Thursday

October 23, 2014

October 23, 2014

Number of results: 17,621

**phy**

Three blocks are suspended at rest by the system of strings and frictionless pulleys shown in the figure below, where W = 29.0 N, and è = 26.6°. What are the weights w1 and w2?
*October 25, 2012 by anthony*

**physics**

Three blocks are suspended at rest by the system of strings and frictionless pulleys shown in the figure below, where W = 29.0 . What are the weights w1 and w2?
*October 25, 2012 by anthony*

**physics**

A 101.6-N bird feeder is supported by three cables as shown in the figure below. Find the tension in each cable
*February 5, 2014 by Anonymous*

**physics **

The figure below shows a general situation in which a stream of people attempt to escape through an exit door that turns out to be locked. The people move toward the door at speed v = 4.1 m/s, are each d = 0.30 m in depth, and are separated by L = 1.75 m. The arrangement in ...
*September 3, 2011 by Savannah*

**physics**

A small block on a frictionless horizontal surface has a mass of 2.50×10−2 . It is attached to a massless cord passing through a hole in the surface. (See the figure below .) The block is originally revolving at a distance of 0.300 from the hole with an angular speed of ...
*November 17, 2009 by Anonymous*

**geometry**

the scale factor between figure A and figure B is 0.25. If one side length of figure B is 56 yards, what is the corresponding side length of figure A?
*October 3, 2010 by linda*

**Math**

In the figure below, the diagonal line divides the rectangle into halves Which statement about the figure is NOT true? On the rectangle the width is 3cm and the length is 4cm. The line that divides the rectangle is 5cm F. The perimeter of the rectangle is 14cm G. The area of ...
*January 30, 2012 by Andrew*

**physics**

Bar AB has length L, constant thickness d, and a width that tapers linearly from 3d at its fixed end (A) to d at its free end (B; see the figure below). The bar is homogeneous with mass density ρ and Young's modulus E. When hung vertically as shown in the figure, the bar ...
*June 23, 2014 by Donkey*

**Math**

Write two algebraic pattern rules for this toothpick pattern. Figure 1 = 3toothpicks Fiqure 2 = 5 toothpicks Figure 3 = 7 toothpicks Figure 4 = 9 toothpicks i need help please. I did 1-3n for Figure 1
*September 30, 2013 by Person*

**Math I REALLY NEED HELP!!!!!!!!!**

A figure is dilated by a scale factor of 4. If the origin is the center of dilation, what are the coordinated in the original figure of a vertex located at (8,8) in the enlarged figure? A/(2,2) B/(4,4)
*January 9, 2013 by Sammy*

**Physics**

Find the electric field at P in the figure shown below. (Take r = 1.5 m and θ = 41°. Measure the angle counterclockwise from the positive x-axis.)
*May 25, 2011 by SBHS*

**Chemistry**

NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l) How do I calculate the oxidation states of Nitrogen and figure out if it is reduced, oxidized or neither? My answer is below. I am not sure if I am figuring it right. Please advise. NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l) N is -3,H3 is +1...
*May 4, 2010 by Carli*

**Physics for Engineers**

A playground is on the flat roof of a city school, 5.2 m above the street below (see figure). The vertical wall of the building is h = 6.70 m high, forming a 1.5-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching...
*September 14, 2011 by Lauryn*

**math **

a 10-foot ladder is placed against the side of a building as shown i figure i below.the bottom of the ladder is 8 feet from the base of the building .in the order to increase the reach of the ladder against the building ,it is moved 4 feet closer to the base the bulding shown ...
*May 14, 2013 by kirandeep*

**Math PLEASE HELP!!!**

A figure is dilated by a scale factor of 4. If the origin is the center of dilation, what are the coordinated in the original figure of a vertex located at (8,8) in the enlarged figure? A/(2,2) B/(4,4) No one has answered
*January 9, 2013 by Sammy*

