Monday

July 28, 2014

July 28, 2014

Number of results: 30,606

**algebra**

A plumber needs 4 sections of pipe 2and 7/8 feet long. Can this be cut from a 12 ft. section? If so, how much pipe will be left over? If not, why not? I came up with yes, you will use 11 1/8th amount and have a section of 1 and 1/8th left. Is this correct?
*May 26, 2010 by anonymous*

**physics**

Calculate the water pressure at the bottom of the 50-m {\rm m}-high water tower shown in the photo. Express your answer to two significant figures and include the appropriate units
*April 3, 2014 by Anonymous*

**Physics**

Use conservation of energy to determine the angular speed of the spool shown in Figure P8.36 after the 3.00 kg bucket has fallen 3.20 m, starting from rest. The light string attached to the bucket is wrapped around the spool and does not slip as it unwinds. The Figure shows ...
*October 26, 2011 by Nicole*

**phisecs**

water is moving with a speed of 5 m/s through a pip with a cross-sectional area of 4cm^2 . the water gradual descends 10 m as the pipe cross-sectional area increases 8cm^2 . if the pressure at the upper level is 1.5*10^5 , the pressure at the lower level is ?
*April 22, 2014 by w*

**roosevelt university**

Preston Corporation is evaluating its potential investment in a $225,660 piece of equipment with a three-year life and no salvage value. The company anticipates that pre-tax cash flows in each of the three years will equal to 22%, 44%, and 66%, respectively, of the investment’...
*December 29, 2011 by Anonymous*

**math**

which three-dimensional figure is shown below? the shape is cylinder
*December 14, 2009 by sara*

**geometry**

triangular pyramid with base vertices C, A, E and B, D, and F How many planes are shown in the figure?
*October 24, 2011 by alex*

**Physica**

In the figure shown ,f =40 N (angle force is 40 ) and m=2.0 kg . the magnitude of acceleration of the block is;
*July 15, 2012 by Q10*

**Physica**

In the figure shown ,f =40 N (angle force is 40 ) and m=2.0 kg . the magnitude of acceleration of the block is;
*July 15, 2012 by 10Q*

**Physica**

In the figure shown ,f =40 N (angle force is 40 ) and m=2.0 kg . the magnitude of acceleration of the block is;
*July 15, 2012 by 1010*

**Intergrated physics and chemistry**

A 52.0-kilogram skateboarder does a trick on a half-pipe. During the trick, he reaches a speed of 8.90 m/s. The radius of the half-pipe ramp is 3.00 meters. What is the minimum centripetal force necessary to keep the skater on the ramp?
*January 26, 2012 by Micah*

**Biology**

14. The layer of skin that contains nerves and blood vessels is the _________ 15. ________ digestion occurs in the small intestine through the action of enzymes. 16. Urea, excess water, and other waste materials are eliminated in a water fluid called ______________. 17. ...
*May 22, 2014 by Princess Anna*

**Physics**

Block A and Block B in the figure below are connected by a string of negligible mass. There is a force on A with a magnitude of FA=20N and a force on B with a magnitude FB=34N in the directions shown in the figure. What is the tension in the string?
*October 14, 2012 by Sam*

**Physics**

What are the first, second, and third frequencies audible from a 20 cm long organ pipe when (A) only one end is open and when (B) both ends are open. The speed of sound through the air inside the organ pipe is 343m/s. (Hint: if a harmonic does not exist, it would not be heard.)
*July 10, 2012 by Kelsey*

**physics**

What are the first, second, and third frequencies audible from a 20 cm long organ pipe when (A) only one end is open and when (B) both ends are open. The speed of sound through the air inside the organ pipe is 343m/s. (Hint: if a harmonic does not exist, it would not be heard.)
*March 28, 2013 by Help*

**physics**

Calculate the mass needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 14.0 , and its CG is 34.0 from the hip joint; the sling is 81.5 from the hip joint.
*March 22, 2013 by Megan*

