Thursday

May 28, 2015

May 28, 2015

Number of results: 49,991

**College physics-oscillations**

A ball is attached by two spring as shown [vvvOvvv]. If the mass is displaced a distance â–³x BELOW the equilibrium position h (see figure A). Determine whether vertical SHM is possible for the system shown.If so, find the natural frequency. [Assume that the vertical extension...
*December 4, 2010 by Marco*

**Physics**

In the rope climb, a 68 athlete climbs a vertical distance of 9.0 in 13 . What minimum power output was used to accomplish this feat? In Watts
*October 17, 2010 by Eden*

**Physics**

In the rope climb, a 68 kg athlete climbs a vertical distance of 9.0 m in 13 s. What minimum power output was used to accomplish this feat? In Watts
*October 17, 2010 by Nikohl*

**Physics**

Given an angle of 30 degrees, find the minimum initial speed of a cannon ball that travels in a horizontal distance of 15000 mi.
*August 25, 2014 by Kadu*

**PHYSICS**

A body of mass 100.0g is attached to a hanging spring whose force constant is 10.0 kN/m. The body is lifted until the spring is in its unstretched state. The body is then released. Using the law of conservation of energy, calculate the speed of the body when it strikes a table...
*September 13, 2006 by Maggie*

**physics**

a cyclist start from rest and accelerate uniformly to achieve a velocity of 12m/sec in 5 sec.immediately he applied brake and come to rest in next 4 sec .calculate a)distance traveled during acceleration b)distance traveled during retardation. c)total displacement during whole...
*May 28, 2012 by parul*

**Genetics**

Hi, I'm just trying to learn gene mapping and I'm a bit confused as to why the answer this question is D. I just don't get it, and I'd really appreciate it if someone could help work it through so I'd understand how they got that answer to be wrong and the other one's to be ...
*November 29, 2008 by Katie*

**math**

2 hours after a given drug has been administered there is only 75% of it left in the body. a. What percentage of it leaves the body every hour (find the hourly decay rate)? b. What is the continuous decay rate? c. How long until 50% has left the body? d. How long until 99% of...
*November 21, 2011 by Lindsey*

**Physics ~ missed this lecture pls help**

A thin converging lens of focal length 9.82 cm forms an image of an object placed 18.5 cm from the lens. Find the image distance. Answer in units of cm. What is the magnification for an object distance of 18.5 cm? Find the location of the image for an object distance of 4.06 ...
*April 28, 2011 by cr*

**Math 11**

I need help on this math problem. The width of a certain painting is 5cm less than twice the length. The length of the diagonal distance across the painting is 107cm. Find the length and width. Round your answer to 2 decimal places. How should I set up for this problem? I was ...
*January 12, 2012 by Need Help*

**Physics**

Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, and the body can produce as much as 1.3 kg of sweat per hour. If sweating were the only heat dissipation mechanism, what would be ...
*December 2, 2011 by Allie*

**Calculus**

A rancher wants to build a rectangular pen with an area of 150 m2. 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 ...
*May 26, 2013 by Lily*

**Physics**

An asteriod is found a distance from the sun equal to 32 units times the earth's distance. What will be the length of time in years required for this asteriod to make one revolution around the sun?
*March 10, 2012 by Sam*

**Calculus**

A parcel delivery service will deliver a package only if the length plus girth (distance around) does not exceed 84 in. What are the radius, length and volume of the largest cylindrical package that may be sent using this service?
*August 27, 2011 by Amanda*

**Physics**

How much work is needed to lift a 3 kg mass a distance of 0.75 m?
*February 27, 2011 by Lesley*

**Physics **

If the work required to stretch a spring 4 feet beyond its natural length is 17 foot-pounds, how much work is needed to stretch it 14 inches beyond its natural length? Your answer must include the correct units. (You may enter lbf or lb*ft for ft-lb.)
*March 18, 2014 by Hao*

**5th grade Math **

A rectangle has a perimeter of 12 m. If each side is a whole number of meters, what are the possible dimensions for the length and width? List them and explain your answer.
*March 11, 2010 by Sammi*

**math**

A rectangle has a perimeter of 12m. if each side is a whole number of meters, what are the possible dimensions for the length and width? List them and please explain your answer.
*February 27, 2012 by shion*

