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October 1, 2016

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Geometry (check)
A model is made of a car. The car is 3 meters long and the model is 3 centimeters long. What is the ratio of the length of the car to the length of the model? A. 3 : 3 B. 1 : 100 C. 1 : 3 D. 100 : 1*** Deal or No Deal?
March 18, 2016 by Carpe_Diem

math
The diameter of a hydrogen atom is about 5×10^-11 meter. Suppose 8.4×10^8 hydrogen atoms were arranged side by side in a straight line. Multiply these numbers to find the length of this line of atoms. What is the length in scientific notation? 42×10^−3 meter 0.042 meter ...
May 19, 2016 by Claire

6th grade math ratios
The table shows the length of four tracks on an album and the total number of beats in that song. Album Track Length (min:sec) Total Beats Track 1 3:44 332 Track 2 4:36 387 Track 3 4:12 365 Track 4 3:49 328 Place the tracks in order from least to greatest number of beats per ...
November 3, 2015 by Kyson

Heat
A silver bar 0.125 meter long is subjected to a temp change from 200c to 100c. What will be the length of the bar after the temp change? You have to look up the coefficent of linear expansion for silver. New length= originallength(1+deltaTemp*coefficent) where deltatemp= 200C-...
August 12, 2005 by missy white

Algebra
5. A piece of rope is cut into two pieces. One piece is used to form a circle and the other is used to form a square. Use a length of rope of 20 feet to write a function f representing the area of the circle as a function of the length of one side s of the square.
January 23, 2015 by Ben

math
On a geo board how would you draw a right triangle that showed 4 units squared? would you draw it with the height being the length of 4 squares and the base being the length of 2 squares which would be 1/2 (b x h) which would be 1/2 (2 x 4) = 4 units squared? Or would you do ...
November 1, 2012 by Brandi

general physics
An axle of a mass of 10 kg, length 10 cm and radius .1 m is free to rotate about the axis which runs the length of the axle, throuhh it's center. A chain of mass 4kg is fastened to the axle at one end, wound exactly 6 times around the axle, and a rock of mass 1.8 kg attached ...
December 9, 2014 by sara

geometry
Dru is challanged by her geomtry teacher to estimate the height of the school flag pole without measuring. She decided to walk off the length of the shadow cast by the pole by successively walking the noted length of her own shadow. If Dru is 5ft 6inches tall and she estimates...
November 14, 2011 by alisa

Stats
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm. 1. One of the petals is 0.2 cm wider ...
March 28, 2013 by Judy

Stats
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm. 1. One of the petals is 0.2 cm wider ...
March 28, 2013 by Judy

science
The total energy of motion in the molecules of a substance is called? ?is the average amount of energy of motion in the molecules of a substance. A ? Is a thin glass tube with a bulb on one end that contains a liquid usually mercury or a colored alcohol. The energy transferred...
October 8, 2014 by emma

Math
I'm doing some word problems on finding the areas of rectangles, its just like all complicated. I don't understand how to do them. For example: A square field had 3 m added to its length and 2m added to its width. The area is 90 m2(squared). Find the length of a side of the ...
April 29, 2009 by Michelle

chemistry
15. On October 21, 1982, the Bureau if the Mint changed the composition of pennies. Instead of an alloy of 95% Cu and 5% Zn by mass, a core of 99.2 Zn and 0.8% Cu with a thin shell of copper was adopted. The overall composition of the new penny was 97.6% Zn and 2.4% Cu by ...
September 12, 2010 by kelly

Physics
The A string of a violin is 31 cm long between fixed points with a fundamental frequency of 440 Hz and a mass per unit length of 5.8×10^−4 kg/m. What are the wave speed in the string? What are the tension in the string? What is the length of the tube of a simple wind ...
December 7, 2010 by Jake

Pre-Calc
A wire 100 centimeters in length is cut into two separate pieces (not necessarily equal). ON epiece is bent to form a square and the other to form a circle. Let x equal the length of the wire used to form the square. a. Write the function that represents the are of the two ...
January 22, 2014 by Andy G

Geometry
The ratio of the volume of cube A to the volume of cube B is 64 to 27. Use this information to determine the ratio of the length of a side of Cube A to the length of a side of cube B.
April 26, 2011 by Nicole G.

