Number of results: 17,039

**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...

*January 12, 2012 by Casey*

**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 ...

*June 25, 2012 by Sarah*

**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 ...

*March 12, 2013 by Shay*

**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...

*April 18, 2016 by Makenzey*

**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 ...

*January 28, 2015 by jp*

**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...

*June 14, 2015 by ashley*

**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

*January 21, 2012 by Blanca*

**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

*September 3, 2015 by bandar*

**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

*September 3, 2015 by bandar*

**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 ...

*May 17, 2016 by Oscar*

**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 ...

*June 3, 2016 by jenny*

**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.

*July 24, 2012 by Eva*

**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...

*November 6, 2006 by Betty*

**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 ...

*May 28, 2010 by Victoria*

**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 ...

*January 22, 2010 by Bonnie*

**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 ...

*November 10, 2015 by Mara*

**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 ...

*December 16, 2013 by Griffin*

**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...

*November 3, 2011 by omg*

**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 ...

*January 8, 2011 by fati*

**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?

*October 5, 2015 by jeremiah*

**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 "...

*April 13, 2011 by ECU*

**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 ...

*February 8, 2007 by Krys*

**mechanics of materials**

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

*February 22, 2013 by dmkp*

**math**

Problem #1 Find the arc length corresponding to the given angle (in degrees) on a circle of radius 3.3. An angle of 39 degrees has an arc length of_______ units. Problem #2 The diameter of the wheels on your car (including the tires) is 25 inches. You are going to drive 295 ...

*January 19, 2017 by Anonymous*

**Rational Expressions Algebra**

Electronics The electrical resistance (r) of a cable varies directly (y=kx) as its length (l) and inversely (y= k/x) as the square of its diaeter (d). If a cable 16,000 ft long and 1/4 in. in diameter has a resistance of 3.2 ohms, what is the resistance of a cable that is ...

*July 21, 2007 by Tammy*

**Math: Pre-calculus**

A rancher wants to build a rectangular pen with an area of 180 . Let W be the width of the pen and L be the length of the pen. a) Find an equation for the perimeter P in terms of W and L . b) Use the given area to write an equation that relates W and L . c) Find the pen ...

*October 6, 2013 by Sarah*

**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 ...

*April 6, 2010 by Noodle*

**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 ...

*April 6, 2010 by Noodle*

**Calculus length of curve**

Hi--can anybody show me how to do this? Find the length of the curve r(t)= (sqrt2)i + (sqrt2)j + (1-t^2)k from (0,0,1) to (sqrt2, sqrt2, 0). Thank you!!!!!!!

*December 8, 2007 by Madison*

**Math**

The length of rectangle A is 1/3 of the length of rectangle B.Find the ratio of the area of rectangle A to the area of rectangle B?

*October 15, 2016 by Chase*

**Physics**

In the school cafeteria, a trouble-making child blows a 12.0 g spitball through a 25.0 cm straw. The force of her breath as a function of the distance along the length of the straw can be modeled as 10-50x^2-70x^3 where force is in newtons and x is in meters. (a) How much work...

*August 8, 2012 by Chad*

**geometry**

Hexagon A is a regular hexagon. The total length of all the sides of the hexagon is 24 inches. Hexagon A is dilated about its center to create Hexagon B. The length of each side of Hexagon B is inches. By what factor was Hexagon A dilated to create Hexagon B?

*April 22, 2012 by jessica*

**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 ...

*September 20, 2010 by Rudi*

**Science Important**

1. A toy of height 18.4 cm is balanced in front of a converging lens. An inverted, real image of height 33 cm is noticed on the other side of the lens. What is the magnification of the lens? 2. A convex lens or a magnifying glass is held 2.00 cm above a page to magnify the ...

*January 5, 2010 by Ramandeep*

**Gemotry**

On a sunny day object a has a shadow of length 3 meters and a meter stick has a shadow of 1.5 meters while object b has a shadow of length 6 meter how tall are object a & B

*March 5, 2012 by ahh help*

**Geometry**

If the length of the altitude of the hypotenuse of a right triangle is 8, and the length of the hypotenuse is 20, what are the lengths of the segments of the hypotenuse? (Let x and 20-x be the lengths of the segments of the hypotenuse.)

