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October 2, 2014

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: 44,947

Physics
A 1100-kg car is being driven up a 4.0° hill. The frictional force is directed opposite to the motion of the car and has a magnitude of f = 518 N. A force is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on ...
March 12, 2012 by Natasha

physics
A 1100-kg car is being driven up a 4.0° hill. The frictional force is directed opposite to the motion of the car and has a magnitude of f = 518 N. A force is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on ...
March 13, 2012 by Natasha

physics
A 1100-kg car is being driven up a 4.0° hill. The frictional force is directed opposite to the motion of the car and has a magnitude of f = 518 N. A force is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on ...
March 13, 2012 by Natasha

physics
A 1310-kg car is being driven up a 9.12 ° hill. The frictional force is directed opposite to the motion of the car and has a magnitude of 541 N. A force F is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on ...
July 8, 2013 by billy

Physics
Compare the gravitational force on an 11 kg mass at the surface of the Earth (with radius 6.3 X 10^6 m and mass 6 X 10^24 kg) with that on the surface of the Moon (with mass 1/81.3 ME and radius 0.27 RE). What is the force on the Earth? What is the force on the moon?
February 20, 2011 by Maddy

Physics
Compare the gravitational force on an 11 kg mass at the surface of the Earth (with radius 6.3 X 10^6 m and mass 6 X 10^24 kg) with that on the surface of the Moon (with mass 1/81.3 ME and radius 0.27 RE). What is the force on the Earth? What is the force on the moon?
February 20, 2011 by Maddy

chemistry
An automobile maker has an order for 7,500 new cars to be delivered in one week. Each car must be fitted with a new hood ornament that requires 1 hour and 15 minutes to install. Assuming the factory operates on a standard workweek shift (8 hours per day for 5 days), how many ...
August 20, 2013 by s

physics
The homework question asks: which work woulf be required to stop a moving object: the intial speed, the intial kinetic energy of the object, the mass of the object times it acceleration, the mass of the object times its intials speed, or the square of the intial speed of the ...
November 5, 2006 by tatiana

MATH
the demand equation for a certain type of printer is given by D=-200pt 35,000
March 28, 2008 by darren-help

government
What are different types of legislations, and how do I decide which one is linked to certain issues?
September 10, 2008 by Anonymous

Physics
I dropped an object from a certain height and gravity was acting on it. What type of motion is that and how do I know this?
April 1, 2009 by Lena

social studies
Why do many religions require their followers to fast at certain times of the year?
October 4, 2009 by Alyssa

science
All living things respond in certain ways to _____ in their environment.
August 18, 2010 by mary

cultrual diversity
Should applications for immigration be given priortiy for certain countries?
July 7, 2011 by florence

ETH125
what changes has the US made to certain polices concerning the treatment of Muslims and Arabs?
August 25, 2011 by Sandra

trig
If the line OP of radius and(x,y) is rotated through a certain angle about the oringin
January 24, 2012 by Makhaya khoza

physical science
a certain amount of water freezes and the resulting weight of the ice is
June 28, 2012 by lora

chemistry
certain electromagnetic wavelenght radiation has frequency of 98hz .what will be its wave lenght?
October 6, 2012 by viraj dahane

socials 11
Why did entering no mans land come to mean almost certain death?
July 4, 2013 by alyssa

math
there are 36 carpenters in a crew. on a certain day, 29 were present. what percent showed up for work?
August 10, 2013 by sonia

socialstudies
do yov think there are certain othe7r aspects otheqr than those dpi
July 3, 2014 by naveen

business law
Which of following is true about the capital contributions of members to an LLC? a) Capital contributions must be made in the form of Cash. b)An unfulfilled promise to make a capital contribution is generally unenforceable. c)Members are required to make equal contributions in...
April 12, 2007 by singh

business law
Which of following is true about the capital contributions of members to an LLC? a) Capital contributions must be made in the form of Cash. b)An unfulfilled promise to make a capital contribution is generally unenforceable. c)Members are required to make equal contributions in...
April 12, 2007 by singh

English
17a. Each of the applicants must submit his or her completed form to the interviewer. 17b. Each of the applicants must submit their completed forms to the interviewer. I chose A. is that right? please explain.
April 28, 2008 by Tami

