Friday

October 21, 2016
Number of results: 39,199

**Physics**

A diving board length 5.60m that weighs 250N is supported by two pillars. One pillar is at the left end of the diving board, as shown below; the other is distance 1.55m away . Find the magnitude of the force exerted by the left pillar when a 90.0kg diver stands at the far end ...

*December 1, 2010 by ree*

**5th grade**

How do you figure out area of compound figure

*March 3, 2010 by Sydney*

**algabra 1**

The following figure has a length of 5 and a width of 9. What is the area of the figure?

*October 25, 2010 by devonte*

**Math**

What is another way to figure out the area of a complex figure?

*February 8, 2013 by Ryan *

**Geometry**

What is another way to figure out the area of a complex figure?

*February 9, 2013 by Ryan*

**Science--Physics--check answers**

1. A football player pushes a dummy forwards at a constant 0.85m/s for 11m using 7150 J of energy. The dummy has a mass of 120 kg. Find the force the football player exerts, find the frictional force the dummy exerts. - for my answer I got 1176N as the force the football ...

*February 3, 2014 by Diane*

**Physics**

A beaker of mass 5kg containing oil of mass 17.4 kg and density 8.5 x102kg/m3 rests on the scale A block of iron of mass 6.7kg is suspended from the spring scale and completely submerged in the oil as shown in Figure below. Determine the equilibrium readings of lower scale in ...

*November 3, 2014 by G*

**physics**

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 12.6 m/s. The cliff is 49.1 m above a flat horizontal beach as shown in the figure. a.How long after being released does the stone strike the beach below the cliff? b.With ...

*January 24, 2016 by Help plz*

**Physics**

An electron of mass me and charge q=-e is injected horizontally midway between two very large oppositely charged plates. The upper plate has a uniform positive charge per unit area +σ and the lower plate has a uniform negative charge per unit area -σ . You may ignore...

*March 5, 2013 by P*

**Physics**

Two identical teflon rods are 10 centimeters long and rubbed with fur so that they each have a total negative charge of 20 microCoulombs that is uniformly distributed along their length. They are arranged along the same axis, with their ends 5 centimeters apart. What is the ...

*January 23, 2014 by Leroy*

**PHYSICS**

Two identical teflon rods are 10 centimeters long and rubbed with fur so that they each have a total negative charge of 20 microCoulombs that is uniformly distributed along their length. They are arranged along the same axis, with their ends 5 centimeters apart. What is the ...

*January 27, 2014 by Ramana*

**PHYSICS**

Two identical teflon rods are 10 centimeters long and rubbed with fur so that they each have a total negative charge of 20 microCoulombs that is uniformly distributed along their length. They are arranged along the same axis, with their ends 5 centimeters apart. What is the ...

*January 27, 2014 by Ramana*

**physics**

A wheel rotates without friction about a stationary horizontal axis at the center of the wheel. A constant tangential force equal to 83.N is applied to the rim of the wheel. The wheel has radius 0.110m . Starting from rest, the wheel has an angular speed of 14.6rev/s after 3....

*May 3, 2013 by amy*

**Physics**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...

*October 14, 2013 by Anonymous*

**PHYSICS (HELP)**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...

*October 14, 2013 by Anonymous*

**physics**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...

*October 14, 2013 by Anonymous*

**physics**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...

*October 15, 2013 by ss01*

**Math**

Which function is increasing? a. y = -2^x b. y = 2 (1/2^x) c. y = 3 (4^-x) d. y = -4 (2^x) What is the y-intercept of the function y = 4(2^x) - 2? a. 2 b. -2 c. 4 d. 1 In the function y = 4(3^x) - 1, the graph is asymptotic to ..... a. y = 1 b. y - axis c. y = -1 d. x - axis

*January 21, 2015 by Millie*

**Physics**

A 15 N wooden block is dragged for 15 meters across a wooden floor in 15 seconds... I'm given that the mew (the greek leter uk) or however u say it is .2 I have to make a free body diagram I sloved and got Fn = 15 N mg = -15 N Ff = -3 N How do I solve for the force applied to ...

*March 18, 2009 by Physics*

**physis**

Three spiders are resting on the vertices of a triangular web. The sides of the triangular web have a length of a = 0.85 m, as depicted in the figure. Two of the spiders (S1 and S3) have +7.7 µC charge, while the other (S2) has −7.7 µC charge. a)What are the magnitude ...

