1. Chemistry

    A hard water sample contains 121 mg of CaCO3 per liter of water. Calculate the mass of Na3Po4 needed to remove all Ca^2+ ions from 2.50 L of the water sample?

    asked by Angela on June 30, 2013
  2. Chemistry

    When 1.00 kg lead (specific heat = 0.13 J g -1 C -) at 100.0 C is added to a quantity of water at 28.5C, the final temperature of the lead-water mixture is 35.2 C. What is the mass of water present?

    asked by Bob on October 21, 2013
  3. TTM

    You drained the water from your pool at the end of the summer. It took 60 minutes to drain 1,800 gallons of water. On average, by what amount did the water in the pool change per minute?

    asked by Animegirl on November 6, 2015
  4. chemistry

    Assume that the pressure is one atmosphere and determine the heat in joules required to produce 3.23 kg of water vapor at 100.0 °C, starting with (a)3.23 kg of water at 100.0 °C and (b)3.23 kg of liquid water at 0.0 °C

    asked by need on December 14, 2010
  5. algebra

    the water ina beaker has of18g electeicity is passed thought the water for two hours afterward the water has a mass of only 16g what happen to the missing mass?

    asked by mary on September 17, 2014
  6. math fractions

    The teacher gives each pair of students one and fourteen-fifteenths liters to water their plants in the garden. If the pairs of students share the water evenly how much water does each student get

    asked by Kiki on September 30, 2015
  7. Physics

    A sprinkler mounted on the ground sends out a jet of water at a 30 ∘ angle to the horizontal. The water leaves the nozzle at a speed of 11 m/s . How far does the water travel before it hits the ground?

    asked by raquel on October 16, 2015
  8. Chemistry

    A flask partially full of liquid water is heated to boiling and capped cold water is poured over the flask. The water boils even more vigorously explain

    asked by Noel on April 11, 2011
  9. PHYSICS

    A sprinkler mounted on the ground sends out a jet of water at a 20 ∘ angle to the horizontal. The water leaves the nozzle at a speed of 11 m/s . How far does the water travel before it hits the ground?

    asked by Meg on October 16, 2015
  10. Physics

    The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface, and 1.65 s later, the reflected signal is detected. How deep is the water?

    asked by Kalley on May 11, 2010
  11. BIOLOGY!

    In order to keep veggies crisp, grocery stores use coold water or ice. Which would keep veggies crisper, tap water or distilled water? Explain. I have no idea...

    asked by Anonymous on December 17, 2010
  12. Chemistry

    54.64 g of water at 82.1 oC is added to a calorimeter that contains 52.69 g of water at 42.3 oC. If the final temperature of the system is 59.4 oC, what is the calorimeter constant (Ccalorimeter) ? Use 4.184 J/goC for the heat capacity of water. I got 32

    asked by milo on October 18, 2017
  13. chemistry

    2H2O(l)=2H2(g) +O2(g) if water is removed, the direction of equilibrium is unaffected since liquid water is not in the equil equation. What if large amount of water is removed, is the answer still the same

    asked by bme1 on April 25, 2010
  14. Physics

    What size motor [W] is required to pump 12,000 gallons of water up a water tower (with a height of 25 ft.) in 25 minutes? The density of water is 1,000 kg/cubic meter.

    asked by Brianb on October 18, 2011
  15. physics

    The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface, and 1.95 s later, the reflected signal is detected. How deep is the water?

    asked by kara on March 6, 2012
  16. physics

    The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface, and 1.62 s later, the reflected signal is detected. How deep is the water?

    asked by Anonymous on February 20, 2012
  17. Chemistry

    Consider a segment of water in the ocean that has a saturation solubility of 7.5 mg/L of O2. If there are algae in this body of water consuming CO2 at 1.0 mg/hr, how quickly will the water reach saturation if it starts at no O2 dissolved?

    asked by Anonymous on July 17, 2012
  18. physics

    The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface, and 1.95 s later, the reflected signal is detected. How deep is the water?

