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January 28, 2015

Search: The force acting on a particle varies as shown in the figure. (The x axis is marked in increments of

Number of results: 33,225

physics
Find x-component of vector d=(110m , 46 degrees below + x-axis). Find y-component of vector d=(110m ,46 degrees below + x-axis). Find x-component of vector v=(350m/s , 28degrees above + x-axis). Find y-component of vector v=(350 , 28 above + x-axis). Find x-component of vector...
October 3, 2013 by Anonymous

Math
If the scale factor from a small figure to a large figure is given as a percent, how can you find the side lengths of the large figure from the side lengths of the small figure? PLEASE HELP ME!!! PLEASE HELP!!!!! THIS IS SOOOOO CONFUSING AND MY TEACHER NEVER REALLY EXPLAINED ...
January 4, 2007 by AJ

CUC
1.Two masses of 4gm and 6gm respectively are attached to the ends of a light rod of negligible mass and the rod rotates anticlockwise at the rate of 2rev/sec about an axis passing through the center of mass and perpendicular to its length. Calculate (a)the angular momentum of ...
May 26, 2012 by Theresa

Science
Can someone tell me how to figure this out. Fido weighs 120N & carries Trixie who weighs 40N on her back. The support force on fidos feet is. 160n - 40n - 120n -more than 160n
August 27, 2012 by Sue

Physics
A crate of mass 59 kg is attached to one end of a string, and the other end of the string runs over a pulley and is held by a person as in the figure below. If the person pulls with a force of 94 N, what is the crate's acceleration?
January 30, 2013 by Josh

physics
A 2 kg block is pushed 2 m along a fixed horizontal surface by a horizontal force of 20 N. The coefficient of kinetic friction of the surface is k= 0.40. (a) How much work is done by the 20 N force? (b) what is the work done by the friction force? (c) What is the total work ...
November 3, 2011 by pakilina

physics??
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a person situated (a) at ...
February 14, 2011 by Gina

physics
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a person situated (a) at ...
February 23, 2011 by heather

Physics
Hi, i need help on the following questions. Thank you. 1) The potential at location A is 441 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 805 V, and when released from rest from this spot...
September 19, 2006 by Kevin

stats
Question 5 of 10 Why are partial regression coefficients necessary in multiple regression? (Points : 1) Multiple variables each provide some of the same information. Each variable involved contributes a unique error component. Each variable involved is part of the intercept ...
July 20, 2014 by please help

Physics
A force sensor is used to measure a force applied to a 7.5 kg box on a hard, horizontal surface. It records that the box starts to move when the force is equal to 16.5 N. This force makes the box start to move with an acceleration of 0.5 m/s2. Find s and k respectively. I keep...
September 30, 2009 by Bella

physics
A steroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.5e4kg and the force causes the speed to change from 7100 to 5500m/s. (A) What is the work done by the force? (B) If the asteroid slows...
February 26, 2012 by Natasha

Physics
Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 22 m/s, and puck 2 has an initial speed of 14 m/s. They collide and stick together. Find the components along x and y of the initial velocities of both particles. v1xi = 19.1 m/s ...
November 14, 2010 by J Velji

Physics HELP A,S.A.P!
Q: Tarzan, who weighs 688N, swings from a cliff at the end of a vine that is 18m long. From the top of the cliff to the bottom of the swing, he descends by 3.2m. The vine will break if the force on it exceeds 950N. a)Does the vine break? b) If no, what is the greatest force on...
November 2, 2006 by Krystal

physics
What is the force on an electron moving at v = 2.5*10^5 m/s away from a long wire,3mm from the electron, carrying a 12 A current? Give the magnitude & direction of the force. I calculated mag induction using B = u0I/2(pi)*a and force on the electron using F = Bqv where q is ...
October 12, 2008 by Sandhya

Geometry (math)
Suppose line p is perpendicular to line s and line q is perpendicular to line s. are p and q parallel under all circumstances? Draw a figure to illustrate your answer . I doubt if we can post pictures on this,because my question asks to draw a figure.I seriously need an answer...
November 19, 2013 by Naila dar