**phy**

A marble slides without friction in a vertical plane around the inside of a smooth, 21 cm-diameter horizontal pipe. The marble's speed at the bottom is 4.5 m/s this is fast enough so that the marble makes a complete loop, never losing contact with the pipe.What is its speed at...
*March 23, 2010 by Naso*

**physics**

A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 29.0 m. Next, the student stands at the edge of the pool and uses a ...
*August 25, 2011 by marie*

**physics**

A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 39.0 m. Next, the student stands at the edge of the pool and uses a ...
*September 14, 2012 by kim*

**college**

A tank of water 3 meters deep sits on a table 1 meter tall. A hole is located 2 meters from the bottom of the tank. Water flows out of the hole and strikes the ground. Where does it strike the ground? Assume incompressible, non viscous flow.
*December 6, 2010 by Jib*

**physics**

A tank of water 3 meters deep sits on a table 1 meter tall. A hole is located 2 meters from the bottom of the tank. Water flows out of the hole and strikes the ground. Where does it strike the ground? Assume incompressible, non viscous flow.
*December 8, 2010 by olu*

**physics**

Dispersion in a window pane. In the figure on the left, a beam of white light is incident at angle θ = 51° on a common window pane (shown in cross section). For the pane's type of glass, the index of refraction for visible light ranges from 1.528 at the blue end of the ...
*April 17, 2011 by Jenna*

**Ap Physics**

Water skiers often ride to one side of the center line of a boat, as shown in the figure . In this case, the ski boat is traveling at 15 (m/s} and the tension in the rope is 80 N. If the boat does 3600 J of work on the skier in 51.3 m, what is the angle \theta between the tow ...
*October 2, 2009 by Brena*

**please help me paraphrase**

"The Antartic is the vast source of cold on our planet, just as the sun is the source of our heat, and it exerts tremendous control on our climate,"[Jacques] Cousteau tole the camera. "The cold ocean water around Antartica flows north to mix with warmer water from the tropics...
*March 27, 2008 by Ayla*

**Physics**

Leg traction is applied to a patient's leg as shown in the figure below. If the physician has requested a 57 N force to be applied to the leg, and the angle is θ = 60o , what mass m must be used for the object hanging from the massless cable? So < represents angle ...
*October 14, 2009 by Sam*

**Financial Analysis - free cash flows**

b. Do negative values of free cash flow in way alter or invalidate the notion that a company's fair market value equals the present value of its free cash flows discounted at the company’s weighted average cost of capital? Suppose a company's free cash flows were expected to ...
*March 1, 2007 by Tia*

**physical**

You are playing a note that has a fundamental frequency of 466.16 Hz on a guitar string of length 59.9 cm. At the same time, your friend plays a fundamental note on an open organ pipe, and 4.0 beats per seconds are heard. The mass per unit length of the string is 1.85 g/m. ...
*July 16, 2012 by itufizik*

**Science**

I not sure what formula to use for KE or how to find the mass for the equation. Water is flowing through a 2-inch diameter pipe with a velocity of 3 ft/s. Part A What is the kinetic energy of the water in (ft)(lbf)/(lbm)? (lbf) pound force (lbm) pound mass Part B What is the ...
*August 25, 2012 by Angel *

**math**

Water is flowing at a rate of 10 m3/s into the cylindrical tank shown below. a) Find the volume V of the water as a function of the water level h. b) Find h as a function of the time t during which water has been flowing into the tank. height of cylinder: 80m height of water...
*July 18, 2011 by lou*

**AP Physics B**

Through a pipe of diameter 15.5 cm , water is pumped from the Colorado River up to Grand Canyon Village, on the rim of the canyon. The river is at 564 m elevation and the village is at 2096 m . At what minimum pressure must the water be pumped to arrive at the village? The ...
*January 23, 2013 by Steph*

**intermediate Algebra**

A sink can be filled by a pipe in 2 minutes but it takes 4 minutes to drain a full sink. if both the pipe and the drain are open, how long will it take to fill the sink?
*July 17, 2014 by Casandra*

**Math**

A customer want to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee. The teepee is to be 12ft. accross and 8ft tall. How long should the pieces of PVC plumbing pipe be?
*October 5, 2009 by Rmz*