    asked by kara on March 6, 2012
  19. chemistry

    sample of liquid water at 100 degrees C absorbs 113 kJ of heat. HOw much water will be converted to steam heat vaporization if water is 2.26 kJ/g I just need help with what formula to set this up

    asked by LG on July 21, 2011
  20. physics

    Assume that the pressure is one atmosphere and determine the heat in joules required to produce 3.23 kg of water vapor at 100.0 °C, starting with (a)3.23 kg of water at 100.0 °C and (b)3.23 kg of liquid water at 0.0 °C

    asked by Help on December 14, 2010
  21. Physics

    Assume that the pressure is one atmosphere and determine the heat in joules required to produce 2.99 kg of water vapor at 100.0 °C, starting with (a)2.99 kg of water at 100.0 °C and (b)2.99 kg of liquid water at 0.0 °C.

    asked by Tim on May 5, 2013
  22. math

    A trough (a place where horses and sheep drink water) has the shape of a half-cylinder with length 4 m and radius 20 cm. Water is poured into the trough at a constant rate of 300 cm3/s. At what rate (in cm/s) is the level of the water in the trough rising

    asked by ani on February 22, 2015
  23. math

    A trough (a place where horses and sheep drink water) has the shape of a half-cylinder with length 4 m and radius 20 cm. Water is poured into the trough at a constant rate of 300 cm3/s. At what rate (in cm/s) is the level of the water in the trough rising

    asked by emy on February 21, 2015
  24. english

    i need help in forming my ideas into good sentences. i taken all these ideas from a movie that we watch from the class 1. Water is the source of life, we all depend on it,Water is important, We cannot survive a week without water 2. Water should be free,

    asked by ESLstudent on February 27, 2012
  25. Statics

    Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random

    asked by Faith on July 19, 2011
  26. Math

    1. You gathered data and realized that the temperature drop followed the function T=85 (0.3)^t/2 where T is the temperature in Celsius and t is the time in hours the water was left out for. A. What was the initial temperature of the water when it was

    asked by David on April 3, 2018
  27. Calculus

    The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

    asked by nan on March 12, 2016
  28. Calculus

    The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

    asked by Una Rosa on March 12, 2016
  29. math

    really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high above the water is the cliff (

    asked by melissa on May 16, 2011
  30. math

    i really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high above the water is the cliff

    asked by melissa on May 15, 2011
  31. math

    really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high above the water is the cliff (

    asked by melissa on May 17, 2011
  32. Finance

    Is it more economical to buy an automobile for $29,000 cash or to pay $4,500 down and $3,000 at the end of each quarter for 2 years, if the money is worth 8% compounded quarterly? what is the cash equivalent savings by picking the better plan?

    asked by sabrina on September 28, 2011
  33. algebra 1 help

    3) the ideal width of a safety belt strap for a certain automobile is 5 cm. an actual width can vary by at most 0.35 cm. write an absolute value inequality for the range of acceptable widths. a. |w+5|≤ 0.35 b. |w-0.35| ≤ 5 c. |w+0.35|≤ 5 d.

    asked by hips on April 26, 2013
  34. business math

    Is it more economical to buy an automobile for $29,000 cash or to pay $4,500 down and $3,000 at the end of each quarter for 2 years, if the money is worth 8% compounded quarterly? What is the cash equivalent savings by picking the better plan?

    asked by sabrina on September 29, 2011
  35. Science

    I have 59.73 grams of a solid dissolved into water. The total is now 115ML of water. I added the water into a beaker already containing said solid. I did not measure how much water I put into the beaker. 59.73g/115ML=0.51g/ML My question is. Is this the

    asked by Dave on June 12, 2015
  36. SCI

    Hypothetically speaking, I placed a cell in a glass of water and after about a day the cell grew in size. Why did the cell grow? Well I was thinking this: The reason the cell grew was because there was a higher concentration of water outside of the cell

    asked by Lena on September 24, 2008
  37. Chemistry Lab Work Help!

    We used a buret today, and I don't get how to calculate volume. I have an initial reading of 49.97 and a final buret reading of 30.49. How do I get the volume? I thought I just subtracted the final from the initial, but someone said their tutor told them

    asked by Anonymous on November 13, 2015
  38. science

    Are there hydgrogen bonds between water molecules in the liquid phase No, and if there were, the water would just be ice (a solid). Yes, and they are continually breaking and reforming. Yes, but they rarely ocuur. No, otherwise the water molecules would

    asked by Adam on March 5, 2012
  39. Physics

    "Luke Skywalker mixes 250g of hot water (75 deg C) with 500g of cool water (15 deg C). What is the final temperature of the water?" If someone could just give me a formula, I'd be fine. :)

    asked by Jen on October 4, 2008
  40. Science.