Physics
A 4.0 kg block is stacked on top of a 12.0 kg block, whcih is accelerating along a horizontal table at a = 5.2 s^-2 m. Let Mu k = Mu s = Mu. (a) What mininum coefficent of friction Mu between the two blocks will prevent the 4.0 kg block from sliding off? (b) If Mu is only half...
August 20, 2009 by QUESTION

physics
You need to siphon water from a clogged sink. The sink has an area of 0.36 and is filled to a height of 4.0 . Your siphon tube rises 45 above the bottom of the sink and then descends 85 to a pail as shown in the figure. The siphon tube has a diameter of 2.4 A)Assuming that the...
May 21, 2009 by kelsi

Physics check my answer!
In order to reduce potential danger to the environment, a biohazard laboratory maintains an internal air pressure that is 1% lower than atmospheric pressure. The net force acting on a 1.8-m2 external window of this laboratory due to air pressure is most nearly 1.8 N 18 N 1.8...
June 15, 2012 by Kayla

college
how would you go about doing this type of problem thank you You are trying to raise a bicycle wheel of mass x and radius r up over a curb of height h . To do this, you apply a horizontal force . 1. What is the least magnitude of the force that will succeed in raising the wheel...
May 18, 2009 by amy

Physics
1. The efficiency of a squeaky pulley system is 73 percent. The pulleys are used to raise a mass to a certain height. What force is exerted on the machine if a rope is pulled 18.0 m in order to raise a 58 kg mass a height of 3.0 m? So to find the force exerted do I just do 58*...
January 13, 2007 by Anonymous

Physics
A ball with mass m = 0.210 kg and kinetic energy K1 = 2.97 J collides elastically with a second ball of the same mass that is initially at rest. After the collision, the first ball moves away at an angle of = 30.6 with respect to the hori- zontal, as shown in the figure. What...
October 19, 2014 by Trouble

Physics
A ball with mass m = 0.210 kg and kinetic energy K1 = 2.97 J collides elastically with a second ball of the same mass that is initially at rest. After the collision, the first ball moves away at an angle of = 30.6 with respect to the hori- zontal, as shown in the figure. What...
October 19, 2014 by Trouble

Physics
A ball with mass m = 0.210 kg and kinetic energy K1 = 2.97 J collides elastically with a second ball of the same mass that is initially at rest. After the collision, the first ball moves away at an angle of = 30.6 with respect to the hori- zontal, as shown in the figure. What...
October 21, 2014 by Tiki

Physics
A ball with mass m = 0.210 kg and kinetic energy K1 = 2.97 J collides elastically with a second ball of the same mass that is initially at rest. After the collision, the first ball moves away at an angle of = 30.6 with respect to the hori- zontal, as shown in the figure. What...
October 21, 2014 by :(

physics
in ascending to a higher altitude,the segment AB of an airplane wing makes an angle of 20 degree.for such a conditions to exist, the force on the wing should be 12,000 newton perpendicular to AB. what is the lift force and drag force?
January 12, 2011 by gigi

physics
A weight of 50.0 N is suspended from a spring that has a force constant of 190 N/m. The system is undamped and is subjected to a harmonic driving force of frequency 10.0 Hz, resulting in a forced-motion amplitude of 4.00 cm. Determine the maximum value of the driving force. N
January 30, 2011 by sir

Physics
A box is being with a velocity v by a force P (parallel to to v) along a level horizontal floor. the normal force is Fn, the kinetic frictional force if fk, and the weight of the box is mg. Decide which forces do positive, zero or negative work and why?
February 12, 2012 by Nilan

Physics
A box is being moved with a velocity (v) by a force (p)(parallel to v) along a level horizontal floor. The normal force is (Fn), the kinetic frictional force is (fk), and the weight of the is box is (mg). Draw a free-body diagram of this situation
February 13, 2012 by Amy

Physics
I was given this problem, and are having problems. I am taking AP Physics and I want to be able to understand the concept. Thank you for your help. A block of mass m = 3.65 kg is attached to a spring (k = 27.5 N/m) by a rope that hangs over a pulley of mass M = 7.30 kg and ...
October 31, 2014 by Rodrigo

Physics
A commuter airplane starts from an airport and takes the route shown in the figure below. The plane first flies to city A, located 175 km away in a direction 30.0 north of east. Next, it flies for 150 km 20.0 west of north, to city B. Finally, the plane flies 190 km due west...
February 14, 2012 by anonymous

math
he volume of a shape is the number of cubes it will take ,all the same size , to make the figure. each figure is made of stacks of cubes that are 1 centimeter on each side .
October 20, 2009 by john