*March 2, 2011 by Camile*

**Math (Vectors)**

The vector u has length 15 and points at an angle of 25 degrees The vector v has length 20 and points at an angle of 55 degrees Find u*v=?

*May 20, 2016 by Giovanni*

**math**

Determine whether the statement is always true, sometimes true, or never true. 3) The length of the hypotenuse of a right triangle equals the length of one of the legs of the triangle. Answer choice: a.) always true b.) sometimes true c.)never true

*April 14, 2010 by nicole*

**Math**

BOOKBINDING Two square sheets of cardboard used for making book covers differ in area by 44 inches. An edge of the larger square is 2 inches greater than an edge of the smaller square. Find the length of an edge of the smaller square. My answer: Let x be the length of an edge ...

*October 30, 2016 by Trina*

**Physics**

The airplane can take off when its airspeed (speed of the air flowing over the wing) is equal to 65 knots. What is the length of runway required for the plane to take off if there is a 22 knots head wind? The runway at the Tallahassee Regional Airport has a length of 8000 ft. ...

*October 3, 2007 by Lindsay*

**physics**

A horizontal, straight wire carrying 12 A current from east to west is in the earth's magnetic field B. At this place, B is parallel to the surface of the earth, points north and its magnitude is 0.04mT. Determine the Magnetic Force on 1 m length of wire. If mass of this ...

*March 23, 2016 by sanjay*

**algebra**

If trend for the depreciation of the press continued, what would be its value in the year 2015? Show how you obtained your answer using the linear equation you found in part c). Answer: Show or explain your work here: e) If the trend continued, in how many years would the ...

*February 11, 2012 by jim*

**pre calc**

at a single ticket booth, customers arrive randomly at a rate of x per hour. the average line length is given by F(x)= x^2/400-20x Where 0<= x <20. To keep the wait in line reasonable, it is required that the average line length should not exceed 10 customers. Determine ...

*November 25, 2014 by wally*

**Physics ( optics)**

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 ...

*September 17, 2010 by Rudi*

**science**

Which statement below does not apply to the moon? A. Does not have moving plates or volcanoes. B. Rotates just once on its own axis in about 28 days C. Rotates once on its axis in about 24 hr. D. Atmosphere is too thin to destroy asteroids I think it is C but im not sure http...

*April 18, 2007 by Missy*

**physics**

A tennis ball is a hollow sphere with a thin wall. It is set rolling without slipping at 4.24 m/s on a horizontal section of a track. It rolls around the inside of a vertical circular loop 90.0 cm in diameter and finally leaves the track at a point 19.0 cm below the horizontal...

*March 2, 2010 by emath*

**mechanics of materials**

Select the correct answer.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 ...

*February 21, 2013 by dmkp*

**math**

I have 14 questions and I was wondering if someone could check my answers. This is a do or die situation. If I don't get an A, I may not get to graduate. I really appreciate you taking your time to double check theses for me. Thanks if you do. I know its a lot. They are all ...

*April 2, 2011 by Brittany*

**Iteration Control Structure**

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 ...

*January 16, 2007 by Martha*

**Algebra 1**

A design calls for a rectangular garden with an area of 180 square feet. If the length is to be 3 feet more than the width, set up an equation and solve that equation to find the dimensions of the garden. I drew a sketch and labeled the width "w" and the length "w+3" my ...

*May 6, 2009 by Meloney*

**physics**

A typical sugar cube has an edge length of 1.0 cm. If you had a cubical box that contained 1.7 mol of sugar cubes, what would its edge length be? (One mole = 6.02 x 1023 units.) and A severe thunderstorm dumped 2.6 in of rain in 30 min on a town of area 32 km2. What mass of ...

*January 26, 2011 by nick*

**Algebra**

Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight Canada Goose length: M 25-45 ...

*November 27, 2011 by Frank*

**Algebra**

Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight Canada Goose length: M 25-45 ...

*November 27, 2011 by Frank*

**Algebra**

Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight Canada Goose length: M 25-45 ...

*November 27, 2011 by Frank*

**Algebra**

Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight Canada Goose length: M 25-45 ...

