Tuesday

December 1, 2015
Number of results: 56,455

**physics**

A large chandelier weighing 1500lbs. is suspended from the roof of a theater lobby. The steel pipe from which it hangs is 20ft long. Determine the size of the pipe necessary to carry chandelier safely. Use A36 steel. What is the resulting elongation of the pipe? I calculated ...
*April 17, 2010 by stacey graham*

**physics**

A large chandelier weighing 1500lbs. is suspended from the roof of a theater lobby. The steel pipe from which it hangs is 20ft long. Determine the size of the pipe necessary to carry chandelier safely. Use A36 steel. What is the resulting elongation of the pipe? I calculated ...
*April 17, 2010 by stacey graham*

**Physics**

A solid sphere rolls without slipping from rest down a plane at 4.00m long inclined at an angle of 42 degrees with respect to the horizontal as shown in the figure below. Determine the speed at the bottom of the incline.
*July 2, 2013 by jake*

**physics**

You need to siphon water from a clogged sink. The sink has an area of 0.36 and is filled to a height of 4.0 . Your siphon tube rises 45 above the bottom of the sink and then descends 85 to a pail as shown in the figure. The siphon tube has a diameter of 2.4 A)Assuming that the...
*May 21, 2009 by kelsi*

**physics**

A tennis player moves back and forth along the baseline while waiting for her opponent to serve, producing the position-versus-time graph shown in the figure. (The vertical axis is marked in increments of 1 m and the horizontal axis is marked in increments of 4 s.) (a) Without...
*October 3, 2012 by Anonymous*

**physics**

A power station with an efficiency of 0.35 generates 10^8 W of electric power and dissipates 1.86 ✕ 10^8 W of thermal energy to the cooling water that flows through it. Knowing the specific heat of water in SI units is 4184 J/kg°C, calculate how many kilograms of water ...
*July 16, 2014 by boy*

**math **

a 10-foot ladder is placed against the side of a building as shown i figure i below.the bottom of the ladder is 8 feet from the base of the building .in the order to increase the reach of the ladder against the building ,it is moved 4 feet closer to the base the bulding shown ...
*May 14, 2013 by kirandeep*

**physics**

A lighthouse that rises h1 = 47.0 ft above the surface of the water sits on a rocky cliff that extends d = 17.4 ft from its base, as shown in the figure below. A sailor on the deck of a ship sights the top of the lighthouse at an angle of theta = 29.3 degree above the ...
*January 25, 2014 by Sam*

**physics **

compare the relation of fundamental frequencies for a pipe closed at one end and for a pipe open at both ends
*March 19, 2013 by shashi ranjan*

**Chemistry Physics**

A steel pipe 8.25 m long is installed at 45°C. Find the decrease in length when coolants at -60°C pass through the pipe
*November 5, 2014 by Digby*

**Math**

Farmer Mansfield wants to find whether the straight pipes are parallel. The distance from barn B to the north end of pipe 1 is 143 ft, and from there to the north end of pipe 2 is 42 ft. The distance from the barn to the south end of pipe 1 is 121 ft, and from there to the ...
*March 4, 2011 by Anonymous*

**Geometry**

Joel is laying pipe for a sprinkler system before he plants his lawn.The lawn is a rectangle 15 feet long and 8 ft wide. He needs to lay a piece if pipe that will run diagonal along the lawn. It will divide the area of the lawn into two right triangles. what will be the length...
*June 21, 2012 by Ashley*

**geometry**

he small pipe has a radius of 18 feet and a height of 21 feet while the large pipe has a height of 28 feet. What is the volume of the large pipe in terms of π?
*January 4, 2013 by Anonymous*

**Science**

When people want to use water to create electricity they generally build a dam to hold the water back, creating a large lake behind the dam. Why is it necessary to hold the water back with a dam in order to produce electricity? A)It increases the amount of water available. B)...
*April 4, 2012 by Mia pleaseee helppp*

**Physics**

An organ pipe open at both ends has a harmonic with a frequency of 480 Hz. The next higher harmonic in the pipe has a frequency of 540 Hz. Calculate the frequency of the fundamental and the length of the pipe. I know 540/480 is 9/8. I have no idea where to go from here.
*January 26, 2011 by Rachel*

**Math**

swimming pool Theflow rate for one pipe is 1 1/4 that of another pipe. A swimming pool can be filled in 5 hours using both pipes. Find the time to fill the pool only using the pipe with the lower flow rate.
*February 11, 2012 by Anonymous*

