1. physics

    When a 1150 kg space rocket lifts off of ground. How many joules of energy has been provided by its engine during the time in which it achieves a speed of 180 m/s.

    asked by Zach on February 8, 2012
  2. Managerial Economics

    Please explain the reasons why Harley Davidson cycle company would want copyrights on the word hog and for exclusive rights to its engine sound

    asked by Anonymous on August 27, 2009
  3. Maths

    Find the number of decibels of sound produced by a jet engine at a distance of 50 metres if the intensity is 10 watts per square metre.

    asked by Donna on February 16, 2014
  4. math

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.37 cross 10−5 watts/cm2

    asked by neal on June 5, 2014
  5. Physics

    A car travelling at 30m/s overcomes a frictional resistance of 100N while moving. Calculate the power developed by the engine.[1hp=0.75]

    asked by Justin on September 2, 2018
  6. algebra

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.54 cross 10−5 watts/cm2

    asked by samuel louijeune on February 8, 2014
  7. physics

    Assuming maximal power output, how long, in seconds, would it take a 1,535 kg car with a 128 hp engine to accelerate from 50 km/h to 102 km/h? (1 hp = 746 W)

    asked by Lydia on November 8, 2011
  8. algebra

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.67 cross 10−5watts/cm2

    asked by Anonymous on August 26, 2013
  9. algebra

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine,2.44 cross 10^(−5)watts/cm2.

    asked by Tierra on May 13, 2013
  10. Chemistry

    I had to perform an experiment for rate of reaction. The point of the experiment was to show how changes in reactant concentration, temperature, and catalyst presence can affect the rate of a reaction. The reaction that we studied was H2O2 + 2I^- + 2H^+ ->

    asked by Hannah on February 25, 2012
  11. English

    I forgot to include these other sentences. Are the alternatives possible? Thank you very much. 1) Machinery was mainly driven (powered?) by water. 2) The new inventions in cloth-making took place because the was a rise in population and consequently an

    asked by Franco on October 12, 2010
  12. Chemistry-DrBob222

    What is the final temperature and physical state if water when 47.50 kJ of energy is added to 15.0 g of ice at -10.0 C? Helpful information: Cs (ice) = 2.1 J/g C Heat of fusion (water) = 6.02 kJ/mol Cs (water) = 4.184 J/g C Heat of vaporization (water) =

    asked by Nevaeh on March 12, 2016
  13. College Algebra

    A merchant blends tea that sells for $5.45 a pound with tea that sells for $2.45 a pound to produce 80 lb of a mixture that sells for $3.95 a pound. How many pounds of each type of tea does the merchant use in the blend? lb (at $5.45/lb) lb (at $2.45/lb)

    asked by Jrich on August 26, 2011
  14. Algebra

    A merchant blends tea that sells for $5.00 a pound with tea that sells for $3.00 a pound to produce 80 lb of a mixture that sells for $3.75 a pound. How many pounds of each type of tea does the merchant use in the blend?

    asked by Faisal on February 22, 2016
  15. chemisrty

    as a system increases in volume it absorbs 52.5 j of energy in the form of heat form the surroundings. the piston is working against a pressure of 5.00 atm. The final volume of the system is 58,0 L. What is the initial volume of the system if the internal

    asked by Jay on November 16, 2010
  16. Chemistry HELP!!

    Can you identify a metal if you know its density? Explain Do you think that determining the volumes of metal samples by measuring their dimensions and calculating would be more r less accurate than determining volumes by water displacement? Explain. Would

    asked by Dave on August 29, 2006
  17. Chemistry

    Assume you begin with 60 g of water at 20 oC and 60 g of water at 80 oC. After adding the two portions of water into your calorimeter, you determine the temperature of the mixed portions of water to be 45 oC. What is the heat capacity of the calorimeter?

    asked by Alex on March 12, 2012
  18. Math

    The charges on a monthly water bill came to $0.86 per cubic meter of water used, plus a service charge of $4.49. Last month Jeremy's water bill came to $69.85, how many cubic meters of water had he used?

    asked by Erica on January 25, 2013
  19. chemistry

    How many grams of water can be cooled from 35^\circ {\rm C} to 16^\circ {\rm C} by the evaporation of 57{\rm g} of water? (The heat of vaporization of water in this temperature range is 2.4 {\rm kJ}/{\rm g}. The specific heat of water is 4.18 {\rm J}/{\rm

    asked by Anonymous on April 4, 2013
  20. Physic II

    A person tries to heat up her bath water by adding 5.0 L of water at 80 degrees celcious to 60 L of water at 30 degrees celcious. What is the final temperature of the water? Show work please !

