13. A thin rod of length L a..

17,425 results, page 40

Physics

A thickness planer is a machine that uses a rotating blade to shave a thin layer of wood off the top of the surface. While operating, a piece of wood is inserted such that it causes the machine to struggle and slow down due to resistance of the lumber. Curiously, the 15 amp ...

Math

damn i cant post a drawing..there r 2 cubes, cube x and cube y and the length of the cube x is 12cm. A) find the volume of cube x. B) if cube y has a volume equal to 1/8 of the volume of cube x, find the length of its edge.

Physics

In a labratory experiment, a student measured the period of a swing for a 1 -kg pendulum for varing lengths, as shown below. Length (m) Period (s) 0.05 0.30 0.20 0.90 0.40 1.30 0.60 1.60 0.80 1.80 1.00 2.00 a.) Deterine the period of a pendulm whose length is 0.25 m. b.) Now ...

math word problems

A ladder is leaning against a building. The distance from the bottom of the ladder to the building is 9 ft less than the length of the ladder.how high up the side of the building is the top of the ladder if that distance is 2 ft less than the length of the ladder? the ladder ...

Math

A flat screen television is sized depending on the length of the diagonal (ex: a 40 inch flat screen has a 40 inch diagonal ). If a 32 inch television has a width that is 5 inches longer than its length. Determine the dimensions of the television (using exponential applications)

Chemistry Urgent

95.0mL of H2O is initially at room temperature (22.0∘C ). A chilled steel rod at 2.0∘C is placed in the water. If the final temperature of the system is 21.3∘C , what is the mass of the steel bar? Specific heat of water = 4.18 J/g⋅∘C Specific heat...

Chemistry/Math

I went to my teacher numerous times. I'm still not using the right formulas or equations. Please help. A commonly used rule of thumb is that average velocity in a pipe should be about 1 m/s or less for "thin" (viscosity about water). If a pipe needs to deliver 6,000m^3 of ...

Physics

For a resonance tube apparatus (open ended on one side) with a total tube length of 1.00 meter, on a day when the speed of sound is 340 m/s, how many resonance positions will be observed as the piston position is varied for a frequency of 500 Hz? and 1000 Hz? Use the n as the ...

PHYSICS REPOST

Consider a heavy rope with mass per unit length 2.10 kg/m; a length L=18.00 m of the rope is hanging vertically from a support, as shown. If the support and rope are placed in an elevator accerlerating downward with a=0.800 m/s^2, what is the tension in the rope at point P? (...

Physics , static fluids

hello, I hope you can help... A diver accustomed to standard snorkel tubing of length 25 cm tries a self-made tube of length 8.6 m. During the attempt, what is the pressure difference (in kPa) between the external pressure on the diver's chest and the air pressure in the diver...

algebra

The length of the sides of a square measures 2x-5. The length of a rectangle measures 2x and the width measures x+2. For what value of x is the perimeter of the square the same as the perimeter of the rectangle.

Math

The average length of a Rufous hummingbird is 3 1/2 inches. The average length of a Broad tailed hummingbird is 4 1/2 inches. How much shorter is the Rufous hummingbird? 1?

physics

A parallel beam of light is incident on diverging lens of focal length 12cm. The emergent beam passes through a converging lens of focal length 20cm placed coaxial with it. The beam which finally emerges from the converging lens,comes out parallel. What is the separation of ...

Algebra 2

Stacey has a square piece of cloth. She cuts 3 inches off of the length of the square and 3 inches off of the width. The area of the smaller square is 1/4 the area of the original square. What was the side length of the original square? a.1 in. b.2 in. c.6 in. d.12 in. Help ...

Physics

A wooden bridge crossing a canyon consists of a plank with length density λ = 2 kg/m suspended at h = 10.0 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000 N, which are attached to the ends of the plank, as shown in the figure. ...