**Physics**

A ball is shot vertically upward from the surface of another planet. A plot of y versus t for the ball is shown in the figure below, where y is the height of the ball above its starting point and t = 0 at the instance the ball is shot. The figure’s vertical scale is set by ys...
*October 2, 2007 by Vanessa*

**physics**

A 24.0 kg backpack is suspended midway between two trees by a light cord as in the figure (Figure 1) . A bear grabs the backpack and pulls vertically downward with a constant force, so that each section of cord makes an angle of 27 degrees below the horizontal. Initially, ...
*July 24, 2012 by Anonymous*

**physics**

Find the magnitude and direction of the net electrostatic force exerted on the point charge q3 in the figure below, where q = +2.5 μC and d = 28 cm. The picture is of a square. q1=+q, q2=-2q, q3=-3q, q4=-4
*July 17, 2011 by Chloe*

**physics**

Find the magnitude and direction of the net electrostatic force exerted on the point charge q3 in the figure below, where q = +2.5 μC and d = 28 cm. The picture is of a square. q1=+q, q2=-2q, q3=-3q, q4=-4
*July 17, 2011 by Chloe*

**geometry**

Can you use two straight cuts to break the figure below into three pieces 5 squares numbered 12345 5 123 4
*August 30, 2013 by Tim*

**SCI 275**

CLASS - Please see the attached figure. How do the three factors shown in the figure interact to promote sustainable development? [img src="@7140725"] this is the figure.
*November 11, 2007 by dawn*

**physic**

Find the acceleration reached by each of the two objects shown in figure below if the coefficient of kinetic friction between the 7.00 kg object and the plane is 0.270.
*October 16, 2009 by Chan*

**physics**

If the height of the water slide in the figure below is h1 = 1.55 m and h2 = 1.35 m, and the person's initial speed at point A is 0.593 m/s, at what location does the swimmer splash down in the pool?
*March 4, 2012 by Ashley*

**Phisics (Urgent)!!!!!!!!!!!!!!!!!!!!!!**

A gyroscope consists of a uniform disc of mass radius M= 1 kg and radius R= 0.3 m . The disc spins with an angular speed ω= 300 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizontal. The gyroscope is ...
*November 20, 2013 by Anonimus*

**physics**

One end of a cord is fixed and a small 0.300 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m as shown in the figure below. When è = 15.0°, the speed of the object is 6.20 m/s. At this instant, find each of the ...
*October 18, 2011 by carlton*

**Math**

I am trying to help my son in Algebra, the only thing is that I have forgot some of these thing.He has a word problem I can not figure it out please help a mother help her 9th grader. Q- The polygons below are similar. Find the unknown side lengths if c=24. Each measure is in ...
*November 13, 2007 by Mary*

**Geometry**

I Need help doing a geometry proof. In the figure below, PQ=RS. Prove PR=QS. ____________________ P Q R S
*February 5, 2012 by Jennifer*

**Trig**

3. In the figure below, the perimeter of the parallelogram ABCD is (6a + 8b + 29) and the perimeter of the triangle ACD is (3a + 4b + 32). What is the length of AC
*December 21, 2011 by Keaton*

**geometry**

In the figure below, the measure of arc AC is 88 degrees if angle ABC is equal to 88 degrees.
*February 19, 2012 by bob*

**physics**

The figure below shows an object of mass M = 1,276 g. It is free to move along a horizontal, frictionless surface. This object is further connected to a second object with a mass of m = 1,362 g by means of a massless string that extends around a massless, frictionless pulley. ...
*October 10, 2009 by m2a*

**math**

helow answer. show work how to figure out the below (1.2)square root + (2.8) sq. root = 3.1
*April 11, 2013 by Rosie*

**p**

A newly planted tree is supported against the wind by a rope tied to a stake in the ground, as shown in the figure below. The force of the wind, though distributed over the tree, is equivalent to a single force F, as shown in the figure. Find the tension in the rope. Assume ...
*March 26, 2012 by JOHN*