**Urgent-Chemistry Help**

I need help with the heat effects and calorimetry worksheet. Please explain how to solve it! Thank you so much! A metal sample weighing 45.2g and at a temperature of 100.0 C was placed in 38.6g of water in a calorimeter at 25.6 C. At equilibrium the temperature of the water ...
*December 4, 2006 by Tiffany*

**physics**

does current flows from high potential to low potential since it flows from positive terminal to negative terminal
*August 25, 2010 by blasting*

**science**

1. The surface tension in a cup of water is caused by _____. (1 point)attractive forces between the water and its container attractive forces between water molecules adhesive forces between water molecules adhesive forces between the water and its container 2. Which of these ...
*April 10, 2012 by NIKE*

**Physics - Bernouli **

Water flows with constant speed through a garden hose that goes up a step 20.0 cm high. 1. If the water pressure is 143 kPa at the bottom of the step, what is its pressure at the top of the step? Now suppose the cross sectional area of the hose at the top of the step is ...
*November 14, 2012 by Chong*

**geometry**

Calculate the volume of the figure shown. a = 8 and b = 12. Use 3.14 for pi and round answer to the nearest tenth
*March 28, 2011 by BreAnna*

**physics**

5. What is the electric potential at the center of the square shown in the figure below? Assume that q1 = 1 x 10-8 C, q2 = -2 x 10-8 C, q3 = 3 x 10-8 C, q4 = 2 x 10-8 C and d = 1 meter.
*March 14, 2011 by ike*

**physics**

What is the electric potential at the center of the square shown in the figure below? Assume that q1 = 1 x 10-8 C, q2 = -2 x 10-8 C, q3 = 3 x 10-8 C, q4 = 2 x 10-8 C and d = 1 meter.
*March 15, 2011 by ikemaze*

**physics**

Rank, from smallest to largest, the pressures in the tank of motionless fluid shown in the figure.
*November 29, 2012 by Anonymous*

**math(significant figures)**

A pipe is measured once with a steel tape with markings every .1mm.The two ends of the pipe line up with the 0 and 40-m marks onthe tape. How should this datum be recorded using theappropriate number of significant figures? exolain how you figured it out
*February 1, 2012 by lou*

**algebra 2**

Pipes A and B can fill a storage tank in 8 hours and 12 hours, respectively. With the tank empty, pipe A was turned on at noon, and then pipe B was turned on at 1:30 P.M. At what time was the tank full?
*June 22, 2010 by Derron*

**Math**

A sink can be filled by a pipe in 6 minutes but it takes 12 minutes to drain a full sink. If both the pipe and the drain are open, how long will it take to fill the sink?
*November 6, 2013 by Wendy*

**science**

If air at 30 degree c Dry Bulb temp and water vapour content(Mw)=0.015kg/kg flows over a basin containing water at 10 degree C. a) what will happen to the air temp? b) what will happen to the moisture content in the air? c) what will happen to the enthalpy of the air water ...
*February 11, 2011 by cris*

**physics**

If for the pipe carrying water in a building, h = 220 meters, v_1 = 3.8 m/s, and the cross-sectional area at 1 is twice that at 2. What must P_1 be in order that P_2 = 135000 Pa? P_1 =
*April 7, 2014 by jooey*

**financial management**

Given below are the cash flows of a project. Find out the net present value of the project. Cost of capital is 18% and initial investment is Rs. 2,00,000. Year Cash Flows (lakhs) 1. 40 2. 45 3. 60 4. 60 5. 75
*January 9, 2013 by anita*

**i need help i couldnt figure this out...**

A block of mass m = 3 kg is attached to a spring (k = 35 N/m) by a rope that hangs over a pulley of mass M = 6 kg and radius R = 6 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
*April 2, 2011 by samJoint*

**physics**

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.26 105 Pa and the speed is 0.029 m/s. What is the pressure at the narrow end of the segment? Pa Please help!
*April 9, 2012 by Malika*

**Physics**

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.34 105 Pa and the speed is 0.038 m/s. What is the pressure at the narrow end of the segment?
*November 7, 2007 by Dante*

