Questions Asked on
December 3, 2009

  1. physics

    A 6.0 kg object undergoes an acceleration of 2.0 m/s2.a. What is the magnitude of the net force acting on the object?b. If this same force is applied to a 4.0 kg object, what acceleration isproduced?

    asked by Melissa
  2. 9th grade

    What does it take to win a Tug of War?

    asked by Jon
  3. Physics

    A 1.80-cm-thick wood floor covers a 4.0 m times 5.5 m room. The subfloor on which the flooring sits is at a temperature of 16.1C, while the air in the room is at 19.2 C. What is the rate of heat conduction through the floor? Use 0.200 W/m* K for the

    asked by Ana
  4. Physics

    Overall 80 % of the energy used by the body must be eliminated as excess thermal energy and needs to be dissipated. The mechanisms of elimination are radiation, evaporation of sweat (2430 kJ/kg), evaporation from the lungs (38 kJ/h), conduction, and

    asked by Vico
  5. physics

    at 25.0m below the surface of the sea (density=1.025kg/m^3), where the temperature is 5.00C, a diver exhales an air bubble having a volume of 1.00cm^3. If the surface temperature of the sea is 20.0C, what is the volume of the bubble just before it breaks

    asked by james
  6. Straight-line Depreciation

    Please how do i calculate this problem. An asset was purchased for $150,000. It had an estimated salvage value of $30,000 and an estimated useful life of 10 years. After 5 years of use, the estimated salvage value is revised to $24,000 but the estimated

    asked by Peaches
  7. physics

    A 25 ft long crane supported at its lower end by a pin is elevated by a horizontal cable. A 250 lb load is suspended from the outer end of the crane. The center of gravity of the crane is 10 ft from the pin and the crane weighs 200 lb. What is the tension

    asked by sandhya
  8. Literature

    I still don't understand the tone of the poem 'Harlem'. I went through all the links but couldn't figure it out...can i please get an explanation? Thanks -MC

    asked by mysterychicken
  9. physics

    What is the net upward force on an airplane wing of area 20.1 m2 if the speed of air flow is 302 m/s across the top of the wing and 287 m/s across the bottom? (assume the density of air is 1.29 kg/m3)

    asked by Anonymous
  10. Social

    In the introduction, explaining the historical conditions or factors that led up to your report A) may be unnecessary, depending on the nature and length of your report. B) is unnecessary in internal reports. C) diminishes your credibility by wasting

    asked by Jake
  11. physics

    a spring has a 2.000x10^3 N/m spring constant. how do you find the mass that will make it oscillate 5.0 times per second? 10.0 times per second?

    asked by abbigail
  12. 4th grade

    why is .4 equal to .40

    asked by jimmy
  13. Algebra

    The school that Trevon goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 12 adult tickets and 4 student tickets for a total of $188. The school took in $171 on the second day by selling 6 adult tickets and

    asked by Zach
  14. pre-cal

    A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is . From a point 1500 feet closer to the mountain along the plain, they find

    asked by ramla
  15. AP Physics

    A Honda Civic and Lincoln Town Car are initially at rest on a horizontal parking lot at the edge of steep cliff. The Town Car has twice as much mass as the Civic. Equal constant forces are applied to each car and they accelerate across equal distances

    asked by Hannah
  16. physics

    Glycerin, of density 1260.0 kg/m3, is poured into an open U-shaped tube. Ethyl alcohol, of density 790.0 kg/m3, is then poured into one arm until the height of the alcohol column is 21.4 cm. The two liquids do not mix. What is the difference in height

    asked by Anonymous
  17. physics

    A baseball of mass 250g, pitched with a speed of 40m/s, is caught by a catcher, whose glove moves backward 0.25m while stopping the ball. a)what is the kenetic energy of the ball? b)how much work did the catcher's glove do on the ball? c) what was the

    asked by Alemu
  18. Math

    Which of the following statements describe an exponential relationship? A. the temperature is increasing at the rate of 3 degrees per hour. B. the number of bacteria is increaing at the rate of 30% per minute C. The number of cars in the parking lot is

    asked by Taylor
  19. corporate financial

    check my answer if answer is diffferent show how you got it 1. Firm A uses straight-line depreciation. Firm B uses MACRS depreciation. Both firms bought $100,000 worth of equipment two years ago. The equipment has a 7-year life. Both firms are in the 34

    asked by pattikake1959
  20. physics

    A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.17 and the push imparts an initial speed of 4.3 m/s?

    asked by Kyle
  21. Calculus

    A water skier skis over the ramp, 5m vertical, 1m horizontal, at a speed of 12m/s. How fast is she risingas she leaves the ramp? d=root26 dy/dt=[(d)(d')-(x)(x')]/y dy/dt=[(12)(root26)-(5)(x')]/1 How do I find dx/dt? Thanks in advance.