    You are carrying a 3.4 gallon jug full of cold water. Given that the water has a density of 1.0 grams per milliliter, and one gallon is equal to 3.8 liters, state the mass of the water in kilograms.

    asked by Jeremy on August 22, 2012
  41. math

    a cyclindrical water storage tank contains 2187 cubic units of water. All the water is pumped equally into 3 congruent cubic coolers. What is the minimum length that each coller need to be?

    asked by lisa on May 5, 2016
  42. Math

    A rectangular container 45cm long and 25cm wide was full of water. After removing 22.5 liters of the water, the level of water became 4cm high. What was the height of the container?

    asked by kudu on January 31, 2015
  43. PHysics

    An athlete crosses a 21 m wide river by swimming perpendicular to the water current at a speed of 1.1 m/s relative to the water. How fast is the water in the river flowing with respect to the ground in m/s?

    asked by Seth on September 10, 2015
  44. physics

    A beam of light is emitted in a pool of water from a depth of 64.0 cm. How far away, relative to the spot directly above it, must it strike the air-water interface in order that the light does not exit the water?

    asked by anonymous on April 21, 2011
  45. geometry

    A hemisphere tank is filled with water and has a diameter of ten feet. If the water weighs 62.4 pounds per cubic foot, what is the total weight of water in a full tank?

    asked by jim on February 22, 2016
  46. Physics

    A beam of light is emitted in a pool of water from a depth of 61.5 cm. How far away, relative to the spot directly above it, must it strike the air-water interface in order that the light does not exit the water?

    asked by Anonymous on March 15, 2010
  47. Math

    How would you go about solving this problem? A 2000 L tank containing 550 L of water is being filled with water at the rate of 75 L per minute from a full 1600 L tank. How long will it be before the two tanks have the same amount of water?

    asked by Megan on October 13, 2008
  48. Physics

    A sprinkler mounted on the ground sends out a jet of water at a 35∘ angle to the horizontal. The water leaves the nozzle at a speed of 15m/s . How far does the water travel before it hits the ground?

    asked by Tommy on June 17, 2015
  49. chem

    What advantage is there to adding salt to cooking water? and what conditions are necessary for ideal carbonation of a beverage? please help http://www.miniscience.com/projects/Saltwater/index.html http://www.physlink.com/Education/askExperts/ae643.cfm

    asked by Horacio on May 20, 2007
  50. heith

    Shirley has two containers of water for a camping trip. One container holds 2 times as much as the other. The total amount of water is 30 gallons. How much water is in each container?

    asked by zach on August 28, 2015
  51. physics

    A water tank springs a leak. Find the speed of water emerging from the hole if the leak is 2.5 m below the surface of the water, which is open to the atmosphere.

    asked by aok on December 7, 2010
  52. physics

    A 0.0320-m3 container is initially evacuated. Then, 5.27 g of water is placed in the container, and, after some time, all of the water evaporates. If the temperature of the water vapor is 352 K, what is its pressure?

    asked by Anonymous on November 28, 2013
  53. physics

    A diver jumps from a height of 24.0m into a swimming pool. What's her speed when she enters the water? (21.7m/s) if the diver stops after sinking 3m into the water, what's the acceleration in the water? (78.4m/s^2)

    asked by Sammeh on November 14, 2009
  54. MATH

    A water plant can process 25 million gallons of water a day. How many gallons of water does it produce per hour? Round to the nearest hundredth.

    asked by Taren on October 1, 2014
  55. MATH UGH WORD PROBLEM

    About 7.5 gallons of water occupy one cubic foot. About how many gallons of water are in a clindrical water tank with dimensions with 100 ft radius and 40 ft height.

    asked by andra on April 2, 2014
  56. physics

    a 2.00 lb rock is dropped from a bridge to the water 50 below. a. what is the velocity as it hits the water? b. how long does it take to hit the water? c. What is its kinetic energy as it hits the H2o?