Physics
292 kg motorcycle is accelerating up a ramp that is 30 degrees above the horizontal. Propulsion force pushing the motorcycle up ramp is 3150 N. Air resistance produces a force of 250 N that opposes the motion. Find that motorcycle's acceleration.
October 5, 2009 by Jenn

physics
A boy exerts a horizontal force of 2nt to pull his 2kg sled over the snow. If he gives someone a ride on his sled and he has to exert a 12nt force to pull the sled, how much does that person weigh and what is their mass?
January 11, 2011 by Elise

physics
A 0.025 kg golf ball moving at 27 m/s crashes through the window of a house in 5.0 10-4 s. After the crash, the ball continues in the same direction with a speed of 10 m/s. Assuming the force exerted on the ball by the window was constant, what was the magnitude of this force?
January 25, 2011 by jesse

MATH116
Two forces of magnitudes 60 Newtons and 80 Newtons make an angle of 30 with each other and are applied to an object at the same point. Find the following: 1. the magnitude of the resultant force, and 2. to the nearest degree the angle it makes with the force of 60 Newtons.
February 10, 2013 by Tricia

Physics
A 0.026 kg golf ball moving at 19.6 m/s crashes through the window of a house in 5.6 10-4 s. After the crash, the ball continues in the same direction with a speed of 8.2 m/s. Assuming the force exerted on the ball by the window was constant, what was the magnitude of this ...
March 17, 2013 by Anonymous

Maths A
For this question, use the copy of the Random Number table provided at the end of this AAT. (This table was copied from page 111 in the Textbook.) Select 48 values according to the following criteria. o The first thirty (30) numbers must lie in the range from 48 to 58 ...
February 25, 2013 by Anna

Physics
A river has a steady speed of 0.500 m/s.A student swims upstream a distane of 1.00 km and swims back to the starting point. If the student can swim at a speed of 1.20 m/s in still water, how long does the trip take? How much time is required in still water for the same length ...
February 13, 2014 by Anonymous

finance
pro forma financial statements are a. the most comprehensive means of financial forecasting b. often required by prospective creditors Thank you for using the Jiskha Homework Help Forum. Here is a definition of Pro Forma Financial Statements: Definition Financial statements as...
January 7, 2007 by evelyn

Algebra
You and your friend live 12 miles apart. You leave home at the same time and travel toward each other. You walk at a rate of 4 mph and your friend bicycles at a rate of 11 mph. A) How long after you leave home will you meet? How far from home will each of you be? B) Suppose ...
August 29, 2012 by Sylvie

math,correction
can someone correct this for me parts A-E and if i am wrong can you help me....please How many 7-digit telephone numbers are possible if the first digit cannot be zero and..... a) only odd digits may be used? my answer: 8125 b) the telephone number must be multiple of 10(that ...
July 6, 2007 by student

help...urgent..calculus..please show tthe way to s
Sony Ent. is marketing a new smartphone. It determines that in order to sell x smartphones, the price per product must be p=280-0.4x. It also determine that the total cost of producing x smartphones is given by c(x)=5000+0.6x^2 . a. Find the total revenue, R(x). b. Find the ...
December 15, 2012 by fafa

Math
A boat, whose speed in still water is 2.80m/s , must cross a 280m wide river and arrive at a point 120m upstream from where it starts. To do so, the pilot must head the boat at a 45.0 degrees upstream angle. What is the speed of the river's current?
September 12, 2009 by Anne

chemistry
Aluminum metal reacts with iron(III) oxide to produce aluminum oxide and iron metal. (a) How many moles of Fe2O3 are required to completely react with 55 g Al? mol (b) How many moles of Fe are produced by the reaction of 3.00 mol Fe2O3 and 97.7 g Al? mol (c) How many atoms of ...
September 25, 2010 by caroline

vector and mass
A particle of mass m kg is acted on by two forces F1 and F2 with magnitudes 3root5 newtons and root5 newtons ad drections parallel to the vectors i+2j and i-2j respectively The particle is initially at a position given by vector 2i+j iv calculated the cartesian components of ...
July 15, 2006 by rav