    asked by hulune2 on April 8, 2014
  21. physics

    A rock is dropped from a bridge to the water below. It takes 2.4s to hit the water. Find the final speed of the rock when it hits the water. How high is the bridge above the water

    asked by tasha-please help#2 on January 17, 2012
  22. math

    the dimensions of trianguloar prism A andtriangular prism B are proportional. The volume of the Triangular Prism is 6,400 cubic feet. If the volume of Triangular prism B is 75% of the volume of Triangular Prism B. What is the volume of Trianguloar Prism B?

    asked by James Shotwell on January 4, 2013
  23. science

    Concentrated sulfuric acid (18.4 molar H2SO4) has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar, the solution has a density of 1.38 grams per milliliter and can be used as an electrolyte in lead storage batteries for

    asked by raksha on October 24, 2007
  24. Physics

    A cylinder contains the helium gas with a volume of 0.1 m3 at a pressure of 220 kPa. The gas is compressed to a volume of 0.02 m3. The process is adiabatic and the specific heat ratio of the gas is 1.66. Determine (a) the pressure in the cylinder after

    asked by Dia on December 18, 2011
  25. chemistry

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.8 of water upon warming from 25degree C to 50degree C . Assume that the water is initially saturated with nitrogen and

    asked by bf on January 25, 2010
  26. Algebra

    Chart with a month bill for water which is $35.00. Question is Lynne has a watering can that holds 16 cups of water, and she fills it half full. Then she waters her 15 plants so that each plant gets the same amount of water. How many cups of water will

    asked by Stephie on September 9, 2014
  27. Chem

    I need help I don't get this 1. Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, Pbutane, alone. To do this, consult a reference and record the partial pressure of the

    asked by |-/ on March 7, 2017
  28. Chemistry

    A student produced a volatile liquid experiment with the following results: Mass of flask, boiling water, foil cap, and unkown after cooling, g: 83.350 Mass of flask, boiling stone, and foil cap, g: 82.657 Water bath temperature: 95*C Barometric pressure:

    asked by Chelsea on October 27, 2011
  29. Maths

    A container in the shape of a right circular cone with vertex angle a right angle is partially filled with water. a) Suppose water is added at the rate of 3 cu.cm./sec. How fast is the water level rising when the height h = 2cm.? b) Suppose instead no

    asked by leone on August 9, 2012
  30. federal tax

    Carl bought a heavy-duty truck (5-year class recovery property) for his business service on April 30. The truck is not considered a passenger automobile for purposes of the listed property and luxury automobile limitations. The truck has a depreciable

    asked by bree on March 1, 2010
  31. Mat 116/algebra

    A cylinder has a radius of 5 in. If the volume of the cylinder is 250 ¦Ðr¡¼in¡½^3, what is the height of the cylinder? Volume cylinder is AreaBase*height where area of the base is PI*r^2 Volume=PI*r^2 * h solve for h.

    asked by Dee on May 14, 2007
  32. History

    Which statement best characterizes the effects of European colonization in New Mexico? A)Europeans eliminated all Native American influence in New Mexico. B)European colonization contributed to a unique blend of cultural elements. C)European colonization

    asked by Trish on August 22, 2015
  33. Physics

    The average coefficient of volume expansion for carbon tetrachloride is 5.81 10-4 (°C)-1. If a 43.0 gal steel container is filled completely with carbon tetrachloride when the temperature is 10.0°C, how much will spill over when the temperature rises to

    asked by Jamie on April 27, 2011
  34. math

    how much is 8 liters jug water he fills 9750 millimeters pitchers with water how much water is left?

    asked by rose on April 23, 2014
  35. chemistry-thermochemistry

    A student mixes 85.7 g of water at 68.0°C with 50.7 g of water at 24.5°C in an insulated flask. What is the final temperature of the combined water

    asked by james on October 5, 2008
  36. chemistry

    If you combine 360.0 mL of water at 25.00 °C and 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by anon on October 28, 2016
  37. chemistry

    If you combine 360.0 mL of water at 25.00 °C and 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by sam on October 28, 2016
  38. science

    Does the mass of water increase when a plastic water bottle filled to the brim with water is frozen?

    asked by Sandra on January 27, 2011
  39. Chemistry

    If you have 320.0 mL of water at 25.00 °C and add 110.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by Ryan on October 18, 2011
  40. Chemistry

    the specific heat of water is 4.184 j/g °c. How many grams of water at 85 C would have to be added to raise 1.00 kg of water from 25.0 C to 50.0 C? Please help I am not sure of where to start!