Design of suitable pin size

Appreciate if someone can take the time to check my answers to the following question. If wrong, could you point me in the right direction. A round bar, 800 mm long, CSA 15 mm^2 experiences an applied tensile load of 6 kN and stretches elastically by 3 mm. a) Calculate the ...

stats

write a brief paragraph addressing the question. Which is more likely, that a person is killed by lightning, or that a person is killed by lightning while playing golf in a thunderstorm? I believe it would be while playing golf due to holding the metal golf club, acting as a ...

Physics

A pendulum consists of a massless rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn through a complete circle. The pendulum is inverted, so the mass is directly above the pivot point, and then released. The speed of the mass...

physics

A pendulum consists of a massless rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn through a complete circle. The pendulum is inverted, so the mass is directly above the pivot point, and then released. The speed of the mass...

mechanics

The change in length of a steel wire under an applied load can be halved by keeping all other conditions constant but using: A. a different material having a Young's modulus half that of steel B half the cross sectional area of the steel wire C half the length of steel wire D ...

Math Help!!!

please check my answers 1. Find the length of the hypotenuse of a right triangle with the legs of 9cm and 12cm A.8 B.21 C.15 *** D.225 2.The length of a hypotenuse of a right triangle is 13cm. The length of one leg is 5cm. Find the length of the other leg. A.14 B.144 C.8 D.12...

perimeter and area

the perimeter of the think thing thingamabob is 24 centimeters. All the thingamabob's sides are same length. How long are they? What is the Thingamabob's area? L = ? A = ? I think Length = 6 I think Area = 36 is this correct? if not can you show or explain? thank you

Algebra

Hi! Can you please re-check my answers. Mt teacher said some of them are not right but when I do it again, I still come up with the same answer. This is about Variations. Thanks! 1. What kind of variation equation is a=kbcd --> my answer is joint variation 2. If the joint ...

Chemistry-

The question I have to answer is: If two peaks of gas chromatogram are too close, what changes in experimental conditions (factors affecting separation) could you make to separate them more effectively? Answer: I thought the answer would be the length of the column. If you ...

physics

German silver wire has a cross-sectional area of 2.047 x 10^-3 cm^2. How many meters are needed to make a resistance of 100 (omega)? I can't find the resistivity of German silver wire. I've googled a few places, but each one gives me a different number. Can you please tell me ...

College Physics

Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. The only way that the station can exhaust thermal energy is by radiation, which it does using thin, 2.2 m-by-4.1 m panels that have ...

Physics

A solid disk rotates in the horizontal plane at an angular velocity of 0.0653 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.156 kg·m2. From above, sand is dropped straight down onto this rotating disk, so that a ...

Physics

A solid disk rotates in the horizontal plane at an angular velocity of 0.0684 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.190 kg·m2. From above, sand is dropped straight down onto this rotating disk, so that a ...

physics

A 3.60 kg object is attached to a vertical rod by two strings as in the figure below. The object rotates in a horizontal circle at constant speed 7.15 m/s. (a) Find the tension in the upper string. 139 . Your response is within 10% of the correct value. This may be due to ...

physics

A 3.60 kg object is attached to a vertical rod by two strings as in the figure below. The object rotates in a horizontal circle at constant speed 7.15 m/s. (a) Find the tension in the upper string. 139 . Your response is within 10% of the correct value. This may be due to ...

Physics

A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, and it is horizontal, as shown in the ...

Physics

Two lenses are in contact. One of the lenses has a focal length of +10.0cm when used alone. When the two are in combination, an object 20cm away from the lenses forms a real image 40cm away from the lenses. What is the focal length? I am not sure how to approach this problem. ...

