Questions Asked on
February 22, 2010

  1. Chem answer check/ help

    For each of the following water-soluble compounds, indicate the ions present in an aqueous solution: NaI K2SO4 NaCN Ba(OH)2 (NH4)2SO4 would the answer to NaI be Na+ I-? Should there be more to my answer? Would K2SO4 be K+ SO-? Thanks for the explanation.

  2. Precalculus

    if f(x)=int(2x) find f(1.2)

  3. Math

    A standard train ticket in a certain city costs $2.50 per ride. People who use the train also have the option of purchasing a frequent-rider pass for $18.00 each month. With the pass, a ticket costs only$1.75 per ride. How many train rides in a month make

  4. Chemistry 101

    I don't remember my instructor going over this and the book isn't explaining it very well. Can anyone help answer these? Indicate the concentration of each ion or molecule present in the following solutions. 1. 0.30 M NaNO3 2. 1.5x10^-2 M MgSO4 3.

  5. Physics

    The work done by an external force to move a -7.75 µC charge from point a to point b is 25.0 * 10-4 J. If the charge was started from rest and had 4.73*10-4 J of kinetic energy when it reached point b, what is the magnitude of the potential difference

  6. Physics

    A 45 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 29 degrees, the crate begins to slide downward. What is the coefficient of static friction between the crate and the ramp? At what angle does the

  7. Chemistry

    Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and

  8. Math

    Find an angle such that 3 times the complement of the angle is 10 degrees less than the supplement of the angle. I know that supplement means 180 and complement is 90. I don't know what kind of problem this is.

  9. chemistry

    Which of the following is the formation reaction for CaO(s) ? A. CaO(s) Ca(s) + 21O2(g) B. Ca2+(aq) + O2–(aq) CaO(s) C. Ca(s) + 21O2(g) CaO(s). D. 2 Ca(s) + O2(g) 2CaO(s) E. 2 CaO(s) 2 Ca(s) + O2(g)

  10. Math

    What are the similarities and differences between functions and linear equations? How do you graph functions on a coordinate plane? Is there an instance when a linear equation is not a function? Provide an example. Write a function for your classmates to

  11. Algebra 2

    Express the function F(x)=1/(x+9) in the form g of h. If h(x)= x+9 , find the function g(x).

  12. Math

    An employee has a salary of $20,370 after getting a 5% raise. What was their salary before the increase in pay? What is the equation that needs to be used here? Thanks.

  13. Math

    Find the solution set for the equation. |x + 6| = 0

  14. Physics

    A crate full of artichokes rests on a ramp that is inclined 10.0° above the horizontal. Give the direction of the normal force and the friction force acting on the crate in each of these situations. (a) The crate is at rest. Normal Force : 1.perpendicular

  15. Chem answer check

    Which of the following are strong electrolytes? BaCl2 AgNO3 PbI2 Pb(NO3)2 KI I think they are all strong electrolytes. Is this correct?

  16. Math

    Find the equation of a line that is perpendicular to 3x-2y=6 and passes through (1,2)

  17. Chemistry

    how many grams of NaCN would you need to dossolve in enough water to make exactly 250.0mL of soultion with pH of 10.00?

  18. math

    An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to

  19. Biology

    Last ones on the test-- 37. Hyphae a. increase the surface area-to-volume ratio of the fungus b. have slender filaments c. allow for efficient uptake of nutrients d. all of the above D? 38. In which process do tRNA molecules attach amino acids to the

  20. Algebra

    Solve using the multiplication principle. Don't forget to check. -x/2=8. Here is how I did the problem but I think it's wrong. (-2/x)-x/2=8(-2/x) x= -16. Could you please help? Thanks.

  21. writing sentences and paragraphs

    Paragraph 1 Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must

  22. math

    A student says that it is actually impossible to measure an angle, since each angle is the union of two rays that extend infinitely and therefore continue forever. What is your response?

  23. Physics

    A farm tractor tows a 3800-kg trailer up a 19 degrees incline with a steady speed of 3.0 m/s. What force does the tractor exert on the trailer? (Ignore friction.)

  24. Physics

    How far above the surface of the Earth does an object have to be in order for it to have the same weight as it would have on the surface of the Moon? (Ignore any effects from the Earth's gravity for the object on the Moon's surface or from the Moon's

  25. English

    This is my whole poem. My poem dosen'thave to rhyme. The Green Team is like an angel,dancing through the beautiful blue sky. It is a miracle having Dearbhail,Amber,Stacey, Marina,Kudzayi and Sophie in Catherine. We work as a Team with no Fight's or

  26. geometry

    State the negation of the following statement: The sun is not shining.

  27. Chemistry

    Why do dispersed colloid particles stay dispersed? Please help because Im really confused.

  28. Chemistry

    Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and

  29. Physics

    A car traveling on a flat (unbanked) circular track accelerates uniformly from rest with a tangential acceleration of 1.70 m/s2.The car makes it one quarter of the way around the circle before it skids off the track. Determine the coefficient of static

  30. Math

    You plan on going golfing this weekend with a friend. You can either go to your favorite course which is 14 miles north of your house or to your friend's favorite course which is 14 miles south of your house. Write an abo!@#$%^&e value inequality that

  31. English

    Can you please check if the following statements are correct? Thank you. 1.Antony uses a rhetoric language. 2.He makes a comparison (draws a parallel) between his uncle and his father. 3.Hamlet refers to Claudius as a pickpocket of the Empire since he took

  32. college

    how many grams of chlorine are in 65 grams of CF2Cl2?

  33. 9th grade

    At what height is an object that weighs 490 N if it gravitational potential energy is 4900 N-m?

