Saturday

July 30, 2016
Number of results: 15,842

**Question**

There's this object I don't know what its called: It is made out of metal the metal is shaped into a circle (empty in the middle) with another metal pieced into a triangle (empty in the middle) that is attached to the circle with these two loops with another circle attached to...
*May 29, 2010 by Amy~*

**Physics**

A yo-yo is spun from rest by pulling on the string with a constant tension of 2.0 N. The radius of the inner rod on which the string is strung round is 0.50 cm. The tension is applied for 5.0 seconds after which the yo-yo is observed to spin with an angular velocity of 15 rad/...
*May 18, 2014 by Bob*

**math**

A rectangular room is 5 meters longer than it is wide, and its perimeter is 22 meters. a. Letting w represent the width of the rectangle, write an equation that represents the perimeter of the room. = 22 b. Find the width of the room. The width is: meters. c. Find the length ...
*September 26, 2015 by mya*

**math**

A rectangular room is 5 meters longer than it is wide, and its perimeter is 22 meters. a. Letting w represent the width of the rectangle, write an equation that represents the perimeter of the room. = 22 b. Find the width of the room. The width is: meters. c. Find the length ...
*September 26, 2015 by mya*

**physics**

a spring of spring length 5times 10 tothe power of 4 N/m,is between a rigid beam and the output piston of a hydraulic lever.an mpty container with negligable lengthsits on th input piston.the input piston has an area of Ai and the output piston has area 22.0Ai,initially spring...
*May 24, 2012 by emitty*

**Physics**

Why do your vowels examples ("aaah", "eee", "uhh") sound different then when I make them? Explain. Tension, mass density and the length of our vocal cords differ so would that be the reason why they sound different? For instance: a child's voice is usually higher pitched than ...
*March 1, 2008 by Andrea*

**physics**

I need to sketch a graph of the gravitational potential energy (y axis) of a block as a function of its kinetic energy (x axis). The block is at the top of an inclined plane. It starts from rest and slides without friction down the length of the incline. I need help with ...
*March 20, 2011 by Nabil*

**Mathbio in 12th science**

2)a stone of mass 1kg tied to one end of a string of length 1m whirld in a horizontal circle with a costant speed 2 radian/second tension of the string is. A)0.5n b)1n c)2n d)4n 3)the orbital velocity of a satelight close to the earth is v then the orbital velocity at a height...
*October 18, 2012 by Harsha*

**physics**

What can we conclude from the attractive nature of the force between a positively charged rod and an object? 1. The object has no net charge. 2. Cannot be determined. 3. The object does not have an appreciable negative charge. 4. The object does not have an appreciable ...
*February 20, 2010 by Anonymous*

**physics help!**

An electron enters the region of a uniform electric field between two oppositely charged parallel plates as shown, with an initial velocity of 3 x 106 m/s. The electric field between the plates is measured to be E = 200N/C. The horizontal length of the plates is 10cm. a. Find ...
*May 12, 2011 by UnKnown*

**Algebra**

a). The length of the classroom is 30 ft. The length of the room on the scale drawing is 6 in. Is this correct? Explain why or why not. Michael has made a scale drawing of his classroom. The scale for his drawing is 0.5 in. : 3 ft. b). One of the student tables is 6 ft long. ...
*October 4, 2015 by Alyssa*

**physics**

Three identical conducting spheres are located at the vertices of an equilateral triangle ABC. Initially the charge the charge of the sphere at point A is qA=0and the spheres at B and C carry the same charge qB=qC=q. It is known that the sphere B exerts an electrostatic force ...
*May 13, 2013 by stranger*

**chemistry**

95.0mLmL of H2O\rm H_2O is initially at room temperature (22.0∘C\rm{} ^{\circ}C). A chilled steel rod at 2.0∘C\rm ^{\circ}C is placed in the water. If the final temperature of the system is 21.3∘C^{\circ}C, what is the mass of the steel bar? Specific heat of ...
*March 11, 2014 by Anna*

**Maths**

An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...
*May 1, 2013 by Maths lover Please Help...*