    asked by sh
  22. Chemistry 2

    You have a stock solution of 15.0 M NH3 . How many milliliters of this solution should you dilute to make 1200ml of 0.280 M NH3? If you take a 15.0ml- portion of the stock solution and dilute it to a total volume of 0.600 L , what will be the concentration

    asked by Melissa
  23. AP Physics

    Assume that at sea-level the air pressure is 1.0 atm and the air density is 1.3 kg/m3. (a) What would be the height of the atmosphere if the air density were constant? 7.919 km (b) What would be the height of the atmosphere if the air density decreased

    asked by Brian
  24. physics

    How long does it take a 1000W electric kettle to bring 1.0L of water to the boiling point if the initial temperature is 15oc and the kettle is made of 400g of iron? Assume that no heat was lost to the surroundings and that the kettle was 100% efficient?

    asked by Alemu
  25. accounting

    How do i calculate this problem. An asset was purchased for $150,000. It had an estimated salvage value of $30,000 and an estimated useful life of 10 years. After 5 years of use, the estimated salvage value is revised to $24,000 but the estimated useful

    asked by Peaches
  26. math

    A train left Podunk and traveled west at 70 km/h. Two hours later, another train left Podunk and traveled east at 90 km/h. How many hours had the first train traveled when they were 1420 km apart? How do you solved this?

    asked by Kate
  27. Physics

    A sports car of mass 1400 kg (including the driver) crosses the rounded top of a hill (radius = 93 m) at 27 m/s. 1) Determine the normal force exerted by the road on the car. 2) Determine the normal force exerted by the car on the 75 kg driver. 3)

    asked by Anonymous
  28. physics

    A horizontal force of 50N is applied to a 2.0Kg trolly, initially at rest, and it moves a distance of 4.0m along a level, frictionless. The force then changes to 20N and acts for an aditional distance of 2.0m. a) what is the the final kinetic energy of the

    asked by Alemu
  29. Physics

    A Honda Civic and Lincoln Town Car are initially at rest on a horizontal parking lot at the edge of steep cliff. The Town Car has twice as much mass as the Civic. Equal constant forces are applied to each car and they accelerate across equal distances

    asked by Hannah
  30. physics

    A Box (15.0 kg) is pulled up a 37 degree ramp with a force of 295 N. The frictional force acting on the block is 56.0 N. If Box travels 12.0 m up the ramp, determine the change in Box’s PEgrav.

    asked by kimmy
  31. math

    I'm trying to find the convolution f*g where f(t)=g(t)=sin(t). I set up the integral and proceed to do integration by parts twice, but it keeps working out to 0=0 or sin(t)=sin(t). How am I supposed to approach it? integral (sin(u)sin(t-u)) du from 0 to t.

    asked by chuck
  32. Physics

    A U-shaped tube is filled mostly with water, but some vegetable oil has been added to both sides of the U tube. On the right side of the tube, the depth of oil is 5.00 cm . On the left side of the tube, the depth of the oil is 2.30cm . The density of the

    asked by Danny
  33. math

    A fireman stood on the middle step of a ladder, shooting water into a burning building . As the smoke lessened, he climbed up three steps and continued his work. the fire got worse,so he had to go down five steps. Later he climbed up the last six steps and

    asked by tao
  34. Chemistry

    You have a stock solution of 15.0 M NH3 . How many milliliters of this solution should you dilute to make 1200ml of 0.280 M NH3 ?

    asked by Melissa
  35. math

    Eight pennies are placed in a row on a tabletop. Every other coin is then replaced with a nickel. Every third coin is then replaced with a dime. finally, every fourth coin is replaced with a quarter. what is vaule of the eight coins noe on the table?

    asked by Tim
  36. math 156

    the ratio of males to females in a college class is 2:6. if there are 72 students in the class, how many are males? is it 36 males?

    asked by Rmz
  37. physics

    A resting person requires 14.5 L of oxygen per hour to maintain metabolic activities. Such a person breathes in 0.480 L of air at approximately 25.0 degrees celsius with each breath. The inhaled air is 20.9% while the exhaled air is 16.3%. How many oxygen

    asked by AE
  38. Math-6-grade (Anonymous)

    Sorry Anonymous that I deleted your post by mistake, but here's the answer to the question: "there are four posts on each side of a square fenced-in are. How many posts are there in all?" The corner posts are counted for both of the adjacent sides. So the

    asked by MathMate
  39. pre calcalus

    a 10 inch radius lawn roller makes 1.2 revolutionsper second,what is angular speed in radians per second

    asked by gion
  40. pre calcalus

    a circle with 4 inch radius, find length of arc when intercepted by central angle of 240 degrees

    asked by gion
  41. physics

    Water is forced out of a fire extinguisher by air pressure. How much gauge air pressure in the tank (above atmospheric) is required for the water jet to have a speed of 34.6 m/s when the water level is d = 0.520 m below the nozzle?

    asked by Anonymous
  42. physics

    A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.17 and the push imparts an initial speed of 4.3 m/s?

