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October 31, 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: 45,729

physics
A 14 N force with a fixed orientation does work on a particle as the particle moves through displacement d = (2i - 4j + 3k) m. What is the angle between the force and the displacement if the change in the particle's kinetic energy is (a) +7.54 J and (b) -7.54 J?
October 18, 2010 by Sam

physics
A worker pushes a wheelbarrow with a force of 40 N over a level distance of 6.0 m. If a frictional force of 24 N acts on the wheelbarrow in a direction opposite to that of the worker, what net work is done on the wheelbarrow?
November 17, 2010 by Anonymous

high school
The earth exerts a force of 1400 N on an orbiting communications satellite that is 35 mi above the Earth. What is the magnitude of the force the satellite will exert on the earth? Answer in units of N.
December 16, 2010 by Sangita

physics
A force, F = (2x + 5y) N, is applied to an object at a point whose position vector with respect to the pivot point is r = (2x + 4y + 5z) m. Calculate the torque created by the force about that pivot point.
March 25, 2011 by HELP!!!!

physics
A 11.0 kg box is resting on a horizontal table. The box is pulled directly upward by a 33.0 N force. Calculate the magnitude of the normal force being exerted on the box by the table.
January 12, 2012 by Anonymous

physics
The force of gravity at Earth's surface on an astronaut is 634N. What is the force of gravity on the same person at each of the following distances, in multiples of Earth's radius, from the centre of Earth? A)2 B)5 C)10 D)17.2
April 2, 2012 by Melissa

physics
A 13 N force with a fixed orientation does work on a particle as the particle moves through displacement . What is the angle between the force and the displacement if the change in the particle's kinetic energy is (a) +9.19 J and (b) -9.19 J?
October 17, 2012 by Science

simple PHYSICS!
The combination of the force of gravity and my hand provide a net force of 40 N on a ball straight up. The ball accelerates at 100 m/s^2 while it is in my hand. What is the mass of the ball in kg?
March 20, 2013 by please..anyone help!!

physics
A string is stretched between two supports that are L = 0.9 m apart. It resonates at a frequency of f = 410 Hz with a standing wave pattern that has two nodes between the two supports. (a) Find the wavelength λ in meters. (b) Suppose that the tension, T, in the string is ...
December 12, 2010 by sarah

physics
Airplanes are noisy things. For example, if you stand really close to a runway, a military jet can produce a sound intensity of about 100 W/m2 at a distance of 30 m from the plane (this is beyond painful noise). You live near a military airport and want to work on physics with...
March 29, 2013 by ayan

physic
Hi!Question:The helicopter view in the fiure below shows two people pulling on a stubborn mule. Asume that F1 is 110N, and F2 si 70N. The forces are measured in units of newtons(N). a.Find the single force that is equivalent to the two forces shown. magnitude____N ...
September 30, 2009 by Chan

physics
A 3.0-kg block is on a frictionless horizontal surface. The block is at rest when, at t = 0, a force (magnitude P = 2.0 N) acting at an angle of 22° above the horizontal is applied to the block. At what rate is the force P doing work at t = 2.0 s? A. 2.3 W B. 2.0 W C. 1.4 W D...
April 27, 2010 by qambar

physics
Calculate the difference between the magnitude of the gravitational force and the magnitude of the normal force exerted on a 100 kg object at the equator. Which of the two forces is equal in magnitude to the weight of the object?
December 5, 2011 by Alex

Physics
A force compresses a bone by 0.10mm. A second bone has the same length but twice the cross-sectional area as the first. By how much would the same force compress the bone?
December 9, 2012 by Caroline

College Physics
A force, F = (2x + 3y) N, is applied to an object at a point whose position vector with respect to the pivot point is r = (5x + 4y + 2z) m. Calculate the torque (in units on Nm) created by the force about that pivot point.
November 3, 2013 by Kimmy

physics
jabu phuses a cart that is of mass 5kg with a speed of 1m,s she suddenly increase the force acting on the cart to move 2m,s for a distance of 50m (a)calculate the force causing the cart to speed up
April 15, 2014 by timothy

Science Physics
Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.
May 17, 2014 by Peg

Physics
A med tech student pushes a 30-kg carton of books across the floor of her dormitory by exerting a constant force of 185 N at an angle of 37 degrees with the horizontal. If the opposing force of friction is 70 N, how much work does he do as he moves the carton in 4m in 15s? ...
February 6, 2012 by Paul