  34. English

    Has anyone seen the move "The Mighty", some people refer to it as "Freak the Mighty". I have a few questions on it, but before I post them here, I'd like to know if you've ever watched it. Thanks

  35. Math

    PLEASE HELP!!!NEED TO SOLVE: 5-(3)

  36. Physics

    When you push a 1.80-kg book resting on a tabletop, it takes 2.05 N to start the book sliding. What is the frictional force exerted on the book when you push on it with a force of 0.80 N?

  37. Biology

    37. Hyphae a. increase the surface area-to-volume ratio of the fungus b. have slender filaments c. allow for efficient uptake of nutrients d. all of the above D? 38. In which process do tRNA molecules attach amino acids to the growing chain according to

  38. physics

    A 121 cm-long, 3 g string oscillates in its m = 3 mode with a frequency of 154 Hz and a maximum amplitude of 5.0 mm. What are the wavelength and the tension in the string?

  39. social studies

    what is the the capital of florida?

  40. marrage

    what is love

  41. chemistry

    a 5.0-L flask contains 0.60 g 02 at a temperature off 22degrees C.what is the pressure (in atm) inside the flask?

  42. Financial Management

    Proctor Micro-Computers, Inc. requires $1,200,000 in financing over the next two years. The firm can borrow the funds for two years at 9.5 percent interest per year. Mr. Procter decides to do economic forecasting and determines that if he utilizes

  43. grammar

    tell me the parts of speech in this sentence "james and i talked about what to do" james and i are the subject (noun and proper noun) talked is the verb etc.. thanks

  44. science

    Why was the discovery of microspheres and coacervates an important contribution to the understanding of how life might have originated on Earth?

  45. English

    what does this saying mean? "The whole is greater than the sum of its parts"

  46. math

    what is the the diameter of a circle in km if the area is 5.65 miles? i don't know how to convert miles into km so please help.

  47. college physics

    The space shuttle releases a satellite into a circular orbit 550 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?

  48. Math-Please Check Work!

    Find the image of P(5,-3)under each of the given transformations: 1. r x-axis(5,-3)? 2. Rorigin (-5,3)? 3. R90 (3,5)? 4.T 0,3 (5,0)? 5.r x-axis o T2,2 (7,1)? 6. r x-axis o r y=x (-3,-5)? 7. r y=x o r x-axis (3,5)? 8. R(2,2) o T5,-3 (12,-4)? Thank you!

  49. algebra

    charlie has 80 ml of a 15% acid solution how much of a 20% acid slolution must be added to create a solution that is 18% acid.

  50. Chemistry

    A 10 gram of mass of krypton occupies 15.0 L at a pressure of 210 kPa. What is the volume of the krypton when the pressure is increased to 790 kPa?

  51. 5th grade math

    The library has 2,000 books. The books are sorted 500 children,fiction and nonfiction. There are 200 more fiction than nonfiction. How many fiction and nonfiction books are there? There are 950 fiction books and 550 nonfiction books is my answer how would

  52. Business Management questions

    CASE 1—E-Biz Dreams Robert Downs has just completed a Master of Science degree in computer science at Major State University. He now wants to begin a new Internet business selling his services as a Web site maker for companies in his home city, St.

  53. Chemistry

    How much heat is required to warm 225g of ice from -48.6C melt the ice warm the water from 0.0C to 100.0C boil the water and heat the steam to 173.0C

  54. Chemistry

    Calculate the initial molarity of KNH2 and the molarities of K+, NH3, OH-, and H3O+ in an aqueous solution that contains 0.75 g of KNH2 in 0.255 L of solution. You may ignore the reaction of NH3 with water. I already found the initial molarity, but I am

  55. Biology

    Do prokaryote cells and eukaryote calls both go through the M phase or does just eukaryote cells? Then what does prokaryote cells go through in the cell cycle? thanks:)

  56. Math

    Thirty percent of the liquid evaporated. If 560 milliliters remain, how many milliliters evaporated?

  57. English-Ms. Sue

    Have you ever seen the movie, "The Mighty", some people refer to it as "Freak the Mighty". I have a few questions on it, but before I post them here, I'd like to know if you've ever watched it. Thanks

  58. Math

    Find three consecutive integers such that the sum of the first and second is three mose than three times the third. When I did the problem,I got a negative answer. Does that seem correct? Did I make any mistakes?

  59. Science

    I know what a baseline is, but what baseline is used in astronomy? y do we need vary the length of baselines we use? is it the diameter of the earh's orbit? I really do not get the 2nd part.

  60. College Accounting

    A company had stock outstanding as follows during each of its first three years of operations: 2,500 shares of 10 %, $100 par, preferred stock and 50,000 shares of $10 par common stock. The amounts distributed as dividends are presented below. Determine

  61. math

    Write an equation of the line satisfying the given conditions. A line perpendicular to y=2+3x

  62. Physics

    A horse is trotting along pulling a sleigh through the snow. To move the sleigh, of mass m, straight ahead at a constant speed, the horse must pull with a force of magnitude T. What is the net force acting on the sleigh? What is the coefficient of kinetic

  63. Algebra

    Solve. -8x-25= -27 and 2/3. My answer is x= -1/3. Is this correct? Thanks.

  64. physics

    What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/45 of its value at the Earth's surface?

  65. Science

    About how old is our sun? about 5 billion years old?

  66. home economics social and scientific

    explain three food imports and three food exports in the irish food industry

  67. geography

    which of the following group of rocks can be easily dissolved in water? a,sandstone,granite and obsidian b.limestone,granite and basalt c.quartz,schitz and chalk d.limestone,chalk and sandstone

  68. statistics

    True or False A negative z score must yield a negative probability value.