physics
A puck of mass 4 kg is attached to a spring of force constant 100 N/m and natural length 0.07 meters. The other end of the spring is attached to a fixed pivot. The puck is set into circular motion so that the spring is stretched 0.03 meters from its natural length as the puck ...
November 26, 2012 by rebecca

Math
Determine whether the two figures are similar. If so, give the scale factor of the smaller figure to the larger figure. Smaller figure: Length: 11 Width: 7 Height: 7 Larger figure: Length: 33 Width: 28 Height: 14 yes; 1:2 yes; 1:7 yes; 1:3 no I see a pattern among the two ...
May 2, 2016 by SkatingDJ

physics
"A solid cylinder and a thin-walled hollow cylinder have the same mass and radius. They are rolling horizontally along the ground toward the bottom of an incline. They center of mass of each cylinder has the same translational speed. The cylinders roll up the incline and ...
April 1, 2011 by Seth

physics
"A solid cylinder and a thin-walled hollow cylinder have the same mass and radius. They are rolling horizontally along the ground toward the bottom of an incline. They center of mass of each cylinder has the same translational speed. The cylinders roll up the incline and reach...
April 3, 2011 by Seth

math
A passenger train travelled at an average speed of 72 km/h. A man on the passenger train observed a goods train, which was travelling at a speed of 54 km/h, in the on-coming direction. If the goods train passed him in 10 seconds, find the length of the goods train. Is it ...
September 3, 2012 by Im

Algebra 1
You are designing a wall mural that will be composed of squares of different sizes. One of the requirements of your design is that the side length of each square is itself a perfect square. 1. If you represent the side length of a square as x^2, write an expression for the ...
December 4, 2013 by Jynessa

physics
The solar wind is a thin, hot gas given off by the sun. Charged particles in this gas enter the magnetic field of the earth and can experience a magnetic force. Suppose a charged particle traveling with a speed of 9.80 x 10^6 m/s encounters the earth's magnetic field at an ...
February 8, 2011 by aml

Math
Tom has three pieces of rope with lengths of 140 cm, 168 cm and 210 cm. He wishes to cut the three pieces of rope into smaller pieces of equal length with no remainders. a) what is the greatest possible length of each of the smaller pieces of rope? b) how many of the smaller ...
September 9, 2016 by Dara

chemistry
Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm. What is the radius of a gallium atom? The face-centered gold crystal has an edge length of 407 pm. Based on the unit cell, calculate the density of gold. Type of atom Fraction in...
November 24, 2008 by ea

Physics
A 100 kg crate rest at the back of the bed of a pick up truck. The length of the crate is 1 m in the length of the bed is 4 m. There is no friction between the bed of the truck in the crate. If the truck is traveling at 25 m/s just before it hits the wall, how long before the ...
March 3, 2015 by David

Algebra 2
A box with no top is to be constructed from a piece of cardboard whose length measures 12 inches more than its width. the box is formed by cutting squares that measures 4 inches on each sides from 4 corners and then folding up the sides. If the volume of the box will be 340 ...
March 15, 2013 by April

math
Rihanna planned a rectangular courtyard for a park and made a scale drawing using inches as the unit of measurement. She originally planned for the length of the actual courtyard to be 54 feet, but she decided to change it to 72 feet. If the length of the courtyard is 18 ...
September 7, 2016 by Brianna

maths
The length and breadth of a rectangle are (3x - 4y) and (2x - 3y) units resp. Find its area (i) If the length is increased by 3y units and the breadth is increased by 2y units, what would the area of the new rectangle be? (ii) Find the difference between the area of the two ...
September 14, 2011 by unknown

Trigonometry
I am trying to help my child out with a problem but yeah I am finding it veyr hard. 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 ...
June 21, 2010 by Britt

Physics
The Achilles tendon, which connects the calf muscles to the heel, is the thickest and strongest tendon in the body. In extreme activities, such as sprinting, it can be subjected to forces as high as 13.0 times a person's weight. According to one set of experiments, the average...
November 13, 2007 by Christina

Physics Help!!! solids and fluids
During a transatlantic flight, you drink a bottle of water and tightly close its lid again. Back on the ground during taxiing to the terminal, you notice that the thin plastic bottle is crushed, and you eyeball it to be only about 80 percent of its original volume (the photo ...
November 8, 2010 by Molly

