6.3 cm stretches to 10.2 cm under a force of 1.0 N, and to 16.5 cm under a force of 2.0 N. Does this rubber band obey Hooke's Law?

physics
sorry mr bob purlsey again to annoy you. so i did all my calculations and read about hooke's law yesterday and presented to my teacher. however i was not allowed to used hooke's law because we haven't learned it yet and i did not know how to connect potential energy to force ...

algebra
Hooke.s Law. The distance d when a spring is streched by a hanging object varies directly as the weight w of the object. If the distance is 66 cm when the weight is 3 Kg., what is the distance when the weight is 7 Kg.

Math
a weight of mass m is attached to a spring and oscillates with simple harmonic motion. By Hooke's Law, the vertical displacement, y(t) satisfies the differential equation dy/dt=sqrt(k/m)*sqrt(A^2-y^2) where A(Fixed) is the maximum displacement and k is a constant, solve this ...

Bus law
Why is the United State a “common law country”? We're a common law country because we follow precedents established over hundreds of years in Britain and the U.S. Common law is followed except when statutory law opposes a specific practice. Check this site for more ...

physics
The length of a spring when a mass of 20g is hung from its end is 14cm,while its total length is 16cm when a mass of 30g is hung from the same end.calculate the unstretched spring assuming Hooke's law is obeyed.

physics ! HELP !
A 65 kg bungee jumper leaps from a bridge. She is tied to a bungee cord that is 11m long when unstretched, and falls a total of 30m . Part a) Calculate the spring constant of the bungee cord assuming Hooke's law applies. part b)Calculate the maximum acceleration she experiences.

College Math
Hooke's Law the table shows the distance D that a spring stretches when a weight W is hung on it. W (pounds 2 6 9 15 D (inches) 1.6 4.8 7.2 12 (a.) Do the data represent direct or inverse variation? Explain. (b.) Find an equation that models the data. (c.) How far will the ...

Physics
Hooke's law states that the distance, d, a string is stretched varies directly with the force, F, applied to the spring. If a force of 12 pounds stretches a spring 3 inches, how far will the spring stretch when a force of 30 pounds is applied?

PHYSICS
Hooke's Law: 1.) If it takes 10 N to compress a spring 20cm, how much energy will be stored in the spring when it is stretched 50cm. ***Also, for ex: If I am doing work against a restoring force, say, doing work against gravity, what kind of force is the elastic force of a ...

physics
A 53.6 kg circus performer bobs up and down at the end of a long elastic rope at a rate of once every 2.80 s. The elastic rope obeys Hooke's law. Find how much the rope is extended beyond its unloaded length when the performer hangs at rest. ** I think Im missing a step when i...

Physics
A cylindrically shaped piece of collagen (a substance found in the body in connective tissue) is being stretched by a force that increases from 0 to 0.0436 N. The length and radius of the collagen are, respectively, 2.90 cm and 0.0815 cm, and Young's modulus is 3.1 x 106 N/m2...

Physics
f a 40 kg weight and a 200 kg weight each dropped from 1 m above the trampoline, find the final position of each weight. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. I was able to get the answer to this, using mg(h+x) = 1/2kx^x but...

physics
Can you please help me find the theory of Robert Hooke on Wave Explanation of Colors. Please... My report about this is due on Monday. Thank you for helping. God bless. According to (Broken Link Removed) , "Robert Hooke (1635-1703) who started as an assistant to Robert Boyle, ...

Physics
An automobile of mass 2000 kg is driven into a brick wall in a safety test. The bumper behaves like a Hooke’s-law spring. It has an effective spring constant of 5 × 106 N/m, and is observed to compress a distance of 8.7 cm as the car is brought to rest. What was the initial...

rate law chemistry
hey so this is for rate law if the first step is the slow step. it is also an equilibrium. I just want to check if this is right. [Acetophenone]+[Ethoxide]<-k1--> k-1 [Intermediate]+[Ethanol] Just want to make sure this will be the rate law: k1/k-1 [Acetophone][Ethoxide...

physics
(a) A bathroom scale has a spring that is compressed by 1.50 cm when a 165 kg person stands on the scale. Assuming the spring is described by Hooke's law, find its force constant. (b) How much would it be compressed if a 94.0 kg person stands on the scale in an elevator that ...

physics
When a 2.60-kg object is hung vertically on a certain light spring described by Hooke's law, the spring stretches 2.30 cm. (a) What is the force constant of the spring? (b) If the 2.60-kg object is removed, how far will the spring stretch if a 1.30-kg block is hung on it? (c) ...