    asked by Anonymous on November 10, 2012
  41. chemistry

    A graduated cylinder contains 17.0 mL of water. What is the new water level after 31.6 g of silver metal with a density of 10.5 g/mL is submerged in the water

    asked by timmy on October 7, 2015
  42. science

    Infiltration is the process by which rainwater becomes; A. Saltwater B. River water C. Ground water D. Ocean water

    asked by someone on November 25, 2013
  43. Abby

    If you have 320.0 mL of water at 25.00 °C and add 140.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by Chemistry on December 5, 2013
  44. Chemistry

    If you have 290.0 mL of water at 25.00 °C and add 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by Harley on November 11, 2011
  45. Chemistry

    A student mixes 85.1 g of water at 69.6°C with 58.1 g of water at 22.0°C in an insulated flask. What is the final temperature of the combined water?

    asked by John on February 9, 2013
  46. math

    an aquarium holds 6 1/4 gallons of water. the water level has dropped to 4/5 of this amount. how much water should be filled?

    asked by veronica on October 20, 2010
  47. Chemistry

    What makes the strongest cation in water? Al Na Fe K Mg I know that the OH^- ions from water are enough for the Al(OH)3 and Fe(OH)3 precipitates to appear and we've been taught that K,Na compounds are soluble in water too. And Mg(OH)2 needs a higher OH^-

    asked by Josh on July 26, 2017
  48. Biology Lab Banana DNA

    We did a DNA extraction lab of a banana. I was wondering, what exactly is the purpose of using mushed bananas, and how was water used as well (we used the water after using soap and salt, but I can't understand what the water did)? Thanks.

    asked by LC on April 1, 2008
  49. physical chemisry

    Estimate the freezing point of 150 cm3 of water sweetened with 7.5g of sucrose (C12H11O22). (Kf for water is 1.86 K kg mol-1; density of water is 1gcm-3)

    asked by Anonymous on April 6, 2010
  50. chemistry

    when a 0.4-g almond sample is burned the heat gained by the water is 7525.4 J and the temperature of the water increased from 24 C to 58 C what was the mass of the water in grams? a. 50 b. 100 c. 45 d. 52.9

    asked by shannon on May 11, 2010
  51. Physics Science

    Mary mixes 5.00 lb of water at 200°F with 7.00 lb of water at 65.0°F. Find the final temperature of the mixture. -Specific Heat of water is 1.00 BTU/lbs°F

    asked by Ben on November 5, 2014
  52. CHEMISTRY

    Suppose 1400 J of heat energy are put into a sample of liquid water at 23°C, and the final temperature of the water is 78°C. How many grams of water are present?

    asked by Sarah on April 17, 2012
  53. science help

    How would planting trees most affect the water cycle? decrease in evaporation increase in transpiration movement of water to new locations water pollution is it b

    asked by Oscar on November 9, 2015
  54. Physics

    A puddle holds 150 g of water. If 0.50 g of water evaporates from the surface, what is the approximate temperature change of the remaining water? (Lv = 540 cal/g)

    asked by JJ on December 19, 2010
  55. PhysicsI

    A puddle holds 150 g of water. If 0.50 g of water evaporates from the surface, what is the approximate temperature change of the remaining water? (Lv = 540 cal/g)

    asked by Fred on July 24, 2014
  56. Physics - Method Of Mixtures

    Mary mixes 5.00 lb of water at 200°F with 7.00 lb of water at 65.0°F. Find the final temperature of the mixture. -Specific Heat of water is 1.00 BTU/lbs°F

    asked by Ben on November 5, 2014
  57. Chm

    8.08g of KNO3 were required to saturate 25g of distilled water at 20oC. Calculate the solubility of the solute in a) g/dm^3 of water b) mol/dm^3 of water

    asked by Ife on June 10, 2011
  58. Chemistry(Answer check)

    A 0.1052 g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 208.5 mL. (Calculate the molarity of Cu2+.) 0.1052g*63.546/6.022e23 did I set it up right?