    asked by carol on November 24, 2013
  57. math

    If you pour 500,000 cubic centimeters of water in a barrel that was already holding 300 liters of water, how much total water would be in the barrel?

    asked by Max on November 21, 2010
  58. Chemistry

    Analysis of Tap water (Hardness) Was analyzed by a complexometric titraion by the following equations 1 & 2 1. Ca^2+ + Mg^2+ --> Ca^2+ + Mg(Indicator) 2. Mg(Indicator) + Ca^2+ + EDTA^4- --> CaEDTA^2- + MgEDTA^2- + free indicator For the volume of titrant

    asked by Lauren--PLEASE HELP on November 29, 2009
  59. Chemistry - urgent help needed

    The following is part of a procedure for a limit test for sulphates in an NaOH sample:- Dissolve 3.0g of NaOH in 6ml of deionized water, adjust to pH 7 with 12M HCl (about 6.2ml) and dilute to 15ml with deionized water. When about 6ml of 12M HCl was added,

    asked by candy on September 22, 2010
  60. Physics(pleaseee help!!)

    You drop a water balloon on your friend’s head from the third-story window of your apartment building, 15.0 m from the ground. What is the water balloon’s acceleration while it is in the air? • How much time does it take for the water balloon to

    asked by Maria Jose on September 25, 2014
  61. Calculus - Rates of Change

    A water tank has a shape of an inverted cone with a base radius of 2m and a height of 4 m. If water is being pumped into the tank at a rate of 2m3/min, then find the rate at which the water level is rising when the water is 3m deep. Attempted solution: V=

    asked by Melissa on March 8, 2016
  62. CHEMISTRY

    1× SDS Running Buffer For this exercise, you will need to prepare 1 L of 1x SDS Running Buffer. The final composition of this buffer is: 25 mM Tris, 200 mM Glycine pH 8.3, 0.1% (w/v) SDS 1. To a 1 L beaker, add 500 ml of distilled water. Place a magnetic

    asked by Samari on March 20, 2018
  63. ap chemistry

    Jeff and Jill go canoeing. While reaching to feed a duck, the boat flips. Jeff and Jill blow up their inflatable life preservers and then put them on. As they wait for the rescue squad, they calculate how much nitrogen is in each life preserver. They

    asked by cheri on February 10, 2013
  64. physics

    Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 27.0m/s as it leaves the hose nozzle. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the angle of

    asked by Tee on September 22, 2008
  65. Chemistry

    Please let me know how I'm doing with the following chemistry problems. I appreciate your imput. Here's problem 1: A sample of Helium gas occupies a volume of 29.4mL AT 18deg.celcius. (a)Would the volume of this gas sample be doubled at 36deg.celcius?

    asked by Cliff on November 24, 2010
  66. pre-calc

    A box with an open top is to be constructed by cutting equal-sized squares out of the corners of a 18 inch by 30 inch piece of cardboard and folding up the sides. a) Let w be the length of the sides of the cut out squares. Determine a function V that

    asked by moshie on February 8, 2015
  67. Calculus

    Let R be the region bounded by y=6sin((pi/2)x), y=6(x-2)^2, y=3x+3 containing the point (2,6). Find the area of R, find the volume of R rotated about the x-axis, find the volume of R rotated about the y-axis, and Suppose R is the base of a shape in which

    asked by Charmaine on October 27, 2012
  68. English

    1. water closet [Longman Dictionary] noun [ C usually singular ] uk ​ /ˈwɔː.tə ˌklɒz.ɪt/ us ​ /ˈwɑː.t̬ɚ ˌklɑː.zɪt/ [old-fashioned] a toilet 2. water closet [Cambridge Dictionary​ full form of WC: a toilet, or a room

    asked by rfvv on April 3, 2018
  69. Algebra 1

    The manager of a shopping mall was asked to rope off a rectangular section of the parking lot for an automobile show. The area roped off was 250 ft by 300 ft. Post were to be placed every 25 ft around the lot. How many posts were needed? The one question I