Physics
When a 3.00-kg object is hung vertically on a certain light spring described by Hooke's law, the spring stretches 3.07 cm. (a) What is the force constant of the spring? N/m (b) If the 3.00-kg object is removed, how far will the spring stretch if a 1.50-kg block is hung on it? ...

Physics
When a 2.00-kg object is hung vertically on a certain light spring described by Hooke's law, the spring stretches 3.17 cm. (a) What is the force constant of the spring? N/m (b) If the 2.00-kg object is removed, how far will the spring stretch if a 1.00-kg block is hung on it...

World History Answer Check
1. Explain the signifigance of the Twelve Tables and the Law of Nations to the development of political thought? A: The significance of the Twelve Tables to the development of politcal thought was that they established the idea that all free citizens had a right to the ...

Sorry, another math problem please
Hooke's Law asserts that the force required to either stretch or compress a spring from its natural length varies as the displacement. A certain spring is stretched 12 inches beyond its natural length by a 3 lb. weight. Express the force in terms of the displacement for this ...

physics
A spring-loaded dart gun is used to shoot a dart straight up into the air, and the dart reaches a maximum height of 12 meters. If the spring is compressed only half as far the second time, how far up does the dart go this time (no friction and using Hooke’s Law on the spring...

government
Which branch of the law regulates wrongful acts involving injury to one’s person, property, or reputation in a situation not covered by the terms of a contract? A. common law B. tort law C. civil law D. contract law

government
Which branch of the law regulates wrongful acts involving injury to one's person, property, or reputation in a situation not covered by the term of a contract? A. common law B. tort law C. civil law D. contract law

Calculus - Hooke's Law , Spring Constant
Hi could someone please help me answer this question: It requires 0.05 joule of work to stretch a spring from a length of 8 cm to 9 cm and another 0.10 joule to stretch it from 9 cm to 10 cm. Determine the spring constant and find the natural length of the spring. Thank you

bus law
What is the chronological order of the major legislation that makes up the history of employment law in this country? For each law, state the social problem the law was designed to address, and discuss how employment law has affected the workplace in the last two decades.

Biology
In 1665, Robert Hooke, an English scientist, reported an interesting observation while looking through his microscope at a cork, "I took a good clear piece of cork, and with a penknife sharpened as keen as a razor, I cut a piece of it off, then examining it with a microscope, ...

physic
a force of 3.5 N is applied to a spring which obeys Hooke's law and produces and extension of 0.07m. calculate the spring constant what is the size of the force that will produce and extension of 4.0 cm caluclate the unstretched length of the spring if its total length is 17.5...

Physics
I think that for energy of a spring I should use (1/2)(k)(x^2) and (1/2)(m)(v^2) but i'm not sure what to do with the equations to solve the problem. A cylindrically shaped piece of collagen is being stretched by a force that increases from 0 to 3.0 x 10^-2 N. The length and ...

Science-Chemistry
1. What is Charles’s law? • State the definition of the law in words. • What are the assumptions of Charles’s law? • Write mathematical equations that represent the law. • What can you do with Charles’s law? • Using a gas-filled balloon as an example, describe ...

math
hooke's law determine that if a small weight is suspended from a spring,the length of the stretched spring y, is a linear function of the weight, x. determine the linear equation if the unstretched spring is 12 inch and weight of 2 lbs stretches it to 16 inch

PHYSICS HELP!-Hooke's Law
You should expect concrete to have an elastic constant that is _____ than wood. a. larger than b. smaller than c. equal to So...based on what I looked up as the definition for elastic constant and linear elasticity, I think conrete is less elastic than wood is. As compared to ...

question about math (law of syllogism/detachment)
Does anyone know about the law of syllogism and law of detachment. If so, can you check my work.

physics- please help
A 65 kg bungee jumper leaps from a bridge. She is tied to a bungee cord that is 11m long when unstretched, and falls a total of 30m . Part a) Calculate the spring constant of the bungee cord assuming Hooke's law applies. part b)Calculate the maximum acceleration she ...

