Tuesday
February 21, 2017

Search: A force of 5.0 is required to stretch a certain spring by 1.2 .How far must this spring be stretched for its potential energy to be 0.015 ?

Number of results: 69,822

physics
The rope of a swing is 3.1 m long. Calculate the angle from the vertical at which a 77-kg man must begin to swing in order to have the same kinetic energy at the bottom as a 1430-kg car moving at 1.05 m/s (2.35 mi/hr).
November 5, 2014 by Jina

Criminal Justice
Create a checklist that may be provided to the officers involved in the operation so they may have a reference reminding them of what they must do to properly process a defendant in a federal investigation. The checklist should include processing requirements and the mandated ...
November 1, 2007 by Luke Phillips

POL 201
If Americans were said to have a positive liberty to work, then the government (Points : 1) may not prevent one from working. is required to provide jobs to those that cannot find jobs. may never pursue a policy that leads to unemployment. must prohibit discrimination in the ...
November 3, 2014 by Jo

Physics
Consider the series RLC circuit in which R2<4L/C (underdamped). Assume that at t=0 , the charge on the capacitor has its maximum value. The differential equation obeyed by the potential across the capacitor can be written in the following form d2V/dt2+a*dV/dt+b*V=0 In the ...
May 6, 2013 by rishabh gupta

PHYSICAL SCIENCE
A 0.50-KG BLOCK INITIANALLY ON A REST ON A FRICTIONLESS HORIZONTAL SURFACE IS ACTED UPON BY A FORCE OF 8.0N FOR A DISTANCE OF 4.0M. HOW MUCH KINETIC ENERGY DOES THE BLOCK GAIN?
September 7, 2010 by LESLIE

physics
a wieght of 10kg mass is raised through a hieght of .8 meter from 1.5 meter to 2.3meter against force of gravity.how much energy isrequired in cals.
January 11, 2011 by ajmer singh sidhu

PHYSICS
A force 1 Mega-dyne is forced agaist a running body to stop it.If the kinetic energy of the body is 1 Joule,then how much distance it will go before stopping?
March 2, 2013 by BIKRAMADITYA

physics
Given the same exerted force (130N) exerted over 2s on two javelins of different mass (javelin1 = 1.2 kg; javelin2 = 1.6 kg), what is the kinetic energy of each javelin?
April 9, 2014 by Marcela

Physics
A 48 N cart is pulled across a concrete path at a constant speed. A 42 N force is required to keep the cart moving. What is the coefficient of kinetic friction between the path and the cart?
September 29, 2012 by Hanu

Science--Myanswer Plz, plz
Electric charges that are different attract each other. repel each other. **** exist in pairs. do not interact. Magnetic field lines around a bar magnet are only perpendicular to the magnet. spread out from one pole and curve around to the other. **** cross back and forth over...
May 23, 2014 by HeELP ME FAST!!!

algebra II
A moving company charges a flat rate of $85 plus and additional $.17 per mile driven. How far must the company drive to earn @ least $100? Round to the nearest mile.
January 30, 2012 by Henry

statistics
To win at BIG GAME in a certain state, one must correctly select 6 numbers from a collection of 49 numbers (1 through 49). The order in which the selections is made does not matter. How many different 6-number selections are possible, assuming no repetition of numbers? Choose ...
November 13, 2010 by lucky

Science
What is the difference between conserving energy and energy efficiency? What are 5 benefits of conserving energy?
June 11, 2014 by Anonymous

English (poetry)
IV His soul stretched tight across the skies That fade behind a city block, Or trampled by insistent feet At four and five and six o’clock; And short square fingers stuffing pipes, And evening newspapers, and eyes Assured of certain certainties, The conscience of a blackened...
May 19, 2011 by Jess

Physics
A bolt is to be tightened with a torque of 8.0 N*m. If you have a wrench that is 0.35 m long, what is the least amount of force you must exert? the equation for this problem is t=Fr sinbeta, but the sin is not given What am I suppose to do?
December 6, 2009 by Shawn