*January 12, 2014 by Jimmy*

**physis**

Three spiders are resting on the vertices of a triangular web. The sides of the triangular web have a length of a = 0.85 m, as depicted in the figure. Two of the spiders (S1 and S3) have +7.7 µC charge, while the other (S2) has −7.7 µC charge. a)What are the magnitude ...

*January 12, 2014 by Jimmy*

**Physics**

The Angular momentum of an object that spins is determined by a. the rotational speed b. the mass of the object c. the choice of the axis of rotation d. all of the above I say d based on the fact that momentum =r*p where p is mv and r takes into account the axis

*April 28, 2009 by David*

**physics**

Two point charges are placed along a horizontal axis with the following values and positions: +3 µC at x = 0 cm and - 12 µC at x = 35 cm. At what point (the coordinate) along the x axis is the electric field zero? Expess the answer (in cm) with one decimal place.

*September 11, 2012 by AJ*

**mitx 2.01x**

We will obtain bending moment diagrams for three beams and calculate stresses inside the beams. For each beam, take the -axis along the neutral axis of the beam, oriented from left to right, with origin at .

*June 27, 2013 by Anonymous*

**coordinate geometry**

find the equation of circle having centre in 1st quadrant, touching x-axis,having a common tangent y=3^1/2x+4 with the circle x^2+y^2+4x+4y+4=0 such that the distance between two circles along the x-axis is 3 units ?

*October 20, 2016 by rakesh*

**math**

a point has coordinates (0,3) where is it located in the coordinates plane? A)x-axis B)y-axis C)quadrant3 D)quadrant4 i think it is quadrant3

*January 30, 2010 by makeeda*

**physicalscience**

1. which one of the 4 keeps electrons in orbit around the nucleus? electromagnetic force weak force strong force gravity 2. which is the greatest of the 4 fources

*November 3, 2007 by liz*

**physics**

Discuss the relationship between motion and force including the following terms: velocity, acceleration, equilibrium, contact force, and field force.

*May 9, 2013 by Adam*

**science**

Discuss the relationship between motion and force including the following terms: velocity, acceleration, equilibrium, contact force, and field force.

*May 9, 2013 by Adam*

**science**

A linear circuit is shown below in Figure 1. Figure 1 The elements in this circuit have the following values: R1=100Ω, R2=200Ω, R3=350Ω, V=5V, and I=0.004A. Determine the potentials drops vA and vB across resistors R1 and R2 respectively. What is the value of ...

*May 2, 2013 by Anonymous*

**science**

An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 850 m, horizontal distance 20.0 km, and 24.5° south of west. The second aircraft is at altitude 1100 m, horizontal distance 18.0 km, and 16.0° south of west. What is the distance ...

*September 3, 2012 by mohannad*

**Physics**

An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, horizontal distance 19.8 km, and 22.5° south of west. The second aircraft is at altitude 1000 m, horizontal distance 18.0 km, and 18.0° south of west. What is the distance ...

*September 12, 2012 by Heather*

**PHYSICS help!!!!!!**

An air-traffic controller notices two aircraft on his radar screen. The first is at altitude 850 m, horizontal distance 19.6 km, and 27.0° south of west. The second aircraft is at altitude 1100 m, horizontal distance 17.4 km, and 18.0° south of west. What is the distance ...

*September 13, 2012 by neeba*

**physics**

An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 950 m, horizontal distance 19.9 km, and 23.5° south of west. The second aircraft is at altitude 1200 m, horizontal distance 17.4 km, and 22.0° south of west. What is the distance ...

*February 20, 2013 by Anonymous*

**Physics**

1)How much work is done by a person lifting a 2 kg object from the bottom of a well at a constant speed of 2m/s for 5 s. Is the answer mgh=2*9.8*10m 2)A 2kg block slides on a rough horizontal surface. A force (magnitude = 4N) acting parallel to the surface is applied to the ...

*April 5, 2011 by Fiona*

**physics**

Only two forces act on an object (mass = 4.00 kg), as in the drawing. Find the magnitude and direction (relative to the x axis) of the acceleration of the object. Ftotal=Sqrt(60^2+40^2)=72.11(N) Angle=tan-1(60/40)= 56.3° (How did you get 56.3°) a= F/m=72.11/4=18(m/s/s) The ...

