1. Algebra

    Two planes are 4,800 miles apart, and their speeds differ by 200 mph. They travel toward each other and meet in four hours. Find the speed of the slower plane. HELP!!!!!

    asked by Carol on October 6, 2009
  2. Physics

    A bullet of mass 200 grams is forced with work speed of 400 m/s of it is stopped in 100 m, Find: a.) KE b.) Force needed to stop it

    asked by Chantal on April 27, 2016
  3. physics

    A heavy freight train has a mass of 11800 metric tons. If the locomotive can pull with a force of 691000 N, how long does it take to increase it's speed from 0 to 70.3 km/h?

    asked by Jackson on October 27, 2010
  4. Science

    1. The line on the graph below represents an object that is: A: Moving at a constant speed B: Increasing its speed C: Decreasing it's speed D: Not moving at all 2. To determine the acceleration of an object moving in a straight line, you must calculate the

    asked by Reeces on February 23, 2017
  5. Chemistry

    When a chemical cold pack is activated, a chemical reaction occurs that causes the pack to feel cold. - Describe the transfer of energy betwen a cold pack and the air around it.

    asked by Anonymous on September 18, 2010
  6. Physics-Trajectory

    A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s. What is the particle's speed at t=0s ? What is the particle's speed at t=5.0s ? Express your answer using two significant figures. What is the particle's

    asked by Eric on September 11, 2015
  7. statistics

    Give examples of nominal, ordinal, interval. and ratio data. Then, convert your ratio data example into interval, ordinal, and nominal scales. Measurement Scales Practice 1. Indicate the first letter (N, O, I, R) of the highest possible scale for each of

    asked by Lynn on June 2, 2013
  8. science

    1a)A block of mass=100kg is tied to a donkey that moves with constant acceleration of 20cm/s^2 up a 30 degree incline. What is the force with which the donkey pulls on the block parallel to the incline? the coefficient of kinetic friction between the

    asked by Anonymous on May 5, 2010
  9. CHEMISTRY> HELP QUICK! pls

    1. The rate of a chemical reaction may be defined as: a) The speed at which a molecule travels from point A to point B. b) The change in concentration of reactants or products per unit time. c) The change in concentration of reactant divided by change in

    asked by Lucinda on August 28, 2010
  10. physics

    7. An airplane has a gun that fires bullets straight ahead at the speed of 600 miles per hour when tested on the ground while the plane is stationary. The plane takes off and flies east at 600 miles per hour. Explain whether each of the following is

    asked by allexelle on June 24, 2015
  11. Physics

    1. A gold atom has a mass of 3.287 • 10-25 kg and is at rest. It emits an alpha particle that has a mass of 6.646 • 10-27 kg. In this process, the gold atom is transformed into an iridium isotope. The alpha particle has a speed of 3.40 • 106 m/s. A.

    asked by Riley on November 14, 2013
  12. Physics

    Q11.The table below shows how the braking distance x for a car depends on its initial speed u. | u / ms-1 | 5 | 10 | 20 | 40 | | X / M | 2 | 8 | 32 | 128 | The relationship between x and u is: doubling speed increases distance by a factor of 4. i)The

    asked by cylinder on December 7, 2017
  13. science

    Lamont has a dark container. He knows that the container has a mass of 2.0 g when it is empty. He cannot see inside the container. However, he is able to use a balance to determine that the container has a mass of 2.7 g. What can Lamont conclude about the

    asked by Nour on July 27, 2015
  14. sew

    6. You're repairing an armhole seam in a turtleneck used primarily for skiing. The stitching has come loose because of the extra arm movement. What type of hand stitch do you use? A. Backstitch B. Slipstitch C. Running stitch D. Blind stitch 7. If your

    asked by izzy on April 20, 2010
  15. SCI

    What makes up a habitat, and what do habitats provide to organisms? What is in the panda’s habitat that helps it to survive? What process helps an organism break down nutrients from its food in order to gain energy? What do you think will happen if a

    asked by HELP!!! on September 26, 2018
  16. Chemistry

    Hi, This is one of my chem hw problems. Does anyone have links to websites that might help me solve this..or equations? It sounds like there are two parts to the question but I'm not sure. Volts and Joules? 1. Electrons are used to determine the structure