  69. Physics

    The Nuclues of a Manganese atom has a net charge of +4E-18C. Its nearest electron is located 4E-10 m from the nucleus. What is the electrostatic force between the nucleus and the electron? (Hint:what is the charge of the electron? Not 1!) I believe that

  70. Science

    with 1*10 to the power of 22 stars in the sky. List several factors that limit us to being able to see only about 2000 to 3000. *shape of the galaxy *size of the galaxy *The sun's light *light reflection from earth *light pollution *lackness of darkness

  71. ecology

    How do cultural influences lead to genetic changes in populations

  72. Math

    Can you please help me with this equation. we have to factor x to the power of three equal 25x.can u help me with it?

  73. bussiness

    I believe innovation will come from outside the mainstream music .... If you are a record producer or engineer, create other products to produce. ... If you think you can survive in the recorded music business, find something else to sell. .... and

  74. Geography

    #49. It has been said that Eastern Europe is a political region more than a physical region. Would you agree or disagree with this statement? You must provide a solid argument for your position. I'm not sure if I've posted this up already, but here's what

  75. information technology

    discuss the concept of teleconferencing and telecommuting.

  76. physics

    a standing wave oscillating at 115 Hz on a string. The distance d between the two walls equals 65 cm. What is the wave speed?

  77. Science

    as u line up ur thumb with an object in the distance and see ur thumb "jump" compared with the object, what did u do and what baseline did u use? Can someone please explain this to me more clearly, thanks

  78. math

    how would you build arrays for 7x4

  79. Geography

    What is the capital of Bulgaria?, and what is Bulgaria's most populated city?

  80. Science

    explain role of gravity in formation of a star. as a star starts to form as a nebula, small amounts of matter collide and stick together, becoming larger masses with increasingly stronger gravity. Am I correct? Please add any other info, thanks

  81. geography

    in the caribbean the potential for hydro electric power is greatest in which of the following groups of territories? a.Trinidad,Jamaica and Barbados b.Guyana,Jamaica and belize c.Trinidad,St.Lucia and St.Kitts d.Guyana,Barbados and the vergin island

  82. information technology

    what are coaxial cables.fibre optic cables and twisted pair cables?

  83. information technology

    describe the network of presentation of rind,star ,bus

  84. social studies

    who is the 19 president

  85. Physics

    An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at

  86. information technology

    what are some negative impacts of sharing information on a network?

  87. chemistry

    Write the condensed structure for Methylpropyl ether Would it be C4H11O? CH3-O-CH3CH2CH3

  88. Composition-7th Grade

    For almost every news event, there are different opinions people can hold. Some people choose to send their opinions directly to the news source in the form of letters. In this lesson, you will scour the news for a topic on which you hold a strong opinion.

  89. chemistry

    If the following thiol containing compound is oxidized, what product will be obtained? CH3-SH --> Can someone please help me with this? The only examples my book has are with two S, so I don't know how to do it with just one S. Thank you!!

  90. PHYSICS

    The frequency of an ambulance siren is 700 Hz. If a pedestrian on the side of the road hears the siren at 756 Hz approximately how fast and in what direction is the ambulance moving? The answer is 90 km/h and towards the person..im not sure how to come to

  91. information technology

    discuss the following wireless transmittion medium: 1.satillite signal 2.micro wase link 3.infrared signal

  92. English

    As you suggested to me, I omitted all the question marks. Can you please check if all the sentences are grammatically correct? 1) Avoid repeating concepts over and over again and making personal. comments which you cannot substantiate. 2) Try to stick to

  93. communication

    can anyone tell me a tv show or movie that has misconceptions about listening?

  94. Science-Jiskha teacher

    Can any jiskha teacher who knows about this subject well, please look at my other previous science posts to check to see if they're correct and all, bacause someone named bob has been going through them, and just saying that they're right, but I'm not too

  95. French

    I need to fill out this paragraph with what my class calls "des petits mots" but I'm so confused! Could someone help me? "Les forêts __1__ nous avons le __2__ besoin __3__ trouvent en Amazonie. Cette vallée est un domaine naturel qu'il faut préserver

  96. geography

    one of the most recent benefits of the mountaineous regions of some caribbean islands,with their numerous rivers is: a.logging and recreation b.mining for gold and water sports c.eco-tourism and recreation d.hiking and hunting

  97. algebra

    s over 5 = 4 over 3

  98. math

    how do you factor problems like (w^3)(x^2)-(10w^3)(x)+25w^3?

  99. 8th Grade Math

    Draw and label a rectangle whose area is represented by the following expression; (x+1) (x+5). Then write an equivalent expression in expanded form. I have absolutly no clue how to do that. :/

  100. Algebra

    I am confused by this problem. Solve: Clear fractions or decimal first. 7/3x-1/3x=3x+24/3-1/3+7/3x. I know that I need to gather all terms first. My answer that I came up with was: -23/17. I'm sure that answer is wrong. Can someone please help? Thanks.

  101. Geography

    what does balkanization mean?

  102. geography

    the wide looping curves which are found along parts of the courses of some rivers are called: a.meanders b.flood plains c.river bluffs d.ox-bow lakes

  103. Chemistry

    f the molecular mass for a chemical is 153.82 g/mol and the enthalpy of formation is -135 kJ/mol, the heat change will be kJ when 10.0 g of this chemical is formed.

  104. Chemisrty

    what mass of sodium phosphate is required to make 250mL of 0.10mol/L solution?

  105. Chemistry

    When 0.702 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 114C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

  106. economics

    When using 400 printers and 200 printing presses to produce books. A printer's wage rate is 20, and the price of printing press is 5,000. The last printer added 20 books to total, while the last press aded 1,000 books to total output. Is this an optimal

  107. chemistry

    A 355g sample of a saturated solution of KNO3(s) in water is prepared at 25.0 degrees C. If 50g H2O is evaporated from the solution at the same time as the temperature is reduced from 25.0 to 0.0 degrees C, what mass of KNO3(s) will recrystallize? i have

  108. math

    determine wether the following lines are parallel, perpendicular or neither. y=20x+45 and y=-1/20x+81 they are perpendicular right?