*November 28, 2011 by Frank*

**earth**

if the tilt of the earth's axis was increased beyond 23.5 degrees, will it cause seasonal variation in the equator to decrease? if the earth's axis becomes perpendicular to the orbital plane between the earth and the sun will it increase the length of night, increase in the ...

*March 18, 2008 by claudia*

**physics**

A person holds a 1.56 baseball in his hand, a distance of 34.0 cm from the elbow joint, as shown in the figure(Figure 1) . The biceps, attached at a distance of 2.75 cm from the elbow, exerts an upward force on the forearm. Consider the forearm and hand to be a uniform rod ...

*October 25, 2012 by Aaron*

**Math**

A square and four congruent rectangles are arranged in a larger square. The smaller square and each of the rectangles have the same perimeter.Determine the ratio of the length of a side of the larger square to the length of side of the smaller square.

*May 30, 2011 by Eric*

**physics**

A plastic rod has been bent into a circle of radius R = 8.80 cm. It has a charge Q1 = +4.60 pC uniformly distributed along one-quarter of its circumference and a charge Q2 = -6Q1 uniformly distributed along the rest of the circumference. Take V = 0 at infinity. (a) What is the...

*April 4, 2013 by j*

**biology**

If I had an experiment where I was testing how the membrane permeability is affected by ethanol, and by doing this had to observe thin onion slides with different ethanol concentrations and had to count how many nuclei were seen through the microscope once being stained. My ...

*January 31, 2012 by anonymous*

**Math**

-Hey I know this is my fourth time posting this but, I have figured a lot on my own. But I have no idea what to do for the "Analyze it" questions. Semester A Unit 4 Lesson 5: Cool Crafts Portfolio Template Choose a room you would like to decorate: _My Bed ...

*November 3, 2015 by Mathbeep*

**MATH :|**

-Hey I know this is my fourth time posting this but, I have figured a lot on my own. But I have no idea what to do for the "Analyze it" questions. Semester A Unit 4 Lesson 5: Cool Crafts Portfolio Template Choose a room you would like to decorate: _My Bed ...

*November 3, 2015 by Mathbeep*

**Pre-Algebra**

If the perimeter of a rectangle is 38 ft and the width is 9 ft, find its length. [Hint: The perimeter of a rectangle is given by P = 2L + 2W.] I don't know why this is a problem for you. P = 38 and W = 9. Solve for L. You have only one unknown in the equation. If you don't ...

*July 16, 2006 by Tammy Evert*

**Physics**

A string on a musical instrument (1 m long) carries travelling waves at 100 m/s. What are the three lowest notes that this string can play (keeping the string at its full length)? You have the length. You can put one half wavelength on the string, one wavelength, or 3/2 ...

*November 11, 2006 by Allie*

**Math**

Postal regulations specify that a package sent by priority mail may have a combined length and girth of no more than 129 in. Find the dimensions of a cylindrical package with the greatest volume that may be sent by priority mail. Hint: The length plus the girth is 2πr + l...

*April 4, 2011 by Amber*

**physics**

In a lab, a student measures the unstretched length of a spring as 0.109 m. When a 131.4-g mass is hung from the spring, its length is 0.201 m. The mass-spring system is set into oscillatory motion, and the student observes that the amplitude of the oscillation decreases by ...

*February 21, 2012 by janny*

**physics**

3. In the figure, a runaway truck with failed brakes is moving downgrade at 107 km/h just before the driver steers the truck up a frictionless emergency escape ramp with an inclination of θ = 14°. The truck's mass is 1.4 × 104 kg. (a) What minimum length L must the ramp...

*April 7, 2013 by Samira*

**psychology**

Which one of the following statements describe the relationship between genes,chormosomes and DNA? A genes,the basic unit of heredity,are located on chromosomes,which consist of strands of DNA B genes are composed of chromosomes and Dna C chromosomes,tha basic unit of heredity...

*September 16, 2009 by 888*

**psychology**

Which one of the following statements describe the relationship between genes,chormosomes and DNA? A genes,the basic unit of heredity,are located on chromosomes,which consist of strands of DNA B genes are composed of chromosomes and Dna C chromosomes,tha basic unit of heredity...

*September 16, 2009 by VEDRANA*

**chemistry**

A volume of 115 mL 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 21.40 ∘C , what is the mass of the steel bar? Use the following values: specific heat of ...