    asked by Anne on October 27, 2008
  17. physics

    Initially, both metal spheres are neutral. In a charging process, 1 × 1013 electrons are removed from one metal sphere and placed on a second sphere. Then the electrical poten- tial energy associated with the two spheres is found to be −0.061 J . The

    asked by Tj on February 16, 2010
  18. Physics

    A person makes a quantity of iced tea by mixing 500g of hot tea(c=4190J/(Kg.k) with an equal mass of ice(T=0c, L=333KJ/Kg). assume that mixture has negligible energy exchange with environment. If tea's initial temperature is 90c, then what is the

    asked by sid on May 26, 2009
  19. Physics Energy and Work Done

    A 390-N child is in a swing that is attached to a pair of ropes 1.9 m long. Find the gravitational potential energy (in JOULES) of the child–Earth system relative to the child's lowest position at the following times. A) when the ropes are horizontal B)

    asked by Mofied on November 1, 2011
  20. chemistry

    true or false Entropy always tend to favor mixing Mixing result in positive change in entropy Entropy allows endothermic processes to be spontaneous Pure liquids don't have entropy Addition of salt to water increases entropy Entropy is the measure of

    asked by Jazz on May 6, 2015
  21. chemistry

    Compound 1 (Figure 1 below) is a naturally occurring compound produced within the human body. It is carried in the bloodstream and stored in the muscles to supply energy for muscle contraction during activity. A) B) (H2N) CH3 ( O \ l // C - N - CH2 - C //

    asked by Anonymous student on January 25, 2011
  22. International business

    You are the chief executive officer of a multinational’s subsidiary in a developing host country. The subsidiary has been in business for about eight years, making electric motors for the host country’s domestic market, with mediocre financial results.

    asked by Tracy on May 29, 2007
  23. Physics

    You are riding on a flatbed truck moving at 50 kilometers per hour. You have two identical guns, one aimed forward and one aimed backward, and you fire them at the same time. According to an observer in the ground, 1. the backward bullet appears to move

    asked by Neha on October 27, 2011
  24. Physics

    A 2.5 kg block sits on an inclined plane with a 30 degree inclination. A light cord attached to the block passes up over a light frictionless pulley at the top of the plane and is tied to a second 2.5 kg mass freely hanging vertically. The coefficients of

    asked by Margaret on October 11, 2013
  25. Re: PHYSICS

    "Relative" is an important word. Block L of mass mL = 1.90 kg and block R of mass mR = 0.500 kg are held in place with a compressed spring between them. When the blocks are released, the spring sends them sliding across a frictionless floor. (The spring

    asked by COFFEE on February 27, 2007
  26. Ela

    1) tank 50 deep 2)discharge pump will empty tank at 250 gallons per minit 3)tank will at 100 gallons per minit 4)2-floats will contor (m1) to fill tank set at 25feet 42feet 5)a float is set at 10feet for shut off for discharge pump 6)install pressure

    asked by Anonymous on October 16, 2016
  27. Physics. Help Please

    Gabriele enters an east-w straight bike path at the 3.0-km mark and rides w at a constant speed of 8.0 m/s. At the same time, Xena rides east from the1.0-km mark at a constant speed of 6.0 m/s. 1. Write function x(t) that describe the position of Gabriele

    asked by Matt on September 11, 2015
  28. Physics

    Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^-15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How

    asked by Jezrell on July 3, 2012
  29. phyis

    a 5 gram rubber ball is released from a height of 7 meter above flat surface on the moon. gravitational acceleration on the moon is 1.62 meters per second squared. assume that no energy is lost from frictional drag. what is the velocity, in units of meters

    asked by ahmed on February 17, 2016
  30. College Physics

    You are on vacation in San Francisco and decide to take a cable car to see the city. A 6100-kg cable car goes 410 m up a hill inclined 16 ∘ above the horizontal. The system is the car and Earth. Determine the change in the total energy of the system when

    asked by Natalie on October 15, 2018
  31. physics

    A slab of copper of thickness b = 1.566 mm is thrust into a parallel-plate capacitor of C = 4.00×10-11 F of gap d = 10.0 mm, as shown in the figure; it is centered exactly halfway between the plates. If a charge q = 3.00×10-6 C is maintained on the