**physics**

Oil Flows through a horizontal cylindrical pipeline with an average speed of 1.2 m/s. The pipeline has a radius of 0.5 metres. Calculate the volume of oil (in cubic metres) which flows through this pipeline in one hour.
*June 21, 2014 by muller*

**physics**

A physical pendulum is constructed of a 48 cm long piece of wooden dowel with a mass of 550 grams and a radius of 0.7 cm. Attached at one end of the pipe is a hoop with a radius of 6 cm and a mass of 1.2 kg as shown. The pendulum is released from the 12:00 position and allowed...
*January 23, 2015 by Jessica*

**engineering**

The flow system as shown in the Figure, the centrifugal pump(3500 R.P.M.) is delivering water at 100 gal/min and 70 °F into a boiler operating at a pressure of 35 psig. The water levels in the feed tank and boiler are constant. Because corrosion is expected to be negligible, ...
*December 18, 2013 by sun.life*

**AP PHYSICS MECH. **

Need help urgent!!! A system consist of a ball of M2 and a uniform rod of M1 and length d. The rod is attached to a horizontal frictionless rotates at an angular speed w, as shown in the figure. The rotational inertia of the rod about point P is ? M1 d^2. The rod strikes the ...
*March 24, 2011 by vm*

**Physics**

A crate is given an initial speed of 3.1 m/s up the 29 degree plane shown in the figure . Assume coefficient of friction = 0.17. How far up the plane will it go? How much time elapses before it returns to its starting point?
*June 18, 2012 by Anonymous*

**physics**

A 2.0-m-tall basketball player is standing on the floor a distance d from the basket, as shown in the figure below. He shoots the ball at an angle of 40.0o above the horizontal with a speed of 10.67 m/s and makes the shot. The height of the basket is 3.05 m. What is d?
*July 29, 2013 by kiki*

**Physics**

a person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 10 m/s. the cliff is 48 m above the water's surface as shown. how long does it take for the stone to fall to the water? the acceleration of gravity is 9.81 m/s2. answer in units of s
*October 17, 2014 by Kenny*

**Physics**

a plastic light pipe has anindex of refraction 1.53.For total internal reflection, what is the minimum angle of incidence if the pipe was in the air
*April 27, 2012 by @@@TASHA@@@*

**Geography**

This is my last question that I'm struggling with. We had to do 25 of them and this one I can't figure. Thank you for your help. It's greatly appreciated. Have a great weekend!!! More water flows through the Amazon Basin than through any other river system. Historically, ...
*September 10, 2010 by Hannah*

**physics**

Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.44 m/s, while the speed of the current is 2.0 m/s. If it takes the swimmer 180 s to cross the river, how wide is the river?
*October 4, 2012 by Garcia*

**Physics**

Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.45 m/s, while the speed of the current is 2.0 m/s. If it takes the swimmer 160 s to cross the river, how wide is the river?
*September 24, 2014 by Natalie*

**Physics**

Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.40 m/s, while the speed of the current is 2.2 m/s. If it takes the swimmer 200 s to cross the river, how wide is the river
*September 25, 2014 by Judy*

**Science**

1. How does groundwater cause erosion and deposition? a. When acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves. *** b. When a river overflows, it moves downhill, resulting in the formation of caves. c. When it rains, water ...
*March 3, 2014 by Hannah*

**physics**

Two boat landings are 6.0 km apart on the same bank of a stream that flows at 2.8 km/h. A motorboat makes the round trip between the two landings in 50 minutes. What is the speed of the boat relative to the water?
*September 14, 2011 by Ashley*

**physics**

Two boat landings are 8.0 km apart on the same bank of a stream that flows at 2.8 km/h. A motorboat makes the round trip between the two landings in 50 minutes. What is the speed of the boat relative to the water?
*August 9, 2014 by Danielle*

**physics**

Two boat landings are 8.0 km apart on the same bank of a stream that flows at 2.8 km/h. A motorboat makes the round trip between the two landings in 50 minutes. What is the speed of the boat relative to the water?
*August 10, 2014 by Thomas*

**Fluids**

A pipe of constant diameter d = 10.5 cm carries water up a hill h = 38.1 m high. How much pressure is required at the bottom of the hill if the water is to reach the top? Any help would be great
*March 9, 2012 by Sasha*