**Physics**

'A push broom consists of a 1.70 metre long handle with mass with mass 0.825kg, with a 0.500m wide brush with mass 0.420kg attached to the end of the handle' 'Treating both the handle and the brush as thin rods, find the moment of inertia I of the broom about an axis parallel ...
*May 14, 2016 by Cummins*

**physics **

A box is placed 50 cm away from a double convex lens. The image is on the opposite side of the lens, is inverted and 50 cm away from the lens. find: a)the focal length of the lens. b)the height of the image. c) using the focal length that you found, how far from the lens would...
*May 30, 2013 by kate *

**Chemistry**

A volume of 80.0mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If the final temperature of the system is 21.20 ∘C , what is the mass of the steel bar? Use the following values: specific heat of ...
*February 25, 2015 by Billy*

**Language**

On sweet plum blossoms The sun rises suddenly. Look a mountain path! Has spring come indeed? On that nameless mountain lie thin layers of min. Temple bells die out. The fragrant blossoms remain. A perfect evening! from details about blossom in both the first and third haika ,...
*February 2, 2016 by Meliza *

**physics**

The 60kg collar slides on the curved rod in the vertical plane with negligable friction under the action of constant force F in the cord guided by the small pulley at D. If the collar is released from rest at A, determine the force F which will result in the collar striking ...
*October 31, 2009 by Jessi*

**physics mechanics**

A block weighing 17 N oscillates at one end of a vertical spring for which k = 120 N/m; the other end of the spring is attached to a ceiling. At a certain instant the spring is stretched 0.24 m beyond its relaxed length (the length when no object is attached) and the block has...
*September 16, 2012 by abu*

**physics**

Two uniform planks, each of mass m = 4.41 kg and length L = 2.11 m, are connected by a hinge at the top and by a chain of negligible mass attached at their centers, as shown in the figure. The assembly will stand upright, in the shape of an A, on a frictionless surface without...
*August 20, 2014 by Anonymous*

**math**

Alex must wrap two boxes. Both boxes are right rectangular prisms. The smaller box has a length of 12 inches. The larger box is similar to the first and has a length of 48 inches. Find the ratio of the amount of paper needed to wrap the large box to the amount of paper needed ...
*May 2, 2010 by Hannah*

**Math**

Please help!!! Scott bought 54m of fencing to enclose a rectangular plot of land. The width of the rectangular plot is 12m. Assume Scott uses all the fencing. What is the length of the rectangular plot of land? a) choose a variable to represent the length of the rectangular ...
*March 22, 2013 by Cherie*

**math**

a 27 inch board is to be cut into three pieces so that the second piece is 3 times as long as the first piece and the third piece is 5 times as long as the first piece. If x represents the length of the first piece, find the length of all three pieces.
*December 11, 2012 by mandy*

**physics**

Hi! could any help me please, thank you. 1.An object is placed 17.8 cm from a first converging lens of focal length 13 cm. A second converging lens with focal length 24 cm is placed 10 cm to the right of the first converging lens. (Take the direction to the right to be ...
*April 18, 2010 by Chan*

**Math **

Hi Drawing a diagram will help: A ladder 5m long leans against a wall, with the top of the ladder (B) reaching 4m up the wall and the foot of the ladder (A) is 3m from the wall (C). A man is at a point D which is 2m up the ladder.Point E lies on line AC and Point F lies on ...
*July 8, 2010 by Mintz*

**physics**

When a tuning fork is held over the open end of a very thin tube, as in the figure below, the smallest value of L that produces resonance is found to be 33.0 cm. (a) What is the wavelength of the sound? [Hint: Assume that the displacement antinode is at the open end of the ...
*April 15, 2012 by Jolie*

**Geometry:(**

The surface of a rectangular prism is the sum of: the product of twice the length L and the width w the product of twice the length and the height h and the product of twice the width and the height. **** Write an expression that represents the surface area of a prism!!!!!!!
*November 27, 2012 by Cassie:)*