Physics C: Mechanics

A 1.00 kg mass is attached to a string wrapped around a cylinder of radius 0.05m. Two masses are connected with a rod and attached to the end of the cylinder, perpendicular to its axis. as the mass falls from rest the rotating contraption spins through 12 pi radians in 1.2 ...

algebra

As isosceles triangle has two sides of equal length. If the third side of an isosceles triangle is five inches longer than one of the equal sides, and the perimeter is 26 inches, find the length of each side.

physics

The diffusion rate for a solute is 4.0E-11 kg/s in a solvent-filled channel that has a cross-sectional area of 0.50 cm^2 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 cm^2 and a length of 0.10 cm? m/t= ??E-11 kg...

math 5th grade

The width of a picnic table is 3 times its length. If the length is 5 6 -yd long, what is the area of the picnic table in square feet? sides are 2 1/2 yd and 5/6 yard. then to find area 2 1/2 x 5/6 = 2 5/12 y2 how do I find square feet?

physics

Cora is a passenger in a car traveling east along a country highway that is parallel to a railroad track and clear of any traffic. Her friend Liz is driving. They come up behind the last car of a train on the track. Initially, the train is moving a little slower than they are...

Pre-Calculus

The period T (in seconds) of a simple pendulum is a function of its length l (in feet), given by T(l) = 2pi sq root of l/g, where g = 32.2 feet per second per seconds is the acceleration of gravity. Express the length l as a function of the period T. If T=2pi*sqrt(l/g) then do...

Physics

A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +41.7 cm. Precisely 36.1 cm behind this lens is a concave lens with a focal length f2 = -13.9 cm. The object to be photographed is 4.06 m in front of the objective lens. How far ...

math

A picture is copied onto a sheet of paper 8 inches by 10 inches. A 1 inch margin is left all around the picture. Find the length, width, and area of the picture. the length is 10 and the width is 8 but i don't understand how the 1 inch margin comes into play? is the area just ...

physic

A cylindrical conductor of length l and uniform area of cross-section A has resistance R. What is area of cross section of Another conductor of the same material of length 2l and resistance R ?

Science

a wire of length 4m and radius 1 mm has a resistance of 1 ohm.what length of the wire of the same material at the same temperature and of radius 2 mm will also have a resistance of 1 ohm

algebra

A spring with a 2-pound weight suspended is 9 inches in length. With a 5-pound weight suspended, the length increases to 13.5 inches. Which equation does not represent the behavior of the spring? y – 2 = 1.5(x – 9) y – 9 = 1.5(x – 2) y = 1.5x + 6 y – 13.5 = 1.5(x – 5)

physics

A cylindrical conductor of length L and uniform area of cross section A has resistance R. What will be the area of cross section of another conductor of length 2L and resistance R of the same material?

Physics

A cylindrical conductor of length l and unifrom area of across section A has resistance R another conductor of length 2l and resistance R of the same material has area of across section

Math

Each of the three dimensions of a cube with sides of lenth s centimeters is decreased by a whole numer of centimeters. The new volume is cubic centimeters is given by V(s)=s^3-13s^2+54s-72. a) Find V(10) b) If the new width is s-6 centimeters, then what are the new length and ...

Precalculus

Instead of graphing the arc length against the height, Olivia decides to make graphs of Paul's x - and y - coordinates against time. Suppose paul walks 1 meter per second. How would Olivia's graph compare to her graph of arc length against the height?

Math

There's a rectangle. On 1 side is 8 which is the Length side I have to find out how long the width side is. The whole perimeter has to equal 25 P=25 So if both length sides are 8 then that equals 16. Now I have to see how much both width sides are I did 25-16 and I got 9 then ...

precalc

The cost of manufacturing a semi-circular window is the cost of the glass pane together with the cost of the framing material. When ordering this window, a customer specifies the length of the base of the window, shown as l. b. Write a function named k that relates the area of...

Algebra 1

A square pyramid has a volume of 560 in to the third power, a base length of 10 in., and a height of 14 in. What is its base width? My textbook states that the formula v = 1/3lwh relates the volume of a square pyramid to its base length l, width w, and height h. However, I am ...

IT/210

Design a program that models the worms behavior in the following scenario: A worm is moving toward an apple. Each time it moves, the worm cuts the distance between itself and the apple by its own body length until the worm is close enough to enter the apple. The worm can enter...