    asked by Mike on February 18, 2011
  32. science

    Calculate the work done in each of the following situations. (a) A horse pulls a wagon with a force of 1200 N and moves it 15 m. (b) A cable lifts an elevator 16 m by using a cable with a tension force of 2500 N. -How much work is required to lift a 35-kg

    asked by james on January 18, 2017
  33. Chemistry

    1. The temperature of two substances with the same mass increases by 20 degrees Celsius. Which absorbs the most energy, the substance with the higher or lower specific heat? Explain 2. The human body is approximately 60% water. Explain how this high

    asked by Tiffany on October 21, 2014
  34. physics

    A half-cup of ice cream contains about 200 food Calories. How much power can be produced if the energy in a cup of ice cream is expended over a period of 10 minutes (600 seconds)? Each food Calorie is equal to 4,184 joules. Write your answer in watts and

    asked by juan on December 7, 2016
  35. chemistry

    in one experient, a student placed 50.0ml of 1.00molar Hcl at 25.5celsius in a coffee-cup calorimeter. to this was added 50.0ml of 1.00molar NaoH solution also at 25.5celsius. the mixture was stirred, and the temperature quickly increase to a maximum of

    asked by mike on November 16, 2009
  36. Chemistry

    1. The temperature of two substances with the same mass increases by 20 degrees Celsius. Which absorbs the most energy, the substance with the higher or lower specific heat? Explain 2. The human body is approximately 60% water. Explain how this high

    asked by Stephanie on October 21, 2014
  37. physics

    Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^-15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How

    asked by Jezrell on July 3, 2012
  38. Physics

    Suppose that a 200g mass (0.20kg) is oscillating at the end of a spring upon a horizontal surface that is essentially friction-free. The spring can be both stretched and compressed and have a spring constant of 240N/m. It was originally stretched a

    asked by Thomas on March 13, 2012
  39. Social Studies

    How has the United Kingdom reduced air pollution? Select all that apply.(2 points) 1. It has developed new technologies to reduce pollution. 2. It has eliminated all use of fossil fuels. 3. It has eliminated all vehicle emissions. 4. It has invested in

    asked by Hey😱 on April 7, 2019
  40. Health

    Why do people say that we should have a big breakfast and a small dinner? Thank you for using the Jiskha Homework Help Forum. Think about your car and filling it up with gasoline, etc. before you take a long trip. You need energy to run on as you begin

    asked by Sammy on February 4, 2007
  41. physics

    A regional airline flight consists of two legs with an intermediate stop. The airplane flies 380 due north from airport A to airport B. From there, it flies 260 due east to its final destination at airport C. Part A What is the magnitude of the plane’s

    asked by sammy on September 29, 2012
  42. Physics

    A box of books weighing 303 N moves with a constant velocity across the floor when it is pushed with a force of 400 N exerted down-ward at an angle of 38.6 degrees below the horizontal. Find ìk between the box and the floor. Well I know that I have to use

    asked by Neha on October 13, 2011
  43. algebra

    A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40cm wide rolls that are cut to fit between the rafters in the attic. If the roof is 6m from peak to eave and the attic space is 2cm high at the

    asked by Brandy on November 5, 2010
  44. chem

    HOw much energy is required to heat 36.0g H2O from a liquid at 65C to a gas at 115C? The following physical data may be uselful. Hvap=40.7kJ/mol C liquid=4.18 C gas=2.01 C solid= 2.09 T melting=0 C T boiling=100 C The answers about 87.7 kJ However I'm not

    asked by natash on May 11, 2008
  45. physics.

    A car travels forward with constant velocity. It goes over a small stone, which gets stuck in the groove of a tire. The initial acceleration of the stone, as it leaves the surface of the road is, a)vertically up b)horizontally forward c)horizontally

    asked by me on December 28, 2006
  46. Physics

    Someone posted the question below, stating that they knew the answer to part A but needed help with part B. Well even with the answer for A, I can't figure it out! Can you take a step back from the question below to show me the steps for solving part A?

    asked by Anna on October 14, 2008
  47. physics

    Which of the following statements about a system in resonance is true A.The energy of the system is always increasing. B.The greater the damping the larger the amplitude of the oscillations C.The driving force is always in the direction of the velocity.