**physicis**

A body of 8.10 kg mass makes an elastic collision with another body at rest and continues to move in the original direction, but with one-fourth of its original speed. What is the mass (in kilograms) of the struck body?
*April 24, 2013 by PCm*

**Science**

A body of mass 17.25kg rest on a smooth horizontal table. The coefficient of friction between the body and the table is 0.34. What is the horizontal frictional force that will make the body just slide.
*August 17, 2013 by Charity*

**Newtons Law of Cooling**

using Newton's Law of Cooling: At 10:30 am the medical examiner arrives at a crime scene where a dead body has been found. The temperature of the body is 80 degrees F and the thermostat for the room in which the body was found is set at 68 degrees F. One hour later the ...
*September 4, 2014 by Tracy*

**Algebra**

A motorist was to travel from town A to town B, a distance of 80 miles. He traveled the first 24 minutes at a certain rate; traffic then increased and for the next 6 minutes he averaged 10 miles per hour less than his original speed; then traffic eased up and he traveled the ...
*October 24, 2013 by Jane*

**Physics**

A drop of water on a countertop reflects light from a flower held 2.8 cm directly above it. The flower's diameter is 1.7 cm, and the diameter of the flower's image is 0.17 cm. What is the focal length of the water drop, assuming that it may be treated as a convex spherical ...
*November 17, 2011 by Kristi*

**statistics**

Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers). Is a body temperature of 99.00 °F unusual? Why or why not? Fifty adults are ...
*April 2, 2010 by anonymous*

**math**

1. Two children balance a see-saw in horizontal equilibrium. One weighs 80 lb. and the other weighs 60 lb. and is sitting 4ft. from the fulcrum. Find the force the fulcrum applies to the beam and the distance to the fulcrum to the 80 lb. child. (Neglect the mass of the see-saw)
*October 29, 2011 by gaurav*

**math**

1. Two children balance a see-saw in horizontal equilibrium. One weighs 80 lb. and the other weighs 60 lb. and is sitting 4ft. from the fulcrum. Find the force the fulcrum applies to the beam and the distance to the fulcrum to the 80 lb. child. (Neglect the mass of the see-saw)
*October 29, 2011 by gaurav*

**math**

1. Two children balance a see-saw in horizontal equilibrium. One weighs 80 lb. and the other weighs 60 lb. and is sitting 4ft. from the fulcrum. Find the force the fulcrum applies to the beam and the distance to the fulcrum to the 80 lb. child. (Neglect the mass of the see-saw)
*October 29, 2011 by rahul*

**Math**

A community garden is sectioned off into 12 congruent individual plots with rope as shown in the diagram. Find the total length of rope used. Then find the total length of rope needed if the garden is sectioned off into six congruent rectangles. width-4yd length-3rd
*April 20, 2011 by Matty*

**Gen Chem**

Barium has a radius of 224 pm and crystallizes in a body-centered cubic structure. What is the edge length of the unit cell?
*April 19, 2010 by gagaga*

**Physics - Optics**

A photographic slide is to the left of a lens. The lens projects an image of the slide onto a wall which is a distance of 5.94 m to the right of the slide. The image is larger than the size of the slide by a factor of 82.0. How far is the slide from the lens? Is the image ...
*July 17, 2007 by Tifani*

**Physic**

A person weighs 872 N in air and has a body fat percentage of 20.7%. a. What is the overall density of this person's body? b. What is the volume of this person's body? c. Find the apparent weight of this person when completely submerged in water.
*April 18, 2010 by Ann*

**Minimum Concentrations - Urgent help!**

What is the minimum concentration? Determine the minimum concentration of the precipitating agent on the right to cause precipitation of the cation from the solution on the left. 8.0 x 10^-2 CaI2, K2SO4 1.5 x 10^-3 AgNO3, RbCl The Ksp values for both are Ksp = 2.4*10-6 for ...
*March 22, 2013 by Amy*

**English**

Hello. I will really appreciate some help. 1)Would you use the article in the sentence "The UN called on Egypt to end (the) violence and bloodshed"? 2)Is it correct to say: a)the British newspaper Daily Mirror; or is it b)the British newspaper The Daily Mirror? 3)Which ...
*December 4, 2011 by Ilma*