  109. geography

    a delta is a: a.wid river mouth where tides are experienced b.long narrow arm of the sea resulting from the submergence of a glaciated valley c.fan-shaped piece of land at the mouth of a river,resulting from deposition by the river d.funnel-shaped drowned

  110. geography

    natural banks which are sometimes built up by a river along the edges of its channel are called: a.river bluffs b.river cliffs c.levees d.slip-off slopes

  111. physics

    The current of a river is 1.9 m/s. A person can swim 0.7 m/s. What is the best angle for the swimmer so that it is swept downstream the shortest distance possible? Distance of river is 120 m.

  112. physics 101

    No glass is perfectly transparent. Mainly because of reflections, about 90% of light passes through an average sheet of clear windowpane. The 10% loss is not noticed through a single sheet, but through several sheets it is apparent. How much light is

  113. geography

    what causes deferred junctions on on rivers flood plains? a.swamps b.ox-bow lakes c.raised riverf banks d.river cliffs

  114. math

    what is 350m 60s 1km ? ____ X____ X _____ 1s 1min 1000m someone help me, i don't know how to do this problem.

  115. physicsc

    Two 7.4 resistors are connected in parallel, as are two 4.9 resistors. These two combinations are then connected in series in a circuit with a 11 battery. What is the current in each resistor? What is the voltage across each resistor?

  116. Computers

    To create a software environment, a programmer must define the _____ for each element in the environment. a)properties b)keys c)ranking d)order I think it is a) properties, but I am having a difficult time locating the answer in my text to make sure.

  117. math

    how do you simplify a number with aa fraction exponent such as : 32^1/2

  118. English

    1.What is the meaning of the term "hip hop feminist"? 2.Why are there no female voices in hip hop music today?

  119. English

    3.Why are there so many sexualized images of women of color in the media? 4.Can a man be a feminist? Why or why not?

  120. geography

    which of the following is correct sequence in the formation of an ox-bow lake? a.meander,cut-off,narrow neck of meander,flooding b.meander,narrow neck of meander, flooding,cut-off c.cuy-off,flooding,narrow neck of meander,meander d.narrow neck of

  121. colllege physics

    What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/45 of its value at the Earth's surface?

  122. information technology

    what is the network of presentation of rind,bus,star?

  123. Accounting

    The following questions contain numbers and you have to do different things with the number in each question. I'm not sure of the steps to take to figure out each answer. And, when I try to do what the book shows me I come up with wrong answers. So if you

  124. 9th grade

    good public speaking topics?

  125. information technology

    what is teleconferencing and telecommuting?

  126. reimbutsement

    services under the outpatient prospective system are paid based on?

  127. physics

    A 25.0 kg block is pulled 4.5 meters up a 20° rough incline by an applied force Fa = 200 N, directed up the ramp. The block starts from rest and has a final speed of 1.5 m/s. Find the following: a) The total work done on the block, Wtot =___ J b) The work

  128. business

    Daily demand for a product is 60 units with a standard deviation of 10 units. The review period is 10 days, and lead time is 2 days. At the time of review, there are 100 units in stock. If 98 percent service probability is desired, how many units should be

  129. Physics

    A horse is trotting along pulling a sleigh through the snow. To move the sleigh, of mass m, straight ahead at a constant speed, the horse must pull with a force of magnitude T. What is the net force acting on the sleigh? What is the coefficient of kinetic

  130. Maths

    When a die is rolled three times, 1. what is the probability of three no.s being all different? 2. And is the opposite of that event two or three no's being the same?

  131. math

    how do you find possible dimension of a rectangular prism that has a volume of 320 in3

  132. Maths

    There is exactly the same number of lollies in 10 different colours in a jar. (If one lolly is picked out , the probability of

  133. physics

    The lowest note on a grand piano has a frequency of 28.1 Hz. The entire string is 2.00 m long and has a mass of 440 g The vibrating section of the string is 1.90 m long. What tension is needed to tune this string properly?

  134. Math

    There is exactly the same number of lollies in 10 different colours in a jar. (There are thousands of each lolly) If one lolly is picked out , the probability of being one colour is 1/10 and the second being same colour is also 1/10

  135. information technology

    what are satillite signals?

  136. Math

    If 3 people are asked what day of the week they were born, find the probability that i) 2 or 3 are the same. ii) only 2 people are the same. - is this 1/7 x 1/7 ?? If 4 people are asked what day of the week they were born, what is the probability that 2 or

  137. Chemistry

    I have a question about uncertainties. For example, I have 1466.5J +/- 0.6J. Do I match the sig digs (in which case it would become 1466.5J +/- 0.60713) or do I match decimal places? It makes sense to me to match decimal places, am I right?

  138. amercian government

    dramatic change in public opinion on basic issues is uncommon and is almost always a cosequence of?

  139. math

    Im good and all at math but I have a question this isn't tricky its like a math brain buster!Suppose you round each group of numbers to the nearest ten.which group of numbers all roundto the same number? A.423,418,426 B.376,378,384 C.255,253,251

  140. economics

    How could a tax cut achieve the same result? Would the tax cut have to be larger than the increase in government purchases? Why or why not?

  141. information technology

    what are micro wase links?

  142. chemistry

    is CaO soluble

  143. college

    A sports car of mass 1300 kg (including the driver) crosses the rounded top of a hill (r = 86 m) at 23 m/s. Determine the normal force exerted by the road on the car. Determine the normal force exerted by the car on the 74 kg driver. Determine the car

  144. information technology

    waht are infrared signals?