6th grade math
the base of the great pyramid is a square with an area of 571536 ft squared. If one of the sides of a similar figure is 5 cm what is the area of the figure? How can I solve this?
February 15, 2011 by Colleen

Geometry
The figure is formed from tectangles. Find the total area 8Ft 5ft 3ft 3ft I just can't figure this out. or I am having a blond moment
November 28, 2011 by Cindy

calculus
the graph of y= -1/4/x-2 (1/4 over x-2) can be obtained from the graph of y=|x| by which transformations a. what is the horizontal shift? a. five units to right b. 2 units to right c. 5 units to left d. 2 units to left b. by what factor is the graphstretched or shrunk ...
December 22, 2012 by Crystal

Math
What is the formula to figure the radius of the following: 50 feet of wire how do you figure the circumference and the radius
May 8, 2008 by Debby

algebra
how would i figure out a problem like: a^2 + b^2 = 5^2 is there a certain method to figure this out?
November 17, 2009 by ali

Math
i cannot remember how to figure this out. I need to know how to figure out what is between 3/4 and 17/20 on this number line ..... 1/2 11/20 3/5 13/20 7/10 3/4 ... 17/20 9/10 1 thank you
May 19, 2011 by Renee

Inertia
A thin, uniform rod is bent into a square of side length a. If the total mass is M , find the moment of inertia about an axis through the center and perpendicular to the plane of the square. Use the parallel-axis theorem. Express your answer in terms of the variables M and a. ...
November 3, 2008 by Mary

physics
One end of a cord is fixed and a small 0.610 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.00 m as shown in the figure below. When θ = 18.0, the speed of the object is 4.50 m/s. At this instant, find each of the ...
February 21, 2010 by blasting

Physics
Sphere A, with a charge of +64 C, is positioned at the origin. A second sphere, B, with a charge of -16 C, is placed at +1.00 on the x-axis. Where must a third sphere, C, of charge +12 C, be placed so that there is no net force on it?
May 9, 2013 by Hazel

Ms. Sue please
Could you please clarify what your intentions were behind what you said on Friday the 24th in a thread that was marked as "society"? The time stamp was 2:22. I have already left my own personal interpretation there.
October 26, 2008 by Brandon

Math
PLEASE SHOW YOUR WORK.. Marty paid $72 for a jacket that had been marked down 20%. Create a linear model to represent this and use it to calculate the original price of the jacket.
January 21, 2015 by Alyssa

Physics
A charge of -3.66C is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.0978 m). The charges on the circle are -4.04C at the position due north and +6.20C at the position due east. What is (a) the magnitude and (b) ...
March 18, 2013 by Ashley

math
Greg teaches martial arts. He charges a one time processing fee of $5.00 and the cost of classes are shown below. let x represent the number of classes and y represent the cost of the classes. Based on the information, what will it cost to take 10 classes? (x) classes 1 2 3 4...
March 1, 2014 by B8

Physics
Q #2: (only other one I'm stuck on...) A 10-kg ladder 2.5m long rests agaist a frictionless wall with its base on the floor 80cm from the wall. How much force does the top of the ladder exert on the wall? I've found answers to similar questions on this site, but not close ...
April 23, 2011 by Stephanie

physics
A toy train track is mounted on a large wheel that is free to turn with negligible friction about a vertical axis (see the figure). A toy train of mass m = 2.5 kg is placed on the track and, with the system initially at rest, the electrical power is turned on. The train ...
November 9, 2009 by Emily

English
1. I especially liked the acting of the main actor and special effects. 2. I especially liked the music and the beautiful scenery in the movie. 3. I especially liked the acting of the main actor and the main actress. 4. I especially liked the roles of the actors in the sinking...
April 5, 2012 by rfvv