    asked by Paige on April 16, 2014
  48. physics

    Two particles each with charge +2.68 µC are located on the x axis. One is at x = 1.00 m, and the other is at x = −1.00 m. (a) Determine the electric potential on the y axis at y = 0.660 m. (b) Calculate the change in electric potential energy of the

    asked by sarah on January 22, 2012
  49. chemisty

    calculate the heat energy released when 25.8 g of liquid mercury at 25 C is converted to solid mercury at its melting point. Constants for mercury at 1 atm: heat capacity of Hg-->28.0 melting point-->234.32 K enthalpy of fusion-->2.29 kj/mol

    asked by Jill on June 27, 2013
  50. Physics

    A 50-kg satellite circles the Earth in an orbit with a period of 120 min. What minimum energy is required to change the orbit to another circular orbit with a period of 180 min? (Earth: radius = 6.4  106 m, mass = 6.0  1024 kg)

    asked by Annie on November 18, 2012
  51. please help me, physics

    Five moles of a monatomic ideal gas expand adiabatically, and its temperature decreases from 410 to 200 K. (a) What is the work done by (or done to) the gas? Include the algebraic sign. J (b) What is the change in the internal energy of the gas? Include

    asked by leah on December 10, 2010
  52. physics

    The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.90 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2. How much energy does this wave carry through

    asked by jay on March 27, 2012
  53. Physics

    Three moles of a monatomic ideal gas expand adiabatically, and its temperature decreases from 430 to 160 K. (a) What is the work done by (or done to) the gas? Include the algebraic sign. J (b) What is the change in the internal energy of the gas? Include

    asked by Tasha on April 20, 2008
  54. Physics

    Three moles of a monatomic ideal gas expand adiabatically, and its temperature decreases from 430 to 160 K. (a) What is the work done by (or done to) the gas? Include the algebraic sign. J (b) What is the change in the internal energy of the gas? Include

    asked by Ron on April 19, 2008
  55. physics

    The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.90 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2. How much energy does this wave carry through

    asked by sarah on March 26, 2012
  56. Physics

    The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.7 × 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.23 m2. How much energy does this wave carry

    asked by Anonymous on March 26, 2013
  57. CHEM HELP ASAP!

    Calculate the heat energy released when 29.7 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm: Heat capacity of Hg (l) 28.0 J/Mol*K, Melting pt 234.32 k, and enthalpy of fusion 2.29 kg/mol

    asked by Jordan on September 11, 2012
  58. physics

    Two point charges each of magnitude 2.14 µC are located on the x axis. One is at x = 1.00 m and the other is at x = -1.00 m. (a) Determine the electric potential on the y axis at y = 0.620 m. kV (b) Calculate the change in electric potential energy of the

    asked by Anonymous on February 6, 2012
  59. physics

    The electron in a hydrogen atom with an energy of -0.544 eV is in a subshell with 18 states. What is the principal quantum number, n, for this atom? What is the maximum possible orbital angular momentum this atom can have? Is the number of states in the

    asked by jazz on April 12, 2012
  60. Physics

    A particle of mass m1 experiences a perfectly elastic collision with a particle of mass m2 at rest. What fraction of the incident energy does the incident particle lose if a) it recoils at right angle to the original direction and b) the collision is

    asked by Cosmin on December 27, 2015
  61. PHYSICS

    (a) What is the electric potential a distance of 2.3 10-15 m away from a proton? Answer for this part is :626000 (b) What is the electric potential energy of a system that consists of two protons 2.3 10-15 m apart-as might occur inside a typical nucleus?

    asked by SHUBHANGI on February 24, 2010
  62. Physics-Gravitational Potential Energy

    A satellite is given a boost of 540 MJ of energy to move it from its initial orbit at an altitude of 150 km to a higher altitude orbit. If the satellite has a mass of 1.16 ✕ 103 kg, what is the new altitude it reaches? Take the mass of the Earth to be

    asked by Dan on April 1, 2014
  63. Physics

    A 9.6-m-long elastic band is used to launch a toy glider. Once stretched to a length of 38 m, the band releases 1.7 J of elastic potential energy when you let it contract 0.071 m. What forward force is the band exerting on the toy glider?