    asked by Kyle
  43. chemistry

    Write the complete balanced molecular, ionic,and net ionic equations for the reaction of nickle II chloride + sodium phosphate. Which product,if any, is a precipitate?

    asked by LaLa
  44. Social

    1. Speeches and oral presentations are much like other business messages in that A) they require similar planning. B) the size of the groups to which they are delivered is similar. C) the interaction between the audience and speaker is similar. D) they

    asked by Jake
  45. chemistry

    Can anyone help me with these Chemistry questions? I am trying to study for an upcoming test and its just not sinking in as well and I thought. This is Thermochem for a heads up: Suppose 33mL of 1.20M HCl is added to 42mL of a solution containing excess

    asked by Dina
  46. chem

    1.Aqueous solutions of sodium and copper (II) chloride are mixed together. which statement is correct? a. both NaCl and CuS will precipitate from solution b. no precipitate will form c. CuS will precipitate from solution d. NaCl will precipitate from

    asked by audrianna
  47. MATH/Algebra

    I know that to find the height of a woman that has a tibia bone measuring 43.4 would be computed like this H(t)=0.984(t)+28.6, and I would arrive at this :69.5696, but I how would I prepare a function to figure out a womeans tibia in inches when she is 5

    asked by HGO
  48. 4th grade

    Kenny wants to get to the pool 25 minutes before the pool opens. It takes him 20 minutes to drive, and 15 minutes to pack up. At what time should he start packing up if the pool opens at 5:30 p.m.?

    asked by Regina
  49. physics

    A 1.8 kg object is pulled along the floor with a force of 7.0 N acting horizontally. If the object accelerates at 2.4m/s^2, how much kinetic friction is acting? how do i do this? could you please explain step by step

    asked by kerri
  50. PreCalculus

    How do i find the phase shift in this problem Naturalists find that the populations fo some kinds of predatory animals vary periodically. Assume that the population of foxes in a certain forest varies sinusoidally with time. Records started being kept when

    asked by Joe
  51. question

    Sometimes it is necessary to challenge what people in authority claim to be true. Although some respect for authority is, no doubt, necessary in order for any group or organization to function, questioning the people in charge-even if they are experts or

    asked by Katia
  52. Physics

    Thank you so much bobpursley for all your help. I actually think I'm beginning to understand, physics involves a lot of what I've learned so far, Newton's laws, mass, acceleration, etc... I just have to make connections. “A Honda Civic and Lincoln Town

    asked by Hannah
  53. Physics

    Hey can someone help me out? I only have 1 attempt left on this question and do not understand it at all!!! A 3.5 kg balloon is filled with helium ( density = 0.179 kg/m^3). If the balloon is a sphere with a radius of 5.2m , what is the maximum weight it

    asked by Tommy
  54. chemistry.

    What mass of ethanoic acid would you used and how would you prepare 0,500 dm3 of a 0,500 mol dm3 ethanoic acid solution? (M of ethanoic acid=60,0)

    asked by Denmark
  55. math

    An item regularly priced at is on sale at a discount of . What is the sale price of the item?

    asked by j
  56. Physics

    Thank you so much bobpursley for all your help. I actually think I'm beginning to understand, physics involves a lot of what I've learned so far, Newton's laws, mass, acceleration, etc... I just have to make connections. “A Honda Civic and Lincoln Town

    asked by Hannah
  57. Sociology

    What functions do status, role, primary groups, and secondary groups play in social interactions between different racial and ethnic groups. List one example of each.

    asked by Amber
  58. Math

    Suppose that a country's population is 64 million and its population growth rate is 3.7% per year. If the population growth follows a logistic growth model with r=.053, what is the country;s carrying capacity? How do I solve this problem... or at least

    asked by Taylor
  59. Chem

    How many potassium ions are present in 91.1g of potassium nitrate?

    asked by Lindsey
  60. AP Physics

    You go to kitchen to boil water. You pour 280 gram of water to a container, and put the container on a 293 W electric heater. Assume that all the heat from the heater is used to heat the water. The specific heat of water is 4.19 J/g ° C. As always, be

    asked by Sasami
  61. Calculus

    Hi there I am having some troubles trying to do my calculus homework and I really need help trying to do this problem from my homework: Set up the problem and do not solve: The mass of the solid bounded by the surfaces 2x^2 + 2y^2= 9, z=0, z=3 with density

    asked by shylo
  62. chemistry.