*October 25, 2012 by Anonymous*

**11th grade physics**

Rachel pulls her 177N suitcase at a constant speed by pulling on a handle that makes an angle (-) with the horizontal. Using frictional force on the suitcase as 27N and Rachels force on 43N on the handle to calculate the net force. 1. What angle does the handle make with the ...

*November 2, 2010 by Zack*

**MIT 2.01X**

We will obtain bending moment diagrams for three beams and calculate stresses inside the beams. For each beam, take the x-axis along the neutral axis of the beam, oriented from left to right, with origin at A. HW7_1A_1 : 5.0 POINTS For the beam above, obtain symbolic ...

*June 25, 2013 by Uncle SAM*

**Physics pls anyone can help me? its urgent**

A charged rod of length 21cm and total charge -7.5muC is bent into a three-quarter circle symetric about the x-axis as shown below What is the magnitude of the Electric Field at the center of the three-quarter circle in N/C ?:Which directions listed below make up the ...

*October 20, 2013 by nisha*

**physics**

the system is in static equilibrium. The coefficient of static friction between the block and the table's surface is = 1/3. The mass of the block that is hanging down is n1 Kg. The tangent of the angle shown in the figure is tan theta = n2. What is the minimum value of mass, ...

*January 14, 2012 by frank*

**Physics 1 College Level**

If D = 3204 meters and d = 1247 meters in the figure, what is the magnitude of the force on the space ship to the nearest MN? Consider all three to be point masses. I'm not even sure to begin with this question. Any help will be much appreciated!

*June 1, 2013 by Devin*

**Physics**

Calculate the average force per nail when Sarah (following figure), who weighs 130 pounds, lies on a bed of nails and is supported by 600 nails. Express your answer using two significant figures.

*March 27, 2014 by James *

**physics**

A 34-pound crate is pushed across the floor by a 30-pound horizontal force F1. Aside from the pushing force and gravity F2, there is also a 34-pound force F3 exerted upward on the crate and a 20-pound frictional force F4 What kinds of work do the force F1, F2, F3, F4 do, ...

*November 16, 2011 by Mochool*

**Physics Help**

A force sensor is used to measure a force applied to a 9.1 kg box on a hard, horizontal surface. It records that the box starts to move when the force is equal to 26.9 N. This force makes the box start to move with an acceleration of 0.2 m/s2. Find mu sub s/k respectively.

*June 18, 2012 by Brittney*

**physics**

if a negative charge particle is placed on the left side and a higher positive charge particle is placed on the right side, why is the location that makes electric field zero is on the left of negative charge rather than in between or on the right of positive charge

*August 3, 2010 by blast*

**physics **

A 0.700-kg ball is on the end of a rope that is 2.20 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical as shown. What is the ...

*May 23, 2012 by Adam*

**math**

A particle A is projected vertically upwards from a point O on horizontal ground with speed 20ms. At the same instant a particle B is released from rest at point P which is 30 m above the ground. The point P Is not directly above O ignore air resistance. Find thr time that ...

*January 22, 2014 by Abdel*

**physics**

Two forces act on an object. The magnitude of the net force acting on the object a. equals the sum of the magnitude of the two forces b. equals the difference in the magnitudes of the two forces c. equals the average of the two forces d. cannot be determined from the given ...

*February 6, 2013 by Carolyn*

**physics**

A particle that hangs from a spring oscillates with an angular frequency ω. The spring-particle system is suspended from the ceiling of an elevator car and hangs motionless (relative to the elevator car) as the car descends at a constant speed v. The car then stops ...

*October 6, 2010 by flame*

**physics**

A particle that hangs from a spring oscillates with an angular frequency ω. The spring-particle system is suspended from the ceiling of an elevator car and hangs motionless (relative to the elevator car) as the car descends at a constant speed v. The car then stops ...

*October 7, 2010 by flame*

**physics**

A particle that hangs from a spring oscillates with an angular frequency ω. The spring-particle system is suspended from the ceiling of an elevator car and hangs motionless (relative to the elevator car) as the car descends at a constant speed v. The car then stops ...

*October 8, 2010 by flame*

**engineering**

A slotted bar is attached to the origin and rotates in the horizontal plane with a constant angular velocity of 0.665 radians/s . The bar moves a roller weighing 33.6 lb along the cam's perimeter. A spring holds the roller in place; the spring's spring constant is 1.34 . The ...