Physics
To win the game, a place kicker must kick a football from a point 19 m from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 16 m/s at an angle of 59.8 from the horizontal. The acceleration of gravity...
November 4, 2012 by ferras

Angular Velocity Question
A disk with a mass of 18 kg, a diameter of 50 cm, and a thickness of 8 cm is mounted on a rough horizontal axle as shown on the left in the figure. (There is a friction force between the axle and the disk.) The disk is initially at rest. A constant force, F = 70 N,is applied ...
October 25, 2010 by Oscar

Physics Grade 11
I need Help answering this question what equations do i use from Newton's Law and how to solve it. I Have a test on Wednesday and im lost please help.!!! A piano is to be slid across the floor.IT had a mass of 450 kg. A) Calculate the normal force supporting the piano. B)If ...
November 8, 2010 by Hena

AP chemistry
The specified heat capacity of silver is 0.24 J/C.g. Please help with this Ap chem quastion.? a. Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 298. b. Calculate the energy required to raise the temperature of 1.0 mol Ag by 1.0C (called the ...
October 23, 2010 by Nardos

AP chemistry
The specified heat capacity of silver is 0.24 J/C.g. Please help with this Ap chem quastion.? a. Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 298. b. Calculate the energy required to raise the temperature of 1.0 mol Ag by 1.0C (called the ...
October 23, 2010 by Nardos

surface energy budget
I'm give the following data: Q*, QG, QH, QE for a 24-hour period, i'm required to plot these 4 data on the same graph, which I've already done. I'm also required to compute these 24 hours totals - transfer of sensible heat to the atmomsphere - transfer of latent heat to the ...
October 2, 2006 by Fai

Math
A committee, which consists of two mathematicians and three scientists, will be formed from four mathematicians and six scientists. How many possible committees can be formed if : a. any of the mathematicians and scientists are included? b. one particular scientist must be in ...
February 21, 2013 by Penelope

English
Can you please help me annotated or make annotations for Robert E. Lee's Letter to his son. I have to make them because it will help figure what the meaning or purpose is behind this letter. Like certain phrases, or details with why it goes with this letter, their meaning, ...
September 2, 2014 by Amy

Science
Which of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. A blank is composed of the solvent used to dissolve the analyte. For this experiment, the solvent is a combination of sulfuric acid, phosphoric acid, and water. B. A ...
April 26, 2008 by John

physics urgent!
A vaulter holds a 34.1 N pole in equilibrium by exerting an upward force U with her leading hand and a downward force D with her trailing hand. Point C is the center of gravity of the pole. Given d1 = 1.100 m, d2 = 1.65 m, and d3 = 2.75 m, what are the magnitudes of U and D? i...
November 24, 2008 by tony

anatomy
In the body, lever systems involve the interaction of __1__, which provide the force, and __2__, which provide the lever arms. The force is exerted where __3__. The site at which movement occurs in each case is the intervening __4__, which acts as a fulcrum. 1. muscles? 2. ...
November 22, 2011 by Katie

physics
Two pellets, each with a charge of 0.80 microcoulomb (8.0×10−7 C), are located 4.0 cm (4.0×10−2 m) apart. Find the electric force between them, which I solved for 3.6 N. I am stuck on the next part: What would be the mass of an object that would experience this ...
April 17, 2012 by Christy

Physics
F1 and F2 are two horizontal forces of 70 N each, acting on a wagon. They are at 45° to the x-axis and at right angles to each other. A third force, F3, also 70 N, acts along the positive x-axis. What if, instead, F2 acted in the opposite direction from what is shown? Find the...
September 23, 2012 by arcos15

Science
A tug is capable of pulling a ship with a force of 100 KN. If two such tugs are pulling on one ship, they can produce any force ranging from a minimum of 0 KN to maximum of 200 KN. Give a detailed explanation of how this is possible. Use diagrams to support your result.
March 4, 2014 by Sello

phyisics
A computer to be used in a satellite must be able to withstand accelerations of up to 23 times the acceleration due to gravity. In a test to see if it meets this specification, the computer is bolted to a frame that is vibrated back and forth in simple harmonic motion at a ...
November 15, 2011 by christi

math
What is true for motion in a straight line. A. if a vechile has zero velocity , it must be stationary. B.the graph of position against time has to be a straight line. C.acceleration is the rate of change of speed. D.velocity is the rate of change of position. E.a reversing ...
May 16, 2010 by JAndu Andu