    When 41.81 of a solution of aqueous sliver ions with a concentration of 0.2040 mol dm3 is added to a solution of XO-3/4 ions, 1.172g of the precipitate is formed? ..Can any one help me with that! NB: -3/4 mean that 3 is up and 4 is under it.

    asked by Mark
  63. author

    Which of the following, if true, provides the strongest support for an archaeologist’s conclusion that a particular stretch of ancient stone-paved road was part of the Inca road system? A) When the Inca conquered the area, they took some of the existing

    asked by Anonymous
  64. French

    Could you please check these thanks Directions: Un peu de culture: Answer in the affrimative using a pronoun follow the model -Tu ne connais pas ce musée -Si, je le connais Part 1 1. -Te ne connais pasa cet acteur? Answer: -Si, je le connais. 2. -Tu ne

    asked by Lisa
  65. 8th grade

    how do you draw an atom of the isotope nitrogen 14? I know it has 7 protons and 7 neutrons but how do I draw it?

    asked by geof
  66. physics

    three dogs play tug-of-war with a chew toy. Each dog pulls with a force that is horizontal with the ground. Determine the net force acting on the chew toy and the acceleration of the chew toy if its mass is 325g. (ignore friction and gravity) Dog 1 pull:

    asked by Katie
  67. Social Studies

    I have to do a current event about a revolution that happened at most 20 years ago, for example like maybe when a group of people boycotted for a law to be passed. So does anyone know an article I can find online?

    asked by Lola
  68. physics

    A 1.13 kg hollow ball with a radius of 0.139 m, filled with air, is released from rest at the bottom of a 1.86 m deep pool of water. How high above the water does the ball shoot upward? Neglect all frictional effects, and neglect the ball's motion when it

    asked by Anonymous
  69. math 6 grade

    1. A farmer had several pens out by the barn. He had used 17 lenghts of fence to make the pens, but now he needs to use six of those fence lengths for another project. He wants to remove six fence lenghts but still have two square pens remaing. Which

    asked by Tia
  70. math

    The gym is sponsoring a basketball elimination tournament with 16 teams entered. Winner play winners until only one team is left. What is the total number of games that must be played?

    asked by kelvin
  71. World culture

    What is culture? Define its specific components. o What is art? Define the visual arts, music, architecture, and literature. o What is the role of the artist? To what extent do artists express or influence culture?

    asked by stephaine
  72. Social

    When selecting a medium for a report A) you should choose the ones that are most convenient. B) you should choose the ones that are most economical. C) your decisions should reflect your audience and your purpose. D) you should always present your report

    asked by Jake
  73. Algebra

    Why does this happen? A=3 and b=2 A+b=c is the equation. Multiplying both sides of the equation makes the equation a^2+2ab+b^2 which is equal to a^2+ab-ac=-ab-b^2+bc Dividing by (a+b-c) we find a=-b or 3=-2 Why?

    asked by Ali
  74. Physics

    Hey can someone help, im having trouble converting alot. IP The weight of your 1440 kg car is supported equally by its four tires, each inflated to a gauge pressure of 30.0 lb/in^2. What is the area of contact each tire makes with the road? What gauge

    asked by Elizabeth
  75. Physics AP

    In the process from point b to point c, the gas in the engine is heated to a higher temperature. As the gas is heated, it expands pushing the syringe piston up. Let's assume that this process is isobaric. The temperature of the gas at point b is 20.2 ° C,

    asked by Sasami
  76. science

    show the steps a scientist would take to classify a newly discovered animal

    asked by rell
  77. child development

    how you can assess a child’s knowledge? i also have another question. what are Gardner's intelligences? is it Linguistic intelligence ("word smart"): Logical-mathematical intelligence ("number/reasoning smart") Spatial intelligence ("picture smart")

    asked by scooby
  78. math

    how to write two differnt word phrases for the expression t 30

    asked by Frank
  79. spanish

    how can i do a project telling that I understand directions and locations in spanish any ideas

    asked by jake
  80. physics

    find the electric field and direction 0.100 micrometer west of an electron (144000 N/C East) im not sure if im converting it right.. 0.100 micrometer= 1x10^-6 m

    asked by sammeh
  81. Biology- Urgent

    1. There is no ____ that is specified by a stop codon on an mRNA molecule. 2. Why is it impostant for RNA polymerase to start at the right place and transcribe in the right direction? I really had no ideas on these two. Please help. Any help is

    asked by Anonymous
  82. math

    A fireman stood on the mioddle step of a ladder, shooting water into a burning building . As the smoke lessened, he climbed up three steps and continued his work. the fire got worse,so he had to go down five steps. Later he climbed up the last six steps

    asked by kelvin
  83. 11th grade

    What is the balanced chemical equation for P+H2>PH3?

    asked by Butt
  84. physics

    what's the difference between weight and mass?

    asked by Anonymous
  85. science

    how do you find the wavelength by observing a standing wave

    asked by Anahid
  86. Business

    What are the different devices used to communicate in businesses?? already have: instant messaging, cell phones, e-mail,online conferencing, video call, voice mail.