**Physics**

In the figure below, m1 = 3.8 kg, m2 = 5.2 kg, and the coefficient of kinetic friction between the inclined plane and the 3.8-kg block is μk = 0.3. Find the magnitude of the acceleration of the masses and the tension in the cord.
*September 26, 2012 by Tara*

**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 0.70 µC charge. (A = 0.70 µC, B = 6.50 µC, and C = -3.90 µC.)
*March 30, 2013 by Yannic*

**Algebra 2 *edit*(below)**

Hello I was wondering how this problem would be set up.If I can see how its set up im sure I can figure it out. thanks
*August 24, 2007 by Alyssa*

**Physics**

The boy on the tower of height h = 20 m in the figure below throws a ball a horizontal distance of x = 56 m. At what speed, in m/s, is the ball thrown?
*October 7, 2010 by V*

**Physics**

The boy on the tower of height h = 20 m in the figure below throws a ball a horizontal distance of x = 56 m. At what speed, in m/s, is the ball thrown?
*October 7, 2010 by V*

**Physics**

The boy on the tower of height h = 20 m in the figure below throws a ball a horizontal distance of x = 56 m. At what speed, in m/s, is the ball thrown?
*October 7, 2010 by V*

**physics**

The boy on the tower of height h = 20 m in the figure below throws a ball a distance of x = 52 m, as shown. At what speed, in m/s, is the ball thrown?
*February 9, 2011 by Anonymous*

**geometry**

find the surface area of the figure below. A cylinder which has a hemisphere on one side of cylinder and radius is 5 and the hight is 8.
*March 17, 2011 by zivar*

**geometry**

the figure below represents a building in the shape of a pentagon. using the scale 1 inch= 94 feet, what is the perimeter of the building?
*August 15, 2011 by Hanna*

**physics**

The boy on the tower of height h = 18 m in the figure below throws a ball a distance of x = 62 m, as shown. At what speed, in m/s, is the ball thrown?
*February 3, 2012 by Sanda*

**geometry**

In the figure below, find x if segment AB = 12 cm and segment AD = 2x + 6
*June 4, 2012 by Anonymous*

**physics**

The location of two particles at t = 0 is shown in the figure below. The particles are initially at rest. Each particle is subject to a constant force, as indicated in the figure. (Take m1 = 2.06 kg and m2 = 0.95 kg.) (a) Find the position of the center of mass at t = 0. xcm...
*February 10, 2011 by Anonymous*

**math**

Okay. so say their is a list of numbers: x y 0 3 1 5 2 7 3 9 4 11 I know how to answer a question like "use an equation to figure out Y when X is..." but how do you figure do " figure out X when Y is" ? I konw that the formula is y=mx+b but i don't know how to do it thanks
*May 26, 2009 by Dawn*

**Physics**

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 15.0 m/s. The cliff is h = 66.0 m above a flat horizontal beach. How long after being released does the stone strike the beach below the cliff? I got 3.67 s. With what speed ...
*June 1, 2008 by Elisa*

**math**

joe thinks the perimeter of the figure is 15 units he is right is it reasonable that the completed figure is a pentagon? Why? the figure that is not completed is 5 on top 5 on the bottom and one side 2.
*April 23, 2010 by corrie*

**Calculus**

The figure at the right consists of a rectangle topped by an isosceles right triangle. The area of the figure is 200 sq. feet. The minimum perimeter of the figure is ___ft.
*February 16, 2014 by Anonomous*

**AP Physics - Equilibrium**

The Achilles tendon is attached to the rear of the foot as shown in the figure below. When a person elevates himself just barely off the floor on the ball of one foot, estimate the tension Ft in the Achilles tendon (pulling upward) and the (downward) force Fb exerted by the ...
*November 13, 2009 by Henry*

**physics **

The figure below shows four charges located at the corners of a square with sides of length a = 8.0 cm. If the charges q1, q2, q3, and q4, are all 4.0 Coulomb, then:
*February 13, 2011 by jg*