    asked by on March 25, 2013
  64. Physics

    A car with a mass of 100 kg, with initial v = 1 m/s, has 60 Joules of energy added for 50 m. What is the final velocty? I'm using KE = 1/2 mv^2 to find initial KE. Then add 600 J to this for the final KE. Thus, W = KFf - KEi; KEf = W + KEi and KEf =

    asked by Jack on January 17, 2010
  65. science

    A 51-g piece of ice at 0 C is added to a sample of water at 7-C all of the ice melts and the temp of the water decreases to 0 .If you used the 8200 Khan you expand in energy in one day to heat 47000g of water at 27-C what would be the rise in temp? What

    asked by tabitha on June 15, 2012
  66. chem

    Each beta particle has an energy of 2.51 10-14 J, and 7.5% of the radiation is absorbed by the person. Assuming that the absorbed radiation is spread over the person's entire body, calculate the absorbed dose in rads and in grays i got 3.27e-5 for grays

    asked by hannah on September 11, 2012
  67. Chemistry

    A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 69.8 kJ of heat. Before the reaction, the volume of the system was 8.80 L . After the reaction, the volume of the system was 2.80 L . Calculate the total internal energy change,

    asked by Brittany on March 5, 2012
  68. Physics

    A 9.6-m-long elastic band is used to launch a toy glider. Once stretched to a length of 38 m, the band releases 1.7 J of elastic potential energy when you let it contract 0.071 m. What forward force is the band exerting on the toy glider?

    asked by on March 25, 2013
  69. Physics

    One gram of water changes from liquid to solid at a constant pressure of 1.00 atm and a constant temperature of 0°C. In the process, the volume changes from 0.60 cm3 to 1.14 cm3. Find the work done on the water? Find the change in the internal energy of

    asked by Nate on September 29, 2010
  70. Chem

    41. How much heat energy must you use to raise the temperature of 100 grams of water from 60C to 70C. Show your calculations. 42. You have a pot of 100C liquid water. If you add heat to the water, will the temperature start to raise at once? why or why

    asked by Sierra on September 15, 2014
  71. science

    Assuming that radiation with a wavelength = 15.0 cm is used, that all the energy is converted to heat, and that 4.184 J is needed to raise the temperature of 1.00 g of water by 1.00 degree celcius, how many photons are necessary to raise the temperature of

    asked by Breanna on July 22, 2011
  72. Science(Magnets)

    Should be easy, this. The two south pole ends of two magnets are touching. Which of the following can be concluded? A. No work was required by an outside force. B. The magnets are naturally attracted to each other. C. Work was required by an outside force.

    asked by dddd47906 on September 20, 2014
  73. physics

    A 0.07 kg toy is made up of a spring of constant 375 N/m. When you place the toy on the floor, cock the spring 7 cm and release it, the toy jumps upwards. What is in Joules the mechanical energy of the toy when sitting on the floor with a cocked spring?

    asked by hannah on September 16, 2011
  74. phys 2

    Two capacitors are identical, except that one is filled with a dielectric ( = 4.50). The empty capacitor is connected to a 12.0 Volt battery. What must be the potential difference across the plates of the capacitor filled with a dielectric so that it

    asked by ann on February 4, 2010
  75. English

    Can you please check this sentence for me, please? Thank you for your invaluable help. 1) I like this singer for his determination and energy transmitted (?) during his concerts. In spite of his illness, which affected the last years of his life, he

    asked by Franco on May 23, 2010
  76. Science help

    Im trying to finish my study guide so i can study this weekend but i have more problems like this and i don't have a clue of what they mean By switching from fossil fuels to solar,wind,hydroelectric,and other renewable sources of energy,humans can _____

    asked by Matt on January 10, 2014
  77. Science

    14.If a forest ecosystem is removed through clear-cutting, many species of organisms that lived in that ecosystem disappear. Their loss is due to ________________________. 15.When fossil fuels are burned, they produce ________________, the main greenhouse

    asked by Peter on January 5, 2014
  78. science

    14.If a forest ecosystem is removed through clear-cutting, many species of organisms that lived in that ecosystem disappear. Their loss is due to ________________________. 15.When fossil fuels are burned, they produce ________________, the main greenhouse