    asked by clueless
  87. programing

    1. CheckPoint: Interfaces and Communication Messages Understanding object-oriented methodologies is often difficult. You already understand that object-oriented analysis and design emulates the way human beings tend to think and conceptualize problems in

    asked by cheryl
  88. Math

    Solve: x^2-x-1=0 is it (x+1)(x-1)= 0 x + 1 = 0 x - 1 = 0 so then X = -1,1

    asked by Taylor
  89. econ/calc

    I was trying to derive for A from the function: profit=PQ(P,A)-C(Q(A))-A these are my steps profit=Pdq/da-Cqdq/da-1 dprofit/dA=P(dq/da)-MC(dq/da)-1=0 (p-MC)change in q/change in A=1 p-mc/p[A/Q *change in q/change in A]=A A=TR Ea/Ed ----------- this is what

    asked by angad
  90. spanish 2

    how do you say these in spanish You can go by car, train, bus, or walk. and plan for a day in the city

    asked by kim
  91. math

    An amount of money is invested at 12%/a interest. Write an equation and solve it to determine the length of time it will take for the original amouunt to double if the interest is compounded annually.

    asked by Cyn
  92. physics

    how do you find the magnitude of the net force if you have 2 forces acting on an object: 8.4 N[S] and 7.5 N[E]

    asked by Anonymous
  93. science

    how is the periodic table like a calendar

    asked by Katherine
  94. math 156

    $25 dollars can be saved by buying a jacket that is marked down 20%. what was the jackets original price? was is $125

    asked by Rmz
  95. math

    2x^2+x-28=0 Solve by completing the square

    asked by kaitlin
  96. Social

    Major online job boards such as CareerBuilder or Monster have made it A) impossible to find good jobs in a specific area. B) virtually impossible not to find a job you like. C) far easier to stand out from the crowd of other applicants. D) much more

    asked by Jake
  97. 4th grade New

    Jason is thinking of a number. He adds 8, multiplies by 2, subtracts 4,and then divides by 2. The result is twenty-four. What number is Jason thinking of?

    asked by Regina
  98. Algebra

    Determine if linear equation is so put into satandard form. 3x = 5y 7y = 2x + 5x 3/x + 4/y = 2

    asked by Michelle
  99. FINANCE

    Collins Office Supplies is considering a more liberal credit policy to increase sales, but expects that 9 percent of the new accounts will be uncollectible. Collection costs are 5 percent of new sales, production and selling costs are 78 percent, and

    asked by JEFF
  100. Math-stuck

    I know that to find the height of a woman that has a tibia bone measuring 43.4 would be computed like this H(t)=0.984(t)+28.6, and I would arrive at this :69.5696, but I how would I prepare a function to figure out a womeans tibia in inches when she is 5

    asked by HGO
  101. math

    Sandra has eight coins witch total $0.87. what coins does she have (Hint:make a chart or a list)

    asked by joseph
  102. precalculus

    For the acute angle with sin theta=3/5, find cos theta, tan, cot, csc, sec.

    asked by tina
  103. math 156

    a worker makes 30000 a year. after 1 year he gets a raise of 5%. the next year he gets a raise of 10%. If he received no raise the first year, what percent increase would give him the same salary as consecutive raises of 5% and 10%? would it be 50%

    asked by Rmz
  104. Physics

    CAN SOMEONE PLEASE HELP ME; I NEED TO KNOW IF MY ANSWERS TO THESE QUESTIONS ARE CORRECT! THANK YOU SO MUCH!! 1.) Whenever an interaction occurs in a system forces occur in equal and opposite pairs. Which of the following do not always occur in equal and

    asked by Hannah
  105. science

    Marianne poured salt crystals into water to form a solution.In the solution, which best decribes the salt.

    asked by Christopher
  106. economics

    i am doing my dissertation and i need to find a model to determine the optimum level of bank reserve ratio. i have looked at Richard Cothren (1987)’s journal entitled “ Asymmetric Information and Optimal Bank Reserves”. but i want to find a SIMPLE

    asked by izy
  107. calc.microecon

    I was trying to derive for A from the function: profit=PQ(P,A)-C(Q(A))-A these are my steps profit=Pdq/da-Cqdq/da-1 dprofit/dA=P(dq/da)-MC(dq/da)-1=0 (p-MC)change in q/change in A=1 p-mc/p[A/Q *change in q/change in A]=A A=TR Ea/Ed ----------- this is what

    asked by angad
  108. Science

    What are interactions between living things in the tropical rainforest? thanks

    asked by Rebekah
  109. 11th grade

    A sign is being held up by two walls which are 22ft apart. You want the sign, which has a mass of 200kg, to hang in the middle of the two walls. If you have 50ft of rope, which has a breaking point of 2200N, and you want the sign to hang in equilibrium,

    asked by Pat
  110. physic

    Hi! Help me please, thank you so much. What mass of water at 28.0 °C must be allowed to come to thermal equilibrium with a 2.05-kg cube of aluminum initially at 1.50 102 °C to lower the temperature of the aluminum to 54.8 °C? Assume any water turned to

    asked by Chan
  111. MATH - logarithms

    solve for x. 485 * 5^x+2 = 12^2x-1

    asked by Cyn
  112. math 6 grade

    If 2 people have 60 shares of stock between them and you double the number of shares of the 1st person and half the number of shares of the 2nd person so that they both have equal shares. How do find the number of shares the 1st person has?