**Math 207**

If the work required to stretch a spring 4 feet beyond its natural length is 17 foot-pounds, how much work is needed to stretch it 35 inches beyond its natural length? Your answer must include the correct units. (You may enter lbf or lb*ft for ft-lb.)
*May 2, 2012 by Anonymous*

**Physics**

Body A has twice the mass and three times the specific heat of body B. They are supplied with equal amounts of heat. Body A experiences a temperature change ΔT. What change in temperature is experienced by body B? Question 2 options: A) ΔT B) 3ΔT/2 C) 2ΔT/...
*August 15, 2011 by Skylar*

**algebra1/McDougal Littell**

a page of pictures for a yearbook is 8 1/2 inches by 11 inches. The space between the pictures is 3/16 inch. How high can each picture be to fit seven down the length of the page? since the the length of the page is 11 inches, and there has to be seven pictures down the length...
*November 16, 2006 by derrick*

**English**

I have a few doubts regarding the following questions. Can you help me, please? 1)Provide a definition of "poetry" including its most important elements. 2)Briefly refer to the description of the mirror as provided by Sylvia Plath in her poem "Mirror"? What does the mirror ...
*November 14, 2010 by Franco*

**English**

1. He killed him. 2. He killed himself. (Can we use both sentences. I think they have different meaning.) 3. You should take care of yourself. 4. You shoud take care of you. (Are both OK? Is #4 wrong?) 5. He looked at himself in the mirror. 6. He looked at him in the mirror. (...
*December 7, 2009 by rfvv*

**Physics**

Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at that point, the tugs on the spaceship from each celestial body exactly cancel, leaving the craft literally weightless. Take the distance between ...
*December 16, 2007 by Lindsay*

**Physics**

The boom weighs 2450 and is attached to a friction less pivot at its lower end. It is not uniform; the distance of its center of gravity from the pivot is 39.0 of its length. What is the tension in the guy wire? Link to picture of problem which is needed to solve the problem...
*April 27, 2013 by John*

**Physics**

The boom weighs 2450 and is attached to a friction less pivot at its lower end. It is not uniform; the distance of its center of gravity from the pivot is 39.0% of its length. What is the tension in the guy wire? Link to picture of problem which is needed to solve the problem...
*April 28, 2013 by John*

**Math**

Does -3/4 belong in the group, integers and rational numbers. in order it goes:Natural #s-1,2,3,4... Whole #s-0,1,2,3,4... Integers-whole #s & opposites(negatives) Rational #s-numbers written in fractions or decimals Please read: (Broken Link Removed) -3/4 is a rational number...
*December 14, 2006 by Katie*

**chemistry**

How would I find amount of P in a 100 liter solution. The liter of solution contains nitric and sulfurous acid and possibly a dissolved body... the body weighs 70 kg and there are 6.3 ppt of phosphorous in a human body.
*October 27, 2013 by Anonymous*

**please help geometry**

you need to find the length of a broken automitive belt. the belt ran around 2 pulleys whose centers were 11 in apart. one of the pulleys is 4" dia. and the other is 6" dia. what is the totoal length of the belt needed to connect thr pulleys?
*April 25, 2013 by ALICE*

**maths**

1) The 17th hole at the famous st andrews golf course is 420 m in length.How long will it appear on a plan of the course of scale 1:8000? 2) On a map of scale 1:15000,the distance between the buckingham palace and brixton underground station is 31.4cm. what is the actual ...
*February 27, 2011 by sweety*

**Chem**

Based on the number of atoms per unit cell and the mass of the atom, the mass of the unit cell can be calculated. The density of the unit cell and the material as a whole can be determined from the mass and the volume of the unit cell as. D= M/V The usual units of density are ...
*January 16, 2009 by Juliee*

**Accounting: Lock Box System**

What minimum reduction in the time to collect and process each check is needed to justify use of the lock box system? If 400 payments per day, 2,000 average payment size, Bank charge $.40 per check and interest rate is .015 per day. The answer depends on the value of time. For...
*October 10, 2006 by Lola*

**math (distance problem)**

The points A, B, C, D, and E are located on a straight line in order. The distance from A to E is 20cm. The distance from A to D is 15cm. The distance from B to E is 10cm. C is halfway between B and D. Find the distance from A to C.: * 2.5 cm 5 cm 10 cm 12.5 cm
*September 22, 2007 by anonymous*