  145. chemistry

    When filling the buret with NaOH solution, you left an air bubble in the buret tip. The bubble was released durning your first KHP titration. Would the following technique error result in an erroneously high or reeoneously low calculated molarity of NaOH

  146. Calculus

    Could someone please help me with this question; Find the tangent to the curve y=x^2-8x+14 which slope is -2. Show that this tangent touches the curve y= -x^2-4x+4. Find the point of contact. Thank you.

  147. ecology

    who was the leader of the aztecs

  148. information technology

    what are coaxial cables?

  149. math

    if you had m^0g^0 would you leave it in that form or would the simplified version be 1?

  150. social studies

    what were 3 options for Lord Elgin and the supporting reasons and the consequences

  151. information technology

    what are fibre optic cables?

  152. information technology

    what are twisted pair cables?

  153. Geography

    what dose colonization mean

  154. physics

    At what rate must a cylindrical spaceship rotate if occupants are to experience simulated gravity of 0.52 g? Assume the spaceship's diameter is 30 m, and give your answer as the time needed for one revolution.

  155. Science

    Y r the distances to the planets given in km, while the distances to stars & galaxies r given in light years? I am really stumped on this quest. I think because the universe is so huge that it would be way too dificult to measure distances to stars and

  156. Science

    Hello, could someone help me with this question please? Explain how burning wood or coal to heat your house may contribute to global warming by altering the energy balance at the Earth's surface? Thank you

  157. Chemistry

    When 0.945 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 387C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

  158. Science

    I know what a baseline is, but what baseline is used in astronomy? y do we need vary the length of baselines we use? Is the baseline the diameter of the earth's orbit? I really do not get the 2nd part.

  159. Chemistry

    When 0.655 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 107C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

  160. Science

    with 1*10 to the power of 22 stars in the sky. List several factors that limit us to being able to see only about 2000 to 3000. *shape of the galaxy *size of the galaxy *The sun's light *light reflection from earth *light pollution *lackness of darkness

  161. physical science

    A driver starts his pack car and withinn 5 seconds reaches a velocity of 55km/h as he travels east. What is his acceleleration?

  162. teaher aide

    which of the following class arrangement works best for individual study traditional horseshoe modular y-shaped

  163. Physics

    A crate full of artichokes rests on a ramp that is inclined 10.0° above the horizontal. Give the direction of the normal force and the friction force acting on the crate in each of these situations. (a) The crate is at rest. Normal Force : 1.perpendicular

  164. Grade 2 english

    Hi What is the hidden word in the following letters- panirlea Thanks

  165. Chemistry

    A gas storage tank has a volume of 350,000 when the temperature is 27 degrees celcius and the pressure is 101 kPa. what is the new volume of the tank if the temperature drops -10 degrees celcius and the pressure drops to 95 kPa? please show work.

  166. PHYSICs

    You blow a whistle of f=909 Hz as you move towards a wall. The fbeats you hear from the whistle is 14beats/second. How fast are you moving towards the wall?

  167. eng college

    Can someone please help revise. It is a proposal for a research paper! Thank You! Work and family are both central to our way of life. Finding a balance between the two is an issue of importance to men, women, and employers. Therefore, I will argue that

  168. Biology

    40. Explain two benefits that a child affected by a genetic disorder could expect from genetic counseling and testing. Need help with this Thanks -MC

  169. social studies

    Back during John F. Kennedy's time in office has president what were the positives and negatives of pursuing diplomacy in Cuba, blockading Cuba, and air strike and invading Cuba?

  170. Chemistry

    If 5.00 mL of HCl require 4.59 mL of 0.9581 M NaOH to just consume the HCl, what is the concentration of the HCl?

  171. Chemistry

    A mixture of gasses at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2, is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?

  172. 5th Grade Social Studies

    What are the names of the first 3 English settlements?

  173. social studies

    the appalachian mountain extend north from the united states into the canadian provinces of ______,______ ______,______ _____ _____,and _______

  174. social studies

    the great plains of canada are found in the canada provinces of

  175. geometry

    A rectangle is twice as long as it is wide. Its perimeter is48 cm. Find its dimensions

  176. Geometry

    Given: X, Y, and Z are the midpoints of the sides of triangle ABC. Find rhe ratio of the area of triangle XYZ to the area of triangle ABC

  177. Wrld Hst

    What did Margaret Cavendish believe/ talk about in her book Philosophical Fancies? thanks:)

  178. math

    Factor the expression on the lift side of each equation. Then solce the equation: 8xcubed-27=0... also please show work so I understand how you got the answer.

  179. Chemistry

    In a run involving 1.00 mL 2.50 * 10^-3 FE and 1.00 mL of 2.50 * 10^-3 SCN solutions made up to a total volume of 10.0 mL, the concentration of complex formed at equilibrium was found to be 4.44 * 10^-5. What are the equilibrium concentrations of Fe^3+ and

  180. social studies

    what are the causes and effects of the Opium War?

  181. Chemistry Lab

    5.00 mL of .00500 M ferric nitrate is added to 5.00 mL of nitric acid and 10.0 mL of .00250 M thiocyanate solution. Calculate the intial Fe^3+ concentration before reaction. So how do I go about doing this?

  182. physics

    what type of energy does an object at rest, but raised above the ground have?

  183. Physics

    While blowing its horn of f=524 Hz a car accelerates at 0.8m/s^2 the car starts from rest by your side and moves away. Find the time it taked for the frequency you hear to decrease by 5%. Hint: Don't forget to include the time it takes for sound to reach

  184. algebra

    how do i solve this? 16x^2,40xz^2,72z^2 I know its 8z GCF, but how is it done?