Physics

A steel bar has an initial length of 40 meters when the temperature is 20 oC. At what final temperature will the steel bar have a final length of 40.01 meters? The coefficient of linear expansion of steel is 12E-6 (1/C).

math

the length of a rectangle is 1 cm less than twice its width. the area is 28 cm squared. find the dimensions of the rectangle. Just translate the English into "math" "the length of a rectangle is 1 cm less than twice its width" l=2w-1 "the area is 28" w(2w-1) = 28 solve as a ...

Physic please help!

A converging lens has a focal length of 0.060 m. An object is located 0.020 m to the left of this lens. A second converging lens has the same focal length as the first one and is located 0.100 m to the right of it. Relative to the second lens, where is the final image located?

geometry

5. The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (a) Find the area of triangle PQR. (b) Find the length of the projection of segment PQ onto segment PR. (c) Find the length of segment QR. (d) Find the sizes of ...

geometry

ABCD is a parallelogram. Let C′ be a point on AC extended such that the length of AC′=1.2AC. Let D′ be on the segment BD such that the length of BD′=0.9BD. The ratio of the area of the quadrilateral ABC′D′ to the area of the parallelogram ...

programming

Write a program that will read in a length in feet and inches and will output the equivalent length in meters and centimeters. Use at least three functions : one for input, one or more for calculating and one for output. There are 0.3048 meters in a foot, 100 centimeters in a ...

Algebra

Please help me with this Algebra problem: The length of a rectangle is 91 less than six times the width of the rectangle. If the perimeter of the rectangle is 84 centimeters, what is the length of the rectangle? Write a system of equations for this situation and find its ...

Math

as the weight held by a spring increases, the length of the spring increase 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?

maths

the length of a rectangle is 4 times than its width. the area of the rectangle is 1024cm2 find the length of the rectangle the perimeter of the rectangle 4 square has the same perieter as that its rectangle. Find the area of the square.

Math, Algebra

Need to check answers. Q1. Find the length of the following segment created by these pairs of endpoints: (0, 1), (0, 7) Answer : 0 Q2. Find the length of the following segment created by these pairs of endpoints: (9, 6), (12, 6) Answer : 3 Q3. Find the length of the following ...

math

Can someone please help me with the following problems Determine if the triple numbers are can be sides of a right triangle? sqrt(10)sqrt(13)sqrt(23) The length of thy hypotenuse of a right triangle equals the length of one of legs of the triangle A) always true B) sometimes ...

physics

An organ pipe is open at both ends. It is producing sound at its sixth harmonic, the frequency of which is 257 Hz. The speed of sound is 343 m/s. What is the length of the pipe The open pipe has to be of length lambda/2, and odd number. Fundamental L= fundamentallambda/2 ...

math (geometry)

It says: Find the area of a rectangle with length 12 inscribed in a circle with radius 7.5. I know when they're talking about a radius with a figure, they're talking about the length between the center of the circle to a corner of the figure. But that usually works only with a...

Math

Denise is designing a storage box in shape of a cube. Each side of the box has a length of 10 inches .She needs more room and decides to construct a larger box in a shape of a cube with a volume of 2000 cubic inches.By how many inches, to the nearest tenth ,should she increase...

arithmetic

Denise 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 and decides to construct a larger box in the shape of a cube with a volume of 2,000 cubic inches. By how many inches, to the nearest tenth, should she ...

algebra

Denise 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 and decides to construct a larger box in the shape of a cube with a volume of 2,000 cubic inches. By how many inches, to the nearest tenth, should she ...

calculus

A triangle ABC has sides of length AB = 3 inches and AC = 4 inches. Let t denote the angle at vertex A, and let s denote the length of the remaining side BC. If t increases at the rate of 2 radians per second, at what rate (in inches per second) does s change at the instant ...