Physics
What net braking force must be applied to stop a car with a mass of 900 kg initially travelling at a velocity of 100 km/h within a straight-line distance of 50 m?
July 17, 2010 by Syafiqa

pre calc
You are three miles north and two miles east of a cabin. On what bearing must you walk to reach the cabin? How far are you from the cabin ?
December 8, 2011 by jim

Physics
1. It takes 190 kJ of work to accelerate a car from 21.0 m/s to 29.0 m/s. What is the car's mass? 2. A 32-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 205 J from 435 J. How high ...
March 15, 2011 by Leo

english
i will be thankfull to you,if you help me correct my sentences. 1.)complete the sentences with correct form of words: The ball ______(fly)out of his hand like a bullet and______(hit)third slip,who_____(not look),full pitch on the knee cap.With a yell of agony third slip_____(...
March 13, 2013 by ramesh reddy

Science (6th grade, but actual 7th grade paper)
We are learning about potential and kinetic energy. There are two ramps. One is short and the other is long. The long one is labeled A, and the short one is labeled B. On which one would a marble go the farthest after touching the ground?
November 30, 2010 by Needs Help

Pre-Calculus
A drawbridge is l = 110 feet long when stretched across a river. As shown in the figure below, the two sections of the bridge can be rotated upward through an angle of α = 34°. a)If the water level is 35 feet below the closed bridge, find the distance d between the end ...
February 25, 2016 by Tim

French
Imagine that you work at a travel agency. Clients ask you what they should pack when planning a trip to certain French-speaking vacation spots during the winter and spring travel seasons. According to the weather report you receive from each city's tourist bureau, select at ...
December 14, 2009 by Anna

physics
A force of friction of 3.2N acts on a 1.1kg puck while it is sliding along a horizontal surface. If the initial velocity of the puck was 7.5 m/s , how far will the puck travel before coming to rest?
November 7, 2010 by mercedes

physics
A girl of weight 500 N sits 3m from the fulcrum. how far away is the fulcrum on the other side should a force of 600  N be applied to balance the girl
March 28, 2012 by Anonymous

physics
two charges originally separated by 10cm are moved further apart untill the force between them has decreased by a factor of 10. How far apart are these charges?
April 25, 2013 by radiant

College Algebra 105
use the rational zero's theorem to list the potential zero's of the polynomial function. Do not attempt to find the zero's f(x)=-169x^7-x^6+x+13 and then the second part is find the potential rational zero's.
December 9, 2013 by Dawn Mason

physics
A 33 N force acting at 90° and a 44 N force at 60° are applied concurrently at a point P. What is the magnitude and direction of the resultant force?
November 18, 2010 by nic

physics
A ball attached to the end of a string is whirled on a horizontal circle at constant speed. Consider the linear momentum, total energy, and kinetic energy of the ball throughout its motion. Which of the following statements is true? Both linear momentum and kinetic energy are ...
January 6, 2010 by hilary

science
how do the words matter, element, atom, crystal, compound, and molucle relate? Matter is composed of elements which are composed of atoms and molecules and these combine to form compounds that may be crystalline. why do leaves turn water a differnt color Leaves turn a diferent...
January 21, 2007 by 12345

Texans
I had trouble posting a response the first time around. However, thank you to those who responded to my inquiry regarding Texas Pride. Interestingly, I came across a hairdresser who lived in Michigan most of her life. She told me that people in Texas are friendlier and she has...
July 31, 2008 by jules

physical
A 65.0-kg circus performer is fired from a cannon that is elevated at an angle of 55.8 ¡ã above the horizontal. The cannon uses strong elastic bands to propel the performer, much in the same way that a slingshot fires a stone. Setting up for this stunt involves stretching ...
May 24, 2014 by LEHUAN

physics
A 65.0-kg circus performer is fired from a cannon that is elevated at an angle of 55.8 ¡ã above the horizontal. The cannon uses strong elastic bands to propel the performer, much in the same way that a slingshot fires a stone. Setting up for this stunt involves stretching ...
May 24, 2014 by Bin

physics
A plane starting at rest at the south end of a runway undergoes a uniform acceleration of 1.60 m/s^2 to the north. At takeoff, the plane's velocity s 72.0 m/s to the north. A. What is the time required for takeoff? B. How far does the plane travel along the runway?
September 17, 2009 by Lady12