**math**

what is the weight of a ten foot length of steel pipe? the inside diameter of the pipe is 3/4 of an inch, and the outside diameter i one inch. steel weighs 490lbs. per cubic foot.
*June 9, 2010 by billy bob*

**math**

what is the weight of a ten foot length of steel pipe? the inside diameter of the pipe is 3/4 of an inch, and the outside diameter i one inch. steel weighs 490lbs. per cubic foot.
*June 9, 2010 by jean*

**Engineering**

Determine the minimimum depth of a water reservoir that will provide a flow rate of 1200 gpm in a 4 inch diameter horizontal pipe that opens to the atmosphere You ought to consider Bernoulli's equation for this, it is in your text. You can model it as this: A drop of water at ...
*September 10, 2006 by matt*

**physic angular momentum and torque**

Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 15.5kg , and its CG is 35.5cm from the hip joint; the sling is 76.5cm from the hip joint.
*March 29, 2014 by Jenna*

**Physics**

2. A pool has an area A = 50 m2 and depth h = 2.5 m. The pool is filled with water to the maximum height. An electrical pump is used to empty the pool. There are two pipes coming out the pump: one is submerged into water has a radius r1 = 4 cm the other has a radius r2 = 2.5 ...
*April 13, 2012 by Sean*

**geometry **

Can some one please help me figure the angles out? sorry I can't copy and paste the figures... The 17in x 17in square below is given. We have chosen 4 points M, N, P, and Q one on each of its sides as shown in the figure and joint them to obtain a new four sided figure in red...
*September 13, 2009 by Anonymous*

**science**

If the two ponds were perennial (i.e., year-round) ponds, because of intersecting the water table, how would the presence or absence of water in the other depressions differ from that which is shown?
*June 17, 2013 by Lola*

**Physics please help?????**

Two small spaceships, each with mass m = 2000 kg, are in the circular Earth orbit of the figure, at an altitude h of 450 km. Igor, the commander of one of the ships, arrives at any fixed point in the orbit 90.0 s ahead of Picard, the commander of the other ship. At point P in ...
*May 13, 2014 by Janis*

**Physic **

Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 15.5kg , and its CG is 35.5cm from the hip joint; the sling is 76.5cm from the hip joint.
*March 29, 2014 by Charles*

**science-physics **

a boat travels in still water at 2m/s. It is rowed across a river that flows at 1m/s. Determine the resultant velocity of the boat
*February 14, 2012 by levi*

**physics**

hey, i was wondering if someone could explain and help me with this problems. please and thank you! A person holds an object of mass m = 4 kg on the palm of the hand with the arm stretched as shown in the attached figure. Use the torque equilibrium equation to determine the ...
*November 9, 2010 by daniel*

**physics**

The flow rate of a liquid through a 2.0cm radius pipe is 0.0080 m^3/s. the average fluid in the pipe is? i know that Av=volume flow rate for this problem the flow rate is 0.008m^3/s. Do i divide by the radius^2 to get velocity or is there someother equation im supposed to be ...
*November 11, 2007 by BrOwN GuRL*

**MATH**

An inlet pipe can fill an empty pool in 3 hours. Another pipe can fill the same pool in 4 hours. How long will it take to fill the pool if both pipes are on? how would this equation be set up?
*September 25, 2008 by jennifer*

**physics**

Two blocks with masses m1 = 1.10 kg and m2 = 3.10 kg are connected by a massless string, as shown in the Figure (the figure shows m1 on top of a box and m2 hanging off the side of the box). They are released from rest. The coefficent of kinetic friction between the upper block...
*February 28, 2012 by meyer *

**physics**

Two blocks with masses m1 = 1.10 kg and m2 = 3.10 kg are connected by a massless string, as shown in the Figure (the figure shows m1 on top of a box and m2 hanging off the side of the box). They are released from rest. The coefficent of kinetic friction between the upper block...
*February 28, 2012 by meyer *