Finance
Cochrane, Inc., is considering a new three-year expansion project that requires an initial fixed asset investment of $1,860,000. The fixed asset will be depreciated straight-line to zero over its three-year tax life, after which time it will be worthless. The project is ...
March 24, 2014 by Alec

Physics
An object with a mass of 2.728x10^1 kg is subjected to a force of 1.31851x10^3 N directed at an angle of 1.056x10^1 degrees from the x axis. A second force of 1.93826x10^3 N acting in the negative Y directions is also applied to the object. To two significant figures what is ...
October 22, 2010 by christine

physics
A 16000 kg sailboat experiences an eastward force of 12400 N due to tide pushing its hull while the wind pushes the sails with a force of 51900 N directed toward the northwest (45 westward of North or 45 northward ofWest). What is the magnitude of the resultant ac- ...
October 17, 2012 by allie

chemistry
If the concentration of Pb2+ is found to be 2.3 x 10-9 mol/L in a saturated solution of Pb3(PO4)2, what is the Ksp of Pb3(PO4)2 ? This is my work thus far it is as far as I could get: Ksp = [Pb2+] [Pb3(PO4)2] = [2.3 x 10-9 mol/L][Pb3(PO4)2]
April 19, 2008 by Anna

physics
A 450 g block is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.670, and the coefficient of kinetic friction is 0.380. A force of magnitude P pushes the block forward and downward as shown in the figure below. Assume ...
October 19, 2011 by carlton

Math-Calculus
Consider two ships which are joined by a cable attached to each ship at the water line. Suppose the two ships are 200 metres apart, with the cable stretched tight and attached to a pulley which is anchored halfway between the ships at a depth of 45 metres. If one ship moves ...
April 3, 2013 by Zoe

Chemistry
A certain mine produces 2.5 108 kg of copper from chalcopyrite (CuFeS2) each year. The ore contains only 0.80% Cu by mass. (a) If the density of the ore is 2.0 g/cm3, calculate the volume of ore removed each year. (b) Calculate the mass of SO2 produced by roasting (assume ...
April 13, 2007 by Chemistry

Statistics
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey (randomly generated phone numbers were used) of ...
November 4, 2013 by Penny

Physics
"It takes a force of 109 N to lift a stone straight up. This force gives the stone an acceleration of 12 m/s^2. Calculate the mass of the stone." My physics teacher tried to explain this problem to us, but he explained it so confusingly that I still don't get it (if that made ...
October 29, 2007 by Emily

Physics 12th grade
A farm tractor is pulling 2 pieces of equipment east, with each piece of equipment 25 north and south of the x axis. If it takes 50,000 N of force on each chain to keep the equipment moving, then what is the total force of the tractor in the x direction?
September 26, 2011 by George

Physics HELP!
A block of mass 3 kg slides along a horizontal surface while a 20-N force is applied to it at an angle of 25°. If needed, use g = 10 m/s2. For a coefficient of kinetic friction of 0.3 between the block and the surface, the frictional force acting on the block is most nearly 9 ...
May 25, 2012 by Ashley

Physics
a) Why are there no units attached to values of μ? b)A force of 120 N is needed to push a box along a level road at a steady speed. If the force of gravity on the box is 250 N, what is the coefficient of kinetic friction between the box and the road?
September 29, 2012 by Hanu

physics
A force in the +x-direction with magnitude F(x)=18.0N−(0.530N/m)x is applied to a 7.60kg box that is sitting on the horizontal, frictionless surface of a frozen lake. F(x) is the only horizontal force on the box. If the box is initially at rest at x=0, what is its speed ...
March 19, 2014 by gzag