    asked by Janice
  113. Alebra II

    Write as a unit price. 8 pounds of potatoes cost $3.60

    asked by Ashley
  114. algebra

    show me how to solve this problem: Given an endpoint, C, and a midpoint, M, find the other endpoint, D, when C= (3,3), M= (0,0)

    asked by keeya
  115. child development (answer included)

    • Choose a topic (such as history or science) you feel is relevant to the age group you work with or expect to work with. • Describe in 200 to 300 words how you can assess a child’s knowledge on your chosen topic using at least five of Gardner's

    asked by scooby
  116. physics

    what's the difference between weight and mass?

    asked by Anonymous
  117. chemistry 11

    explain the process of a bohr model

    asked by terrance
  118. French

    How would you say: she is a good professor and I (feminine) am your good student thank you

    asked by Anonymous
  119. math 156

    what is the simplest ratio form this can be written in... $4 to 25 cents? is it 1:5

    asked by Rmz
  120. physics

    What is the volume occupied by 7.0 g of hydrogen under a pressure of 2.6 atm and a temperature of 300 K? answer is .0332 m^3. how? A steel cylinder of radius 7.0 cm and length 4.0 cm is placed in end-to-end thermal contact with a copper cylinder of the

    asked by jawn
  121. math

    find equivalent fractions: 6/10, 3/4, 4/12 and 1/5

    asked by clare
  122. math 156

    Liz needs to buy soft drinks for 30 people. At the store she finds that she can buy 6 cans for $2.10. She assumes that each person would drink 2 cans each. WHen she checks her wallet she finds that she only has $20. Does she have enough money to buy soft

    asked by Rmz
  123. elementary

    correct spelling of the following: two (sister's, sisters') bicycles??

    asked by mariah
  124. spanish 2

    how do you say start, beginning, end, stay in spanish

    asked by jaz
  125. accounting

    Write a 200- to 300-word response explaining what information would be found in each of the following groupings on a classified balance sheet and how that data might indicate the future success or failure of a business: o Current assets o Long-term

    asked by Anonymous
  126. math

    the difference between two numbers is 3. the sum of the numbers is 45. what are the two numbers

    asked by jordan
  127. Writing

    Can you tell me if this is a good start on my persuasive paragraph ! Sit down for a change. Take a seat at El Toro! El Toro has been serving their food since 1998. Do you know why you should visit the magnificent restaurant? Well when you go and take a

    asked by Carmel
  128. math

    Find equivalent fractions with common denominator and order form least to greatest: 2/3, 1/2, 5/12

    asked by sue
  129. AP Physics

    Hi im new so maybe one of you can help me understand this question, can't find it anywhere in the book. A person weighs 723N in air and has a body-fat percentage of 29.3% . What is the overall density of this person's body? What is the volume of this

    asked by Danny
  130. spanish II

    any ideas on projects telling that I understand location and time in spanish

    asked by jake
  131. pre calcalus

    evaluate sin(-5pi/9)

    asked by gion
  132. College physics

    A 0.45 mass is attached to a spring with a force constant of 26 and released from rest a distance of 3.2 from the equilibrium position of the spring. a.What is the maximum speed of the mass? (m/s) b.How far is the mass from the equilibrium position when

    asked by Mary
  133. Science

    Do you believe humans can harvest resources in an environmentally friendly way, or should national forests be left in their natural state in which resources are not used to benefit humans?

    asked by Lori
  134. transcript

    Hello!I would like that you transcribe me in english 2 audios document (they're very short 2 min the both)you can listen them if you write in search engine :for the first Genevieve : how I celebrate Thanksgiving &for the second Brigitte : Thanksgiving

    asked by Marie
  135. college

    What social, political, and economic changes pulled the North and the South farther apart? · What was the final determining factor that led to Southern secession? · What social and economical changes discussed in previous chapters fueled sectional

    asked by Anonymous
  136. math 156

    Suppose that Berry Bonds has 148 hits in 500 bats. how many hits does he need in his next 10 at bats to raise his batting average to .300? does he only need 1 hit

    asked by Rmz
  137. Science

    Do you believe humans can harvest forest resouces in an environmentally friendly way, or should national forests be left in their natural state in which resources are not used to benefit humans? To which side are you inclined? What are some examples from

    asked by Lori
  138. Chemistry

    what is the standard heat formation of F3O4. i know for F2O3 is -824.2. is this the same for F3O4????

    asked by school girl
  139. JOe

    How do I find the equation of the wave h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 9 8 9 5 8 9 3

    asked by PreCalculus
  140. business

    what is the difference between video conferencing and video call?

    asked by Person
  141. accounting

    Can anyone tell me how earnings are valued, how shareholder wealth can be maximized and how management decisions affect stockholder wealth? This is confusing.