Physics
A 19000 kg sailboat experiences an eastward force 16400 N due to the tide pushing its hull while the wind pushes the sails with a force of 55200 N directed toward the northwest (45 ◦ westward of North or 45 ◦ northward of West). What is the direction of the ...
September 29, 2012 by Joe Rogers

physic 1
A Mercedes-Benz 300SL (m = 1700 kg) is parked on a road that rises 15 degrees above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires? Important: Assume that the road is higher up to the ...
February 13, 2014 by Anonymous

physics
A Mercedes-Benz 300SL (m = 1700 kg) is parked on a road that rises 15 degrees above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires? Important: Assume that the road is higher up to the ...
February 18, 2014 by Anonymous

physics
14)The cable of the elevator you are riding in breaks and the elevator begins to freefall at terminal velocity to the ground. Why would jumping up right before impact still not help you survive? A)Because your overall inertia is down B)Because you would be accelerating up C)...
April 1, 2008 by Jon

Physics
I had to graph the following data and find the slope: Normal Force: Frictional Force: 0 0 2.0 0.6 6.0 1.8 9.0 2.7 10.0 3.0 The slope was 0.30. The question that I am confused on is what does this graph's slope represent?
June 24, 2009 by Jack

college
The earth exerts a force of 2500 N on an or- biting communications satellite that is 30 mi above the Earth. What is the magnitude of the force the satellite will exert on the earth? Answer in units of N.
February 10, 2010 by zero

physics
A 50-kg penguin stands on ice. A helium balloon is attached to the penguin by means of a harness and pulls upward with a force of 90 N. What is the normal force of the ice on the penguin?
February 25, 2011 by Nolan

cal
The force on an object is F=−20j. For the vector v=−5i−4j, find: (a) The component of F parallel to v: (b) The component of F perpendicular to v: The work, W, done by force F through displacement v:
September 17, 2011 by Anonymous

physics
The combination of the force of gravity and my hand provide a net force of 40 N on a ball straight up. The ball accelerates at 100 m/s2 while it is in my hand. What is the mass of the ball in kg?
March 18, 2013 by ayan

physx!!!!
The combination of the force of gravity and my hand provide a net force of 40 N on a ball straight up. The ball accelerates at 100 m/s^2 while it is in my hand. What is the mass of the ball in kg?
March 18, 2013 by please..anyone help!!

physics
a space probe launched from earth and orbits at a distance of 15,000 m from earth's center, the gravitational force is 500 N. What is the size of force when it is 25,000 m from earth.
November 5, 2013 by Bill

Physical World Concepts
A rope is attached to a block that has a weight of 120N. When the rope exerts an upward force of 250N on the block, what is the net force on the block?
May 13, 2014 by Anomynous

Physic
Three balls are attached to a light rigid rod, as shown in the figure. A fulcrum is located at xf = 18.0 cm measured from the left end of the rod. Ball A has mass mA = 65 g and is located at xA = 3 cm. Ball B has mass mB = 12 g located at xB = 22 cm. Ball C has mass mC = 22 g ...
March 3, 2011 by panda

Physics(Help!!!!)
A person of mass m2= 85.0 kg is standing on a rung, one third of the way up a ladder of length d= 3.0 m. The mass of the ladder is m1= 15.0 kg, uniformly distributed. The ladder is initially inclined at an angle θ= 35.0∘ with respect to the horizontal. Assume that there is ...
December 9, 2013 by keitanako

Physics
Two blocks (on top of one another), each of mass m = 2.4 kg, are pushed along the horizontal surface of a table by a horizontal force of magnitude 6.8 N, directed to the right. The blocks move together to the right at constant velocity. (a) Find the frictional force exerted on...
September 27, 2011 by Kellie

Physics
Consider the collisions between a car and a truck whose weight is much heavier than the car (M ≫ m). Friction is so small that it can be ignored. If they are both moving at the same speed when they collide, what best describes the size (or magnitude) of the forces ...
October 14, 2012 by Amelia

Physics
If we examine a ball in free fall, we find that the momentum of the ball is not constant. This is not a violation of the law of conservation of momentum because A) the force of gravity acts on the ball. B) the ball experiences an external force. C) the system is not closed. D...
November 29, 2011 by Crystal