**Physics**

a speed boat is moving though the water at a speed of 28 m/s when the engine stalls. the boat comes to a halt over 120m, what is the time it takes to stop and what is the acceleration. im trying to figure it out but i dont know what kinematic equation to use
*August 27, 2015 by Neil*

**math**

A water system of 2 in.(inside diameter) pipe, having a length of 1/4 mile, is to be flushed with a volume of water equal to twice that contained in the system. how much water (gallons) must be flushed through the system? (note: one cubic foot=7.481gal.)
*February 11, 2013 by Wilfredo*

**Physics**

A child with a mass of 35.0 kg climbs onto a water slide that is 2.00 m above the water as shown. The child does not push off, and so is at rest when the sliding begins. The slide is very slippery, and is considered frictionless. (i) What is the work done by the normal force ...
*March 2, 2013 by Meder*

**physics**

7. The speed of a man with and against the water currents in a river are 15km/h and 5km/h respectively. Find his speed in still water and the speed of the water currents.
*May 31, 2014 by Anonymous*

**Math**

plumber needs four sections of pipe 2 7 8 feet long. Can this be cut from a 12 foot section? If so, how much pipe will be left over? If not, why not?
*March 25, 2010 by Kirk*

**PHYSICS (HELP)**

A gyroscope consists of a uniform disc of mass radius M= 1 kg and radius R= 0.1 m . The disc spins with an angular speed ω= 300 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizontal (see figure). The ...
*November 14, 2013 by Anonymous*

**Plastic Moulds ==> Couldn't find anything myself**

I'm proposed a way I'd synthesize plastic...polyethylene to shape into a pipe PROBLEM: not sure how or what I would use to make a mold or best method to produce a PIPE not sure what a mold should look like to produce a hollow object like a pipe. OR what material I can use ...
*February 25, 2008 by ~christina~*

**physics**

A mass of 8.10 kg is suspended from a 1.69 m long string. It revolves in a horizontal circle as shown in the figure. The tangential speed of the mass is 2.92 m/s. Calculate the angle between the string and the vertical.
*February 17, 2011 by Sarah*

**Math word problem check**

The Mad River flows at a rate of 3 km/h. In order for a boat to travel 78.2 km upriver and then return in a total of 8 hr, how fast must the boat travel in still water? what formula would be used to solve this problem? I used the formula of V = D/T T = D/V, you know that 78.2...
*November 9, 2008 by Shawn*

**Physics**

Lubricating oil, with a relative density of 0.79, flows around a 90¨¬ bend. The pipe diameter is 0.45m, and the oil has a pressure head of 7m and the flow is 1.7m3/s. Find the force exerted by the oil on the bend. Oil density = 0.79 X 103 Volumetric mass flow rate = 1.7 m3/s ...
*April 22, 2009 by Henri*

**Physics**

Lubricating oil, with a relative density of 0.79, flows around a 90¨¬ bend. The pipe diameter is 0.45m, and the oil has a pressure head of 7m and the flow is 1.7m3/s. Find the force exerted by the oil on the bend. Oil density = 0.79 X 103 Volumetric mass flow rate = 1.7 m3/s ...
*April 23, 2009 by Henri*

**Calculus**

The hemispherical tank shown is full of water. Given that water weighs 62.5 lb/ft3, find the work required to pump the water out of the tank. ---------- What is shown is just the tank (a hemisphere) with a radius of 5 ft. ---------- First I calculated the Volume of the ...
*June 17, 2007 by COFFEE*

**Algebra 1**

The first of three pipes fills a tank in 12 minutes and a second pipe in 10 minutes.If both these pipes and also a third pipe are open, the tank is filled in 4 minutes. How many minute will the third pipe alone require to fill the tank? Just need an equation. Thank you!
*February 22, 2013 by NEED HELP NOW!!*

**physics**

When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure P8.16a. The total gravitational force on the body, Fg, is supported by the force n exerted by the floor on the toes of one foot. A mechanical model of the situation is shown ...
*October 23, 2010 by rabhimself*

**college physics**

Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide away together after ...
*February 24, 2011 by lala*

**college physics**

Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide away together after ...
*February 24, 2011 by lala*

**physics**

A satellite that is spinning clockwise has four low-mass solar panels sticking out as shown; the mass of the satellite is 750 kg. A tiny meteor of mass 2 kg traveling at high speed rips through one of the solar panels and continues in the same direction but at reduced speed. ...
*June 9, 2011 by Daiyo*