    asked by Terri
  142. math

    Alog is cut into four pieces in 12 seconds. At the same rate, how long would it take to cut the log into five pieces? Hint the answer is not 15!

    asked by kathy
  143. colege algebra

    Solve the system by the elimination method 5x+5y=-7 7x-2y=13 Could someone please help me? Thanks

    asked by muff
  144. Physics

    Why do ironic compounds have high melting points?

    asked by Bree
  145. math

    Hello i am in class 6 and i have problem in some of the topics please can you explain me 1.Factors and Multiples 2.Integers 3.Rational numbers 4.Estimation and approximation Thank you.

    asked by pinkmuffin
  146. Abstract algebra

    Prove that the cancellation law of multiplication is equivalent in a commutative ring to the assertion that the product of non-zero factors is not zero

    asked by Sunshine 2
  147. Social

    Delivering a business report as an electronic file A) is useful if readers will need to search the report frequently. B) costs too much to be practical. C) is usually an inconvenience for readers. D) is rarely, if ever, necessary. i think its A or C....but

    asked by Jake
  148. 9th grade

    What is communism?

    asked by mnjhfgh
  149. pre calcalus

    evaluate sec(1.7

    asked by gion
  150. LAng. Arts

    Develop a showing paragraph with specific F.I.R.E.S ( facts, incidents, reasons, examples, and statistics) The topic sentence is: The fire drill went miserably.

    asked by ding ling su
  151. 8th grade

    how did the survivours of Krakatoa receive help

    asked by joe
  152. math

    what is the formula for 24.00 divided by 8?

    asked by reggie
  153. l.a

    what does equivalent mean?

    asked by Anonymous
  154. English-Poetry

    I need to write a couple using 5 of these words: interfere, intermediate, interpret, recommend, remarkable, adjective, convection cell, weather, climate, or hyperbole

    asked by Miranda
  155. Chemistry

    Is this an accurate definition of Tg: Glass transition temperature. The temperature at which a glass forming liquid transitions into an amorphous solid. This transition temperature depends on the rate of cooling.

    asked by Alex
  156. Algebra 1

    In how many ways can Abby, Bonnie, Chuck, Dennis, Ed and Fred line up at the water fountain so that the two girls, Bonnie and Abby, are not beside each other?

    asked by Zach
  157. SSI OASDI FICA

    Although I was aware that this controversial debate was still raging even recently, where can I find out more about the double-sided issue of social security privatization?

    asked by supertrooper
  158. math 156

    find the simple interest for the indicated length of time. $20000 at 5.5% interest for6 months. 20,000(0.55)(6)= $66,000 is that correct?

    asked by Rmz
  159. Chem

    How many moles of excess reactant when 338mL of 0.226M sulfuric acid reacts with 0.493L of 0.211M sodium hydroxide to form water and aqueous sodium sulfate?

    asked by Lindsey
  160. math

    if a group of students are facing each other in a circle and student 2 is facing student 9 how do i find out how many students are in the circle

    asked by melody
  161. Math

    Evaluate: 1/3 + (-5/6) + (-1/2) A) -1 B) 2/3 C) 0 Evaluate: |-27 + 14| A) 13 B) 41 C) -13 Is (C)-13 correct? Evaluate: (-3)(-6) + (4)(-2) A) -26 B) -10 C) 10 Is (B) -10 correct?

    asked by Anonymous
  162. Math

    If you begin with a right triangle with sides a, b, and c and decrease the right angle so it is an acute angle, how does a^2 + b^2 compare with c^2 ?

    asked by Punkie
  163. Science

    I can find anything on these questions I need to answer to pass year nine. My teacher said he doesn't matter where the answers come from as long as I pass and don't have to repeat. PLEASE HELP ME! Due tomorrow! 1. List 5 latest developments in sports

    asked by CJ
  164. criminal justice

    write a 350-700 word response in which you describe each of the four caterories of stress associated with policing profession. within each response, describe how this type of stress the officer's job, social life, and personal life. How might the officer

    asked by April
  165. math

    f(x)=xsquared+10 and g(x)= square root of x-1 and i have to figure out g(f(-3) i just don't know how to do it because i thought you could not have a negitive under a radical?

    asked by Sally
  166. Physics

    Hi im new so maybe one of you can help me understand this question, can't find it anywhere in the book. A person weighs 723N in air and has a body-fat percentage of 29.3% . What is the overall density of this person's body? What is the volume of this

    asked by Danny
  167. Pre-algebra

    I can't figure out how to solve: Question #1: Two number cubes are rolled and a coin is tossed. Find the number of possible outcomes. Question #2: What is the probability of winning a lottery game where the winning number is made up of 6 digits from 0-9

    asked by Tyler
  168. Business Maths

    How do i calculate this problem. In 2007 the Pearl Boutique had net credit sales of $750,000. On January 1, 2007, Allowance for Doubtful Accounts had a credit balance of $16,000. During 2007, $30,000 of uncollectible accounts receivable were written off.