URGENT SUMMER SCHOOL CALCULUS
A force of magnitude 15 N is the resultant of two forces, one of which has a magnitude of 8 N and acts at an angle of 30° to the resultant. Find the magnitude and direction of the other force...how do I begin to solve this!?
June 29, 2008 by Derek

Physics
Force F causes displacement d of a 20-Kg object starting from rest along a frictionless path. F= 10 N i + 50 N j + 15 N k and d= 10 m i + 60 m k A) Calculate the work done by the force. B) Calculate the angle between the vectors F and d. C) Calculate the final speed of the ...
April 22, 2009 by Sandhya

physics
A sled is pulled at a constant velocity across a horizontal snow surface. If a force of 100 N is applied to the sled at an angle of 40 degrees to the ground, what is the force of friction between the sled and the snow?
October 26, 2009 by Brittany

Physics
4) A 1200 kg car is accelerating at 1.6 m/s2. If the coefficient of friction of friction is 0.15, what is the force applied to the car by the engine? here do you use the equation kinetic friction= μk(normal force) and put in 1.6 m/s^2=.15(Fn) is this how you go about it?
October 31, 2009 by Anonymous

Physics
A 0.50m long wire is carrying a current of 8.0A toward the east. The wire passes through a magnetic field of 0.40T toward the north. What is the force which acts on the wire? What is the direction of the force.
May 5, 2010 by Javier

chem, help please
A 0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. The velocity of the rock is 4.50 m/s. What is the centripetal force acting on the rock? how do i find centripetal force??
November 19, 2010 by Jon

physics
A 100 N force is applied to the side of a crate resting on a level floor. The crate has a mass of 50 kg. If the coefficient of static friction is ìs = .25, is the 100 N force enough to make the crate accelerate? Explain why or why not.
November 13, 2011 by Anonymous

physics
A 20.7 cm screwdriver is used to pry open a can of paint. If the axis of rotation is 2.25 cm from the end of the screwdriver blade and a force of 29.3 N is exerted at the end of the screwdriver’s handle, what force is applied to the lid? Answer in units of N
November 4, 2012 by Krystal

Physics
Problem 1- A 0.5 kg ball is moving to the right at 5 m/s when it is suddenly collide by a wall that exerts on it a horizontal force of 2.5 N for a period of 0.8 s. a) What is the impulse does the force of the wall exert on the ball? b) What is the velocity of the ball after ...
January 12, 2014 by Mariam

physics
A 1,500 kg car starts from rest and accelerates to a speed of 12 m/s over a distance of 68 m a) calculate the total work on the car b) calculate the net force that caused the car to accelerate (constant force)
May 4, 2014 by cee

ALGEBRA
A hardware supplier manufactures three kinds of clamps, types A, B, and C. Production restrictions force it to make 10 more type C clamps than the total of the other types and twice as many type B clamps as type A clamps. The shop must produce 250 clamps per day. How many of ...
March 28, 2012 by AMBER

Math
8. Isabel found three pieces of cable in her tool drawer. Here are their lengths (in meters). 10.43 ,13.2 ,9 What is the total length of the three pieces? 9. Lashonda needs to drive 20 miles to work. So far, she has driven 2.6 miles. How many more miles must she drive? 10. ...
May 2, 2012 by Kiki Wilson

Precalculus
Okay I am soo confused with these two questions: The resultant of two forces acting on a body has a magnitude of 80 pounds. The angles between the resultant and the forces are 20° and 52°. Find the magnitude of the larger force. Without the wind, a plane would fly due east at ...
August 9, 2011 by Hanson

Physics
A lens with a focal length of 25 cm is placed 45 cm in front of a lens with a focal length of 5.0 cm. a) How far from the second lens is the final image of an object infinitely far from the first lens? b) Is the image in part a in front of or behind the second lens?
February 23, 2013 by Cassie

physics
a giant crane was tested by lifting 2.232*10^6 kg load.find the magnitude of the force needed to lift the load with a net acceleration of 0m/s^2. if the same force is applied to pull the load up a smooth slope that makes 30 degrees with the horizontal, what would be the accel
December 17, 2009 by bandit

physics
a giant crane was tested by lifting 2.232*10^6 kg load.find the magnitude of the force needed to lift the load with a net acceleration of 0m/s^2. if the same force is applied to pull the load up a smooth slope that makes 30 degrees with the horizontal, what would be the accel
December 17, 2009 by bandit