Physics
If an object weighs 70 pounds and it gets hit by a truck with a force of 7400 N, and there is a frictional force of -35 N, what is the net force?
September 29, 2010 by Geoff

pre calc
you are 7 miles north and 4 miles west of a cabin.how far are you from the cabin? on what bearing must you walk to reach the cabin?
December 8, 2011 by bob

physics
The largest tension that can be sustained by a stretched string of linear mass density μ, even in principle, is given by τ = μc2, where c is the speed of light in vacuum. (This is an enormous value. The breaking tensions of all ordinary materials are about 12 ...
March 2, 2015 by barýþ

the big idea of energy
i have to do an assesment about sound. i have to include the big idea of energy. i have no clue what it is! HHEELLPP MMEE!! What do you mean when you say "the big idea of energy"? I know that sound is created by vibrations, but I'm not sure that's exactly what you are looking ...
December 5, 2006 by Anon

PHYSICS
A hollow tube (I = MR2) rolls without slipping along the surface. The ratio of its translational kinetic energy to its rotational kinetic energy is a. 1 b. 2 c. 3 d. 1/2 e. 1/3 I say A becasue both add up to get the total kinetic energy.
April 22, 2009 by Sandy

Physics
For any given quadrupole, let the charges be +q, −q, +q, and −q at the corners of the square, and l be the side of the square. Calculate approximately the electric potential and the electric field far away from the quadrupole, IN THE THREE-DIMENSIONAL SPACE. You ...
September 4, 2014 by Asahi

physics
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.50x^5 kg. Its speed is 27.0 m/s, and the net braking force is 4.30x10^5 N. (a)what is its speed 7.50 s later? (b)how far has it traveled in this time?
March 15, 2011 by Dakota

Science
i posted this earlier, but no one answered. so i'll try again. Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force is called the system...
December 11, 2012 by Gavin

biology:cells
which of the following is not true? a. ATP is formed during glycolyisis b. ATP contains less potential energy than ADP*** c. Plant cells generate ATP during cellular respiration d. ATP is used as a mobile energy carrier molecule by all cells which of the following is not true...
November 28, 2016 by Please check answers

Philosophy
What are we required to do and why are we required to do it? Define how the following theories attempt to provide an answer to the question above Natural Law, Virtue Ethics, and Contract Theory
January 26, 2010 by Jay

stretch marks
how do you get rid of them? are they permanent? Apparently stretch marks are permanent although they will fade in time. These sites have more information about them. http://www.kidshealth.org/teen/your_body/skin_stuff/stretch_marks.html http://en.wikipedia.org/wiki/Stretch_marks
July 17, 2007 by JOSE

Pre Calc
I do not see why I got two different equations for my answer A weight attached to the end of along spring is bounicng up and down. As it bounces, its distance from the floor varies sinusoidally with time. You start a stopwatch. When the stopwatch reads 0.3 s, the weight first ...
December 10, 2009 by Joe

english
Describe one of the strongest images you encountered from any of the following literature wolves of men by barry holstun lopez birches by robert frost haiku by kaga no chiyo haiku by basho spring is like a perhaps land by E.E Cummings from an inconvenient truth by al gore the ...
December 19, 2014 by shy girl

physics!!!
Two capacitors, C1 = 27.0 µF and C2 = 35.0 µF, are connected in series, and a 21.0 V battery is connected across them. (a) Find the equivalent capacitance, and the energy contained in this equivalent capacitor. equivalent capacitance= µF total energy stored= (b) Find the ...
January 27, 2012 by Help

Physics
The electric potential inside a charged spherical conductor of radius R is given by V = kQ/R, and the potential outside is given by V = kQ/r. Using Er = -dV/dr, derive the electric field inside and outside this charge distribution.
February 15, 2013 by Christian

chemistry
'Aluminium displaces hydrogen from dilute HCl whereas silver does not. The E.M.F. of a cell prepared by combining Al /Al 3 andAg/Ag is 2.46 V. The reduction potential of silver electrode is 0.80 V. The reduction potential of aluminium electrode is :
June 6, 2016 by Anushka