    asked by shynice on December 15, 2015
  79. Physics

    A 6.80 x 10^4 kg space shuttle moving at 7.90 x 10^4 m/s reenters the earth's atmosphere 80.0 km above the earth's surface. What is the shuttle's total mechanical energy with respect to earth's surface? I know the answer is E= 2.173 x 10^12J But I don't

    asked by Danny on January 27, 2016
  80. Physics

    What is stimulated emission? a. the process of distinguishing between sources of electromagnetic waves. b. the process of reducing mechanical waves' energy. c. the process of amplifying sound waves. d. producing move light waves which are coherent with an

    asked by Anonymous on March 9, 2017
  81. Health

    Obesity can cause a person to develop what type of conditions? A. Head, back, and neck pains B. Increased energy and reduced stress C. Low blood pressure and type I diabetes D. High blood pressure and Type 2 diabetes A?

    asked by Sam on August 30, 2012
  82. Chemistry

    DrBob222, HELP! Calculate the heat energy released when 29.7 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm: Heat capacity of Hg (l) 28.0 J/Mol*K, Melting pt 234.32 k, and enthalpy of

    asked by Jordan on September 11, 2012
  83. Thermodynamics

    I am doing a lab and there is one question I can't get. We have the enthalpy of fusion of crystalline polyeythlene, mass, onset temperature and energy required for a phase change of both low density polyethylene and high density polyethylene. They as to

    asked by Tracy on September 23, 2007
  84. AP English 11

    I have to write a paper for english, i keep getting bad grades and i use the paper rater sight always to make sure i do my best. it shows i get a 95 and my teacher gives me 30-20 points less and i don't under stand what im doing wrong. i need help on my

    asked by Stephanie on February 18, 2013
  85. Physics - Potential difference (check + help)

    A pair of horizontal plates are situated in a vacuum and separated by a distance of 1.8cm. What potential energy would need to be connected across the plates in order to hold a single electron suspended at rest between them? Ans: I used the formula (qv)/d

    asked by Anonymous on October 13, 2010
  86. AP English 11

    I have to write a paper for english, i keep getting bad grades and i use the paper rater sight always to make sure i do my best. it shows i get a 95 and my teacher gives me 30-20 points less and i don't under stand what im doing wrong. i need help on my

    asked by Stephanie on February 17, 2013
  87. Thermodynamics

    I am doing a lab and there is one question I can't get. We have the enthalpy of fusion of crystalline polyeythlene, mass, onset temperature and energy required for a phase change of both low density polyethylene and high density polyethylene. They as to

    asked by Tracy on September 24, 2007
  88. chemistry

    THE WATTAGE OF AN APPLIANCE INDICATES THE AVERAGE POWER CONSUMPTION IN WATTS(W),WHERE 1W =1J/S WHAT IS THE DIFFERENCE IN THE NUMBER OF KJ OF ENERGY CONSUMED PER MONTH BETWEEN A REFFIGERATION UNIT THAT CONSUMES 625 W AND ONE THAT CONSUMES 855W? IF

    asked by lucy on September 21, 2011
  89. Physics

    Please help me with this problem. The standard source for radiation therapy was radioactive 60Co which decays with a halflife of 5.27y, into an excited nuclear state of 60Ni. That nickel isotope then immediately emits two gamma ray photos wach with energy

    asked by Velaria on November 20, 2008
  90. Grammar

    Circle the nouns that can be used with the verbs on the right . Engine-consumption-dependence (reduce) Solution-dependence-alternative (find) Resources-technology-stocks(deplete) Quantity-problems-question(solve) Energy-crisis-shortage (face)

    asked by Maryam on June 3, 2013
  91. quantum chemistry or physics

    How can I solve the following exercise: Use perturbation theory to calculate the energy levels of a particle in a box with a cosine function botto. Let the box extend from x=0 to x=a and let the perturbing potential be H' = V0[1+cos(2*Pi*m*x/a)]. This

    asked by Juan Manuek on June 16, 2011
  92. SAT Essay

    Assignment: Can knowledge be a burden rather than a benefit? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experiences, or observations

    asked by Sanya on November 2, 2012
  93. SAT Essay

    Assignment: Can knowledge be a burden rather than a benefit? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experiences, or observations