**math **

Determine the energy to heat a cube of gold with a volume of 19.0{\rm cm}^{3} from 15^\circ C to 37^\circ C. (Figure 1) Refer to the tables of densities (Figure 2) and to the table of the specific heats (Figure 3)
*January 24, 2013 by Anonymous*

**MATH**

1. Find the area of the figure.(The figure is a trinagle with a dotted line directly down the middle with the measurements of 4 by 9 ft) A~18 FT2? 2. Find the area of the figure. Use 3.14 for and round your answer to one decimal place(The figure is a cirle with...
*September 20, 2009 by A~*

**math**

Figure is triangle c is biggest side, a and b are same size 19. In figure-4, compute c if a = 3 and b = 2. 20. In figure-4, compute b assuming 27a= and c =2b. ()
*August 19, 2010 by Anonymous*

**Math**

Two corresponding sides of similar polygons have the ratio 5:4. The perimeter of the smaller figure is 40, what is the perimeter of the larger figure...I need help trying to figure this out...and the steps!
*February 7, 2010 by Steph*

**math**

a figure skater must trace a figure eight on the ice that consists of two perfect circles, each with radius 11 feet. How far does the skater go one time around the figure eight?
*October 28, 2011 by unknown*

**math**

the scale factor for two figures is 3(new figure)to 2(old figure)the new figure has a side of 9.9 what is corresponding side in the old figure? A)6 B)6.6 c)6.06 D)6.16
*January 15, 2010 by makeeda*

**physics**

Four closed surfaces, S1 through S4, together with the charges -2Q, Q, and -Q are sketched in the figure below. The colored lines are the intersections of the surfaces with the screen.
*September 17, 2010 by chuck*

**physics**

The lens and mirror in the figure below are separated by d = 1.00 m and have focal lengths of +74.9 cm and -56.4 cm, respectively. An object is placed p = 1.00 m to the left of the lens as shown.
*March 24, 2013 by Pri*

**Physics**

For the system of two crates and a pulley in the figure below, what fraction of the total kinetic energy resides in the pulley? (Assume m1 = 14 kg, m2 = 10 kg and mpulley = 5 kg.) (( o )) | | | | [m1] | [m2]
*April 1, 2014 by Sarah*

**Physics**

In the figure below, m1 = 3.1 kg, m2 = 5.8 kg, and the coefficient of kinetic friction between the inclined plane and the 3.1-kg block is μk = 0.27. Find the magnitude of the acceleration of the masses and the tension in the cord. The incline is at at 30 angle.
*October 12, 2011 by Jimmy*

**Physics**

Two packing crates of masses 7.57 kg and 4.51 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 4.51 kg crate lies on a smooth incline of angle 40.0°.
*October 5, 2012 by Anonymous*

**physics**

Two racquetballs, each having a mass of 200 g, are placed in a glass jar as shown in in the figure below. Their centers lie on a straight line that makes a 45° angle with the horizontal.
*March 31, 2013 by Mike*

**physics**

Two racquetballs, each having a mass of 144 g, are placed in a glass jar as shown in in the figure below. Their centers lie on a straight line that makes a 45° angle with the horizontal.
*July 5, 2013 by Anonymous*

**physics**

Two racquetballs, each having a mass of 147 g, are placed in a glass jar as shown in in the figure below. Their centers lie on a straight line that makes a 45° angle with the horizontal.
*July 5, 2013 by Anonymous*

**intermediate algebra**

find two algebraic expressions for the area of each figure. first ,regard the figure as one large rectangle, and then regard the figure as a sum of four smaller rectangles 3 t,t,5
*July 10, 2011 by swirl*

**college algebra**

find two algebraic expressions for the area of each figure. first ,regard the figure as one large rectangle, and then regard the figure as a sum of four smaller rectangles x,10,8x
*January 2, 2014 by its a secret*

**physics**

Panic escape. The figure below shows a general situation in which a stream of people attempt to escape through an exit door that turns to be locked. The people move toward the door at speed vs = 3.7 m/s, are each d = 0.20 m in depth, and are separated by L = 1.75 m. The ...
*December 14, 2008 by john*