**math/hurry**

A plumber needs four sections of pipe 2 7/8 feet long. Can this be cut from a 12 foot section? If so, how much pipe will be left over? If not, why not?
*March 26, 2010 by Kirk*

**Physics**

The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.87 m above the floor. When m1 hits the ground its speed is 1.4 m/s. Assume that the pulley is a uniform disk with a radius of 12 cm. ...
*March 8, 2010 by Mary*

**Physics**

The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.91 m above the floor. When m1 hits the ground its speed is 1.5 m/s. Assume that the pulley is a uniform disk with a radius of 12 cm. ...
*March 8, 2010 by Jon*

**Physics**

The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in the figure are released from rest, with m1 at a height of 0.91 m above the floor. When m1 hits the ground its speed is 1.0 m/s. Assume that the pulley is a uniform disk with a radius of 12 cm. ...
*November 14, 2014 by Kim*

**physics**

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 22.0 m/s. The cliff is h = 23.0 m above a flat horizontal beach, as shown in the figure below.
*September 27, 2010 by Erin*

**physics**

In the apparatus shown in the figure (Figure 1) , m1 = 10kg and the coefficients of static and kinetic friction between m1 and the table are 0.69 and 0.32, respectively. Part A What mass of m2 will just barely set the system in motion?
*October 3, 2013 by tom*

**problem solving**

Suppose water flows from a shower at a rate of 0.38 cubic feet per minute. Do you use more water by taking a 14-minute shower or by filling a bathtub with 0.6 cub yards of water, and by how much? Demonstrate strep-by-step solution.
*December 8, 2012 by ben*

**Physics**

A block of mass m1 = 2.4 kg initially moving to the right with a speed of 3.3 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially moving to the left with a speed of 1.5 m/s as shown in figure (a). The spring ...
*October 14, 2013 by Leticia*

**Physics**

A block of mass m1 = 2.4 kg initially moving to the right with a speed of 3.3 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially moving to the left with a speed of 1.5 m/s as shown in figure (a). The spring ...
*October 14, 2013 by Leticia*

**p**

A newly planted tree is supported against the wind by a rope tied to a stake in the ground, as shown in the figure below. The force of the wind, though distributed over the tree, is equivalent to a single force F, as shown in the figure. Find the tension in the rope. Assume ...
*March 26, 2012 by JOHN*

**physics**

A ball of mass m = 0.2 kg is attached to a (massless) string of length L = 3 m and is undergoing circular motion in the horizontal plane, as shown in the figure. What should the speed of the mass be for θ to be 46°? What is the tension in the string?
*March 19, 2011 by laila*

**physics**

ball of mass m = 0.2 kg is attached to a (massless) string of length L = 3 m and is undergoing circular motion in the horizontal plane, as shown in the figure. What should the speed of the mass be for θ to be 46°? What is the tension in the string?
*March 20, 2011 by Anonymous*

**geometry**

a hollow cylindrical pipe is 21m long .its outer and inner diameters are 10 cm and 6cm respectively .find the volume of copper used in making the pipe?/
*February 25, 2012 by Anonymous*

**Physics**

A 67.0 kg person, standing on a diving board, dives straight down into the water. Just before striking the water, her speed is 5.50 m/s. At a time of 1.75 s after she enters the water, her speed is reduced to 1.10 m/s. What is the net average force (magnitude and direction) ...
*March 18, 2012 by Foxxi*

**Physics Questions Help Please!**

1) The lowest tone to resonate in an open pipe of length L is 1600 Hz. What is the frequency of the lowest tone that will resonate in a closed pipe of length 2L? a) 100 Hz b) 1.60 Hz c) 200 Hz d) 0.800 kHz 2) Which of the following does not increase as a sound becomes louder? ...
*December 5, 2014 by Kimberly *

**physics**

A puck on a horizontal, frictionless surface is attached to a string that wraps around a pole of finite radius, as shown in the figure . As the puck moves along the spiral path, does its speed increase, decrease, or stay the same?
*January 22, 2012 by Patrick*

**physics**

Water flows through a horizontal tube of diameter 2.9 cm that is joined to a second horizontal tube of diameter 1.5 cm. The pressure difference between the tubes is 7.2 kPa. Find the speed of flow in the first tube.
*December 4, 2011 by jazz*

**Physics HELP!!**

A gyroscope consists of a uniform disc of mass radius M= 1 kg and radius R= 0.3 m . The disc spins with an angular speed ω= 200 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizontal (see figure). The ...
*November 20, 2013 by bob*