Physics
A 2.0kg object is moving at 3 m/s. A 4-N force is applied in the direction of motion and then removed after the object has traveled an additional 5m. The work done by this force is. Would the answer be simply: W=F*d= (4* 5m)= 20N and you only take the information concerning ...
November 4, 2006 by Nancy

space
2 birds fly from their nest to get to a certain spot(food) in a straight line,from opposite directions (east-west) Both fly 60 km/hr.but one has a 44 km/hr tailwind to his advantage(disadvantage for the other.The bird with the advantage gets to the feeding spot 1 minute before...
January 23, 2011 by Anonymous

Math
2 birds fly from their nest to get to a certain spot(food) in a straight line,from opposite directions (east-west) Both fly 60 km/hr.but one has a 44 km/hr tailwind to his advantage(disadvantage for the other.The bird with the advantage gets to the feeding spot 1 minute before...
January 23, 2011 by JP

Chemistry
You have 23.0g of water initially at -46°C. How much energy in joules is required to heat the ice to 0°C? c ice = 2.1 J/g°C. I thought joules was calculated by grams*change in temperature*specific heat. The answer I get from 23*46*2.1 is 2221.8, but web assign says this is ...
March 1, 2015 by Harrison

Physics...please help me out..
A body of mass 7.5kg is to be pulled up along a plane which is inclined at 30degree to the horizontal. If the efficiency of the plane is 75 %, what is the minimum force required to pull the body up the plane?
January 20, 2016 by Angela

physics
I want to confirm if its true if one object is to exert a force on another, then the two objects must be touching or connected by a third object.
April 6, 2010 by Anonymous

physics
if a car generates 18 hp when traveling at a steady 88 km/h, what must be the average force exerted on the car due to friction and air resistance
December 9, 2011 by eli

Physics
A 2.9 kg brick has a kinetic coefficient of friction of 0.33. what force must be applied to the brick for it to move at a constant velocity? Show work
October 17, 2015 by hamza

Pre-Calc/Trig..
Write a function for the graph described as a transformation of y=x^2 y=x^2 experiences a vertical stretch of factor 2 and then a shift right of 3 units.
October 7, 2014 by Anonymous

physics
Suppose a beam of 5.0 eV protons strikes a potential energy barrier of height 5.5 eV and thickness 0.57 nm, at a rate equivalent to a current of 825 A. (a) How long would you have to wait-on average-for one proton to be transmitted? (b) How long would you have to wait if the ...
November 9, 2011 by Anonymous

Chemistry
In terms of energy, what must be done to break a covalent bond? Is the process of breaking a covalent bond exothermic or endothermic?
February 8, 2012 by Smyth

Chemistry
In terms of energy, what must be done to break a covalent bond? Is the process of breaking a covalent bond exothermic or endothermic?
February 8, 2012 by Smyth

chemistry
how many joules of energy must be removed from 325g water at 35 degress celsius to form ice at 0 degress celsius?
July 3, 2012 by tna

physics
The force shown in the figure below is the net eastward force acting on a ball. The force starts rising at t=0.012 s, falls back to zero at t=0.062 s, and reaches a maximum force of 35 N at the peak. Determine with an error no bigger than 25% (high or low) the magnitude of the...
July 2, 2008 by Elisa

physics
A 3.1-kilogram gun initially at rest is free to move. When a 0.015-kilogram bullet leaves the gun with a speed of 500. meters per second, what is the speed of the gun?
May 7, 2011 by ashley --- HELP PLEASEE!!!