**Integrals/Related Rates(?)/Volume**

Fluid is flowing in a tube that has a radius of 3 centimeters. Water is flowing through a circular cross section at a rate of (9-r^2) cm/s, where r is the distance from the center of the cross section. What is the total amount of water that flows through the cross section in 4...
*March 22, 2012 by Alex*

**Physics **

Assume that the three blocks in Figure P4.27 move on a frictionless surface and that a F = 46 N force acts as shown on the m = 2.5 kg block. Figure P4.27. (a) Determine the acceleration given this system. m/s2 (to the right) (b) Determine the tension in the cord connecting m ...
*February 23, 2012 by Avery *

**Algebra II**

One method of irrigating crops is called the center picot system. This system rotates a sprinkler pipe from the center of the field to be irrigated. Suppose a farmer places one of these units at the center of a square plot of land 2500 feet on each side. With the center of ...
*April 1, 2014 by Alexis*

**science**

I want to figure out the rate of water absorption for different beans. How do I do that calculation? Is it weight of water absorbed over time?
*October 6, 2011 by Alejandro*

**Chemistry**

A 45kg sample of water absorbs 364kJ of heat. If the water was initially at 28.2 Celcius, what is its final temperature? How do I figure this out....HELP!
*January 21, 2013 by Final Water Temperature*

**Physics**

A 1200-N crate is being pushed across a level floor at a constant speed by a force of 260 N at an angle of 20.0° below the horizontal. (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 260 N force is instead pulling the block at an ...
*September 18, 2011 by Elaine Jetton*

**Maths**

If a marble of radius 2.1 cm is put into a cylindrical cup of radius 6cm and height 8cm, then how much water flows out of it.?
*January 23, 2011 by Riya*

**Physics**

Water flows over a section of Niagara Falls at a rate of 1.2×106 kg/ s and falls 50m. How many 60W bulbs can be lit with this power?
*June 30, 2011 by Anonymous*

**math**

a kayak travels 15/h in still water and if the current flows at a rate a 3km/h how long will it take for the kayak to travel 30km upstream
*December 17, 2012 by yvette*

**maths**

A motor boat goes downstream twice as fast as upstream. Find the power speed of the boat if the water flows at 6km/h.
*December 24, 2012 by Anonymous*

**physics**

A light spring with a spring constant of 15.2 N/m rests vertically on the bottom of a large beaker of water, as shown in (a) below. A 5.26 10-3 kg block of wood with a density of 636.0 kg/m3 is connected to the spring, and the mass-spring system is allowed to come to static ...
*May 5, 2013 by John Miller*

**physics**

The range of human hearing is roughly from twenty hertz to twenty kilohertz. Based on these limits and a value of 350 m/s for the speed of sound, what are the lengths of the longest and shortest pipes (open at both ends and producing sound at their fundamental frequencies) ...
*April 28, 2007 by Cavin*

**math**

A tank contains 4L of water at first. Tap A is turned on and water from tap A flows into the container at the rate of 8L per minute. After 3 minutes, Tap B is turned on. Both taps are turned off together after another 5 minutes. If the total amount of water in the container is...
*December 30, 2013 by Lisa*

**Physics**

How many times will the incident beam shown in Figure P25.3 (x = 1.90 m, y = 1.30 m) be reflected by each of the parallel mirrors? mirror on the right
*November 6, 2008 by Nancy*

**algebra**

(a) A graph of is shown in the figure, where y _ L(x). As the weight of the plane increases, what can be said about the length of the runway required?
*June 1, 2011 by logan*

**physics**

How many times will the incident beam shown in Figure P25.3 (x = 1.10 m, y = 1.80 m) be reflected by each of the parallel mirrors? mirror on the right
*September 4, 2011 by nish*

**Physics**

A picture hangs on the wall suspended by two strings, as shown in the figure, with θ = 59°. The tension in string 1 is 1.9 N.
*September 30, 2012 by Hey*

**Physics**

The electric field lines surrounding three charges are shown in the figure below. The center charge is q2 = -15.9 µC.
*April 2, 2013 by Zack*