    asked by Ashley on June 21, 2013
  59. CHEM

    A 3.5g sample of potassium chloride(KCl)is dissolved in 10mL of water.The resulting solution is the added to 60mL of a 0.5M CaCl2 soltion. Assuming that the volume are additive,calculate the molar concentration and %w/v of each ion present in final

    asked by RUBY on October 13, 2017
  60. Physics - Aristotle and his theory

    Aristotle beleived that wood was a combination of fire, water, and earth. Use his 4 element theory to explain why a wooden boat floats on water. His theory is hard for me to understand. The only thing I know is that the boat floats on the water because the

    asked by Anonymous on September 10, 2011
  61. physics

    Assume that 10 g of steam is added to 100 g of water initially at 19°C. The water is inside an aluminum cup of mass 35 g. The cup is inside a perfectly insulating calorimetric container that prevents heat flow from the outside environment. Find the final

    asked by bano on December 5, 2013
  62. physics

    1. Assume that 10 g of steam is added to 100 g of water initially at 19°C. The water is inside an aluminum cup of mass 35 g. The cup is inside a perfectly insulating calorimetric container that prevents heat flow from the outside environment. Find the

    asked by bano on December 5, 2013
  63. College Chemistry

    1. What is the change in internal energy (in J) of a system that absorbs 0.677 kJ of heat from its surroundings and has 0.438 kcal of work done on it? 2. A 30.5 g sample of an alloy at 94.0°C is placed into 48.7 g water at 20.3°C in an insulated coffee

    asked by Nevaeh on October 20, 2010
  64. Chemistry

    84cubic centimeters of hydrogen chloride gas measured at s.t.p is dissolved in water and titrated with 0.15M sodium hydroxide.What volume of sodium hydroxide solution is required for complete neutralization?

    asked by Doris on September 23, 2016
  65. Chemistry II

    What is the molar concentration of a solution produced by dissolving 1.234 g (NH4)2CrO4 in water and diluting to a total final volume of 300.0 ml? (mass of {NH4}2CrO4 is 152.03 g/mol).

    asked by Angela on September 4, 2013
  66. physics

    A wooden block with a volume of 29.59 cm3 is held under water. What is the buoyant force on the block (see sheet 19)? Indicate with a positive (negative) sign whether the force you calculate depends (does not depend) on the density of the wood.

    asked by cassie on November 15, 2011
  67. math

    Determine the volume of diluted nitric acid d= 1.11g/ml, 19% hn03. That can be prepared by diluting with water 50ml of conc. hn03 d=1.42g/ml, 69.8% The answer 183.68ml who help step by step

    asked by Fai on December 24, 2013
  68. chemistry

    If dissolving 2g of ionic salt causes 50ml of water in increase temp. by 15 degrees Celsius at constant pressure, what would be the change in temperature if 6g of the same ionic salt were used instead? Assume the volume of solution remains the same.

    asked by tommy on November 18, 2016
  69. chem

    A solution prepared by dissolving 20.2 mL of CH3OH in 100mL of water @ 25 celcius. The final volume of the solution is 118 mL. Calculate the % by mass. density CH3OH[0.782g/mL], H20[1g/mL] @ room temp.

    asked by susan on July 22, 2011
  70. chem

    A solution prepared by dissolving 20.2 mL of CH3OH in 100mL of water @ 25 celcius. The final volume of the solution is 118 mL. Calculate the % by mass. density CH3OH[0.782g/mL], H20[1g/mL] @ room temp.

    asked by rita on July 22, 2011
  71. Physics

    What is the difference in volume (due only to pressure changes, not temperature or other factors) between 1000 kg of water at the surface (assume 4 degrees C) of the ocean and the same mass at the deepest known depth, 8.00 km? (Mariand Trench; assume also

    asked by Kristin on November 6, 2007
  72. Calculus

    An inverted conical tank is being filled with water, but it is discovered that it is also leaking water at the same time. The tank is 6 meters high and its diameter at the top is 4 meters. The water is being added to the tank at a constant rate. Some of

    asked by Ryan on October 20, 2014
  73. math

    if the height is 3cm and the base of the area is 4cm 2 what is the volume? and is the lil 3 the sign for volume?

    asked by Anonymous on March 21, 2012
  74. chemistry( urgent)

    what do we assume about volume of the actual molecules themselves in a sample of gas, compared to the bulk volume overall?why?

    asked by alex on March 11, 2011
  75. chemistry

    A certain volume of a gas at 298k is heated such that its volume and pressure are now four times their original value.what is the new temperature?

    asked by Adams on January 24, 2016
  76. Physics (one more)

    A lead ball has a volume of 94.3 cm3 at 19.3°C. What is the change in volume when its temperature changes to 34.3°C? Someone on here has already answered this but it was wrong!

    asked by Kaitlyn on June 22, 2012
  77. Chemistry

    Calculate the volume of a gas @ 20 degrees C and 640 mm Hg if it's volume is 1500 mL when collected @ STP.