Earth Science
A sphere was dropped into water in a graduation cylinder as shown in the following diagram. The water level rose to the new level shown. {before: 40mL, after: 65mL} What is the volume of the sphere? (1)15mL (2)25mL (3)40mL (4)65mL (2)?
June 18, 2008 by Anonymous

physics-momentum
A 0.145-kg baseball pitched horizontally at 39 m/s strikes a bat and is popped straight up to a height of 31 m. If the contact time between the bat and the ball is 2.35 ms, calculate the average force [exerted by the bat on the ball] during contact. [Let the positive axis lie ...
February 21, 2010 by Anonymous

physics
A block of mass m is pushed along a horizontal table by a force f=70 N at an angle 55 degrees with the horizontal. Yhe coefficient of kinetic friction is 0.3 Find the normal force. My work: I know that there is 3 forces present: force of gravity, normal and applied. I think ...
October 20, 2014 by Mike

Physics
A 60.9 kg climber is using a rope to cross between two peaks of a mountain as shown in the figure below. He pauses to rest near the right peak. Assume that the right side rope and the left side rope make angles of 26.7 and 14.33 with respect to the horizontal respectively. ...
October 15, 2013 by Sinisa

AP Physics
A flagpole is to be installed on the front of an office building as shown below. The pole itself weighs 150 N and is 2 meters long. The support wire is attached at a 60 angle at a point 0.5 meters from the building. A. Find the value of the tension in the support cable. B. ...
November 30, 2012 by Shadman

physics
A wagon is pulled by a handle making an upward angle of 25 with a force of 25 N. What is the horizontal force pulling the wagon foward? What is the force lifting the wagon off the road?
October 31, 2012 by Alyssa

physics
A wagon is pulled by a handle making an upward angle of 25 with a force of 25 N. What is the horizontal force pulling the wagon foward? What is the force lifting the wagon off the road?
November 3, 2012 by Alyssa

Physics
A car drives at 15 m/s and has an air resistance force of 277 N. What is the air resistance force at 30 m/s? A truck drives at 9.7 m/s and has an air resistance force of 380 N. What is the air resistance force at 32 m/s? A 85.0 kg skydiver is falling at a constant speed of 32....
October 4, 2014 by Becky

physics
Two construction workers each of mass m raise themselves on a hanging platform using pulleys as shown above. If the platform has a mass of 0.5m, the initial distance between the pulleys and the platform is d, and the workers each pull with a force f on the ropes, what is the ...
June 22, 2013 by XYZ

CALCULUS
The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s = 3sin(t) + 5cos(t), where t is measured in seconds. (Round all answers to the nearest hundredth.) (a) Find the average velocity during the time ...
August 29, 2010 by Terry

Physics
A 279 N force is pulling an 75.9-kg refrigerator across a horizontal surface. The force acts at an angle of 26.3 above the surface. The coefficient of kinetic friction is 0.259, and the refrigerator moves a distance of 9.14 m. Find (a) the work done by the pulling force, and...
February 27, 2012 by Candy

Math
The table gives, for a particular object, the acceleration A caused by an applied force F. Acceleration (A)10 15 20 25 30 Force(F) 50 75 100 125 150 What force is required to produce an acceleration of 19? A) 19 B) 95 C) 114 D) 38
August 5, 2010 by Sharee

college physics
a 7500 kilogram rocket blasts off vertically upward from the launch pad with a constant acceleration of 2.25 m/s squared and feels no appreciable air resistance, when it reaches the height of 525 meter its engine suddenly fail so that the only force acting on it is now gravity...
July 19, 2010 by kat

Physics
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration of a person situated...
March 3, 2008 by Zach

physics
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the speed and centripetal acceleration of a person ...
July 1, 2013 by brandan

Chemistry
Draw the pH-titration curve for the following, label x and y axes accordingly. 10 mL of 0.1M H3PO4 with 0.1 M NaOH (Logk values = 2, 7, 12) I understand that the x-axis is mL of H3PO4 added and y-axis is the pH. But the logK values, is that the equiv-points for the tri-protic ...
January 14, 2015 by Joshua

physics
The system shown in the figure below consists of a mass M = 3.5-kg block resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging m = 2.2-kg block. The pulley is a uniform...
January 22, 2015 by Johnathan

Physics!
Two ropes pull on a ring. One exerts a 57 N force at 30.0, the other a 57 N force at 60.0 (a) What is the net force on the ring? Magnitude __?__N Direction __?__ (b) What are the magnitude and direction of the force that would cause the ring to be in equilibrium? __?__N __?__
October 25, 2012 by Anna

physics
Two ropes pull on a ring. One exerts a 63 N force at 30.0, the other a 63 N force at 60.0 (a) What is the net force on the ring? Magnitude ____ N Direction ____ (b) What are the magnitude and direction of the force that would cause the ring to be in equilibrium?
February 11, 2014 by Khadija