**physics**

A navy jet with a weight of 231 kN requires an airspeed of 85 m/s for liftoff. The engine develops a maximum force of 107 kN, but that is insufficient for reaching takeoff speed in the 90 m runway available on an aircraft carrier. What minimum force (assumed constant) is ...
*November 26, 2006 by Dee*

**Management**

Why is management necessary? What are the advantages and disadvantages of delegation? Just as the brain coordinates the functions of the body, effective management is needed to coordinate the functions of a business to make it productive. However, since this is not my area of ...
*July 6, 2006 by Laverne*

**Math**

1. How many bricks each measuring 25cm×11.25cm×6cm, will be needed to build a wall of 8m×6m×22.5? 2. what decimal of an hour is a second? 3. without a calculator, 0.04×0.0162 is equal to...... 3. (0.04)^ -1.5 4. if m and n are whole numbers such that m^n=121, the value of (m-1...
*April 22, 2015 by Bright*

**mechanics of machines**

A body of weight 500N is lying on a rough plane inclined at angle 3.2 with the horizontal. It is supported by an effort p, parallel to the plane. Determine the minimum and maximum value of P, for which the equilibrium can exist if the angle of friction is 0.342
*April 10, 2012 by mustapha*

**Polytechnic soko nigeria**

A body of weight 500N is liying on a rough plane inclined at angle 25 with the horizontal, it ir supported.by an effort P, parallel to the plane.determine the minimum and maximum value of P, for the equilibriun can exist if the angle of friction is 20
*April 12, 2012 by Musty*

**Polytechnic soko nigeria**

A body of weight 500N is liying on a rough plane inclined at angle 25 with the horizontal, it ir supported.by an effort P, parallel to the plane.determine the minimum and maximum value of P, for the equilibriun can exist if the angle of friction is 20
*April 12, 2012 by Musty*

**chem**

According to the Bohr theory of the hydrogen atom, what is the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state?
*September 5, 2010 by ryan*

**Physics**

A beam, B1, of mass M1 = 0.6887 kg and length L1=1 m is pivoted about its lowest point at P1. A second beam, B2, of mass M2=0.200 kg and length L2=0.200m is suspended (pivoted) from B1 at a point P2, which is a horizontal distance d=0.550, from P1. To keep the system at ...
*May 2, 2011 by Catherine*

**statistics**

The scores on a test for a very large class is normally distributed with mean 64 points and standard deviation 6 points. The department decides to award A to the highest 5% scores. What is the minimum score to receive an A for the course? Round your answer (down) to nearest ...
*July 11, 2012 by Anonymous*

**math**

How many 1-inch cubes are needed to create a cube with a side length of 7 inches?
*March 9, 2015 by Stevenrocks7584*

**General Physics**

A block sliding on a horizontal surface has an initial speed of 0.5 m/s. The block travels a distance of 1 m as it slows to a stop. What distance would the block have traveled if its initial speed had been 1 m/s? 1. 2 m 2. 1 m 3. more information is needed to answer the ...
*July 26, 2013 by Charles*

**English**

Which of the following sentences is in the passive voice? A. I just don't see the point. B. I want my MTV. C. A whole case of beer gets drunk every Satyrday night. D. Please don't tell me I missed it. I think its D
*April 14, 2011 by robin*

**college chemistry**

According to the Bohr theory of the hydrogen atom, what is the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state?
*September 5, 2010 by ryan*

**Physics**

I still cannot solve this problem: Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at that point, the tugs on the spaceship from each celestial body exactly cancel, leaving the craft literally ...
*December 17, 2007 by Lindsay*

**French - SraJMcGin/Frenchy**

Aimes-vous peinture " Girl before a Mirror - Picasso? Pourquoi ou pourquoi pas? English: [Yes I like the painting "Girl before a Mirror by Picasso because it is really colorful, and the reflection of the girl is something totally different, its strange but cool at the same ...
*April 1, 2011 by Karley*

**English**

1. I want to see the movie. 2. I want to see the film. 3. I want to see the motion picture. 4. I want to see the animated picture. ------------------- Ae they all the same in meaning? What is the difference among them?
*December 23, 2014 by rfvv*