**physics**

there is a figure that looks kind of like this: E6--------------------- E= -0.378eV E5--------------------- E= -0.544eV E4--------------------- E= -0.850eV E3--------------------- E= -1.51eV E2--------------------- E= -3.40eV the figure shown above shows the enrgy levels for a...
*March 14, 2009 by physics*

**Physics**

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 20 m/s. The cliff is h = 53 m above the water's surface, as shown below. (a) How long does it take for the stone to fall to the water? (b) With what speed does it strike the water?
*January 3, 2010 by Trisha*

**physics**

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 13 m/s. The cliff is h = 58 m above the water's surface, as shown below. (a) How long does it take for the stone to fall to the water? s (b) With what speed does it strike the ...
*October 11, 2011 by Emily*

**physics**

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 16 m/s. The cliff is h = 60 m above the water's surface, as shown below. (a) How long does it take for the stone to fall to the water? s (b) With what speed does it strike the ...
*December 13, 2012 by Anonymous*

**physics**

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 16 m/s. The cliff is h = 60 m above the water's surface, as shown below. How long does it take for the stone to fall to the water? With what speed does it strike the water?
*January 1, 2013 by Anonymous*

**calculus**

Question 1 The figure below shows the rate of change of the quantity of water in a water tower, in liters per day, during the month of April. If the tower had liters of water in it on April 1, estimate the quantity of water in the tower on April . Round your answer to the ...
*November 10, 2011 by megan*

**finance 572**

Briarcrest Condiments is a spice-making firm. Recently, it developed a new process for producing spices. The process requires new machinery that would cost $2,025,141. have a life of five years, and would produce the cash flows shown in the following table.
*October 3, 2013 by Anonymous*

**engineering science**

The power in a resistor RLOAD of 10 Ω when connected to a 100 volt supply is measured using a voltmeter and ammeter. There are two possible ways of connecting the meters as shown in FIGURE 2. The resistances RA and RV represent the internal resistances of the ammeter and ...
*December 9, 2010 by David*

**math**

A water heater has a diameter of 18 inches. It sits in a drain pan that has a diameter of 22 inches and a height of 2 inches, as modeled in the diagram below. Water that leaks out of the water heater sits in the drain pan. Which of the following is closest to the maximum ...
*March 19, 2014 by Tanya*

**Algebra**

a customer wants to make a teepee in his backyard for his children. he plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall. How long should the PVC plumbing pipe be?
*March 10, 2008 by Anonymous*

**Algebra**

a customer wants to make a teepee in his backyard for his children. he plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall. How long should the PVC plumbing pipe be?
*March 10, 2008 by Anonymous*

**Math**

A coustomer wants to make a teepee in his back yead for his kids. He plans on using PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall. Howlong should the PVC plumbing pipe be?
*March 8, 2009 by tom*

**algebra**

A customer wants to make a teepee in backyard for his childrens. He plans to use lengths of PVC plumbing pipe for the suppports on the teepee,and he wants the teepee to be 10 feet across and 12 feet tall. How long should the pieces of PVC plumbing pipe be?
*May 22, 2012 by plz help*

**College physics - Center of mass**

College Physics- Center of Mass? The objects in the figure below are constructed of uniform wire bent into the shapes shown (Figure 1) . Each peice has a length of 0.15 . There are two objects that we need to figure out the x- and y-coordinates of the center of mass of the ...
*October 10, 2012 by Herosugar*

**math**

A customer wants to make a teepee in his back yard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall. How long should the pieces of PVC plumbing pipe be?
*June 20, 2009 by Kay*

**pre algebra**

A customer wants to make a teepee in his backyard for his children he plans to use lengths of PVC plumbing pipe for the supports on the teepee and he wants the teepee to be 12 feet across and 8 feet tall how long should the pieces of PVC plumbing pipe be
*April 24, 2010 by Terry*

**Math**

A river flows at the rate of 2 mph. If a motorboat can travel 12 miles upstream and return in a total of 2.5 hours, what is the speed of the motorboat in still water?
*April 11, 2011 by Anonymous*

**math**

if a river flows south at 10 km/h and a boat moves north against the current at a rate of 18km/hr, what is the net actual speed of the boat in the water
*January 27, 2013 by salman*

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