*October 11, 2011 by HELP PLEASE! DOn't know How to do it!!! :(*

**physic**

A 0.34 kg particle has a speed of 2.0 m/s at point A and kinetic energy of 7.5 J at point B. (a) What is its kinetic energy at A? _____ J (b) What is its speed at point B? _____ m/s (c) What is the total work done on the particle as it moves from A to B? _____ J thank you so much

*October 20, 2009 by Chan*

**Physics**

The pulley system shown in the figure is used to lift a 52-{\rm kg} crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. The crate is rising with an acceleration of 2.5 m/s^2. Determine the tension in ...

*March 10, 2012 by JO*

**Physics**

The drawing shows a person (weight W = 592 N, L1 = 0.841 m, L2 = 0.410 m) doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position. force on each hand N force on each foot N I post this eailer and O'm ...

*April 4, 2008 by Robinson*

**Algebra**

In triangle PQR shown, point S (not shown)is on QR between Q and R. Give one possible value for the length of PS ...Explain your reasoning.. Triangle PQR = 13" PQ = 6" QR = 2" PR = 5" I need help in figuring this out this triangle with an equation or expression...thank you

*May 13, 2009 by JAY10*

**Physic**

A wheel-and-axle system shown consists of two coaxial wheels of radius r = 2 meters and R = 6 meters. The forces applied to the system as shown in the diagram are: F1 = 80 N F2 = 80 N F3 = 40 N F4 = 30 N If counterclockwise is positive, what is the net torque on this system?

*November 25, 2012 by Anonymous*

**Physic**

A wheel-and-axle system shown consists of two coaxial wheels of radius r = 2 meters and R = 6 meters. The forces applied to the system as shown in the diagram are: F1 = 80 N F2 = 80 N F3 = 40 N F4 = 30 N If counterclockwise is positive, what is the net torque on this system?

*November 25, 2012 by Anonymous*

**physics**

A small sphere of mass m = 7.50 g and charge q1 = 32.0 nC is attached to the end of a string and hangs vertically as shown in the figure. A second charge of equal mass and charge q2 = –58.0 nC is located a distance d = 2.00 cm below the first charge. (a) Find the tension in ...

*November 6, 2012 by renee *

**physics**

The figure shows two points in an E-field: Point 1 is at (X1,Y1) = (3,4), and point 2 is at (X2,Y2) = (12,9), with coordinates in meters. The electric field is constant, with a magnitude of 53 V/m, and is directed parallel to the +x axis. The potential at point 1 is 1200 V. ...

*February 25, 2008 by Samantha*

**Math**

A wooden duck with a regular selling price of $125.99 is marked down to $79.99. The percent of markdown is: Answer: 36.51% What is the formula? How to solve this?

*January 19, 2012 by Liz*

**Due in an hour help please**

Simplify: x^3+x^3 My answer was : 2x^6 is this incorrect because my test the teacher had marked it wrong as if he was saying that it. Was going to be. 2x^3 instead

*February 28, 2012 by Amanda mosley*

**math usha kk**

a refrigerator is marked at rupees 14500 if 16%vat is charged find the total amount that she will have to pay to the shopkeeper

*October 14, 2014 by cbse 8th*

**help fast just explain how i get answer but plz **

a flower arrangement was marked down 12% If the flowers originally cost $20, what is the amount of the discount?

*February 3, 2016 by shynice*

**physics Only one part left !!!!!! PLZ HELP**

A uniform, square metal plate with side L = 3.50 cm and mass 0.087 kg is located with its lower left corner at (x, y) = (0, 0) as shown in the figure. Two squares with side length L/4 are removed from the plate. (a) What is the x-coordinate of the center of mass? = L/2 (b) ...

*March 7, 2011 by HELP!!!!*

**physics Only one part left !!!!!! PLZ HELP**

A uniform, square metal plate with side L = 3.50 cm and mass 0.087 kg is located with its lower left corner at (x, y) = (0, 0) as shown in the figure. Two squares with side length L/4 are removed from the plate. (a) What is the x-coordinate of the center of mass? = L/2 (b) ...

*March 7, 2011 by HELP!!!!*

**writting a program**

Speed of Sound. Sound travels through air as a result of collisions between the molecules in the air. The temperature of the air affects the speed of the molecules, which in turn affects the speed of sound. The velocity of sound in dry air can be approximated by the formula...