    asked by Alexandra on September 9, 2013
  70. ushistory

    the assembly line production of henry ford's model t automobile resulted in what? my answer: it resulted in development of a large interantional marekt for american automobiles but im not sure if it was a sharp decrese in railroad passenger traffic or a

    asked by Rick on November 28, 2009
  71. science

    Thermal energy is caused by motion of? 1. mixing water molecules contained in a beaker 2. molecules in soild liquid and gas phases 3. mixing molecules together 4. molecules that have reached equilibrium the density of an object with the volume of 60.0 mL

    asked by jj on May 2, 2016
  72. Math

    An aqaurium is 80cm long, 40cm wide, and 40cm high. What is its volume? I got 128,000cm3 One cubic centimeter (cm3) holds 1 milliliter of water. 1,000 cm3 hold 1 liter. How many mL will the tank in problem 6 hold? How many liters?

    asked by Jaycee on January 21, 2012
  73. i need help with science pls

    ]Most of the drinking water in a location comes from a river. A steel plant is to be built close to the river. It would provide jobs and facilities to many people in the location. The steel plant would use a huge amount of river water. This might cause

    asked by Oscar on April 13, 2016
  74. calculus

    When air expands adiabatically (without gaining or losing heat), its pressure and volume are related by the equation PV^1,4=C where C is a constant. Suppose that a a certain instant the volume is 520 cubic centimeters and the pressure is 99kPa and is

    asked by Ash on October 29, 2009
  75. Calculus

    The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

    asked by nan on March 10, 2016
  76. engineering

    any help is greatly appreciated. I am so hopeless now. Water tower problem. The pressure in each house is 250 kPa and the average pressure drop is 50kPa. What should the height of the water tower? Height of the water level in the tower. What is the

    asked by katy on September 28, 2015
  77. Geometry Help & Proofs

    The ratio of the volume of Cylinder A to the volume of Cylinder B is 1:5. Cylinder A is similar to Cylinder C with a scale factor of 1:2 and Cylinder B is similar to Cylinder D with a scale factor of 1:3. What is the ratio of the volume of Cylinder C to

    asked by Anonymous on May 14, 2014
  78. Physics 270-1 Applied

    A rock is thrown down with an initial speed of 30.0ft/s from a bridge to the water below. It takes 3.50s for the rock to hit the water. (a) Find the speed (in ft. /s) of the rock as it hits the water. (b) How high is the bridge above the water?

    asked by jason on May 8, 2014
  79. CHEM

    a mixture of 10cm3 of methane and 10cm3 of enthane was sparked with an excess of oxygen. after coolin to room temp, the residual gas was passed through aq KOH. what volume of gas was absorbed by the alkali ? Write the equations for CH4 + O2 and C2H6 + O2.

    asked by Pet on May 29, 2007
  80. AP Bio potato/osmosis lab

    If a potato core is allowed to dehydrate by sitting in open air, would the water potential of the potato cells decrease or increase? i think it decreases but i'm not sure. and if a plant cell has a lower water potential than its surroundings and if

    asked by lisa on October 25, 2006
  81. algebra

    At a crime scene, police officers find a murder victim in a tub full of warm water. A thermometer shows that the water temperature is 75 degrees F and the air temperature is 70 degrees F. It is known that most people fill a tub with water at 100 degrees F.

    asked by Andrea on December 12, 2012
  82. Can no one help?!

    1. Use cylindrical shells to compute the volume of the solid formed by revolving the region bounded by y= 2x and y = x^2 -3 about x= 6. 2. Find the volume of the solid formed by revolving the region bounded by y= e^x , y= e^-x, and y= 3 about y= 5. I'm

    asked by Mia on March 3, 2011
  83. Physics

    Olympic diver Matthew Mitcham springs upward from a diving board that is 3.00 m above the water. He enters the water at a 79.0 degree angle with respect to the water surface, at a speed of 9.01 m/s. Determine the magnitude of his initial velocity.

    asked by Rachel on June 20, 2015
  84. physics

    Olympic diver Matthew Mitcham springs upward from a diving board that is 3.20 m above the water. He enters the water at a 73.0 degree angle with respect to the water surface, at a speed of 9.36 m/s. Determine the magnitude of his initial velocity.