Physics- due tomorrow
Two wires have current both running in the positive x direction as shown in the diagram with I1 = 13.9 amps and I2 = 4.5 amps. They are separated by a distance of d = 4.7 meters. A third wire with I3 = 10 amps is placed somewhere between the two wires with current running in ...
March 24, 2010 by Justin

physics
a pulley with rotational inertia of 1.5 times 10 ^-3 kg times m^2 about its axle and a radius of 15 cm is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F=.5t + .3 t^2, where F is in newtons and t in seconds. The pulley is initiall ...
January 28, 2008 by matt

science
wer learning about levers i science and i just get confused with the third class levers can some one explain how you figure out were the input force and output force go on all three and how you can remember it -THANKS Bills Luver
April 27, 2010 by bills luver

college physics
find the frictional force exerted on a 20kg block pulled slowly over a horizontal floor using a rope which makes a 30 degree angle over the horizontal. the pulling force is 100N??? i found the Fn to be 146 N what do i do from there?
June 10, 2010 by josh

Physics
A motor vessel tows a small dinghy by a rope which makes an angle of 20 degrees with the horizontal. If the tension in the rope is 15 kgf ;find a) the force which effectively pulls the dinghy forward. b)the force which lift its bows out of the water.
January 10, 2011 by Asamoah

physic
4. If the same two dust particles have -1.0 x 10-10 C of charge on one, and +3.2 C x 10-10 C on the other, what is the force between them now? If the force is pushing them apart, show it as a positive number and if it is attracting them together, show it as a negative number. ...
January 21, 2011 by sabrina

Physics
A 1.00e2kg crate is being pushed across a horizontal floor by a force of P that makes an angle of 30.0 degrees below the horizontal. The coefficient of Kinetic Friction is 0.200. What should be the magnitude of P, So that the network done by it and the Kinetic Frictional Force...
February 26, 2012 by Natasha

physics
The mass of the heavier block is 28 kg and the mass of the lighter blocks is 14 kg and the magnitude of the force of the connecting string on the smaller block is 24 N. Assume: g = 9.8 m/s^2 and the horizontal surface on which the objects slide is frictionless. Determine the ...
September 28, 2012 by michelle

Physics
A 1.60 102-kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.200. What should be the magnitude of , so that the net work done by it and the kinetic frictional force is zero?
November 17, 2012 by Anonymous

physics
At time t=0, a 2150kg rocket in outer space fires an engine that exerts an increasing force on it in the +x-direction. This force obeys the equation Fx=At2, where 1.45s is time, and has a magnitude of 781.25N when t = 1.45s . Find the SI value of the constant A.
September 28, 2013 by lhyra

math
Forces are applied to two ropes which are attached to the bumper of a stalled car. If F1 = 100 lbs at an angle of θ1 = 58 degrees, find the necessary magnitude and direction of force F2 so that the resultant force is 190 lbs in the direction shown.
December 6, 2013 by nick

physics
A plane leaves Seattle, flies 84.0{\rm mi} at 21.0^\circ north of east, and then changes direction to 52.0^\circ south of east. After flying at 120{\rm mi} in this new direction, the pilot must make an emergency landing on a field. The Seattle airport facility dispatches a ...
August 9, 2012 by Julio

physics
Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1500 m due east and then turns due north and travels another 1430 m before reaching the campground. The second cyclist starts out by heading due north ...
September 16, 2010 by john

PHYSICS-HELP!!
Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1500 m due east and then turns due north and travels another 1430 m before reaching the campground. The second cyclist starts out by heading due north ...
September 16, 2010 by JENNA

Chemistry
Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq). (a) What is the initial pH of the 0.20 M C6H5COOH(aq)? (b) What is the pH after the addition of 15.0 mL of 0.30 M KOH(aq)? (c) What volume of 0.30 M KOH(aq) is required to reach halfway to the ...
November 3, 2010 by Alania

English 9
I have to rewrite sent. to fix misplaced and dangling phrases. 1. To become an outstanding all-around player like Lambert, many hours of training are required. My revised sent is... Many hours of training are required to become an outstanding all-around player like Lambert. ...
October 9, 2014 by Sweet Pea

physics
Which of the following is correct for the charge in a magnetic field? Choose one answer. a. A stationery charge can experience a force in a magnetic field. b. A moving charge parallel to the direction of the magnetic field can experience a force. c. A moving charge ...
June 4, 2011 by ashley --- HELP PLEASEE!!!