**math- word problems**

I tried doing this problem but i just dont get it: A boy has 16 coins consisting of nickles, dimes, and quarters. The number of nickles is 3 less than the number of dimes and the value of the quarters is 55 cents greater than the value of the dimes. How many coins of each kind...
*September 24, 2008 by kayla*

**physics**

Water flows through a horizontal tube of diameter 2.9cm that is joined to a second horizontal tube of diameter 1.5 cm. The pressure difference between the tubes is 7.2 kPa. A)Find the speed of flow in the first tube.
*December 4, 2011 by jazz*

**Physics**

A circuit is composed of a capacitor C=3 μF, two resistors both with resistance R=69 Ohm, an inductor L=6.00e-2 H, a switch S, and a battery V=25 V. The internal resistance of the battery can be ignored . Reminder: The "L=x.xxenn H" notation means "L=x.xx×10nn H". (The ...
*June 17, 2013 by AAA*

**physics**

The three charges shown in Figure P16.17 are at the vertices of an isosceles triangle. If q = 16.0 10-9 C, calculate the electric potential at the midpoint of the base. V Figure P16.17
*May 15, 2012 by Paige*

**Computer science**

Write an HTML form that prompts the user to enter loan amount, interest rate, and number of years, as shown in Figure 1. Clicking the Compute Payment button invokes a JSP program to compute and display the monthly and total loan payments, as shown in Figure 2. Use the Loan ...
*July 21, 2013 by AN3852*

**physics**

trying to raise a barrel using sections of pipe.The three objects are horizontal cylinders resting on level ground. The barrel has a mass of 100 kg and its diameter is 2.0m. Each pipe has a diameter of 0.50 m. What minimum horizontal force must his feet exert on the pipe to ...
*October 19, 2011 by John*

**Physics**

"Water flows over a section of Niagara Falls at the rate of 1.2*10^6 kg/s and falls 50.0m. How much power is generated by the falling water?" It's a the kg/s that is confusing me. I don't know how to work with it.
*July 25, 2010 by Stuck*

**calculus**

A conical tank has height 3 m and radius 2 m at the top. Water flows in at a rate of 1.4 \text{m}^3\text{/min}. How fast is the water level rising when it is 2.6 m?
*March 7, 2014 by MEMO*

**physics**

In a spray can,the flow of air makes paint flow up the tube. As the air flows, it is blown away in droplets. A)as the air flows what happens to its speed and pressure? Why? B)why does the paint flow up the tube?
*June 9, 2014 by Haiano*

**Algebra HELP!**

Ryan is building matchstick square sequences, as shown ( first figure used 4, second figure used 7, third figure used 10, and the forth figure used 13). He used 599 matchsticks to form the last two figures in his sequences. How many matchsticks did he use in each of the last ...
*November 6, 2014 by A*

**Calculus**

If water is lost at 20ft^3/day when W= 10,000 ft^3 then the leakage rate constant in the differential equation is 20/10,000 or 0.002. Suppose that water flows in at F= 200,000 ft^3/day. How much water would you predict in the lake after 100 days?\ W = Ce^(-kt)
*February 7, 2010 by Lara*

**New Light Academy**

A uniform cylindrical pipe has an external diameter of 3.6cm and an internal diameter of 2.8cm. a)Calculate the volume of the material required to construct a metre length of the pipe. b)One cubic metre of material used has a mass of 44kg.Calculate the mass of 60m of such a ...
*August 28, 2015 by Kenneth*

**English**

The towns water pipe was in the way of the new bridge
*February 4, 2013 by Tajuan parks*

**physics**

Water flows through a horizontal tube of diameter 2.6cm that is joined to a second horizontal tube of diameter 1.7cm . The pressure difference between the tubes is 8.0kPa.Find the speed of flow in the first tube.
*January 30, 2011 by Sid*

**math**

Suppose water flows from a shower at a rate of 0.32 cubic feet per minute. Do you use more water by taking a 12-minute shower or by filling a bathtub with 0.4 cubic yards of water, and by how much?
*September 28, 2013 by Anonymous*

**Physics**

I did a lab in which we were to find the 1st resonance and 2nd resonance and from them we found wavelength which in turn helped us find speed of sound. We used tuning forks and the frequancy was given. We besically moved a plastic tube which was in water up along with he ...
*March 8, 2009 by Lena*