**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*

**Math**

Mary made two rectangular prims figures with four-1 inch cubes. Which statement is true about the volumes and surface areas of the two figures.( there is figure A and figure B made out of four cubes but in different position ) A. The surface areas of Figures A and B are the ...
*March 31, 2013 by Anonymous*

**physic**

A 660 N cat burglar is supported by cables in the figure below. Assume the angle è of the inclined cable is 36.0°. Find vertical cable? Thank you so much for your help.
*October 12, 2009 by Chan*

**physics **

The figure below shows four charges located at the corners of a square with sides of length a = 8.0 cm. If the charges q1, q2, q3, and q4, are all 4.0 Coulomb, then: find the x and y components
*February 13, 2011 by jg*

**physics**

If the string in one of the panels of the figure below is vibrating at a frequency of 5.0 Hz and the distance between two successive nodes is 0.39 m, what is the speed of the waves on the string?
*April 10, 2012 by Anonymous*

**Physics**

A shear force of 3.1 105 N is applied to an aluminum bar of length L = 19 cm, width w = 5.2 cm, and height h = 2.3 cm as shown in the figure below. What is the shear deformation Äx?____m
*December 5, 2012 by Robert*

**physics**

Consider the freight train in Figure below. Suppose 17 boxcars pass by in a time of 10.7 s and each has a length of 15.3 m. (a) What is the frequency at which each boxcar passes? (b) What is the speed of the train?
*January 20, 2014 by Anonymous*

**English grammar**

The bar graph below show the TV viewing habits of Koreans. What is the part of speech of 'below'? Is 'which is' omitted before 'below'?
*November 26, 2007 by John*

**Maths do not see my last question displayed wrong**

Use two straight cuts to break the figure below into three pieces and re arrange them to from a square 12345 are the squares 1 234 5
*August 31, 2013 by Tim*

**Physics**

A 1.45 mol sample of an ideal gas (γ = 1.40) is carried through the Carnot cycle described in the figure below. At point A, the pressure is 28.5 atm and the temperature is 600 K. At point C, the pressure is 1.00 atm and the temperature is 400 K. How do I get the pressure ...
*June 6, 2011 by Alex*

**Algebra 1--Please, help me!**

The side of a trinagular roof is to have the same height h and base b (with a 2 below) as the side of a trapezodial roof. a. What is the ratio of the area of the triangular roof to the area of the trapezoidal roof? (For a triangle, A = 1/2b(with a 2 below)h. For a trapezoid, A...
*May 23, 2014 by Victoria*

**physics**

The figure below gives the speed v versus time t for a 0.510 kg object of radius 5.90 cm that rolls smoothly down a 30° ramp. What is the rotational inertia of the object? 1 kg·m2
*January 5, 2011 by Joey*

**physics**

Charges of +2.38 nC and -1.06 nC are located at opposite corners, A and C, respectively, of a square which is L = 1.13 m on a side (as shown in the figure below ). What is the electric potential at a third corner, B, of the square (where there is no charge)?
*January 31, 2012 by Ashley*

**Physics**

The car in the figure below travels a distance of 745 m along the track, and the driver finds that she has traveled through an angle of 475°. What is the radius of the track?
*September 6, 2012 by Anne*

**Math**

The car in the figure below travels a distance of 745 m along the track, and the driver finds that she has traveled through an angle of 475°. What is the radius of the track?
*September 6, 2012 by Anne*

**physics**

Consider the swimmer in the figure below. Suppose that his swimming speed relative to the water is 5.7 m/s, current = 2.2 m/s, and that the river is 10 m wide. How long will it take for him to cross the river?
*October 4, 2012 by Garcia*

**Physics**

One end of a cord is fixed and a small 0.470-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m as shown in the figure below. When θ = 21.0°, the speed of the object is 4.70 m/s. At this instant, find each of the ...
*September 22, 2011 by Cody*