Algebra

A room is shaped like a trapezoid. There are windows on the walls that are parallel. The distance between the windows is x. The length of one windowed wall is 3 less than the x, and the length of the other windowed wall is 3 more than x. The area of the room is 354 ft². Find ...

math

Can I please get my answers double checked? True or False 1. The tangent function is used to find the angel between two vectors. True 2. If two vectors are orthogonal, then their dot product is -1. False 3. The length of the projected vector is always shorter than the length ...

Physics

An ice puck of mass m revolves on an icy surface in a circle at speed v at the end of a horizontal string of length L. The tension in the string is T Find the mass of the puck when the length of the string is 2.2m , string tension is 5.0N , and the tangential speed of the puck...

Math

A fish tank in the shape of a cuboid has length 320 cm. Its length is twice that of its width. to enhance viewing the area of the four vertical faces should be maximized. Find the optimum viewing area of a fish tank that is fixed to the wall so that the area of three faces ...

math

I have to find the area of a kite. I am only given part of the longest diagonal (12 cm) and half of the other diagonal (9 cm). I know the formula is diagonal 1 times diagonal 2 times 1/2. I have the length for one diagonal which is 18 cm b/c 9+9. How can find the length of the...

Physics

A lighted candle is placed 38 cm in front of a diverging lens. The light passes through the diverging lens and on to a converging lens of focal length 10 cm that is 5 cm from the diverging lens. The final image is real, inverted, and 19 cm beyond the converging lens. Find the ...

physics

A thick, vertical iron pipe has an inner diameter of 0.070 m. A thin aluminum (α = 23x10-6 (C°)-1) disk, heated to a temperature of 89°C, has a diameter that is 4.4x10-5 m greater than the pipe's inner diameter. The disk is laid on top of the open upper end of the pipe...

phys

The proper length of one spaceship is 5 times that of another. The two spaceships are travelling in the same direction and, while both are passing overhead, an Earth observer measures the two spaceships to be the same length. If the slower spaceship is moving with a speed of 0...

math inequalities please check

A landscape designer has to design a rectangular pad of concrete at the centre of a rock garden. The length must be less than or equal to twice the width; the perimeter must be less than or equal to 40 m; and the area must be greater than or equal to 60 m^2. 1.)Write as system...

Math

Could someone verify the answers. I don't know question C and D Thank you! 1. In physics, the formula for centripetal force is F = mv^2/ r where m is the mass, v the velocity, and r the radius. a) Find the length of a string when a mass of 2.4kg is being spun at a speed of 5 m...

dressmaking

IN making a two-piece flared skirt,the amount of flare is limited by the A) length of the skirt B) type of fabric C) size of the figure D) tendency to sag I cant decide between A,C or D because it does mention that if more flare is wanted,allow greater length and width,but it ...

PHysics

A thin, light wire is wrapped around the rim of a wheel, as shown in the following figure. The wheel rotates without friction about a stationary horizontal axis that passes through the center of the wheel. The wheel is a uniform disk with radius 0.400 m. An object of mass 4.50...

Math/209

Dimensions of a Box A box is made from a rectangular piece of metal with length 50 inches and width 40 inches by cutting out square corners of length x and folding up the sides. (a) Write an expression that gives the surface area of the inside of the box. (b) If the surface ...

Math

The Mulraneys hired a contractor to build an addition to their home. The Contractor proposed a rectangular room with an area of 300 square feet. The Mulraneys asked the contractor to change the area to 363 feet by increasing both the length and the width by the same percentage...

math

An open box is to be made from a flat square piece of material 20 inches in length and width by cutting equal squares of length x from the corners and folding up the sides. (a) Write the volume V of the box as a function of x. Leave it as a product of factors; you do not have ...

Chemistry

The molar mass of the reagent, Fe(NH4)2(SO4)2.6H2O is 392.14 g/mol. Now suppose the measured mass of Fe(NH4)2(SO4)2.6H2O during the practical was 0.0218 g and this was dissolved in 50ml of deionized water that contains 1 to 2ml of concentrated sulphuric acid and transfer ...