**Calc**

A body of an unknown temperature was placed in a room that was held at 30°F. After 10 minutes, the body's temperature was 0°F, and 20 minutes after the body was placed in the room the body's temperature was 15°F. Estimate the body's initial temperature. Thank you!!
*January 6, 2011 by Erica*

**physics**

A uniform plank of length 5.6 m and weight 203 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 440 N walk on the overhanging part of the plank before it just begins to ...
*June 1, 2007 by meredith*

**physics**

a spacecraft has an acceleration of magnitudes 5.0g what distance is needed for it to attach a velocity of 10 km/s?
*August 8, 2010 by jether*

**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 ...
*September 12, 2010 by Nina*

**physical science **

Which of the following four bodies has the greatest kinetic energy? a. A body of mass 1 kg moving with speed 1000 m/s. b. A body of mass 2 kg moving with speed 50 m/s c. A body of mass 3 kg moving with speed 50 m/s d. A body of mass 50 kg moving with speed 2 m/s e. A body of ...
*December 15, 2011 by Fonda*

**Statistics**

In recording the self-reported lengths of a particular body part in a sample of male undergraduates, the largest was claimed to be 20 cm—a full 3 standard deviations from the mean length for the sample. The shortest alleged length was only 10 cm, which was equivalent to ...
*November 3, 2012 by susan*

**Physics**

A youngster shoots a bottle cap up a 15.0° inclined board at 1.92 m/s. The cap slides in a straight line, slowing to 0.95 m/s after traveling some distance. If the coefficient of kinetic friction is 0.35, find that distance. I still don't quite understand this one. How do I ...
*December 5, 2007 by Lindsay*

**math**

The legs of a right triangle are 13 inches and 9 inches. Find the length of the hypotenus to the nearest whole number.
*December 15, 2009 by jw*

**10th grade**

Triangle ABC is an equilateral triangle.AD=10 What is the length of CD? Give your answer to the nearest whole number.
*May 27, 2010 by it's me*

**Perimeter**

A rectangle has a perimeter of 12m. If each side is a whole number of meters, what are the possible dimensions for the length and width?
*February 8, 2012 by Jackie*

**maths**

a triangle has sides of length 7 cm ,15cm and x cm. If x is an interger find (i) the minimum value of x (ii) the maximum value of x
*November 2, 2013 by Virginia*

**5th grade math**

The moon is about 240.000 miles from Earth. What is this distance written as a whole number multiplied by the power of ten?
*September 13, 2012 by Jordan*

**medical terminology**

Seven Organizational Approaches A. Use the matrix below to describe each approach to organizing information about the body. Discuss how each approach can be used. Approach Describe the approach How might the approach be used? Body planes and directions Body cavities Quadrant ...
*September 8, 2008 by nicole*

**science**

Can anyone help me out fill in the blanks. Here are the words that will complete the whole thing: -birth -body -control -development -eggs -endocrine glands -growth -hormones -milk -production -sperm uterus contractions The pituitary gland secretes______ which____ other____ ...
*October 24, 2014 by lyka*

**Physics**

You are trying to photograph a bird sitting on a tree branch, but a tall hedge is blocking your view. However, as the drawing shows, a plane mirror reflects light from the bird into your camera. For what distance must you set the focus of the camera lens in order to snap a ...
*April 10, 2013 by Tim*

**algebra**

The drama club is building a backdrop using arches whose shape can be represented by the function f(x)=-x^2+2x+8, where x is the length in feet. The area under each arch is to be covered with fabric. -What is the length of the segment along the floor of each arch? -What is the...
*May 8, 2008 by astrid*

**Algebra 2**

Can somebody help with these. Simplify (be sure to rationalize all denominators) 11. 3/[SQRT(5) - 2] and this.. Note: I only need help on the b part of the question.. 15. Assume that a surveyor stands at the top of a mountain that is “h” feet tall. If the distance (in feet) ...
*March 12, 2009 by Mike*

**Precalc-Max and Min word problem w/ calculator**

A cylindrical can (w/lid) needs to be construced to hold 40 cbic inches. Find the dimentions of the can so that the total amout of material needed is a minimum i dont know how to do this!! please help- do you know any sites that reteach this?
*October 15, 2008 by Adam*

**Chemistry**

Please help me with this question from my homework package What is the minimum number of photons with wavelength 645nm needed to prepare 135 grams of glucose? When the thermochemical equation is C6H12O6(s)+ 6O2(g)--> 6CO2(g)+ 6H2O(g) Reaction is -2539.01 Kj/mol
*February 10, 2009 by Shylo*