Physics
Two sinusoidal waves with the same amplitude of 9.11 mm and the same wavelength travel together along a string that is stretched along an x axis. Their resultant wave is shown twice in the figure, as valley A travels in the negative direction of the x axis by distance d = 60.0...
January 31, 2013 by Anonymous

Physics
Two sinusoidal waves with the same amplitude of 9.11 mm and the same wavelength travel together along a string that is stretched along an x axis. Their resultant wave is shown twice in the figure, as valley A travels in the negative direction of the x axis by distance d = 60.0...
January 31, 2013 by Anonymous

Physics
A 64.4-kg skateboarder starts out with a speed of 2.11 m/s. He does 81.6 J of work on himself by pushing with his feet against the ground. In addition, friction does -289 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
December 5, 2012 by P

ph
A 64.4-kg skateboarder starts out with a speed of 1.95 m/s. He does 119 J of work on himself by pushing with his feet against the ground. In addition, friction does -260 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
March 11, 2014 by Anonymous

PHYSICS
A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
April 22, 2015 by KS

PLEASE HELP
A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
April 22, 2015 by KS

physics
A 64.2-kg skateboarder starts out with a speed of 2.21 m/s. He does 98.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -276 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
January 11, 2017 by Cameron

physics
A 64.2-kg skateboarder starts out with a speed of 2.21 m/s. He does 98.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -276 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
January 12, 2017 by Tyler

Physics
A 1000kg space craft at 500m/s is on a collision course with a 400kg satellite travelling at 700m/s. Their paths are converging at a 45 degree angle. After the collision, they remain locked together. a) calculate their final speed b) calculate the quantity of non-kinetic ...
December 15, 2010 by Jon

Physics
A 1000kg space craft at 500m/s is on a collision course with a 400kg satellite travelling at 700m/s. Their paths are converging at a 45 degree angle. After the collision, they remain locked together. a) calculate their final speed b) calculate the quantity of non-kinetic ...
December 15, 2010 by Jon

Chemistry
a solution is prepared using .015 L of 1.0 M HCl and .020 L of .50 M HNO3. the final volume of the solution is 1.25 L. Answer th following questions. a)what are the [H3O+] and [OH-] in the final solution? b)What is the pH of the final solution?
May 4, 2010 by Alexa

chemistry
What is the value of [OH-] in a 0.015 M CH3COOH solution? Ka = 1.8 x 10-5 I started by writing the equation: CH3COOH + H2O <---> H3O+ + CH3COO- Ka= [H3O+][CH3COO-]/[CH3COOH]= 1.8 E-5 ... Now what? I don't understand where OH relates to this ...
November 15, 2010 by Audrey

physics- multiple choice
1. Two forces are applied to a box on a frictionless surface. One force is 40 N [S]. The second force is 70 N [N30ºW]. What is the overall net force? a) 40.6 N [S59.5ºE] b) 110 N c) 40.6 N [N59.5ºW] d) 40.6 N [S30.5ºW] 2. When drawing free body diagrapms, it is important ...
December 12, 2013 by Jessie

physics
A 40 N force is applied to pull the desk horizontally to the right. What is the magnitude (the net force or the total force) acting on the deak ?
December 1, 2011 by maria

science
A 75-N sack is dragged along the floor with a horizontal force of 100N. The frictional force is 30N. What is the direction of net force
February 25, 2013 by tonya

physics
A force 457 Newtons causes a displacement 6.2 metres which is at an angle of 8o to the direction of the force vector. Calculate the work done by the force.
May 26, 2014 by naser

science
a baby pushes a toy across the floor with a force of 5 newtons inertia balanced force unbalanced force velocity
July 13, 2015 by christina

physics
An LED is a device that emits light of a particular frequency when the voltage applied across the LED reaches a certain value. This effect can be used to measure Planck’s constant. In the circuit shown below the switch is closed and the potentiometer is adjusted until the ...
August 14, 2015 by Desmond

Government
Which is NOT a responsibility of the Department of Energy? A. To formulate national energy policy B. To research and develop nuclear and energy technology C. To regulate the distribution of electricity and natural gas =D. To oversee the construction of national highways I ...
December 5, 2013 by Rodrigo Martinez

math 157
The following are prices (in dollars) 2004 automobiles, as listed in a sale ad in the automobile section of the newspaper: 12,997 14,891 18,666 21,799 17,495 17,266 21,517 14,414 14,257 15,634 15,734 27,825 28,015 19,514 14,182 19,135 19,555 12,333 7,700 9,898
June 11, 2010 by Deidre

physics
If the ultimate shear strength of steel is taken to be 2.00 109 Pa, what force is required to punch through a steel plate 1.60 cm thick? Assume the superhero's fist has cross-sectional area of 1.20 102 cm2 and is approximately circular. answer in Newtons
November 6, 2010 by john