**physics**

A small 5.00kg brick is released from rest 2.00m above a horizontal seesaw on a fulcrum at its center, as shown in the figure below . (radius of horizontal seesaw is 1.6m) a.)Find the angular momentum of this brick about a horizontal axis through the fulcrum and perpendicular ...
*December 15, 2009 by Anonymous*

**physics**

Find the angle at which a curve of radius r should be banked in order that a car moving at a speed v will not need any frictional force to round it in the figure below. (Use the following as necessary: r, v, and g.) θ =
*February 15, 2011 by Anonymous*

**Math 115**

how do you find the area of a figure the problem is listed below 25ft 10ft 10ft 40ft I am new to this and right about nowI am lost in the sauce.
*March 24, 2008 by CD*

**Physics**

The 1.4 kg, 40-cm-diameter disk in the figure below is spinning at 260 rpm. How much friction force must the brake apply to the rim to bring the disk to a halt in 4.5 s?
*November 18, 2010 by sara*

**physic**

The figure below shows a standing wave oscillating at 95 Hz on a string. The distance d between the two walls equals 70 cm. What is the wave speed? pic have 3 waves
*September 21, 2011 by Anonymous*

**physics**

The coefficient of friction between the block of mass m1 = 3.00 kg and the surface in the figure below is ìk = 0.365. The system starts from rest. What is the speed of the ball of mass m2 = 5.00 kg when it has fallen a distance h = 1.90 m?
*April 19, 2012 by zamdirhy*

**Physics**

Consider the system of blocks in the figure below, with m2 = 5.0 kg and è = 33°. If the coefficient of static friction between block #1 and the inclined plane is ìS = 0.24, what is the largest mass m1 for which the blocks will remain at rest?
*October 19, 2012 by Lily*

**Physics**

Someone posted the question below, stating that they knew the answer to part A but needed help with part B. Well even with the answer for A, I can't figure it out! Can you take a step back from the question below to show me the steps for solving part A? I've been working on ...
*October 14, 2008 by Anna*

**physics**

The force shown in the force vs. time diagram in the figure below acts on a 1.10 kg object. Find: (a) the impulse of the force exerted on the ball.
*October 21, 2012 by Anonymous*

**Physics**

Three sources of sound are distributed along a line, as shown in the figure. v is the speed of sound. Source A is at rest, and it emits sound waves with a frequency of 480 Hz. Source B is traveling at v/5 to the right, and it emits sound waves with a frequency of 960 Hz. ...
*September 3, 2013 by Ben*

**Physics**

Consider the figure below. (Let w1 = 150 N and w2 = 38.0 N.) (a) What is the minimum force of friction required to hold the system of the figure in equilibrium? N (b) What coefficient of static friction between the 150-N block and the table ensures equilibrium? (c) If the ...
*October 7, 2012 by Kali*

**college Physics**

A playground is on the flat roof of a city school, 5.2 m above the street below (see figure). The vertical wall of the building is h = 6.50 m high, forming a 1.3-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching...
*January 29, 2010 by Katie*

**math**

There are five questions on the section. These questions are for you to demonstrate your understanding of the steps related to the contents you studied this week. To earn any points in part two, you must show the steps you have used to find the answer in each of the cases: ...
*August 16, 2010 by harmony*

**physics**

The forces in the figure below are acting on a 2.1 kg object. Find the values of ax and ay, the x and y components of the acceleration. i.imgur. com/nNz9m. png this is one of the last problems on my homework that i just do not understand.. can someone please explain it to me? ...
*September 28, 2012 by kev*

**Physics**

Four point charges are at the corners of a square of side a as shown in the figure below. Determine the magnitude and direction of the resultant electric force on q, with ke, q, and a left in symbolic form. (B = 4q and C = 6.5q. Let the +x-axis be pointing to the right.) b|---...
*March 30, 2013 by Sofia*

**physics**

Two books of mass m1 = 6.9 kg and m2 = 3.8 kg are stacked on a table as shown in the figure below. Find the normal force acting between the table and the book on the bottom. im confused where to start
*September 9, 2010 by tommy *

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