**Math**

1.what is the slant height for the given pyramid to the nearest whole unit. pyramid base= 12 cm height=8 cm A.5 cm B.9 cm C.14 cm D.10 cm What is the length of the diagonal for the given rectangular prism to the nearest whole unit? the unit is the length=6, width=5, height=9 A...
*January 14, 2016 by HELP ASAP*

**Calculus**

For the parabola y^2=4px, where p, the focal length, is a constant, the focal point, f(p,0), is on the x-axis. Point S is 10 units from the point F and the segment SF makes a 60degree angle with the x-axis. The slope of segment TF is twice the negative of the slope of the ...
*May 11, 2014 by Anon*

**science**

explain how you can change the lenght of a vibrating string. tell how changing the lenght changes the sound produced by the string. how would you change both the tension and the length and keep the pitch the same? suppose you changed both the length and the tension of the ...
*December 10, 2009 by Christina*

**Algebra 1**

1) Find the possible values of a, if the distance between the points is 5, and the coordinates are (1, 1) and (4, a). I don't know how to solve this one. 2) in a right triangle the length of the hypotenuse is 14 and the length b of one of the legs is 8. find the length a of ...
*May 31, 2013 by Eri*

**trigonometry**

Gabe is spending two weeks on an archaeological dig. He finds a fragment of a circular plate that his leader thinks may be valuable. The arc length of the fragment is about 1/6 the circumference of the original complete plate and measures 1.65 inches. A similar plate found ...
*May 28, 2010 by candace*

**physics**

A 0.005-kg bullet traveling horizontally with a speed of 1.00 103 m/s enters an 20.3-kg door, imbedding itself 10.6 cm from the side opposite the hinges as in the figure below. The 1.00-m-wide door is free to swing on its hinges. (c) At what angular speed does the door swing ...
*October 26, 2010 by Amy*

**Calculus**

A piece of elastic is attached to two nails on a flat board, with a button attached to the midpoint of the elastic. The nails are 5 cm apart. You stretch the elastic by pulling the button along the board in a direction that is perpendicular to the line between the nails. A. ...
*January 15, 2012 by Mishaka*

**English**

Can you tell me of my corrections are ok? Thank you a lot in advance! 1.I explained to Fred how to get there so that he wouldn’t get lost. 2.I explained him (or to him) how to get there. 3.Imagine/Supposing you were in a wood during a storm, what would you do? (and not: ...
*June 6, 2010 by Franco*

**Geometry**

1.1.Determine whether the regular pentagon has reflection symmetry, rotation symmetry, both, or neither. If it has reflection symmetry, state the number of axes of symmetry. If it has rotation symmetry, state the angle of rotation. For each type of symmetry, explain how you ...
*October 17, 2014 by D*

**Algebra**

The surface area of a cube can be found using the formula A = 6s^2 where A represents the surface area of the cube and s represents the length of one edge. My teacher wants me to draw a cube that has a length of at least 5 inches. She also wants to know the independent ...
*October 12, 2014 by Sue*

**Maths**

An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...
*April 30, 2013 by MAths lover Please Helppppp*

**math**

A rectangular prism has a length of x+2, a width of x+1, and a height of 4. The volume of this rectangular prism is 24. What is the length and width of this rectangular prism.
*April 11, 2011 by Lia*

**Chemistry**

I conducted a Gas Chromatography experiment using Flame Ionisation Detector (FID).A capillary column was used. 1)Blank 2) Standard 3) Sample 4)Blank 5)Standard The above was injected into the system. In 2)Standard chromatogram,a sharp, thin peak was observed between the 2 ...
*February 18, 2012 by mandy*

**Math**

A blue rope is three times as long as a red rope. A green rope is 5 times as long as the blue rope. If the total length lf the three ropes is 508.26 meters, what is the length of the blue rope?
*January 16, 2015 by Anonymous*

**math **

Troy is building a pool that is proportional to the Olympic-sized pool. The width of his pool will be 625 centimeters. find the scale factor troy will use to build his pool use the scale factor to show the length of troys pool if the length of the Olympica pool is 50 meters ...
*December 16, 2010 by Court*