Physics - same ? as marina but im smarter, lol
Marina is my bf and we both attend a educational program called proyecto science. In it, when we were to attend the physics course, we had this ?: T = 2š² L/G in this equation, T represents time, L represents Length and G represents Gravity. We are supposed to use dimensional ...
July 2, 2008 by shivangi

Calculus
Gloria would like to construct a box with volume of exactly 45ft^3 using only metal and wood. The metal costs $15/ft^2 and the wood costs $6/ft^2. If the wood is to go on the sides, the metal is to go on the top and bottom, and if the length of the base is to be 3 times the ...
November 4, 2015 by Dave

Calculus
the measurement on one side of a right triangle is found to be 9.5 inches inches, and the angle opposite that side is 27 degrees,45' with a possible error of 15'. (round answers to two decimal places) a) Approximate the percent error in computing the length of the hypotenuse. ...
April 4, 2013 by sancho

MAth
the measurement on one side of a right triangle is found to be 9.5 inches inches, and the angle opposite that side is 27 degrees,45' with a possible error of 15'. (round answers to two decimal places) a) Approximate the percent error in computing the length of the hypotenuse. ...
April 5, 2013 by jay

Calculus
the measurement on one side of a right triangle is found to be 9.5 inches inches, and the angle opposite that side is 27 degrees,45' with a possible error of 15'. (round answers to two decimal places) a) Approximate the percent error in computing the length of the hypotenuse. ...
April 5, 2013 by Jay

area, perimeter
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 and the width is 3 inches. explain how you can find the length and eidth of rectangle y.
April 4, 2011 by susie

math
A rectangle has a width of 15 inches and a diagonal of 17 inches. Find the length of the rectangle in inches. 15^2 + b^2 = 17^2 225 = b^2 = 289 0 + b^2 = 289 – 225 B^2 = 64 B = SQRT of 64 = 8 The length of the rectangle in inches equals 8 inches.
June 8, 2016 by David

math
. Find the volume of the sphere with a radius of 9. Use š = 3.14 and round your answer to the nearest tenth. 4. Find the volume of an ellipsoid with a semi-major axis of length 10 and the first semi-minor axis has length of 6 while the second semi-minor axis has length of 4. ...
April 18, 2011 by BreAnna

Math
16.Eliot spent 24 minutes solving 8 math problems.At that rate, how many math problems can he solve in 54 minutes? a.12 B.16 C.18 D.24 A? 17.Ronald got 92% of the problems correct on a test.Which number could also represent 92%? A.9.2 B.0.092 C.9/2 D.46/50 D 18.Lakeshmi made a...
March 23, 2013 by Jerald

Java programming
can anybody help me.. Multidimensional Array Use a two-dimensional array (for example of 3 by 3) to simulate the addition operation of two matrices. Sample output: the first matrix: 1 2 3 1 0 1 1 2 1 the second matrix: 1 1 1 2 2 2 3 3 3 The total of two matrices: 2 3 4 3 2 3 5...
April 14, 2013 by noh

Math
1. A gardener has 140 feet of fencing to fence in a rectangular vegetable garden. Find the dimensions of the largest area he can fence. Find the possible rectangular area he can enclose. 2. Suppose a farmer has a large piece of land and he wants to make a rectangular fence for...
August 13, 2014 by Regina

Math
A jewelry box is designed such that its length is twice its width and its depth is 2 inches less than its width. The volume of the box is 64 cubic inches. Use synthetic division to find the roots of the polynomial equation. Are the roots all rational numbers? Ans: Yes, the ...
November 17, 2014 by Anonymous

geometry
Two secant segments are drawn to a circle from a point outside the circle. The external segment of the first secant segment is 8 centimeters and its internal segment is 6 centimeters. If the entire length of the second secant segment is 28 centimeters, what is the length of ...
December 3, 2013 by Rachel

geometry
Two secant segments are drawn to a circle from a point outside the circle. The external segment of the first secant segment is 8 centimeters and its internal segment is 6 centimeters. If the entire length of the second secant segment is 28 centimeters, what is the length of ...
December 3, 2013 by Rachel

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 q A =0 and the spheres at B and C carry the same charge q A =q B =q. It is known that the sphere B exerts an electrostatic...
May 12, 2013 by steven lou