**Calculus**

Find the absolute maximum and absolute minimum of f on the interval (-4, -1]: f(x)=(x^3+8x^2+19x+12)/(x+4) A. Maximum: None; Minimum: (-2, -1) B. Maximum: (-4, 3); Minimum (-1, 0) C. Maximum: (-4, 3); Minimum: (-2, -1) D. Maximum: None; Minimum: (-1, 0) E. none of these
*January 11, 2015 by Anonymous*

**Math**

Help to solve problem A cube has an edge length of d. Point C is at the center of the top face of the cube. express the length of the path from vertez to vertex B to the center point C in terms of d. Use the idea that the square root of (N X N). Estimate any numerical square ...
*May 12, 2011 by Ale*

**MATH**

A guy-wire is attached to a tree to help it grow straight. The length of the wire is 2 feet greater than the distance from the base of the tree to the stake. Find the length of wire. x + 2 x + 1 x how would i set this one up?
*September 30, 2008 by jennifer*

**math**

the americans with disabilities act requires wheelchair ramps no greater than 1 over 12 or 1/12 .whta is the minimum horizontal length 2-foot-high ramp can have?
*May 20, 2013 by mary*

**physics**

A particular jet aircraft must reach a speed of 43 m/s in order to take-off. If the acceleration of the plane is 1329 m/s2, the minimum length of the runway is Answermeters
*January 29, 2015 by diana*

**physics**

A body moves along a straight line from rest with an acceleration of 2m/s². Calculate the time taken by it to cover a distance of 100m.
*July 14, 2012 by Ragheeba*

**Science**

A body moving with an initial velocity of 10m/s has a uniform acceleration of 2m/s.Find distance travelled in the 8th second of its motion?
*September 12, 2012 by Sreehari*

**Science**

a body rolled on a surface with speed of 10m/s comes to rest after covering distance of 50 m find cofficient of friction
*September 12, 2014 by Sudhanshu*

**physics**

please check these for me: What is the wavelength of microwaves of 3.0*10^9 Hz frequency? a. 0.050m b. 0.060m c. 0.10 m d. 0.20 m C If a light ray strikes a flat mirror at an angle of 30deg from the normal, the ray will be reflected at an angle of a. 30deg from the mirror's ...
*March 12, 2009 by physics*

**Algebra 2**

At 1:00 a.m., a homicide detective found the reading of a corpse's body temperature to be 88 degrees Fahrenheit. One hour later, the body temperature is 83 degrees Fahrenheit. If the body has been in a 74 degree Fahrenheit room since its death, what is the time of death ...
*July 10, 2013 by Anonymous*

**Math.....**

At 1:00 a.m., a homicide detective found the reading of a corpse's body temperature to be 88 degrees Fahrenheit. One hour later, the body temperature is 83 degrees Fahrenheit. If the body has been in a 74 degree Fahrenheit room since its death, what is the time of death ...
*July 16, 2013 by Anonymous*

**physics**

A body at rest is given an initial uniform acceleration of 8m/s2 for 30s after which the acceleration is reduced to 5m/s2 for the next twenty seconds. The body maintains the speed attained for 60s, after which it is brought to rest in 20s. 1. Draw the velocity time graph of ...
*August 28, 2011 by jane*

**calculus**

Find the length and width of a rectangle that has the given area and a minimum perimeter. Area: 8A square centimeters
*October 26, 2014 by liz*

**Physics**

An engineer needs to determine the distance across a rive whose banks are approx. parallel. Standing on one side of the bank, the engineer can see the other side. The engineer only has a 30 foot measuring tape ( which is shorter than the distance from one bank to the other) ...
*September 29, 2011 by Janie*

**Physics**

The femur of a human leg (mass 10 kg, length 0.9 m) is in traction, as shown in the figure below. The center of gravity of the leg is one-third of the distance from the pelvis to the bottom of the foot. Two objects, with masses m1 and m2, are hung using pulleys to provide ...
*July 15, 2013 by Jason *

**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*

**math**

how many different rectanagles exist which have whole numbers as the length and width,and also have an area of 36sq.cm?
*February 1, 2011 by cindy*