Physics
A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m. While she is in contact...
April 8, 2014 by Jason

Trig
A force of 323 newtons makes an angle of 54 degrees and 20 minutes with a second force. The resultant of the two forces makes an angle of 39 degrees forty minutes with the first force. Find the magnitude of the second force. I have the answer, 814.3022, but I need to know how ...
October 19, 2010 by Brittany

algebra
above the x axis a dot on the -2 line up to 2.5, and another dot on -3 line up to 4.5, thats on left side, then right side a dot on 2 line up 2.5, and another on line 3 up to 4.5. Not sure how to figure this is someone is willing to help. possible answers; domain: {3, 2, 0, ...
September 18, 2012 by lee

Physics - momentum
Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 22 m/s, and puck 2 has an initial speed of 14 m/s. They collide and stick together. Find the components along x and y of the initial velocities of both particles. v1xi = 19.1 m/s ...
November 16, 2010 by J Velji

Physics 5
Two blocks are free to slide along the frictionless wooden track ABC shown in Figure P9.20. A block of mass m1 = 5.00 kg is released from A. Protruding from its front end is the north pole of a strong magnet, repelling the north pole of an identical magnet embedded in the back...
October 20, 2011 by Anonymous

Science!
2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <---- 3. Which of the following describes the relationship between friction and inertia? When there is more friction, there is less inertia When there is less ...
March 19, 2014 by Gabby

Physics
Your 2.85kg physics book rests on a horizontal tabletop. A. Find the normal force on the book. B. Suppose you pull up on the book with a 15.0N force, now what's the normal force? C. Suppose you push down on the book 15.0N Force now what's the normal force?
September 20, 2012 by Jessica

science
Okay do I have been trying countless to figure the answer to this question. If someone would help it would be greatly appreciated! The question is: "Calculate the force of gravity between a newborn baby of mass 4 kg and the obstetrician of mass 80 kg, who is 0.1 m from the baby."
February 18, 2014 by JMAC

English
I checked the sentences myself.There were spelling mistakes to correct. I need to prepare this listening activity taken from a course book (again). I just want to be sure that everything is OK. 1) Travel and expeditions were much in the peoples mind. Perhaps the most typical ...
November 9, 2011 by Henry2

physics
Vector A has a magnitude of 8.00 units and makes an angle of 45.0 with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods, find (a) the vector sum A + B and (b) the vector difference A B. Could...
August 28, 2009 by benjamin

math
jason leaves detroit at 2 pm at a constant speed. he passes ann arbor, 40 mi. from detroit, at 2:50 pm. express the distance traveled in terms of time elapsed. i know d=rt. t=50 min. d=40 mi. does that mean the r= 4/5 mi/min. ? but how would u get the answer from there? I ...
September 28, 2006 by hawkstar

Calc
A line tangent to y=(x^2)+1 at x=a, a>0, intersects the x-axis at point P. a) Write an expression for the area of the triangle formed by the tangent line, the x-axis, and the line x=a. b) For what value of 'a' is the area of the triangle a minimum? Justify your answer. Show...
February 20, 2008 by Michael

gen. physics II
A charge of +3 C is at the origin. When charge Q is placed at 2 m along the positive x‑axis, the electric field at 2 m along the negative ‑axis becomes zero. What is the value of Q? a. ‑3 C b. ‑6 C c. ‑9 C d. ‑12 C please justify your ...
July 25, 2010 by Alinkashia

calculus
The hypotenuse of a right triangle has one end at the origin and one end on the curve y = (x^4)(e^-7x), with x > 0. One of the other two sides is on the x-axis, the other side is parallel to the y-axis. Find the maximum area of such a triangle.
November 1, 2011 by Emily

calculus
The hypotenuse of a right triangle has one end at the origin and one end on the curve y = (x^4)(e^-7x), with x > 0. One of the other two sides is on the x-axis, the other side is parallel to the y-axis. Find the maximum area of such a triangle.
November 1, 2011 by Emily

lens surface
- a spherical generator is used to produce a -15.00D surface on glass of refractive index 1.80. The diameter of the cutting tool is 80mm and the radius of the cutting surface is 4 mm. What is the angle between the axis of the tool and the axis of the lens?
October 22, 2012 by Anonymous