Physics
If a 40 kg brick and a 400 kg brick each dropped from 1 m above a trampoline, find the lowest position of each brick. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. So, I used mg(h+x)=1/2 k x^2 then solved for x in each case. and got...

Government Law question
What kind of law is it when judges make the law by their decisions on the bench? ___ Law

algebra
Hooke's law states that the distance an object is stretched varied directly with the force exerted on the object. Suppose the force exerted by 7-kg mass stretches a certain spring 5 cm. To the nearest 0.1 cm. how far will the spring be stretched by the force of an 11-kg mass?

trigonometry (repost) Mathmate
I want to start by saying thank you . You have no idea how much u have helped me understand logarithms, even better then the books i have (it poorly explains the subject of trigonometry let alone logarithms and antilog). Your last explanation was very clear and i even ...

World History Answer Check (Ms.Sue)
How did King Henry II's goal to become more powerful affect the development of law? A: Henry's goal to become more powerful affected the development of law as it ultimately expanded the power of royal courts. Since royal courts were now found throughout England, a body of ...

Law
Research and identify a labor law that is specific to your state. Share a brief summary of the law with us and discuss why you believe this law is or is not important to the employer-employee relationship.

Pre-Calc
This is the last question on my pre-calc homework, I looked through the textbook and have no idea how to do this. Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one ...

College Algebra
Hooke's Law states that the distance a spring stretches is directly proportional to the weight attached to the spring. If a 30-pound weight attached to the spring stretches the spring 8 inches, find how much weight is needed to stretch the spring 12 inches.

physics
The force required to stretch a Hooke’s-law spring varies from 0 N to 62.4 N as we stretch the spring by moving one end 17.2 cm from its unstressed position. a) Find the force constant of the spring. Answer in units of N/m b) Find the work done in stretching the spring. ...

Physics
A uniform bar of iron is supported by a lon, uniform Hooke's Law spring. The spring is cut in half exactly and the two pieces are used to support the same bar. If the whole spring is stretched by 4 cm in the first bar (that is not cut in half) how much would each spring ...

legal and ethical issues
select a current or proposed law that impacts the delivery of human services what reliable resources are availiable to learn about the implications of this law? What is the purpose or rationale of the law? How will the law effect da-t-day operations within human service ...

science
An atom that has the same amount of atoms of each element on both sides of the reaction obeys what law? law of conservation of energy law of conservation of mass law of conservation of temperature law of conservation of atoms I know the Answer law of conservation of mass I ...

math
Hooke's law states that the distance an object is stretched varied directly with the force exerted on the object. Suppose the force exerted by 7-kg mass stretches a certain spring 5 cm. To the nearest 0.1 cm. how far will the spring be stretched by the force of an 11-kg mass? ...

physics
In the dangerous “sport” of bungee-jumping, a daring student jumps from a balloon with a specially designed elastic cord attached to his ankles. The unstretched length of the cord is 25.0 m, the student weighs 700 N, and the balloon is 36.0 m above the surface of a river ...

physics help!
Two springs P and Q both obey Hooke’s law. They have spring constants 2k and k respectively.The springs are stretched, separately, by a force that is gradually increased from zero up to a certain maximum value, the same for each spring. The work done in stretching spring P ...

Health Law
please check my answer thanks :) Sue says that her claim is based on the fundamental law of nation what does that mean(what source is Sue relying on) I think Sue is relying on the constiution

Physics
A force of 2N will stretch a rubber band 2 cm. Assuming that Hooke's law applies, how far will a 4N force stretch the rubber band? How much work does it take to stretch the rubber band this far?

physic
Hooke's law describes a certain light spring of unstretched length 30.0 cm. When one end is attached to the top of a door frame, and a 8.40-kg object is hung from the other end, the length of the spring is 40.00 cm. (a) Find its spring constant. ____ kN/m (b) The load and the ...

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