Physics
Two bicyclists, starting at the same place, are riding toward the same campground by different routes. One cyclist rides 1030 m due east and then turns due north and travels another 1480 m before reaching the campground. The second cyclist starts out by heading due north for ...
September 5, 2014 by Shant

math
two look out situations, which are 25 miles apart along the coast on a north-south shoreline, spot an approaching yacht. One lookout station measures the direction to the yacht at N33 degrees E, and the other station measures the direction of the yacht at S62 degrees E. How ...
March 7, 2010 by jay

trigonometry
2. two look out situations, which are 25 miles apart along the coast on a north-south shoreline, spot an approaching yacht. One lookout station measures the direction to the yacht at N33 degrees E, and the other station measures the direction of the yacht at S62 degrees E. ...
March 8, 2010 by bill

physics
A 57.0 kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 23.0 m. (a) What is the centripetal acceleration of the child? (b) What force (magnitude and direction) does the seat exert on the child at the lowest point of the ride? (c...
June 19, 2011 by Sarah

physics
A 316-kg boat is sailing 12.0° north of east at a speed of 1.60 m/s. 39.0 s later, it is sailing 36.0° north of east at a speed of 4.00 m/s. During this time, three forces act on the boat: a 31.4-N force directed 12.0° north of east (due to an auxiliary engine), a 20.7-N force...
September 14, 2012 by marissa

English
The following lines are from Alexander Pope's "An Essay on Criticism." In it, Pope (1688-1744) gives his opinions on the secret of good writing, opinions that were very consistent with his times. Answer all questions based upon these lines. Those RULES of old discover'd, not ...
November 16, 2011 by Anonymous

English
The following lines are from Alexander Pope's "An Essay on Criticism." In it, Pope (1688-1744) gives his opinions on the secret of good writing, opinions that were very consistent with his times. Answer all questions based upon these lines. Those RULES of old discover'd, not ...
December 6, 2011 by Anonymous

physics
A 110g hockey puck sent sliding over ice is stopped by a frictional force on it from the ice a) if its intial speed is 6.0m/s, what is the magnitude of the frictional force? b) what is the coefficient of friction between the puck and the ice? I am unsure how to solve the first...
November 19, 2006 by tina

physics
A force 1 of magnitude 5.40 units acts at the origin in a direction 45.0° above the positive x axis. A second force 2 of magnitude 5.00 units acts at the origin in the direction of the positive y axis. Graphically find the magnitude and direction of the resultant force 1 + 2.
September 12, 2012 by carlton

physics
A 4.0-kg block is stacked on top of a 12.0-kg block, which is accelerating along a horizontal table at a = 5.2m/s2 . Let u=uk=us. (a) What minimum coefficient of friction u between the two blocks will prevent the 4.0-kg block from sliding off? (b) If u is only half this ...
November 20, 2012 by Anonymous

English
I Need Help In English? First off, I'd like to introduce myself. My name is Anta and I'm currently a Senior and have to do this online course to graduate and I am basically left with no choice but to teach myself. The lesson I'm on now has been quite a challenge so far but I'm...
April 4, 2011 by Anta

science
A 2.7 kg box is released on a horizontal surface with an initial speed of 2.9 m/s. It moves on the surface with an acceleration of .27 m/s squared. Calculate the kinetic friction force on the box. The coefficent of the kinetic force is .156.
November 24, 2009 by Abby

physics
Newton assumed that a gravitational force acts directly between Earth and the Moon. How does Einstein's view of the attractive force between the two bodies differ from Newton's view?
January 16, 2010 by kendra

Physics
A charged particle A exerts a force of 2.39 ėN to the right on charged particle B when the particles are 13.3 mm apart. Particle B moves straight away from A to make the distance between them 16.1 mm. What vector force does particle B then exert on A?
February 6, 2010 by Jan

Physics
A force F=180 N pulls a crate at a 60 degree angle on a rough surface. The weight of the crate is 296 N and the friction force between the crate and the surface is 90 N. What state of motion might the crate be in?
October 23, 2010 by Lisa

physics
A car that weighs 15,000 N is initially moving at 60 km/hr when the brakes are applied. The car is brought to a stop in 30 m. Assuming the force applied by the brakes is constant, determine the magnitude of the braking force.
December 21, 2010 by miyako