  185. Algebra

    Could someone please help me with this problem? Solve using the multiplication principle. Don't forget to check. -z=35. The solution is z=

  186. Statistics

    True or False Probabilities may take on negative values only when the events are occurring less than 50% of the time.

  187. social studies

    is it new brunswick,quebec,prince edward island,and ladrodor and thank you ms.sue

  188. Statistics

    True or False Probabilities may take on negative values only when the events are occurring less than 50% of the time.

  189. 4th grade

    Write 3 different improper fractions that equal 4 and 2/3

  190. History

    How did the missouri compromise attempt to settle the debate over the future of slavery in the growing american republic? I have to write an essay and I just want to get an idea.

  191. French immersion grade 5 math perimeters

    My child needs to write out equations for various shapes on grid paper, using French. Finding the perimeter eg:P=(L+L)x2 also finding the Area. The shapes are complex, and I am lookin for help in figuring out how to write the equations properly, using the

  192. Physics

    An automobile tire contains a certain volume of air at 30 psig and 70 °F. The barometric pressure is 29.50 Hg. If due to running conditions, the temperature of air in the tire rises to 160 °F. What will be the gauge pressure? Assume that air is an ideal

  193. Chemistry

    What major product will be obtained if the following alcohol is dehydrated: CH3 | CH3CH2CCH3 | OH I tried to do it and this is what I got: CH3 | CH3CH=CCH3 Is this correct?

  194. social studies

    what did the British goverment need to tax the coloines

  195. science

    why does mold grow faster in warmer temperature

  196. Chemistry

    CORRECTION: (sorry!) What major product will be obtained if the following alcohol is dehydrated: CH3 | CH3CH2CCH3 | OH (the CH3 is connected to the 3rd Carbon from the left and the OH is attached to the same Carbon) I tried to do it and this is what I got:

  197. 12th grade

    The electric field between two parallel plates connected to a 40 V battery is 1550 V/m. How far apart are the plates?

  198. Antrophology

    i need help on the this assigments can some one please help me and thanks. Are [r] and [I] allophones of one or two phonemes? A) Do they occur in any minimal pairs? B) Are they occur in any complementary distribution? C) In what enviroments does each

  199. Algebra

    Solve using the multiplication principle. -4/5x=16/35. (5)-4/5x=16/35(5) -4x=180/175 Now I'm lost. What do I do now? Thanks.

  200. Chemistry

    How will you prepare 10mL of .050 M HCl from a .10 M solution of HCl?

  201. Science

    Y r the distances to the planets given in km? I've already answered the 2nd part to this question, and this is the fist part. I think that the distances to the planets are given in kilometres because all the planets aren't that far away from eachother that

  202. 4th grade math

    nick had 1 and 3/4 gallon of milk how many pints of milk does nick have hint there are 8 pints in 1 gallon

  203. please help

    can someone please revise?? only a proposal Work and family are both central to our way of life. Finding a balance between the two is an issue of importance to men, women, and employers. The current work standards in United States and the lack of family

  204. ratio

    if 3 out of every 7 student are boys , write equivanent fractions that can be used to determine how many out of 84 are boys. use a variable to represent the number of boys help me please i need it for tomarrow

  205. English

    I forgot to include the following sentences. Thank you a lot! 1.Avoid repeating concepts over and over again and making personal comments which you cannot substantiate .. (?). Try to stick to the question. 2.Antony doesn’t care about the good of Rome (is

  206. Business Math

    Deduct Social Security, Medicare and FIT (by percentage method) from earnings. SS rate is 6.2% on 97,500 and 1.45% for Medicare. Richard is $1000 below the maximum level for SS earnings. He is married, paid weekly and claims 2 exemptions. What is Richard's

  207. English

    How should I start an example essay?

  208. geometry

    what is the area of a regular quadrilateral (square) that has a radius of 10 square root of 2. The 10 square root of 2 is the x^2 (the hypotenuse) part of a 45-45-90.

  209. English

    I nees help with infinitive phrases and if it is a noun, adj., or adv. My question is: The political prisoner refused to denounce his principles.

  210. English

    Could you check this for me and give me some ideas on how i could expand my writing? The Extra Yard Plus size women tend to make fashion less of a priority and more of a chore. Finding fashionable plus size clothing has become close to impossible, with the

  211. Math

    What are the similarities and differences between functions and linear equations? How do you graph functions on a coordinate plane? Is there an instance when a linear equation is not a function? Provide an example. Write a function for your classmates to

  212. Physics

    Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How much mercury can be poured in before the mercury overflows? Assume air to act like an ideal gas. The long and short arms are 1 m

  213. Physics

    Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How much mercury can be poured in before the mercury overflows? Assume air to act like an ideal gas. The long and short arms are 1 m

  214. 5th grade math

    If you get 1 free car wash every 5th wash and you wash your car once a week,how many free washes would you get in a year? Would the answer be 10 washes? Number of weeks divided by 5?

  215. Calculus

    Could someone please help me solve this If f(2)=f'(2)=g'(2)=g(2)=2, find (fg)'(2). How would I solve this, I am completely lost as to what I would do.

  216. Child Day Care Management

    The formation of children's core values is most strongly influenced by: a) peers b) family c) elemantary school teachers d) child care providers

  217. accounting

    These questions are so confusing. So I was wondering what are each of the formulas to solve each question or what steps I need to take to complete them? I've been trying and I can't find the correct answer. ____ 11. The Dayton Corporation began the current

  218. Science

    Impact of California Water Wars on the Owens Valley?