    asked by Jessica on November 15, 2012
  78. chemistry

    A certain volume of a gas at 298k is heated such that its volume and pressure are now four times their original value.what is the new temperature

    asked by Adams j on January 24, 2016
  79. Geometry

    how do you find the volume and surface area of a square pyramid and sphere when you are given only a volume of 1200?

    asked by Nicky on May 15, 2008
  80. Pre Chem

    A gas occupies a volume of exactly 500 mL at STP. What volume would it occupy at exactly 70°C and 400 mm of pressure?

    asked by Anonymous on April 21, 2014
  81. chemistry

    a sample of air has a volume of 140.0 mL a 67 degrees C. at what temperature would its volume be 50.0 mL at constant pressure/

    asked by Gion on April 26, 2008
  82. chemistry

    a sample of air has a volume of 140.0 mL at 67 degrees C. At what temperature will its volume be 50.0 mL at constant pressure?

    asked by Jamal on May 18, 2010
  83. Math

    The volume of a cylinder is 24pi cubic feet. What is the volume of a cone having same base and same height?

    asked by Juan on April 11, 2018
  84. Chemistry

    A 3.0 L volume of methane gas is cooled from 59.4°C to 30.0°C. If the pressure remains constant, what is the final volume (L)?

    asked by Linzy on March 25, 2013
  85. chemistry

    A certain volume of a gas at 298kelvin is heated such that its volume and pressure are now four times their original value.What is the new tewperature?

    asked by blessing on January 30, 2014
  86. utu secondary school papuanew guinea

    A given mass of air has a volume of 6.0l at 1 atom.what volume will it occupy at 190mm hg if the temperature does not change?

    asked by charlie on March 3, 2015
  87. Maths

    A cylinder has volume 12cm^3. What will be the volume of a cone with the same base area and perpendicular height?

    asked by annie on April 14, 2017
  88. Math

    Explain what happens to the volume of a prism when its dimensions are tripled. Answer: Is the volume going to be 9 times larger

    asked by Helen on February 24, 2016
  89. chemistry

    A sample of a gas in a ridge container at 30.0 c has a volume of 2.00L. If its temp increased to 40.0 C What will the new volume be?

    asked by levi on February 23, 2012
  90. Chem

    A sample of gas has a volume of 8.00 L at 20.0 degrees celcius and 700. torr. What will be it's volume at STP?

    asked by Jeni on November 11, 2010
  91. Chemistry

    A sample of gas has a volume of 6.20 L at 23 degrees celsius at a pressure of 1.90 atm. What is its volume at STP?

    asked by ASAP!! on April 9, 2014
  92. geometry

    a snow globe has a diameter of 6 inches.find its exact volume.then approximate its volume using 3.14 for [pi]

    asked by Anonymous on April 5, 2010
  93. Chemistry

    Determine the volume of nitrogen gas at a pressure of 3.00 atm if it had a volume of 400.0 mL at STP.

    asked by Maria on April 30, 2012
  94. chemistry

    A 1.00 L volume of 0.609 M HNO3 is condensed to a volume of 0.750 L, calculate the molarity (M) of H+ in the new solution

    asked by eng on March 28, 2010
  95. chemistry

    A given mass of gas occupies a volume of 449 mL at 25°C and 740 mmHg. What will be the new volume at STP?

    asked by kelly on October 28, 2010
  96. Science

    how is the electricity in our light bublbs formed. Ex. buring coal?????? Electricity is attracted to the wires of the light so it is attracted to the bulb Huh? Electricity is generated by spinning the rotor inside a generator. the rotor (called this

    asked by Gina on December 19, 2006
  97. science

    1. Which of the following is a reason why a person might want to wear snowshoes if walking a distance in deep snow? (1 point) snowshoes spread the person’s weight out snowshoes reduce the amount of pressure on a given spot snowshoes keep the person from

    asked by pls help on April 24, 2017
  98. English

    Can you please check the tenses (and word choice) in the following sentences, please? Thank you very much indeed. 1) In Chapter 2 the Lilliputians are on Gulliver’s body and are inspecting his clothes. 2) They find a very large piece of coarse cloth in

    asked by Franco on April 14, 2010
  99. physics

    An automobile traveling along a straight road increases its speed from 89 ft/s to 104 ft/s in 180 ft. If the acceleration is constant, how much time elapses while the auto moves the 180 ft? Answer in units of s

    asked by Confused Student on October 5, 2014
  100. physics

    A 1000kg automobile is moving along a straight highway at 10m/s. another car with mass 2000kg and moving with a velocity in the same direction 20m/s at 30m ahead of the first. find the momentum

    asked by Anonymous on November 5, 2011