    asked by Sanya on November 3, 2012
  94. Chemistry

    Please help me! I do not know what to do. 500.0 g ethyl alcohol at 25°C (C = 2.46 J/g x °C) absorbs 74.0 J of heat energy. What is the final temperature? What is the specific heat constant if 621 g of Metal A raises the temperature of 500.0 g of water by

    asked by Kate on September 25, 2014
  95. Physics

    In doing a load of clothes, a clothes dryer uses 16 A of current at 240 V for 45 min. A personal computer, in contrast, uses 2.7 A of current at 120 V. With the energy used by the clothes dryer, how long (in hours) could you use this computer to surf the

    asked by Orla on February 13, 2013
  96. chemistry

    A runner eats granola bars for energy on her 100.0 mile run. Each bar contains 250.1 calories. She burns 96.15 calories per km that she runs. How many granola bars does she need to equal the number of calories that she burns?

    asked by Anonymous on October 20, 2015
  97. Physics

    A ball is dropped from 27.0 feet above the ground. Using energy considerations only, what is the velocity of the ball prior to it hitting the ground? If the ball is thrown back up to a ledge 15m above the groud, what would be the velocity as it reaches the

    asked by Hannah on February 25, 2012
  98. chem

    What will be the result of a reaction if its enthalpy change is positive, its entropy change is negative and Gibbs free energy is positive? A. Never spontaneous B. Nonspontaneous, if the temperature is low C. Spontaneous, if the temperature is high D.

    asked by Laura on August 19, 2016
  99. 8th grade Physics

    Explain whether the photons emitted by a bright light bulb are more energetic than those emitted by a dim light bulb of the same color. How does the color of the light bulbs determine the amount of energy of the electromagnetic waves?

    asked by Renee on April 27, 2010
  100. chemistry

    calculate the heat energy required to raise the temperature of a 500. gram iron pipe from 25 degress celcius to 100 degrees celcius. the specific heat for iron is .45 J/g degrees celcius