  219. Child Day Care Management

    The most developmentally appropriate activity for a group of eleven-year-olds would be: a) coloring b) reading silently c) playing Twenty Questions d) surfing the internet

  220. physics

    Consider an object on which the net force is a resistive force proportional to the square of it's speed? For example assume the resistive force acting on a speed skater is f = -kmv^2, where k is a constant and m is the skater's mass. The skater crosses the

  221. arithmetic

    A job is shared by 4 workers, W, X, Y, and Z. Worker W does 1/4 of the total hours. Worker X does 1/3 of the total hours. Worker Y does 1/6 of the total hours. What fraction represents the remaining hours allocated to person Z?

  222. english

    can somepne help me on parallel structure? i really don't get it. can u make this a parallel a structure because i don't know how. Do you calue the democratic right to freedom of speech? Maybe you want to announce something. Or is there an issue you think

  223. Science

    Thanks for the applet.Am I right in thinking blackbodies radiate at all wavelengths but only very little at short wavelenghts if cooler?

  224. PHYSICS

    Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A particle of charge -4.5 mC and mass 75. mg accelerates under the effects of the electric field caused by the disk, from a point at a perpendicular distance from the center of

  225. computer history

    what are all the anser

  226. PHYSICS

    a 123 kg man space finds himself 60 m away from his space ship and wants to get back. he holds a 2kg space gun which fires 5.00g bullet at a rate of 1500m/s. if he fires a single bullet in a direction directly away from the spaceship, how long would it

  227. science

    What has more mass a elephant , mouse or jumbo jet?

  228. algebra

    7x+3-4x

  229. physics

    A sports car of mass 1300 kg (including the driver) crosses the rounded top of a hill (r = 86 m) at 23 m/s. Determine the normal force exerted by the car on the 74 kg driver. Determine the car speed at which the normal force on the driver equals zero.

  230. To; Ms. Sue

    Ms. Sue have you heard of the "The knights of the round table"?

  231. History

    i need a good website to find stuff on catherine the great

  232. 9th grade

    At what height is an object that weighs 490 N if it gravitational potential energy is 4900 N-m?

  233. programming

    Week 3 - Expand Pseudo Code The accounting office indicated the code must be able to handle overtime hours. Add functionality to your pseudo code so that if more than 40 hours are worked, the hours over 40 receive time and a half (1.5 * pay rate). Your new

  234. math

    write a variabe expression to describe the rule for each sequence. then find the 100th term. 100, 200,300,400.....

  235. Math

    What is width of a billboard that has a height of 30 ft?

  236. college

    if distance is 59 cm and the weight is 3 kg then what is the distance when the weight is 9 kg

  237. 9th grade Social Studies

    what is the climate and the population&cities in the hudsons bay lowlands & appalachian region ?

  238. math

    z varies with w and z=30 when w=0.6 what is the constant proportinal? what is z when w=10

  239. 2nd grade

    do all rocks come frome lava

  240. math

    One year interest of $500 on an investment of $5000

  241. college

    Calculate the force of Earth's gravity on a spacecraft 12,800 km (2 Earth radii) above the Earth's surface if its mass is 1550 kg.

  242. us history

    Write an Essay about the different perspectives that a chinese native and a christian missionary might have had on the Boxers rebellion

  243. English

    I really need help with my english homework which has to do with infinitve phrases that are noun, adj, or adv. My question is: Prospective team members must promise to attend regular practice sessions.

  244. english

    the clerk will wait on ( whom,who,whomever,whoever) is next. my answer is (whom) is this right

  245. math

    Factor the expression on the left side of each equation. Then solve the equation. 64x^3-1=0

  246. physics

    An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at

  247. mathy

    if you had m^0g^0 would you leave it in that form or would the simplified version be 1?

  248. math

    if given y=6x^4 if x doubles what happens tp y?

  249. Grammar

    What is the type of infinitive phrase is it? a noun, adj., or adv.? The hill above the town is the best place to watch the fire works.

  250. math

    if given ..,. y=4x^-4 if x triples what happens to y?

  251. ESL

    PRESENT PERFECT AND SIMPLE PAST WRITING

  252. Social Studies

    What were the conditions of the mines during the Industrial Reolution? Why did so many women want to work in the mines without clothing and have heavy belts around their waists and chains between their legs?

  253. biology/science

    Biotechnology allows us to use living organisms or their processes for human needs or purposes. Currently, this topic includes such general examples as cloning, stem cells (adult, umbilical cord, and embryonic), DNA fingerprinting, biological warfare,

  254. Accounting

    ____ 2. As part of the initial investment, Omar contributes accounts receivable that had a balance of $25,000 in the accounts of a sole proprietorship. Of this amount, $1,150 is completely worthless. For the remaining accounts, the partnership will

  255. Advanced Math

    Solve 3-3 csc x = 17 for (theta) is less than or equal to x is less than 2(pi); give answer to the nearest 100th of a radian

  256. physics

    a particle that has a charge of +12.8E-19 C and a mass of 8.0E-27kg is moving along the +x axis at a constant speed of 2.0E10 m/s. it then enter a region where the eletric field of 300 N/C is directed along thr +x axis. calculate the particles displacement

  257. Science-drwls

    Y r the distances to the planets given in km? I've already answered the 2nd part to this question, and this is the fist part. I think that the distances to the planets are given in kilometres because all the planets aren't that far away from eachother that

  258. science

    how will ocean energy be used

  259. Chemistry

    How much heat is required to vaporize 343g of liquid ethanol at its boiling point? ΔHvap+38.6 Kj\mol

  260. Chemistry

    how much heat is liberated by the combustion of 206 grams of hydrogen? ΔHcomb= -286kj/mol

  261. geography

    teh type of erosion mainly found on the upper course of rivers are: a.hydralic action,lateral and abrasion b.hydralic action and solution c.abrasion and solution d.hydralic action and attrition

  262. Question about the board

    I am looking at many questions that just have 2 or 3 words to them and responses that talk about fixing certain paragraphs. Am I missing something or is the board messing up?