*February 23, 2012 by sarah*

**Physics**

1. A science teacher wanting to demonstrate centripetal acceleration holds a bucketful of water by its handle and spins it in a vertical circle. If the teacher’s arm is 1.15m long, at what speed must the bucket be rotated so that at the top of its path there is no tension ...

*December 10, 2015 by Anonymous*

**physics charges. please help!**

A charge Q = +4.5 uC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 uC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...

*November 12, 2012 by Matt*

**Math**

Figure undergoes a sequence of transformation that include dilutions. The figure and its final image are congruent explain how.

*April 12, 2016 by Khan*

**Physics**

The position of a toy locomotive mobing on a straight track along the x-axis is given the equation x=t^3-6t^2 +9t where x is in metters and t is in seconds. The net force on the locomotive is equal to zero when t is eqaul to a) zero b)2 s c)3 s d)4s e)5s Would the answer be b)...

*March 25, 2007 by Tammy*

**classical physics**

Question 14 Give reasons for the answers to each of the following questions: a) Can a normal force be horizontal? b) Can a normal force be directed vertically downward? c) Consider a tennis ball in contact with a stationary floor and with nothing else. Can the normal force be ...

*March 22, 2013 by Pritesh*

**Physics**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...

*October 10, 2013 by asha*

**Physics**

A 10kg mass is located at the (1.00m)i + (2.00m)j + (2.00m)k. A 5kg mass is located at (-1.00m)i + (1.00m)j + (1.00m)k. (A) Determine the moment of inertia of this system about an axis through the origin parallel to the x-axis. (B) Determine the moment of inertia of this ...

*November 29, 2014 by Matt*

**physics**

A 50-kg box is being pushed a distance of 6.4 m across the floor by a force P with arrow whose magnitude is 154 N. The force P with arrow is parallel to the displacement of the box. The coefficient of kinetic friction is 0.24. Determine the work done on the box by each of the ...

*June 21, 2015 by Lola*

**physics**

a wheel revolves about a fixed horizontal axis through O. During a certain interval of time, the angular velocity (which initially is 20 rad per second clockwise) changes uniformly at such a rate that the angular displacement is 60 rad counterclockwise, and the total angle ...

*January 31, 2011 by stan*

**Physics**

A painter of weight 1000N stands 1.0m from the left-hand end of a uniform plank which is 5.0m long and weighs 800N. The plank is supported by two trestles each 0.5m from the opposite ends. Thre are two upward forces P and Q acting on the plank due to the trestles. By taking ...

*October 6, 2015 by Muhammad Asad*

**science**

1.act against the direction of motion and gets larger as an object moves faster 2. an object acted upon by a net force will accelerate in the direction of that force. 3.the speed an object reaches when the force of gravity is balanced by the force of air resistance

*September 21, 2008 by karen*

**science**

1.act against the direction of motion and gets larger as an object moves faster 2. an object acted upon by a net force will accelerate in the direction of that force. 3.the speed an object reaches when the force of gravity is balanced by the force of air resistance

*September 21, 2008 by karen*

**physical science**

during a football game two players try to tackle another player.one player applies a force of 50.0 n to the east. a second player applies a force of 120.0 n to the north . what is the total applied force?and what is themagnitude and direction of the force

*October 11, 2011 by sarah arcand*

**Physics! Help **

Calculate the net or resultant force in N in x direction given that F1=96.2 N is applied at angle of α=55.4° and a second F2=11.6 N is applied at angle of β=41.2°. See attached figure. Express your answer to 4 significant figures.

*May 29, 2014 by Siobhan*

**Physics**

Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 1.65 μC charge. (Let A = 1.65 μC, B = 6.60 μC, and C = −4.20 μC.)

*September 5, 2015 by Audrey*

**physics urgent!**

The magnetic field in the region shown below is increasing by 5 T/s. The circuit shown (with R=25 , C=55 µF, dimensions 1 m by 2 m) is inserted into the region as shown. The capacitor is initially uncharged. 1. What is the current in the circuit at the moment the circuit is ...

*November 12, 2011 by sonia*

**calculus**

Determine whether the graph of the equation is symmetric with respect to the x-axis, y-axis, line y=x, line y=-x, or none of these. x+y=6 Do I have to move the y and 6 to the other side of the equations or does it not matter? Also, if I do, when I test using the equation a^2...