PHYSICS

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. The athlete is able to rotate the ball at the rate of 7.80 rev/s when the length of the chain is 0.600 m. When he increases the length to 0.900 m, he is able to rotate the ball only 6.51 rev/s

math

Jung bought 15 years of clothes. he used 2 1/3 yards of cloth to make a jacket. He cut the remaining cloth into equal pieces.find the length of each of the remaining pieces? my answer : 15 used 2 1/3 cut 12 3/4 to 2 equal pieces length: 12 3/4 x 2 =24

math

ung bought 15 years of clothes. he used 2 1/3 yards of cloth to make a jacket. He cut the remaining cloth into equal pieces.find the length of each of the remaining pieces? my answer : 15 used 2 1/3 cut 12 3/4 to 2 equal pieces length: 12 3/4 x 2 =24

Math

Andreas garden is shaped like a parrelelogram with a base length of 6.5 meters and a height of 4.8 meters. She wants to increase the area by doubling the base length and increasing the height by 1.5 meters. By how much will the changes increase the area of the garden. Explain ...

math

A designer enlarged both the length and the width of a rectangular carpet by 60 percent. The new carpet was too large so the designer was asked to reduce its length and width by 25 percent. By what percent was the area of the final design greater than the area of the original ...

Physics

There is a small amount of water at the bottom of a sealed containerof volume 4.3 liters which is otherwise full of an ideal gas. A thin tube open to the atmosphere extends down into the water, and up to a height of 238 cm. The system is initially a pressure that maintains a ...

physics

There is a small amount of water at the bottom of a sealed containerof volume 4.3 liters which is otherwise full of an ideal gas. A thin tube open to the atmosphere extends down into the water, and up to a height of 238 cm. The system is initially a pressure that maintains a ...

Math

The length of a rectangle is 1 more than the side of a square and the width of the rectangle is 1 less than the side of the square. of the area of the rectangle 35, find the length of the side of the square.

math

Mariela loves car races,so she buys a model of the winning car from a race she watched. On the box she sees that the length of yhe model is about 8.5 inches. She knows that the actual car is about 208 in. long and 72.5 in. wide. About how wide should the model be? Length/Width...

Computer science

Write a function in Python: Given a list of words, indicate whetehr the list constitutes a "Word Ladder." A Word Ladder is a series of words where each succesding word changes by only one letter. You may assume that all words will be of the same length, but you may not assume ...

it210

Design a program that models the worm's behavior in the following scenario: A worm is moving toward an apple. Each time it moves, the worm cuts the distance between itself and the apple by its own body length until the worm is close enough to enter the apple. The worm can ...

MATH - GEOMETRY/TRIGONOMETRY

A 6 foot man stands by a 30 foot radio tower and casts a 10 foot shadow. How long is the shadow cast by the tower and what time is it? I got 50 feet for the length of the shadow. What I cannot find out is, what time is it? I NEED THE TIME OF DAY. **NOT** THE LENGTH OF THE ...

electromagnatic

a) Find the force on a straight conductor of length 0.30m carrying a current of 5.0A in the direction, where the field is T. i. b) A conductor of length 2.5m located at z=0, x=4m carries a current of 12.0A in direction. Find the uniform in the region if the force on the ...

math

A right rectangular prism is packed with cubes of side length Fraction 1 over 6 inch. If the prism is packed with 12 cubes along the length, 3 cubes along the width, and 2 cubes along the height, what is the volume of the prism?

Physics

The top string of a guitar has a fundamental frequency of 300 Hz when it is allowed to vibrate as a whole, along all its 60.0 cm length from the neck to the bridge. A fret is provided for limiting vibration to just the lower two-thirds of the string. The guitarist can play a "...

Physics

Look up or derive the frequencies of the standing waves of a length of wire, L, clamped at the ends and under tension. What are the similarities and differences between a vibrating string and a resonating pipe? Does the diameter of the wire matter? Does the diameter of the ...

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