Science
Distinguish between high-quality energy and low-quality energy, and give an example of each. Relate these terms to energy efficiency. Frankly, these terms could mean anything. In my electrical engineering career, high quality energy was a high thermal capability with very low ...
February 9, 2007 by Christy

physics
If a 648 N body on a carpeted surface has a μs of 0.86 and a μk of 0.68, what amount of force will be required to start dragging the body across the floor? Make sure to report your answer with the correct number of significant figures
November 5, 2014 by Linda

physics
In designing access ramp for a shopping mall , it is desided that maximum force required by someone pushing a person in a wheelchair of total mass 90kg should be 80newter .calculate maximum angle for ramp
February 10, 2016 by Anonymous

English
(1) Brenda would have liked to have taken her vacation at the beach. (2) However, the weather forecast on the television called for rain. (3) Also, her fiancé, Max, wanted to vacation in the mountains. (4) After a heated discussion, Brenda and Max decided to compromise. (5) ...
May 14, 2013 by NANA

Health
How will employees in the medical office have to be trained regarding privacy(for example, who is responsible for training and record keeping)? What is required if an employee doesn't follow the privacy policy? When must employees be trained? In what manner?
July 28, 2009 by Anonymous

Properties of the ceramic ball mill
The structure of Ceramic Ball Mill: Ceramic Ball Mill is mainly composed of a driving device, a cylinder body device, feeding device, discharging device and an electrical control device.Ceramic Ball Mill load is large, the power consumption is large, so the ceramic ball mill ...
August 20, 2012 by jiandan

Biology
Which of the following must occur for a plant or animal to grow and develop normally? a) Sufficient oxygen must be available to stimulate cell division. b) Theorganism must recive a supply of the appropriate horones from its parents. c) It must be able to control the timing ...
November 13, 2009 by Terrye

algebra
Keith needs to drive 16 miles to work. So far, he has driven 5.8 miles. How many more miles must he drive?
September 15, 2015 by Yeniluz

math
debra needs to drive 14 miles to work.So far she has driven 6.7 miles.How many more miles must she drive
November 15, 2016 by shun

Physics
Thank you for answering my previous questions! I have another one now in regards to the following question... An unknown potential difference exists between the inner and outer surfaces of the membrane of a cell. The inner surface is negative relative to the outer surface. If ...
February 28, 2010 by Sandra

college algebra
A steel drum in the shape of a right circular cylinder is required to have a volume of 100 cubic feet. express the amount of material required to make the drum as a function of the radius r of the cylinder. also how much material is required if the drum is of radius 3 feet?
February 27, 2012 by Carol

english
You need to explain applications: I assumed you were describing visa applications. Should applications from certain countries be given priority? College applications? This is a sensitive subject but in my opinion, yes. I found it extremely valuable to study alongside other ...
October 29, 2006 by bobpursley

readability formulas
readabilty formulas can any one explain to me what i need to do to find a readaiblty formulas to this scenario: The trip scheduled for mexico during spring break has been canceled due to the bankruptcy of the bus company. you must tell 25 of your classmates that the trip has ...
July 17, 2006 by kathy

precalculus
Three friends want to share a circular 12-inch pizza equally by exactly only two parallel cuts. How far from the center must the cuts be? Hint: The pizza is a circle of radius 6 inches.
October 26, 2014 by michael

PHYSICS!!
It is 5.0 km from your home to the Physics lab and your car is out of gas. You could run that distance at 10 km/h, which uses up energy at the rate of 700 W; or you could walk it leisurely at 3.0 km/h, which uses energy at 300 W. (a) Calculate how much energy both choices ...
April 4, 2016 by Vanessa

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