**Physics**

Two balls of the same volume are released inside a tank filled with water as shown in the figure. The densities of balls A and B are 0.86 g/cm3 and 0.55 g/cm3. (The density of water is 1.00 g/cm3. Take the +y direction to be up. Indicate the direction with the sign of your ...
*November 7, 2011 by mymi*

**physics**

The spring of the pressure gauge shown in the figure below has a force constant of 1,160 N/m, and the piston has a radius of 1.22 cm. As the gauge is lowered into water, what change in depth causes the piston to move in by 0.750 cm?
*November 3, 2012 by keli*

**physics**

The spring of the pressure gauge shown in the figure below has a force constant of 1,080 N/m, and the piston has a radius of 1.43 cm. As the gauge is lowered into water, what change in depth causes the piston to move in by 0.750 cm?
*November 26, 2012 by dale*

**math**

Water is flowing at the rate of 15km/hr. Through a cylindrical pipe of radius 7cm into a rectangular tank which is 50m long and 44m wide.In how many hours will the water label in the tank raised by 21cm
*March 7, 2014 by Aashi*

**maths**

Water is flowing at the rate of 15km/hr through a cylindrical pipe of radius 7cm into a rectangular tank which is 50m long and 44m wide. In how many hours will the water level in the tank raise by 21cm
*March 12, 2015 by nivi*

**geometry**

The figure shown is a rectangle. the green shape in the figure is a square. The blue and white figures are rectangles, and the area of the blue rectangle is 24 square inches. a. write an expression for the area of the entire figure that includes an exponent. Then find the area...
*April 17, 2015 by catsanddogs*

**physics**

A Chinook (King) salmon (Genus Oncorynchus) can jump out of water with a speed of 5.95 m/s. (See Problem 4.9, page 111 for an investigation of how the fish can leave the water at a higher speed that it can swim underwater.) If the salmon is in a stream with water speed equal ...
*February 22, 2012 by micheal*

**physics**

A Chinook (King) salmon (Genus Oncorynchus) can jump out of water with a speed of 5.95 m/s. (See Problem 4.9, page 111 for an investigation of how the fish can leave the water at a higher speed that it can swim underwater.) If the salmon is in a stream with water speed equal ...
*February 22, 2012 by micheal*

**Physics**

An incompressible fluid is flowing through a horizontal pipe with a constriction. The velocity of the fluid in the wide section of the pipe is 4.00 m/s and the velocity of the fluid in the narrow section of pipe is 9.00 m/s. The pressure of the fluid in the wide section is 250...
*November 10, 2013 by Mikhail*

**Math**

On a site plan for a new house, a water main runs along the edge of the property straight from point W(10, 34) to point M(2, 2). The water service will enter the house at point H(24, 22). The grid intervals on the plan represent 0.5m. A) At what point on the water main should ...
*January 14, 2011 by Afreesh*

**Physics**

The athlete shown in the figure rotates a 1.00 kg discus along a circular path of radius 1.07 m. The maximum speed of the discus is 19.0 m/s. Determine the magnitude of the maximum radial acceleration of the discus.
*February 5, 2011 by Snooki*

**Physics Classical Mechanics**

A gyroscope consists of a uniform disc of mass radius M= 2 kg and radius R= 0.2 m . The disc spins with an angular speed ω= 300 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizontal (see figure). The ...
*November 14, 2013 by Anonymous*

**physics**

A fisherman sets out upstream from Metaline Falls on the Pend Oreille River in northwestern Washington State. His small boat, powered by an outboard motor, travels at a constant speed v in still water. The water flows at a lower constant speed vw. He has traveled upstream for ...
*February 16, 2011 by Anonymous*

**physics**

A fisherman sets out upstream from Metaline Falls on the Pend Oreille River in northwestern Washington State. His small boat, powered by an outboard motor, travels at a constant speed v in still water. The water flows at a lower constant speed vw. He has traveled upstream for ...
*February 18, 2011 by Anonymous*

**Physics**

A disk with a mass of 13 kg, a diameter of 25 cm, and a thickness of 8 cm is mounted on a rough horizontal axle as shown on the left in the figure. (There is a friction force between the axle and the disk.) The disk is initially at rest. A constant force, F = 70 N,is applied ...
*October 25, 2010 by Donny*

**Physics 1**

Consider a roller coaster that moves along the track shown in the figure below. Assume all friction is negligible and ignore the kinetic energy of the roller coaster's wheels. Assume the roller coaster starts with a speed of 19 m/s at point A. Find the speed of the roller ...
*October 8, 2012 by John *