**Math**

I already posted this, but wanted to say that I have the answers and it is 1.68 is less than or equal to x is less than or equal to 9.10 Cone Problem Beginning with a circular piece of paper with a 4- inch radius, as shown in (a), cut out a sector with an arc of length x. Join...
*January 3, 2011 by Taylor*

**probability**

lengths of the different pieces are independent, and the length of each piece is distributed according to the same PDF fX(x). Let R be the length of the piece that includes the dot. Determine the expected value of R in each of the following cases. In each part below, express ...
*April 29, 2014 by JuanPro*

**Physics **

A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway. The width of the intersection is 25.0 m. The plane decelerates through the intersection at a rate of 5.0 m/s2 and clears it with a final speed of 29 m/s. How much ...
*January 22, 2016 by Adriana*

**physics**

A 20. kg block is placed at the top of a 10. meter-long inclined plane. The block starts from rest and slides without friction down the length of the incline. (A diagram shows a height of 5.0 m, the 10. m length of incline/hypotenuse and the 20. kg block sliding on the ...
*March 20, 2011 by Sejul*

**math**

The boundary of a park is shaped like a circle. The park has a rectangular playground in the center and 2 square flower beds, one on each side of the playground. The length of the playground is l and its width is w. The length of each side of the flower beds is a. Which two ...
*May 1, 2015 by desaray *

**Physics**

1. The total length of a spring is 0.25 m. What it is unstretched and 0.30 m when a force of 17.82 N is applied to it. What will be the length when 26.72 N is applied to it? 2. A piller with a cross sectional area of 1.5 m^2 supports a portion of a building with a mass of 1.5 ...
*September 3, 2014 by Cielo*

**math**

A storage room measures 14.25 feet in length by 12.5 feet in width by 8.4 feet in height. It contains a box which is 2.5 feet in length, 5.2 feet in width and 1.5 feet in height . How many cubic feet of storage space are left in the room (rounded to the nearest cubic foot)?
*July 12, 2012 by lamedia*

**math**

a storage room measures 11.35 feet in length by 9.5 feet in width by 8.3 feet in height. it contains a box which is 4.25 feet in length 6.5 feet in width and 4.0 feet in height.how many cubic feet of storage space are left in the room rounded to the nearest cubic foot
*April 7, 2014 by erika*

**geometry**

Deshawn built a model train car. The length of the model train car is 6 in. The scale Deshawn used to build the model train car is 1:36. What is the actual length of the train car in FEET?
*December 2, 2013 by Elizabeth*

**geometry**

If the length of the abdomen is 2.25 inches. The length of the thorax is 1.75 inches. The walking stick's abdomen is .5 inches longer than the thorax. It's abdomen is _____ time longer than its thorax.
*August 25, 2015 by sam*

**Medical physics**

A silver cube (density of silver is 10 g/cm3) with side length of 3 cm weighs more than an aluminium cube (density of aluminium is 2.96 g/cm3) with side length of 4 cm. The cubes are each suspended by a string and allowed to be completely immersed in two identical jars ...
*March 21, 2015 by JAMES*

**cancer/clot/leeches**

my dad has cancer and has developed a clot in his leg which is not the dangerous one, but is very painful. he had an operation where they put plates and pins in his leg due to the cancer eating away his femur to about one inch. he is limited to small pain killers and cannot go...
*May 15, 2008 by lana*

**Math **

A glass box shaped like a rectangular prism has with 7 inches length 9 inches height 12 inches is being shipped in a larger box with whipped 10 inches length 10 inches in height 15 inches the space between the glass box on the shipping box will with styrofoam peanuts how many ...
*March 30, 2014 by Kahoho*

**physics help **

Two thin rectangular sheets (0.15 m 0.50 m) are identical. In the first sheet the axis of rotation lies along the 0.15 m side, and in the second it lies along the 0.50 m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final ...
*November 28, 2010 by student*

**physics**

Two thin rectangular sheets (0.22 m 0.35 m) are identical. In the first sheet the axis of rotation lies along the 0.22-m side, and in the second it lies along the 0.35-m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final ...
*November 30, 2010 by mackenzie m*