*August 11, 2010 by James*

**Chemistry**

If the equilibirium reaction is 2 03(g) <--> 3 O2 9(g) is first order with respect to ozone, what type of plot( meaning what is plotted on the y axis vs what is plotted on the x-axis) will yield a straight line? what will the slope of the line represent? PLEASE help im ...

*January 23, 2011 by Amber*

**Physics**

A 2.92 kg block starts from rest at the top of a 30° incline and accelerates uniformly down the incline, moving 1.93 m in 1.60 s. (a) Find the magnitude of the acceleration of the block. __ m/s2 (b) Find the coefficient of kinetic friction between the block and the incline. ...

*March 2, 2016 by Cheyenne*

**Physics - Center of Mass**

A 32-cm-by-32-cm checkerboard has a mass of 120 g. There are four 19-g checkers located on the checkerboard, as shown in the figure. Relative to the origin located at the bottom left corner of the checkerboard, where is the center of mass of the checkerboard-checkers system?

*June 16, 2012 by Newman*

**Linear Momentum in Rotational motion**

It is known that for a mass (m) that moves with velocity (v) the linear momentum is (m)x(v). Now, assume we have a rod of mass (m) and radius (R) that rotates with constant angular velocity (w). Also, isolate only half of the cycle (rotation for 180 degrees). What is the ...

*February 11, 2007 by Nikos*

**Physics**

A force of 3.00 N acts through a distance of 12m in the direction of the force.Find the work done. Work=force*distance*CosTheta where theta is the angle between force and distance.

*September 16, 2006 by fluffy*

**Physics**

A proton travelling 1.5x10^6 m/s enters 2 vertically charged parallel plates held 0.15m apart. The top plate is held at +250V and the bottom is grounded (0V). A magnetic field can be applied to the area between the plates to counteract the electric force acting on the proton. ...

*February 2, 2015 by Sandara*

**Physics**

Calculate the work done by the applied force accelerating a 2 kg object at 3 m/s/s over 4 m if there is a 2.5 frictional force of resistance. I calculated using F=ma=6N; then net force = 6N-2.5N=3.5 N so W=fd=14J. Did I do this correctly? Thanks

*April 6, 2009 by KC*

**Physics**

A rock of mass m = 1.8 kg is tied to a string of length L = 2.4 m and is twirled in a vertical circle as shown in the figure below. The speed v of the rock is constant; that is, it is the same at the top and the bottom of the circle. If the tension in the string is zero when ...

*October 26, 2011 by Freud*

**Physics**

Two objects are connected by a massless string, as shown in the figure below. The incline and pulley are frictionless. (a) Find the acceleration of the objects. (Assume that positive acceleration is to the right for m1 and downward for m2. Answer using m1 for m1, m2 for m2, g ...

*July 8, 2015 by Anonymous*

**physics**

In the figure, forces A, B, C and D each have magnitude 50.0 N and act at the same point on the object. What torque (magnitude and direction) does A force exert on the object about point P? What torque (magnitude and direction) B does force exert on the object about point P? ...

*April 12, 2008 by Erin*

**Physics/Mechanics**

We will obtain bending moment diagrams for three beams and calculate stresses inside the beams. For each beam, take the x-axis along the neutral axis of the beam, oriented from left to right, with origin at A. HW7_1A_1 : 5.0 POINTS For the beam above, obtain symbolic ...

*June 18, 2013 by MAN*

**physics**

A new type of spring is found where the spring force F is given by F=-kx + bx^2 where k=400 N/ m and b=100 N/m^2 and x is the expansion (or compression) of the spring from its equilibrium position. The spring is attached to a point mass of 1 kg sitting on a horizontal ...

*April 4, 2011 by Physics*

**college physics**

Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide away together after ...

*February 24, 2011 by lala*

**college physics**

Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide away together after ...

*February 24, 2011 by lala*

**Physics**

Consider three force vectors ~ F1, ~ F2, and ~ F3. The vector ~ F1 has magnitude F1 = 86 N and direction θ1 = 169◦; the vector ~ F2 has magni- tude F2 = 46 N and direction θ2 = 240◦; and the vector ~ F3 has magnitude F3 = 45 N and direction θ3 = 132...

*September 6, 2009 by Nanhi*

**physics**

take a satalite going around the earth... what allows us to say net force (radial) = Fg = Fr = ma were the Fg is the force of gravity exerted on the satalite were Fr is radial force and ma is the mass and acceleration of the satalite ok I understand newtons second law but what...

*August 17, 2009 by physics*