bio
How does active transport differ from passive transport? 1. Molecules move down a concentration gradient in active transport. 2. Carrier proteins are used only in active transport. 3. Energy is required only in active trans- port. 4. Energy is required only in passive trans- ...
February 19, 2012 by anmol

physics/ conversions
Please check these problems. 1. 92 X 10^3 km ---> dm My answer: 9.2 X 10^8 dm 2. 5.52 X 10^8 g ---> kg My answer: 5.52 X 10^11 kg 3. 8.66 X 10^-9 m ---> mm My answer: 8.66 X 10^-12 mm 4. 1 um ---> m My answer: 1 X 10^-6 m Thanks. 1 and 4 are correct. No so for 2 ...
September 21, 2006 by Anonymous

spanish
Using the subject “usted” and the verb in the imperative, tell your instructor three things she or he must do. Then tell your instructor two things she or he must not do. You will be graded on accuracy and pronunciation. Provide your sentences in Spanish.
April 18, 2011 by Anna

Chemistry
A solution contains 0.133 g of dissolved Lead. How many moles of soduim chloride must be added to the solution to completly precipitate all of the disolved lead? What mass of sodium chloride must be added?
May 14, 2011 by Katie

spanish
Using the subject “usted” and the verb in the imperative, tell your instructor three things she or he must do. Then tell your instructor two things she or he must not do. You will be graded on accuracy and pronunciation. Provide your sentences in Spanish.
April 7, 2014 by Kimberly

Physics
When the space shuttle (mass of the shuttle = 2 x10^6 kg) was at the outer limit of Earth's atmosphere (distance = 350 km above Earth's surface), astronauts measured the gravitational force from Earth to be equal to 1.7 x 10^7 newtons. Assuming that both Earth and the shuttle ...
May 20, 2012 by Leila

busiess communication
. In which of the following situations would using the word "you" typically NOT be appropriate? (Points: 5) When you must inform a subordinate that she has inadvertently made a costly error When you must inform a subordinate that you have passed her idea on to your superior ...
June 3, 2011 by Anonymous

English
A: May I bring a radio on a camping trip? B1: No, you must bring it. B2: No, you must bring one. (Which answer is right? Do we have to use 'one' or 'it' as the answer to the question?)
November 16, 2008 by John

Math
Graph and identify the coordinates of a rectangle with a length of at least 5 units and a width of at least 2 units. Each vertex of the rectangle must be in a different quadrant. Two of the points must have rational coordinates that are not integers.
May 13, 2013 by Bell

Math
1. Graph and identify the coordinates of a rectangle with a length of at least 5 units and a width of at least 2 units. Each vertex of the rectangle must be in a different quadrant. Two of the points must have rational coordinates that are not integers
May 1, 2014 by Anny

chemistry
a fire extignuisher produces carbon dioxide by the reaction between sodium hydrocarbonate and sulfuric acid. if a fire extinguisher is desgined to hold 600.0g of sodium hydrocarbonate calculate : the mass of sulfuric acid required to react with sodium hydrocarbonate AND ...
April 17, 2010 by sarah

Spanish #2
Can someone please check my work? Answer the following questions in a complete sentence. 1. ¿Qué estación te gusta más? A mí me gusta la estación de la primavera más....(how would you say, 'more than the other seasons' OR can I just leave it as it is?) 2. ¿Qué ropa te gusta ...
April 2, 2009 by Larry

chemistry
You are tasked with preparing a 500mL nutrient solution containing 5mg/L of phosphorous (P), 3mg/L nitrate (NO3 -) and 100 mg/L chloride (Cl-). To make this solution, you have powdered sodium chloride, a 100 mg/L solution of phosphorus, a 1000 mg/L of sodium nitrate (NaNO3) ...
January 13, 2014 by Bruce

physics
we can say that the force of gravity is equal to mass times acceleration were the acceleration is equal to gravity sense gravity is an acceleration because of newtons second law force = mass times acceleration hence Fg = mass times acceleration Fg = mass times gravity Fg = mg ...
September 12, 2009 by physics

Trigonometry
1. Ben is pulling on a tobaggan rope with a force of 250 newtons. The rope makes a 36 angle with the ground. What force is actually working to move the tobaggan to the right? 2. If a boat going 6 mi/hr in still water suddenly encounters a crosscurrent of 4 mi/hr, at what angle...
September 21, 2006 by Lisa