**Physics**

Two thin rectangular sheets (0.29 m 0.40 m) are identical. In the first sheet the axis of rotation lies along the 0.29-m side, and in the second it lies along the 0.40-m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final ...
*December 5, 2010 by Brandon*

**physics**

Two thin rectangular sheets (0.09 m 0.46 m) are identical. In the first sheet the axis of rotation lies along the 0.09-m side, and in the second it lies along the 0.46-m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final ...
*May 30, 2012 by chelsea*

**physics**

Two thin rectangular sheets (0.09 m 0.46 m) are identical. In the first sheet the axis of rotation lies along the 0.09-m side, and in the second it lies along the 0.46-m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final ...
*May 31, 2012 by Cindy*

**Calculus**

A fence 5 feet tall runs parallel to a tall building at a distance of 7 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building? [Hint: Determine the length of a ladder that touches the ...
*June 22, 2009 by Z32*

**algebra**

A 24 meters pole is held by a three guy wire into vertical position. Two of the guy wires are of equal length. The third wire is 5 meters longer than the other two and is attached to the ground 11 meters farther from the foot of the pole than the two equal wires. Find the ...
*February 23, 2015 by tammy*

**Algebra, URGENT!!!**

1) The first leg of a right triangle is 6 cm longer than its second leg. If the hypotenuse has a length of 8 cm, find the exact lengths of the two legs. First Leg: Second Leg: 2) The length of a rectangle is 10 m longer than its width and the area of the rectangle is 480 m2. ...
*November 20, 2013 by Bailey*

**physics help**

wo thin rectangular sheets (0.13 m 0.52 m) are identical. In the first sheet the axis of rotation lies along the 0.13 m side, and in the second it lies along the 0.52 m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final ...
*November 27, 2010 by jason*

**trig**

hi honestly speaking i have no idea how to even start this problem but i know that a cube is to the 3rd power here is the problem Denis is designing a storage box in the shape of a cube.Each side of the box has a length of 10 inches. she needs more room anddecides to ...
*February 3, 2010 by anum*

**geometry**

hi honestly speaking i have no idea how to even start this problem but i know that a cube is to the 3rd power here is the problem Denis is designing a storage box in the shape of a cube.Each side of the box has a length of 10 inches. she needs more room anddecides to ...
*February 3, 2010 by anum*

**mathematics**

An equilateral triangle with side length 33 is divided into 332 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...
*April 30, 2013 by Sambaran G.*

**physics**

when tension 'F' is applied the elongation produced in uniform wire of length l,radius r is e; when the tension 2F is applied the elongation produced in another uniform wire of length 2l and radius 2r made of same material is ans: 1.)1.0 e
*February 4, 2013 by kala*

**Physics Question**

Here is a demonstration Pascal used to show the importance of a fluid's pressure on the fluid's depth : An oak barrel with a lid of area 0.17 m^2 is filled with water. Along, thin tube of cross-sectional area 4.7×10−5 m^2 is inserted into a hole at the center of the lid...
*May 7, 2011 by Catherine*

**Math**

Hey People!! I need the answers to these questions really bad!!! OK so here we go.... Which side lengths form a triangle that is similar to triangle ABC? 30, 21,45 20, 14, 28 40,30,60 17,20,25 Find the missing length for the pair of similar figures. 1.125m 4.5m 7m 16m Find the...
*November 5, 2014 by Trinity*

**Algebra 1**

First of all, we're learning how to solve equations with variables on both sides. Write and solve an equation for the situation. An architect is designing a rectangular greenhouse. Along one wall is a 7-ft storage area and 5 sections for different kinds of plants. On the ...
*November 3, 2011 by Mercedez*

**Math**

A plumber charges $45 for a service call, plus $70/h for her time. a. Find the cost of a two hour service call. b. How long was a services call that cost $150? Also ....... as the weight held by a spring increases, the length of the spring increase proportionally. suppose a 2-...
*April 19, 2011 by Jessica*