*October 19, 2016 by myah*

**Physics**

A long jumper takes of at an angle of 20 degrees and a speed of 11.0 m/sec. The max height achieved is 0.722 meters an the max length is 7.94 meters. At what angle and speed would the jumper have to take off to get the same max length, but twice the max height?

*August 31, 2012 by Kim*

**Math**

Miguel wants to put a fountain in the center of the park.the fountain will be in a retangular shaped pool. The length of the pool is 25 feet. The width of tge pool will be 14 feet. What is the area and perimeter of the pool I know length tines width is area but do u use all 4 ...

*May 19, 2016 by Ashley martin*

**Math Scale Drawing**

The length of a classroom is 30 ft. What is the scale factor if the length of the classroom on the scale drawing is 3.6 inches?

*February 10, 2016 by Helen*

**math**

The length of a rectangle is 7 units and its width is 5 units. What is the approximate length of the diagonal of the rectangle? A. 4.9 units B. 6 units C. 8.6 units D. 9 units

*December 16, 2016 by tyler*

**yutfv**

A thin massless horizontal pipe rotates about a vertical axis with angular speed ω as shown in the figure. A small bug, located at a distance r from the axis, starts crawling inside the pipe at constant speed v (relative to the pipe). Because of the bug, the motor must ...

*June 17, 2013 by Anonymous*

**physics**

A thin, massless, horizontal pipe rotates about a vertical axis with angular speed ω as shown in the figure. A small bug, located at a distance r from the axis, starts crawling inside the pipe at constant speed v (relative to the pipe). Because of the bug, the motor must ...

*June 17, 2013 by g*

**chemistry**

Plastic articles can be chromium-plated by coating them with thin layer of graphite paste,placing them in a bath of aqueous chromium(III) sulphate and electroplating. a)Suggest a reason why the article is first coated with graphite. b)what substance could be used for the other...

*March 10, 2013 by harish*

**Algebra**

Need to get these checked-- 1. Find the length of the following segment created by these pairs of endpoints: (0,1), (6,6) sqrt of 61= 7.8 2. Find the length of the following segment created by these pairs of endpoints: (3,6), (2,1) sqrt of 26= 5.1 3. Find the length of the ...

*June 22, 2010 by mysterychicken*

**Psychology**

Which of the following statements describes the relationship between genes, chromosomes, and DNA? a. Genes, the basic unit of heredity, are located on chromosomes, which consist of strands of DNA b. Genes are composed of and DNA c. Chromosomes, the basic unit of heredity, ...

*October 3, 2011 by bj*

**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 times a person’s weight. According to one set of experiments, the average...

*November 11, 2013 by Kenzie*

**algebra**

a ladder is against a building. The distance from the bottom of the building to the ladder is 9 feet 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 2ft. less than the length of the ladder?

*May 24, 2010 by amanda*

**MUSIC**

for my music homework i have got these words Polyphonic homophonic thick texture thin texture which i need to match up with these sentences Single melodic line - i think this matches up with Polyphonic. a few parts spaced apart chordal parts that move together two or more ...

*May 1, 2010 by LOOBY*

**Math**

Chris cuts a 3 1/2 feet long board of wood. He cuts out 4 pieces that are each 2/3 foot long. Find the combined length of the 4 pieces? Find the length of the remIng board after chris gets his 4 pieces

*January 17, 2013 by Zach*

**Calculus**

I know how to do this problem, but I'm stuck at the arc length differential. Set up an integral for the arc length of the curve. (Do not evaluate the integral) x=y^2ln(y), 1<y<2 dx/dy = 2yln(y) + y ds= sqrt (1 + (2yln(y)+y)^2 so far I have sqrt (1 + 4y^2ln(y) + 2[2y^2ln(...

*February 28, 2013 by Angie*

**Pre-Algebra**

2 more problems that I'm stuck on, please help- 1.A square floor has an area of 32 m^2. Find the length of a side to the nearest tenth of a meter. 2.The height of a parallelogram is half the length of its base. the parallelogram has an area of 67 cm^2. Find the height to the ...