Physics - Tension
Two blocks are connected by a string and are pulled vertically upward by a force of 165 N applied to the upper block. (here is a rough diagram) ^ (F=165 N) I [block] ( <- 2.00 kg) I [block] ( <- 1.00 kg (a) Find the tension T in the string connecting the blocks. (b) If ...
February 19, 2013 by Wes

english
The Nymph's Reply to the Shepherd by Sir Walter Raleigh 1600 If all the world and love were young, And truth in every shepherd's tongue, These pretty pleasures might me move To live with thee and be thy love. Time drives the flocks from field to fold, When rivers rage and ...
March 7, 2011 by anthony

chemistry
3 part question If an object is completely submerged in a liquid, what volume of liquid does the object displace? List the special waste disposal instruments that must be followed. List the special safety precautions that must be taken.
February 4, 2014 by CeeCee

tough question
Why in the Emancipation Proclamation did Lincoln make exceptions to certain areas (I am not talking about the Border States that remained loyal and did not cede, but there were other areas also, like New Orleans, York, St.Bernard, St.Charles, and some others.) See....why would...
February 1, 2007 by jessca

physic
Before practicing his routine on the rings, a 67 kg gymnast hangs motionless, with one hand grasping each ring and his feet touching the grounnd. Both arms make an angle of 24 degrees with the vertical.(a) If the force exerted by the rings on each arm has a magnitude of 290 N...
November 6, 2011 by taylor

physics
A 34.2 -kg block rests on the oor. (a) What force (N) does the oor exert on the block? (b) If a rope is tied to the block and run vertically over a pulley, and the other end is attached to a free-hanging 5.6 kg weight, what force (N) does the oor now exert on the block? (c) If...
August 6, 2011 by waqas

HIPAA repsot
ok this what I have now please let me know what you think thanks so much Congress implemented the Health Insurance Portability and Accountability Act (HIPAA), which enables individuals to have more control over their own health information. This helped to establish clear lines...
August 10, 2008 by kaleigh

Dynamics
True or false (Each question carries 1 marks) (i) A rigid body is an idealization of the behavior of a body. (ii) A Geo-stationary satellite follows a circular orbit at a unique and has a time period of 24h. (iii) Constancy of areal velocity for a central force motion of a ...
July 31, 2012 by Rajan

physics
i apply an 800 N force to the crate a. how long would it take the crate to travel 20m across the warehouse floor(in the direction that i am pushing it)? b. what is the magnitude and direction of the force of friction acting on the crate?
November 5, 2010 by Jane

physics
i apply an 800 N force to the crate a. how long would it take the crate to travel 20m across the warehouse floor(in the direction that i am pushing it)? b. what is the magnitude and direction of the force of friction acting on the crate?
November 7, 2010 by Anonymous

physics
A wooden box weighing 281 N is pushed across the floor by a workman who exerts a horizontal force of 166 N. If the force of friction between the box and the floor is 21 N, what is the acceleration (in meters/second^2) of the box?
March 8, 2011 by nm

physics
wooden box weighing 271 N is pushed across the floor by a workman who exerts a horizontal force of 144 N. If the force of friction between the box and the floor is 28 N, what is the acceleration (in meters/second^2) of the box?
March 1, 2012 by Anonymous

physics
A wooden box weighing 271 N is pushed across the floor by a workman who exerts a horizontal force of 144 N. If the force of friction between the box and the floor is 28 N, what is the acceleration (in meters/second^2) of the box?
March 7, 2012 by phil

physics
A box of mass 18.8 kg is pulled to the right with a horizontal force of 9 N. If the box moves to the right with a constant velocity of 1.06 m/s, what is the frictional force acting on the box?
November 16, 2009 by Jimmy

Physics
A forward force of 8X102 Newtons is applied to a 1.9x103 kg car. If the friction force on the car is 6x102 Newtons what is the acceleration of the car in units of m/s2?
January 3, 2010 by Aly

science
The earth exerts a force of 2200N on an orbiting communications satellite that is 35mi above the earth..What is the magnitude of the force the satellite will exert on the earth??
March 11, 2010 by Elver Gon

Physics
A 20 N force acts on a 10 kg object parallel to the object's displacement. If the force acts for 32 m, what is the final kinetic energy, in J, of the object assuming it starts from rest?
July 2, 2012 by Megan

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