**physics**

A converging lens of focal length 7.740 cm is 19.7 cm to the left of a diverging lens of focal length -5.51 cm. A coin is placed 18.2 cm to the right of the diverging lens. a. Find the location of the coin's final image. b. Find the magnification of the coin's final image. Any...
*January 28, 2012 by marisol*

**programming**

•Hi I really need help with with this I dont think I'm understanding how to do it maybe because i have never done this Design a program (you can use pseudocode to write your program) that models the worm’s behavior in the following scenario: A worm is moving toward an apple. ...
*October 15, 2009 by Eden*

**programming**

•Hi I really need help with with this I dont think I'm understanding how to do it maybe because i have never done this Design a program (you can use pseudocode to write your program) that models the worm’s behavior in the following scenario: A worm is moving toward an apple. ...
*October 15, 2009 by Eden*

**Algebra**

1. How far is the Willis Tower from Navy Pier, given that each unit is approximately 1/8 mile? Round your answer to the nearest tenth of a mile. The Willis Tower is at the point (-6,-3) and NP is at the point (10,9). I did this calculation: d^2 = (10 - (-6))^2 + (9 - (-3))^2...
*March 13, 2014 by Student*

**physics**

Neurons are components of the nervous system of the body that transmit signals as electrical impulses travel along their length. These impulses propagate when charge suddenly rushes into and then out of a part of the neutron called an axon. Measurements have shown that during ...
*January 21, 2008 by Jen*

**11th grade physics**

The magnetic field strength along the axis (x'ox) of a solenoid is measured ( o being the center of the solenoid). The adjacent graph represent the length: (The graph represents the variation of B (mT) as a function of x (cm). The numbers on the y axis are 1 2 3 and on the x ...
*May 18, 2016 by vicky*

**English**

In kids zones there is no new items for upcoming Eid festival still now.Some products quality are very poor.For example kids SKD salowar's inside seam is not well finished which can be inconvenient for kid's body.some motifs are not attached properly,kid's dresses are not ...
*June 19, 2016 by mukti*

**physics**

A wire has a resistance of 27.2 ohms. It is melted down, and from the same volume of metal a new wire is made that is 3 times longer than the original wire. What is the resistance of the new wire? Resistance and length of wire are proportional, but what I am unsure of is if ...
*July 25, 2012 by Lauren*

**Math Help**

1.) Find the arc length y=2/3x ^3/2 + 2 over (14,16) 2.) Find the arc length y=8x^3/2+7 over (0,6)
*May 15, 2016 by Erica*

**Trigonometry**

Gabe is spending two weeks on an archaeological dig. He finds a fragment of a circular plate that his leader thinks may be valuable. The arc length of the fragment is about 1/6 the circumference of the original complete plate and measures 1.65 inches. A similar plate found ...
*April 19, 2010 by Anonymous*

**Physics**

An organ pipe that is closed at one end has a fundamental frequency of 122 Hz. There is a leak in the church roof, and some water gets into the bottom of the pipe, as shown in the Figure. The organist then finds that this organ pipe has a frequency of 300 Hz. What is the depth...
*November 20, 2011 by Physics Help!*

**science**

Two insulated beakers contain different amounts of identical liquids. Beaker A contains twice as much liquid as Beaker B. The temperature of Beaker A is 80°C. The temperature of Beaker B is 40°C. An aluminum rod connects the beakers, and the system is left alone for several ...
*March 21, 2015 by Isabel*

**READING**

UNDERLINE THE VERB OR VERB GROUP IN EACH SENTENCE. THEN WRITE A NEW SENTENCE USING THE VERB OR VERB GROUP YOU UNDERLINED. BRAN, A THIN BROWN SKIN, COVERS RICE. I KNOW (COVERS) IS SUPPOSED TO BE UNDERLINED, BUT I DON'T GET WHAT IT MEANS WHEN IT SAYS "THEN WRITE A NEW SENTENCE ...
*February 23, 2012 by Celest*

**Computer Science (MATLAB)**

Given an arbitrary one dimensional vector v imputed by the user for example v='Helllllloooooo' or v='Helo' I was able to append empty characters onto any one dimensional vector that the user can enter so that way the total length of the vector is a multiple of 8 characters of ...
*November 14, 2011 by Jhon*