Physics
A man using a 70 kg garden roller on a level surface exerts a force 20 kgf at 45 degrees to the ground . Find the vertical force of the roller on the ground if he ; a) pulls the roller. b) pushes the roller.
January 10, 2011 by Joseph

Physics (Force and Motion)
a 0.20 kg ball is released from a height of 10 m above the beach; the impression the ball makes in the sand is 5.0 cm deep while the ball stops uniformly. what is the force acting on the ball by the sand?
February 19, 2011 by Anonymous

vectors
A box weighing 20 N, resting on a ramp, is kept at equilibrium by a 4N force at an angle of 20 degrees to the ramp, together with a friction force of 5N, parallel to the surface of the ramp. Determine the angle of elevation of the ramp.
October 21, 2011 by Anonymous

Physics
A carefully designed experiment can measure the gravitational force between masses of 9 kg. Given that the density of iron is 7860 kg/m3, what is the gravitational force between two 9.00-kg iron spheres that are touching in N?
June 26, 2012 by Tim

Impact force
A 65.0 kg professional diver performs a dive from a platform 10 m above the water surface. Find the average impact force she experiences in her collision with the water if the collision lasts for 0.800 s.
October 21, 2012 by Anonymous

physics
A person exerts a force of 6.0 N at a point which is 90 cm from the hinged side of a door. If the torque is 5.2 N m then determine the angle between the force vector and the line that runs directly from the point to the hinged side.
December 11, 2012 by john

science
Using the equation: work = force x distance tell me how much work is done when a boy applies 5 Newtons of force over a distance of 2 meters. A)10 Watts B)10 Joules C)10 Amps D)10 Newtons
February 24, 2013 by faithwest98

Physics
If a Mack truck and Honda Civic have a headon collision, upon which vehicle is the impact force greater and which vehicle experiences the greater acceleration? I know they have same force.
March 1, 2013 by Sally

phys
A short 10-g string is used to pull a 50-g toy across a frictionless horizontal surface. If a 3.0 x 10^(–2)-N force is applied horizontally to the free end, the force of the string on the toy, at the other end, is: A) 0.15 N B) 6.0 x 10^(–3) N C) 2.5 x 10^(–2) N D) 3.0 x 10^(–...
March 8, 2014 by tony

physics
A hammer is being used to pull a nail out of a horizontal board. L = 32 cm and d = 5.2 cm. If a force of 158 N is exerted horizontally as shown, calculate the force (in N) exerted by the hammer claws on the nail.
May 8, 2014 by sydwell

physics
Which of the following correctly describe the gravitational attraction between Earth and the Moon? -The Earth and the Moon exert equal size gravitational forces on each other. -The gravitational force of the Moon on the Earth is towards the Moon. -Both the Earth and the Moon ...
October 4, 2012 by Emily

physics
a constant force can at on an object for diferrent lengths of time. as the length of time the force acts increases, the impulse imparted to the object increases decreases remians the same
January 5, 2011 by john

physics
The small piston has a diameter of 2cm and the large piston has a diameter of 6cm. How much more force can the larger piston exert compared with the force applied to the smaller piston?
January 28, 2011 by Anonymous

Science
In what way is erosion NOT like weathering? A)It is a force that changes the earth's surface B)It is a destructive force C)It changes rocks in some way D)It breaks down rocks I think D??
October 18, 2011 by Isaac

physics
A neighbor pushes a lawn mower on a lawn that is level with a force of 230 Newtons. If 45% of this force is directed downward, how much work is done by the neighbor in pushing the mower 8 meters?
December 2, 2011 by roshna

Physics
The space shuttle has a weight 2.00 x 10^7 N. The shuttle is accelerated upward at a rate of 5.50 m/s^2. What is the mass of the shuttle? What is the thrust (force) of the combined engines? What is the magnitude of the net force applied to the space shuttle?
December 7, 2011 by Hannah

university physics
Two forces act on a 4.00-kg object in a manner that the object has an acceleration 3.00 m/s2 in a direction 20.0° north of east. The first force is 15.00 N in a direction 10.0° west of north. What is the second force?
October 15, 2012 by mike

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