    asked by Peaches
  169. Math...PLEASE

    I need help to see if I did these steps and problems right before I hand this in…I am stuck, and cannot figure out question three part b and H…I just need help with the proper function of b and h part. 1. An anthropologist drives a car at a speed of 30

    asked by Holly
  170. psychology-help please

    I'm workinng on assignment and need help a)The danger of overdiagnosis b)The power of diagnostic labels c)The confusion of serious mental disorders with normal problems d)The illusion of objectivity and universality THANKS!!!

    asked by vedrana
  171. math 156

    if a sewer line drops 1 foot every 40 feet how many feet will drop over a distance of 100 feet? is it 400 feet?

    asked by Rmz
  172. j

    pictures of words

    asked by randy
  173. IPC

    a light bulb transferring 5,000 joules of energy for 5 minutes

    asked by Anonymous
  174. math

    -4(2n-6)

    asked by Maria
  175. U.S. History

    Defend McCarthyism as appropriate for the time in which it occurred.

    asked by nina
  176. math

    for the problem asking to integrate (x^2 - 5x+ 14 )/(x-1) * (x^2+9) I solved getting the answer ln(x-1)-5/3 tan^-1(x/3)however this isn't right. plsee help!

    asked by sonia
  177. please help

    Suppose a brewer intends to use the triangle taste test method to identify the best applicants for the position of “taster.” (It does so because the company will want their tasters to have sensitive palates, and it will need someway of determining

    asked by Desire
  178. pre calcalus

    angle measure to degree form 401degrees 39minutes 24seconds

    asked by gion
  179. college

    how to save a microsoft word document on a computer runnign a windows based operating system to a computer disc

    asked by shari
  180. division

    what is 9227divided by 83

    asked by Amber
  181. 3rd grade

    what multiplication fact can be found using the arrays for two times nine and five times nine?

    asked by alexander
  182. college

    1. Can an indiviudal be a leader and not have follwers? 2. Does a leader need managerial skills? 3. Does a manager need leadership skills? Why or why not?

    asked by julian
  183. English

    When do I capatilize the word aunt? I think it's: This is my Aunt Marrianne. Is that right or is the a lowercase? Please explain. Thank You

    asked by Ella
  184. French to Sra McGinn

    Thank you for answering my earlier post; however I am still uncertain of how you would say: "she is a good professor". Elle est bon professeur??? Elle est bonne professeur?? Also, I know that one would not use the personal form when speaking to a teacher

    asked by Anonymous
  185. science

    how is the periodic like a calendar

    asked by Katherine
  186. 7th grade

    how do you make a time line for the story little house in the big woods from events from the book and events from historical period of book

    asked by jessica
  187. math

    how do you classify a number ( 5th grade stuff)

    asked by maggie
  188. Functions

    h(x)= x/(x-2) and g(x)= 2/x. Find and simplify h of g(x). I plugged g(x) into h: h(x)= (2/x)/[(2/x)-2] Now, would I multiply each by x, the Common Denominator? Therefore getting 2/(2-2x) which simplifies to 1-x?

    asked by Anon.
  189. Science

    hello my exams are just going to start and i don`t have science book because it`s not available in shops so for standard 6 can you give me some information in these topics: 1. Interdependence and Adaption 2.Scientists in the book scientists` topics are

    asked by pinkmuffin
  190. MATH

    X+6=19 X-7Y=-7 I cant remeber how to do this but think i need to find a common denominator?

    asked by Debbie
  191. science

    Potential to Kinetic or Kinetic to Potential. Describe an example of energy conversion that occurs during the activity. Playing in a rock band?

    asked by Anonymous
  192. making a travel guide

    i need help creating a powerpoint of a travel guide about flordia

    asked by jaz
  193. U.S. History

    Hey I am completely lost on these questions, I read the chapter, but still do not get it. I need to know how McCarthyism affected the lives and political thinking of people in the U.S.

    asked by bell
  194. math 156

    Dan, Shelly, Kirby worked together on a lawn. together they earned $4000. Dan worked 40 hrs, shelly worked 25hrs and Kirby worked 15 hrs. how should they divide the money? This one I do not understand, can anyone help me?

    asked by Rmz
  195. Science

    What are three ways to measure matter

    asked by Courtney
  196. cacl

    the integral of 1x^2-5x+14/(x-1)(x^2+9) the answer i got was ln(x-1)-5/3 tan^-1(x/3) however this is not right..... pleasee help!

    asked by sinead
  197. math

    which is greater than and which is less than? > < ..?

    asked by Anonymous
  198. Science

    What is the gradient of Clifty Creek 1300 & 1240 feet? _____ ft/mile

    asked by Bee
  199. science

    that helps alot

    asked by Katherine
  200. social studies

    i need to find the history of lambs. can you help???

    asked by alexander
  201. algerba i

    2(7n-1)> or equal 3(5-n)

    asked by Zach