**writing to explain**

The perimeter of rectangle Y is equal to its area. Rectangle Z has the same perimeter as rectangle Y. The length of rectangle Z is 5 inches an the width is 3 inches. Explain how you can find the length and width of rectangle Y.
*March 7, 2012 by crystal*

**Physics**

as the weight held by a spring increases, the length of the spring increases proportionally. Suppose a 2-lb weight stretches a spring to 15 in., and a 12-lb weight stretches the same spring to 20 in. What is the length of the spring with no weight attached?
*April 2, 2012 by LD*

**Math**

Two particles X and Y joined by a rigit rod of negligible mass, move along a smooth horizontal plane. Particle X has mass 7.7kg and is pushed by an external force Fx of magnitude 73.01N. Particle Y has mass 5.68kg and is pulled along the plane by an external force Fy of ...
*September 7, 2012 by Anonymous*

**calculus**

a farmer has a 2040 ft of fencing and wishes to fence off two separate fields. one of the fields is to be a rectangle with the length twise as long os the width. while the other field is to be square. determine the dimension of the fields if the farmer wishes to maximize the ...
*November 17, 2011 by robert*

**science**

The two insulated beakers contain equal amounts of identical liquids. The temperature of Beaker A is 85°C. The temperature of Beaker B is 40°C. A metal rod connects the beakers. Five minutes later, the temperature of Beaker A is 75°C and the temperature of Beaker B is 50°C. ...
*March 21, 2015 by Isabel*

**physics**

A physics student playing with an air hockey table (a frictionless surface) finds that if she gives the puck a velocity of 5.30 m/s along the length (2.80 m) of the table at one end, by the time it has reached the other end the puck has drifted 5.19 cm to the right but still ...
*March 4, 2012 by Nick*

**Pre-Algebra (Pythagorean Theorem)**

Russell Gossman is training for the Olympics. He wants to know the distance across Lake Royal so he can write how far he went in his training logbook each day. If from one point on the shore to one side in 13 km and from the same point to another side of the lake is 16 km. ...
*October 26, 2013 by Jessie*

**Algebra 2**

Posted by Christian on Monday, May 7, 2007 at 11:34am. The area of a rectangular blanket in square centimeters is 40x^2+2x-65. The width is 4x-5 cm^2. Find the dimensions of the blanket in terms of x. For Further Reading Algebra 2 - Brown, Monday, May 7, 2007 at 2:40pm What is...
*May 7, 2007 by Christian*

**Calculus optimization**

A rectangular storage container with a lid is to have a volume of 8 m. The length of its base is twice the width. Material for the base costs $4 per m. Material for the sides and lid costs $8 per m. Find the dimensions of the container which will minimize cost and the minimum ...
*November 20, 2011 by A*

**HELP!! OPTIMIZATION CALCULUS **

A rectangular storage container with a lid is to have a volume of 8 m. The length of its base is twice the width. Material for the base costs $4 per m. Material for the sides and lid costs $8 per m. Find the dimensions of the container which will minimize cost and the minimum ...
*November 23, 2011 by Kay*

**physics**

A square bar with a mass of 0.830 kg and 19.3cm long (l) rests on two parallel horizontal rails that are 18.0cm apart (d) and 120.0cm long (L) as shown in the figure. (By horizontal it is meant that the rails lie in a plane perpendicular to the local gravitational field.) The ...
*February 20, 2015 by Trisha*

**Physics**

The lowest frequency in the audible range is 20Hz. A)What is the length of the shortest open-open tube needed to produce this frequency? B)What is the length of the shortest open-closed tube needed to produce this frequency?
*April 25, 2013 by Zach Neal*

**Science**

Find the mean time for each ramp length Mean 3.6s Find the ball's acceleration for each mean time using the equation below where D is distance or ramp length and T is time Acceleration=2D/T^2 1.5m(Distance) Use 3.6
*October 2, 2014 by Coleson*