Physics
Johns mass is 81.0 kg, and Barbaras is 62.4 kg. He is standing on the x axis at xJ = +9.41 m, while she is standing on the x axis at xB = +4.34 m. They switch positions. How far and in which direction does their center of mass move as a result of the switch? Distance moved ...
November 7, 2012 by Orla

Math
the figures are similar. the are of one figure is given. find the area of the other figure to the nearesr whole number. the area of the larger triangle is 1,589 ft squared
November 20, 2011 by Anonymous

Math!!!
I have a input output table and I can't figure out the rule here is the chart X. Y _______________ 1. | 3 4. | 7 7. | 11 Can u figure it out I'm having a really hard time with this problem!!!!
January 30, 2013 by John

11 Maths B
Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on its side, that is, with the axis of the design running along the x-axis
July 28, 2012 by Nina

Calculus
A rectangle has one corner in quadrant I on the graph of y = 9 − x^2,another corner at the origin, and corners on both the positive y-axis and the positive x-axis. As the corner on y = 9 − x2 changes, a variety of rectangles are obtained. Express the area A of the ...
September 7, 2014 by Delaney

Math
Given that force 1=60 pounds and force 2=90 pounds, find the angle between the forces if the magnitude of the resultant force is 50 pounds. Round answer to the nearest degree and show work.
April 27, 2011 by Shelby

physics
A force of 15N acts in the forward direction on a carton of 3kg. Suppose a friction force of 6N opposes the carton motion. Find the following: 1) the net force 2) the acceleration of the carton
March 16, 2014 by Rasha

algebra
Direct and Joint Variation 2. The volume V of a rectangular prism of a particular height varies jointly as the length l and the width w, and V = 224 ft when l = 8 ft and w = 4 ft. Find l when V = 210 ft and w = 5 ft.
January 26, 2009 by bob

math
Direct and Joint Variation 2. The volume V of a rectangular prism of a particular height varies jointly as the length l and the width w, and V = 224 ft when l = 8 ft and w = 4 ft. Find l when V = 210 ft and w = 5 ft.
January 26, 2009 by bob

Biology!!
The lifespan of plants varies depending on genetics and survival strategies. Discuss the adaptive value of annual, biennial, and perennial life spans.
January 26, 2011 by NEEDS HELP!!

algebra
Express the statement as a formula that involves the variables w, z, u and a constant of proportionality k, and then determine the value of k from the condition : w varies directly as z and inversely as the square root of u, if z = 3 and u = 4, then w = 18
March 30, 2014 by DOREEN

Physics
A person pushes a 11.0 kg lawn mower at constant speed with a force of 76.0 N directed along the handle, which is at an angle of = 41.0 to the horizontal. Calculate the normal force exerted vertically upward on the mower by the ground. Calculate the force the person must ...
November 28, 2011 by Leah

Physics
Two charged smoke particles exert a force of 4.2x10^-2 N on each other. What will be the force if they are moved so they are only one eighth as far apart? F= 4.2x10^-2 N K= 8.99x10^9 e= 1.6x10^-19 Do I solve for r even though they're asking me to find the force?
May 14, 2010 by Ali

Physics
Two ropes are attached to a wagon, one horizontal to the west with a tension force of 30 N, and the other east and at an angle of 30 northward and a tension force of 40 N. Find the components of the net force on the cart. Show all your work.
December 10, 2011 by Jay

physics
A student has just started pulling hard enough for a crate to start accelerating into motion. At that particular instant, what is the net force on the crate if the force of friction has magnitude 200 N and the applied force is 225 N?
October 8, 2012 by Rebecca

physics
A pushes with force of 300 N at 25 degrees. B pushes with force of 275 N at 160 degrees. C pushes with force of 325 N at 300 degrees. Find resultant force. I got 187 N at -19 degrees or 161 degrees. Correct? or could you explain more please? Thank you.
November 7, 2010 by Anonymous

physics
a horizontal force of 3 N is excerted on an object while a vertical force of 4 N is excerted at the same time. calculate the resultant force on the object? 3 square + 4 square = 25 so the resultant force will be 25 N
December 21, 2014 by ruby

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