Algebra
I posted this yesterday but no one told me if my answers were correct. Can someone please check my answers. 1. Solve. –7x + 1 + 8x = x + 1 A) Identity B) No solution C) 1 D) 0 My answer: A) Identity 2.The length of one of the equal legs of an isosceles triangle is 8 cm less ...
April 22, 2007 by Noah

Statistics - Urgent
If there were two groups: One group who saw a yardstick before estimating its length Another group who did not see a yardstick before estimating its length Would this be a matched pairs design (a person from both groups estimates at the same time, then the next pair, etc.)? Or...
May 26, 2010 by Bob

Calculus
The length of a rectangle is increasing at a rate of 9 cm/s and its width is increasing at a rate of 7 cm/s. When the length is 15 cm and the width is 10 cm, how fast is the area of the rectangle increasing?
November 9, 2010 by JJ

Maths
1. Sketch the curves y=e^x and y=e^-2x, using the same axes. The line y=4 intersects the first curve at A and the second curve at B. Calculate the length AB to two decimal places. 2. Find the coordinates of the turning point on the curve y=2e^3x+8e^-3x and determine the nature...
February 18, 2009 by Anonymous

Roper
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.1 g of copper and asked to make a wire, using all the metal, with a resistance of 2.0 (ohms). Copper has a density of 8900 kg/m^3. What length will you choose for your wire? What diameter will...
March 24, 2011 by Daniela

PHYSICS !!!
The diffusion rate for a solute is 4.0 10-11 kg/s in a solvent-filled channel that has a cross-sectional area of 0.50 cm2 and a length of 0.220 cm. What would be the diffusion rate m/t in a channel with a cross-sectional area of 0.30 cm2 and a length of 0.10 cm?
November 30, 2015 by myheadhurts

Mathematics
Mathematics: A chord of radius 12cm subtends an angle of 150 degree at the centre of the circle. Calculate. A. Perimeter of the circle (Ps) B. Area of the circle. (Account) C. Length of the circle (Lc) D. Length of the arc (Last) E. Perimeter of sector (Ps) F. Area of sector (...
June 18, 2016 by Olagunju

Physics
Standing waves are set up on two strings fixed at each end, as shown in the drawing. The two strings have the same tension and mass per unit length, but they differ in length by 0.55 cm. The waves on the shorter string propagate with a speed of 41.8 m/s, and the fundamental ...
November 30, 2009 by Daniel

AP CALC. AB
Two sides of a triangle have lengths 13 m and 17 m. The angle between them is increasing at a rate of 5 degrees/ min. How fast is the length of the third side increasing when the angle between the sides of fixed length is 60 degrees/min? Round the result to the nearest ...
November 29, 2014 by Jacke

PHYSICS
A variable length air column (closed on one end) is placed just below a vibrating wire of mass 5.00g, which is fixed at both ends. The length of the air column is gradually increased from zero until the first position of resonance (first harmonic) is observed at 34 cm. The ...
February 11, 2015 by Aaron

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

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

maths
A rectangle has length & width in the ratio of 3:2.If the length is increased by 8 & width is increased by 50%.The ratio of new perimeter to original perimeter is 8:5.Find the area of new rectangle
November 24, 2010 by JAZZY

math
The length of a rectangle is 2 inches longer than the width. The area of the rectangle is 56 in^2. Find the dimensions. Also: The length of a rectangle is 3 ft more than the width. The area of the rectangle is 28 ft^2. Find the dimensions.
November 14, 2013 by Shanice M.

physics
the density of a cube is measured by it's mass and length of it's side if the maximum error in the measurement of mass and length are 3% and 2% respectively. the maximum error in the measurement of density of cube is?
May 24, 2014 by fatimah

Mathh
The scale drawing of a toy train has a width of 2 inches and length of 5 inches. What is the actual length of the toy train if the actual width is 8 inches? I got the answer of 40 inches.
March 7, 2016 by Kateri

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
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

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
'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

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

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

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

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

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
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

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 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

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

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

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

Math
A 36 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 s of all three pieces
September 24, 2016 by Colleen

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
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

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

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

Stats
The data below were gathered on a random sample of 5 basking sharks, swimming through the water and filter-feeding, i.e. letting the water bring food into their mouths. Body Length (meters) Mean Speed (meters/seconds) 4 0.89 4.5 0.83 4 0.76 6.5 0.94 5.5 0.94 a) If these sharks...
September 30, 2016 by leah

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

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