    asked by andrea on May 12, 2013

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  24. 24
  25. 25
  26. 26
  27. 27
  28. 28
  29. 29
  30. 30
  31. 31
  32. 32
  33. 33
  34. 34
  35. 35
  36. 36
  37. 37
  38. 38
  39. 39
  40. 40
  41. 41
  42. 42
  43. 43
  44. 44
  45. 45
  46. 46
  47. 47
  48. 48
  49. 49
  50. 50
  51. 51
  52. 52
  53. 53
  54. 54
  55. 55
  56. 56
  57. 57
  58. 58
  59. 59
  60. 60
  61. 61
  62. 62
  63. 63
  64. 64
  65. 65
  66. 66
  67. 67
  68. 68
  69. 69
  70. 70
  71. 71
  72. 72
  73. 73
  74. 74
  75. 75
  76. 76
  77. 77
  78. 78
  79. 79
  80. 80
  81. 81
  82. 82
  83. 83
  84. 84
  85. 85
  86. 86
  87. 87
  88. 88
  89. 89
  90. 90
  91. 91
  92. 92
  93. 93
  94. 94
  95. 95
  96. 96
  97. 97
  98. 98
  99. 99
  100. 100
  101. 101
  102. 102
  103. 103
  104. 104
  105. 105
  106. 106
  107. 107
  108. 108
  109. 109
  110. 110
  111. 111
  112. 112
  113. 113
  114. 114
  115. 115
  116. 116
  117. 117
  118. 118
  119. 119
  120. 120
  121. 121
  122. 122
  123. 123
  124. 124
  125. 125
  126. 126
  127. 127
  128. 128
  129. 129
  130. 130
  131. 131
  132. 132
  133. 133
  134. 134
  135. 135
  136. 136
  137. 137
  138. 138
  139. 139
  140. 140
  141. 141
  142. 142
  143. 143
  144. 144
  145. 145
  146. 146
  147. 147
  148. 148
  149. 149
  150. 150
  151. 151
  152. 152
  153. 153
  154. 154
  155. 155
  156. 156
  157. 157
  158. 158
  159. 159
  160. 160
  161. 161
  162. 162
  163. 163
  164. 164
  165. 165
  166. 166
  167. 167
  168. 168
  169. 169
  170. 170
  171. 171
  172. 172
  173. 173
  174. 174
  175. 175
  176. 176
  177. 177
  178. 178
  179. 179
  180. 180
  181. 181
  182. 182
  183. 183
  184. 184
  185. 185
  186. 186
  187. 187
  188. 188
  189. 189
  190. 190
  191. 191
  192. 192
  193. 193
  194. 194
  195. 195
  196. 196
  197. 197
  198. 198
  199. 199
  200. 200
  201. 201
  202. 202
  203. 203
  204. 204
  205. 205
  206. 206
  207. 207
  208. 208
  209. 209
  210. 210
  211. 211
  212. 212
  213. 213
  214. 214
  215. 215
  216. 216
  217. 217
  218. 218
  219. 219
  220. 220
  221. 221
  222. 222
  223. 223
  224. 224
  225. 225
  226. 226
  227. 227
  228. 228
  229. 229
  230. 230
  231. 231
  232. 232
  233. 233
  234. 234
  235. 235
  236. 236
  237. 237
  238. 238
  239. 239
  240. 240
  241. 241
  242. 242
  243. 243
  244. 244
  245. 245
  246. 246
  247. 247
  248. 248
  249. 249
  250. 250
  251. 251
  252. 252
  253. 253
  254. 254
  255. 255
  256. 256
  257. 257
  258. 258
  259. 259
  260. 260
  261. 261
  262. 262
  263. 263
  264. 264
  265. 265
  266. 266
  267. 267
  268. 268
  269. 269
  270. 270
  271. 271
  272. 272
  273. 273
  274. 274
  275. 275
  276. 276
  277. 277
  278. 278
  279. 279
  280. 280
  281. 281
  282. 282
  283. 283
  284. 284
  285. 285
  286. 286
  287. 287
  288. 288
  289. 289
  290. 290
  291. 291
  292. 292
  293. 293
  294. 294
  295. 295
  296. 296
  297. 297
  298. 298
  299. 299
  300. 300
  301. 301
  302. 302
  303. 303
  304. 304
  305. 305
  306. 306
  307. 307
  308. 308
  309. 309
  310. 310
  311. 311
  312. 312
  313. 313
  314. 314
  315. 315
  316. 316
  317. 317
  318. 318
  319. 319
  320. 320
  321. 321
  322. 322
  323. 323
  324. 324
  325. 325
  326. 326
  327. 327
  328. 328
  329. 329
  330. 330
  331. 331
  332. 332
  333. 333
  334. 334
  335. 335
  336. 336
  337. 337
  338. 338
  339. 339
  340. 340
  341. 341
  342. 342
  343. 343
  344. 344
  345. 345
  346. 346
  347. 347
  348. 348
  349. 349
  350. 350
  351. 351
  352. 352
  353. 353
  354. 354
  355. 355
  356. 356
  357. 357
  358. 358
  359. 359
  360. 360
  361. 361
  362. 362
  363. 363
  364. 364
  365. 365
  366. 366
  367. 367
  368. 368
  369. 369
  370. 370
  371. 371
  372. 372
  373. 373
  374. 374
  375. 375
  376. 376
  377. 377
  378. 378
  379. 379
  380. 380
  381. 381
  382. 382
  383. 383
  384. 384
  385. 385
  386. 386
  387. 387
  388. 388
  389. 389
  390. 390
  391. 391
  392. 392
  393. 393
  394. 394
  395. 395
  396. 396
  397. 397
  398. 398
  399. 399
  400. 400
  401. 401
  402. 402
  403. 403
  404. 404
  405. 405
  406. 406
  407. 407
  408. 408
  409. 409
  410. 410
  411. 411
  412. 412
  413. 413
  414. 414
  415. 415
  416. 416
  417. 417
  418. 418
  419. 419
  420. 420
  421. 421
  422. 422
  423. 423
  424. 424
  425. 425
  426. 426
  427. 427
  428. 428
  429. 429
  430. 430
  431. 431
  432. 432
  433. 433
  434. 434
  435. 435
  436. 436
  437. 437
  438. 438
  439. 439
  440. 440
  441. 441
  442. 442
  443. 443
  444. 444
  445. 445
  446. 446
  447. 447
  448. 448
  449. 449
  450. 450
  451. 451
  452. 452
  453. 453
  454. 454