*June 5, 2009 by mysterychicken*

**Calculus III**

Compute the length of the curve r(t)=5ti+8tj+(t2+4)k over the interval 0≤t≤6 Hint: use the formula ∫t2+a2‾‾‾‾‾‾‾√dt=12tt2+a2‾‾‾‾‾‾‾√+12a2ln(t+t2+a2‾‾&#...

*October 22, 2015 by Steven*

**physics**

A dart leaves the barrel of a blowgun at a speed v. The length of the blowgun barrel is L. Assume that the acceleration of the dart in the barrel is uniform. If the darts exit speed is 17 m/s and the length of the blowgun is 1.10 m, find the time the dart is in the barrel.

*October 11, 2015 by nancy*

**physics**

a circular disc rotates on a thin air film with a period of 0.3s. its moment of inertia about its axis of rotation is 0.06kgm^2. a small mass is dropped onto th disc and rotates with it . the moment of inertia of the mass about the axis of rotation is 0.04kgm^2.determine the ...

*February 11, 2012 by ashely*

**Physics**

a circular disc rotates on a thin air film with a period of 0.3s. its moment of inertia about its axis of rotation is 0.06kgm^2. a small mass is dropped onto th disc and rotates with it . the moment of inertia of the mass about the axis of rotation is 0.04kgm^2.determine the ...

*January 9, 2013 by Suroj*

**Physics**

A 68-kg water skier is being pulled by a nylon (Young's modulus 3.7 x 109 N/m2) tow rope that is attached to a boat. The unstretched length of the rope is 15 m and its cross-section area is 1.8 x 10-5 m2. As the skier moves, a resistive force (due to the water) of magnitude ...

*November 23, 2013 by Samantha*

**Physics**

A 66-kg water skier is being pulled by a nylon (Young's modulus 3.7 x 109 N/m2) tow rope that is attached to a boat. The unstretched length of the rope is 20 m and its cross-section area is 2.8 x 10-5 m2. As the skier moves, a resistive force (due to the water) of magnitude ...

*March 23, 2016 by Jane*

**geometry**

Dru is challenged by her geometry 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 shadow. If dry is 5ft 6 in.tall and she estimates the ...

*January 30, 2014 by jan*

**Physics**

The electrons that produce the picture in a TV set are accelerated by a very large electric force as they pass through a small region in the neck of the picture tube. This region is 1 cm in length, and the electrons enter with a speed of 1 × 105 m/s and leave with a speed of ...

*September 29, 2014 by Jessy*

**math**

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 width of rectangle y.

*September 25, 2012 by nancy*

**Materials Science**

A 3-point bending test is performed on a simply supported beam of length L=4m and of rectangular cross-section, with width b and height h. For a central load of 10kN, draw the bending moment and shear force diagrams for the beam. Then answer the following questions about the ...

*October 17, 2014 by qwerty*

**College Math (Calculus)**

Suppose the length of a rectangular box, with lengths x,y,z are changing at the following rates dx/dt = 2 cm /sec dy/dt = -3 cm /sec dz/dt = 1 cm/ sec when x =4, y=3 z=2, Find i) Rate at which volume is changing wrt time, ii) Rate at which the diagonal length of the box is ...

*February 25, 2015 by Wboy*

**PLZ HELP MRS.SUE I NEED HELP TODAY**

A designer enlarged both the length and the width of a rectangular carpet by 50 percent. The new carpet was too large so the designer was asked to reduce its length and its width by 20 percent. By what percent was the area of the final carpet design greater than the area of ...

*May 20, 2016 by PLEASE HELP :)*

**math**

A truncated square pyramid (also known as a frustum) is an object obtained by cutting a square pyramid by a plane parallel to its base (as shown in the figure). For a truncated square pyramid it is known that the side length of the large base is 10 cm and the height (distance ...

*February 22, 2015 by ani*

**Organic Chem**

Q: Each of the solvent given should effectively separate one of the following mixtures by thin-layer chromatography. Match the appropriate solvent with the mixture that you would expect to separate well with that solvent. Select your solvent from the following. Hexane, ...

*March 7, 2009 by Scott*

**Organic Chemistry**

Q: Each of the solvent given should effectively separate one of the following mixtures by thin-layer chromatography. Match the appropriate solvent with the mixture that you would expect to separate well with that solvent. Select your solvent from the following. Hexane, ...

*March 7, 2009 by Scott*