  263. physics

    At what rate must a cylindrical spaceship rotate if occupants are to experience simulated gravity of 0.52 g? Assume the spaceship's diameter is 30 m, and give your answer as the time needed for one revolution

  264. just wandering

    Are there like new words being created everyday? Are there new dictionary terms/words being created everyday?

  265. College Algebra

    Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Why or why not?

  266. us history

    In the homestead act - Who is entitled to secure a grant of land from the Federal Government? Can women secure such a grant in their own names, and if so, how?

  267. social studies

    Help!!! I need help woth Latin definion and finding the word to go with it .What is a good website to use? or just any help it this!!

  268. Algebra

    Can you please explain this problem to me? Determine whether 30 is a solution of the equation x-13=14. Is 30 a solution? My answer is no. x-13=14 30-13=14 No, not true. Thanks.

  269. Math

    An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How

  270. Chemistry

    A gas occupies a volume of 140 mL at 35 degrees celsius and 97 kPa. What is the volume of the gas at STP?

  271. math

    write each number as a power of 2 1.1/8 2.square root of 2 3.3/4 how do you do it???

  272. psychology

    how is erikson's development theory applicable to children today? Did he use science to back up his theory? Could you help me find a good site. None that I've looked at have been able to help me with my essay.

  273. Science

    with 1*10 to the power of 22 stars in the sky. I can't put 22 in small form above 10, so that's why I'm wording it by saying to the power. So: with 1*10 to the power of 22 stars in the sky. List several factors that limit us to being able to see only about

  274. biology

    the adaptations of land dwelling organisms for getting oxygen show a trade off of two needs. What are they?

  275. algebra

    given f(x)=2x^2-4 and g(x)=5x+3 1. f(a) 2. f(3a) 3. f(a+b) 4. f(x+7) 5. f(5x+3) 6. g(f(x))

  276. Psychology

    How much time and energy do you invest in making sure you aren't guilty of the fundamental attribution error or the self-serving bias?

  277. Science

    Y r the distances to the planets given in km, while the distances to stars & galaxies r given in light years? I am really stumped on this quest. I think because the universe is so huge that it would be way too dificult to measure distances to stars and

  278. World History

    How did colonies with large European populations differ from other colonies?

  279. Help !! Mrs.Sue!!!!!

    Help!!! I need help woth Latin definion and finding the word to go with it .What is a good website to use? or just any help it this!!

  280. Math

    3x-2 over 2 (fraction format) -x over 4 (fraction format) = 15. I know that I need a LCD but when I tried 2 it didn't seem to work right. the only hint my math teache gave was the answer has to be a mixed number. Can anyone help?

  281. English

    What are some tips to compare and contrast a poster?

  282. English

    Thank you for your last corrections. Can you check these statements, too? Thank you very much. 1)They finally arrived on an island, where once had lived the witch Sykorax and which was inhabited now by her son Caliban and Ariel, the spirit of air.

  283. Chemistry please help!

    Please help. I have no idea how to do these 4 homework problems. 1- How many milliliters of 0.140 M HCl are needed to completely neutralize 42.0mL of 0.106 M Ba(OH)2 solution? 2-How many milliliters of 0.123 M H2SO4 are needed to neutralize 0.250 g of NaOH

  284. physics

    A light wave has a 670 nm wavelength in air. Its wavelength in a transparent solid is 376 nm. (a) What is the speed of light in this solid? (b) What is the light's frequency in the solid?

  285. algebra

    What are the similarities and differences between functions and linear equations?

  286. spanish

    what are the direct object pronouns in the following sentence Buena, hoy hacemos una ensalada de frutas, con naranjas, un melon y uvas. vamos a sazonarla con jengibre y menta. Aqui tengo las naranjas las he pelado y las voy a cortar en rodajas.

  287. geography

    what are the branches of the river within the delta called?

  288. English

    I'm writing a persuasive essay about how women with HIV should not be allowed to have children. Can you please help me find some reliable sources about my topic? Thank you.

  289. Math

    When Clint began his pursuit, Sue was already 60 miles ahead. If Sue travels at 40 mph and Clint travels at 60 mph, how many hours will it take Clint to catch up with Sue? It is a distance problem I do know that. I am not sure what type. Either + or =. I

  290. math

    the height, in feet, of a free-falling object t seconds after being dropped from an initial height s can be found using h=-16t^2+s. An object is dropped from a helicopter 784 feet above the ground. How long will it take the object to land on the ground?

  291. English

    Helllo I writing a poem about my p.e.team,can you please read my work and say what you think about it.Thanks I was delighted when I found out I was in Catherine Because Green was my favourite colour.

  292. Science

    clarify why parallax just works for stars that r less than 200 light years away. It is because of the smaller angles involved in the greater distances, which cause to many observation errors for calculations to be valid. Please correct me if I'm wrong,

  293. Geography

    What does Mississippi rank in size and population? Please help! Thank you.

  294. math

    Solve. The total sales made by a salesperson were $25,000 after 3, months and $68000 after 23 months. Predict the total sales after 42 months. 25000=3months 68000=23 months x=42 months how do I do this?

  295. geography

    some material or load of the river is transported by dumping or hopping from one point to another by force of the water.this is called: a.traction load b.saltation c.solution d.suspension load

  296. math

    Without graphing, identify the slope and the y-intercept. x-5/3=y/3 first you set it up as y=mx+b -y/3=x+5/3 how do you get rid of the 3's?

  297. Misc

    Just wondering, after you become widowed, do you still put 'Mrs.' in front of your title, or not? -MC