    asked by PLEASE HELP on September 16, 2014
  85. math

    The volume enclosed by a sphere of radius r is (4/3)πr^3. The surface area of the same sphere is 4πr^2. You may already have noticed that the volume is exactly (1/3)r times the surface area. Explain why this relationship should be expected. One way is to

    asked by maath on July 24, 2018
  86. math

    an open water tank with length 20 m and width 15 m holds 4800 cubic metres of water.calculate the total surface area of the part of the tank in contact with water

    asked by princess on January 26, 2016
  87. Physics

    A 123 g cube of ice at 0◦C is dropped into 1.9 kg of water that was originally at 81◦C. What is the final temperature of the water after after the ice melts? The latent heat of fusion of water is 3.33 × 105 J/kg . Answer in units of ◦C

    asked by Tiffany on January 30, 2013
  88. Physics

    A stream of water emerges horizontally from firehouse at velocity of 15.0 m/s. If the nozzle is 10.0 m above the ground, find a. the time required for the water to reach the ground b. the horizontal distance traveled by the water

    asked by Eclipse on July 22, 2017
  89. Physics

    A wooden cube of side 5cm floats in water 200cm^2 of its depth below the water surface and ats sides are vertical calculate the density of the wood in g/cm^3.(1) Density of water in 1g(m^-3).

    asked by Igbekele on February 26, 2012
  90. Physical Education help

    When diving into water, it is important to look before diving to avoid (blank) that could damage your nervous system. A. Deep water B. Underwater hazards C. Living creatures D. Water toys Is the answer B? Thanks

    asked by Anonymous on October 26, 2014
  91. chem 211

    If 100.0mL water of at 50.0C is added to 100.0 mL of water at 20.0C. What temperature would the mixture of water reach? Assume the system is perfectly sealed and no heat is lost to the calorimeter or to the outside environment. 2)

    asked by beti on November 5, 2013
  92. chem 101

    A one pound piece of iron was heated to 1000 °C and then quenched in a bucket containing one gallon of water at 25 °C. What was the temperature of the water after the iron and the water came to thermal equilibrium? correct answer is 37C

    asked by Anonymous on April 11, 2012
  93. Science HELP!

    When diving into water, it is important to look before diving to avoid (blank)damage your nervous system. A. Deep water B. Underwater hazards C. living creatures D. Water toys Is the answer B? Thanks

    asked by Anonymous on October 26, 2014
  94. Mathematics

    The height in metres of the water in a harbour is given approximately by the formula d=6+3cos30t, where t is the time in hours from. Find a) The height if the water at 9:45pm b) The highest and the lowest water level and occur

    asked by David on September 20, 2017
  95. 10th grade chemistry

    We're doing a lab report on the hardness of water, and one of the calculations is "The EDTA reacts with the hard water ions in a 1:1 mole ratio. Calculate the molarity of the ions present in 20 mL of water tested." How would you do this?

    asked by ceedub on March 8, 2009
  96. Geometry

    If a rotating water sprinkler is a set tto spray water out at a radius of 40 feet around a circular revolution of 120 degrees what is the area of the lawn that the water from the sprinkler would then cover

    asked by Anonymous on April 13, 2016
  97. Physics

    When a load of 0.97 106 N is placed on a battleship, the ship sinks only 3.0 cm in the water. Estimate the cross-sectional area of the ship at water level. (The density of sea water is 1.025 103 kg/m3.)

    asked by Lauren on December 13, 2012
  98. physics

    Given: latent heat of fusion of water 3.33x10^5 J/kg. A 147 g cube of ice at 0 degress C is dropped into 1.3 kg of water that was originally at 79 degrees C. What is the final temperature of the water after the ice melts.

    asked by Ericka on December 9, 2009
  99. Chemistry

    Glycerol is a nonvolatile water soluble material. It's density is 1.25g/ml. Predict the vapor pressure of a solution of 2.40E2 ml of glycerol, in 385ml of water, at the normal boiling pt of water.

    asked by Jonah on April 7, 2013
  100. science

    ms. janick's class wants to measure how quickly water evaporates. they measure the level of some water in a glass for 4 days and record the levels. which graph shows that the water evaporated over time?

    asked by Anonymous on October 17, 2018