1. Calc

    Ralph is taking his final exam. After t minutes into the exam Ralph has correctly solved P(t)=-.001t^3+.078t^2+.16t problems. a) at what time was Ralph solving problems most efficiently? b) at what time did Ralph's efficiency decline?

    asked by Britt on December 9, 2007
  2. Chemistry

    Quick question: How can I be sure that a slow reaction is not running out of reagents? Thanks The question is too general for a quick answer. Depending upon the reaction, intensity of color (either decreasing or increasing) might be one way, the odor of a

    asked by Chrissy on April 24, 2007
  3. trig

    A spring is attached to the ceiling and pulled 17 cm down from equilibrium and released. After 3 seconds the amplitude has decreased to 16 cm. The spring oscillates 13 times each second. Assume that the amplitude is decreasing exponentially. Find an

    asked by Tricia on August 17, 2014
  4. physics

    a 65 kg object is pulled at a constant velocity up an incline w/ a force of 95 N parallel to the incline. Assuming that the difference between the work output and input is work required to overcome friction, what is the force of friction along the incline

    asked by Jun on April 8, 2011
  5. math

    1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within

    asked by Sequoiao9 on May 22, 2010
  6. Finance

    AQ&Q has EBIT of $2 million, total assets of $10 million, stock holder’s equity of $4 million, and pretax interest expense of 10 percent. a) What is AQ&Q’s indifference level of EBIT? b) Given its current situation, might it benefit from increasing or

    asked by Anonymous on June 15, 2013
  7. Finance

    AQ&Q has EBIT of $2 million, total assets of $10 million, stockholders' equity of $4 million, and pretax interest expense of 10 percent. A. What is AQ&Q's indifference level of EBIT? B. Given its current situation, might it benefit from increasing or

    asked by Anonymous on March 5, 2013
  8. Math-precalc

    Is it possible to find a rational function that has x-intercepts (-2,0) and (2,0), but has vertical asymptote x=1 and horizontal asymptote of y=0? The horizontal asymptote and the x-intercepts parts stump me. If you can't reach y=0, then how can you get

    asked by Pamela on July 7, 2007
  9. Math

    Find the intervals on which the function is increasing, decreasing, concave up, or concave down and find any local extreme values and inflection points. So I know how to do the above, but not with piece wise functions. Someone help me out? Y={3-x^2, x=0} I

    asked by Beth on February 3, 2016
  10. Bio

    The type of cartilage associated with bone function and development is what? I know that the elastic cartilage contains elastin which allows for elasticity and maintains shape of certain structures. Fibro is strong and rigid (strongest of 3) Hyaline

    asked by Lena on September 26, 2010
  11. Physics

    Blocks of mass 4, 8, and 24 kg are lined up from left to right in that order on a frictionless surface so each block is touching the next one. A rightward-pointing force of magnitude 15 N is applied to the left-most block. Suppose now that the left-right

    asked by Raji on February 20, 2011
  12. Algebra

    The Reptile Farm has 400 square feet in which to house a collection of new lizards and frogs. A lizard requires 2 square feet of living space and costs $6 per month to feed. A frog also requires 2 square feet for living space but costs only $1 per month to

    asked by Anonymous on August 2, 2018
  13. calculus

    Boyle's law states that if the temperature of a gas remains constant, then PV = c. Where P is the pressure, V is the volume, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 13 in.^3/s, at what rate is P

    asked by Hussain on May 2, 2010
  14. Algebra

    Im having a hard time figuring out this problem: Use the function, y=-(x+1)^2 +2, to answer the following parts. Find the y-intercept y=-(0+1)^2 +2 y=-(1)^2 +2 y=-1+2 y=1 is my answer Find the x-intercept 0=-(x+1)^2 +2 0=-((x^2)+(1^2))+2 0=-x^2 - 1 + 2

    asked by Mike on May 4, 2011
  15. math

    Let f(x) be a polynomial of degree 3 which has a critical point at(-1,8/3) and an inflexion point at(2,-46/3) (a)Determine f(x) . (b) Find another critical point of f(x) (if any). (c) Determine the intervals where f(x) is increasing and where it is

    asked by weloo_volley on April 21, 2012
  16. math

    the lengths of two legs of a right triangle depend on time. One, whose length is x increase at the rate of 5 feet per second, while the other, of length y, decreases at the rate of 6 feet per second. At what rate is the hypotenuse changing when x=3 and

    asked by Aaron on November 26, 2012
  17. Calculus

    A spotlight on the ground is shining on a wall 24\text{m} away. If a woman 2\text{m} tall walks from the spotlight toward the building at a speed of 0.6\text{m/s}, how fast is the length of her shadow on the building decreasing when she is 2\text{m} from

    asked by Spencer on December 8, 2015
  18. physical science

    A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine? A. 92 percent B. 94 percent C. 97 percent D. 96 percent

    asked by Unmei on May 27, 2014
  19. Philosophy

    Leibniz presents monads as simple substances. Monads are infinite in number, unextended, and windowless, and each mirrors the universe. As a consequence, Leibniz contends that the universe manifests both order and perfection. Why does Leibniz give monads

    asked by Joe on February 4, 2008
  20. Literature/Social Studies (Ms. Sue!)

    The New Frontier" by John F. Kennedy. 1. What ideas does Kennedy express by quoting William Brandford? A: By quoting William Bradford, Kennedy expresses the idea that, despite great difficulties, man can overcome anything through their will and

    asked by Anonymous on March 25, 2014
  21. business information system

    ROI & NPV: wireless order-tracking system I need to identify the ROI and NPV of the wireless order-tracking system. Here is the information I have been given: - The acquisition cost is $35,000 paid at the time of installation. - It reduces the wait staff

    asked by Beatrice on September 2, 2010
  22. Finance

    ROI & NPV: wireless order-tracking system I need to identify the ROI and NPV of the wireless order-tracking system. Here is the information I have been given: - The acquisition cost is $35,000 paid at the time of installation. - It reduces the wait staff

    asked by jackie on April 11, 2010
  23. astronomy

    The luminosity of the Sun is 4*10^33 erg/s, and its radius is 7*10^10 cm. You are tasked with building a solar power plant in the Arizona desert, using solar panels with 10% efficiency. How large an area (km^2) must your solar panels cover to match the

    asked by Tsambikos on October 1, 2015
  24. Statistics

    Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of 32 months before certain electronic components deteriorate, causing the watch to become unreliable. The standard deviation of

    asked by Amy on November 16, 2016
  25. Math

    An ice cream store sells 30 different flavours of ice cream and it offers a choice of 3 different kinds of cones. In how many ways can we order a dozen two-scoop ice cream cones if any two of them in one order must differ at least by a flavor or by the

    asked by Excel on April 11, 2015
  26. Math

    An ice cream store sells 30 different flavours of ice cream and it offers a choice of 3 different kinds of cones. In how many ways can we order a dozen two-scoop ice cream cones if any two of them in one order must differ at least by a flavor or by the

    asked by Excel on April 9, 2015
  27. Math

    An ice cream store sells 30 different flavours of ice cream and it offers a choice of 3 different kinds of cones. In how many ways can we order a dozen two-scoop ice cream cones if any two of them in one order must differ at least by a flavor or by the

    asked by Excel on April 19, 2015
  28. math

    An ice cream store sells 30 different flavours of ice cream and it offers a choice of 3 different kinds of cones. In how many ways can we order a dozen two-scoop ice cream cones if any two of them in one order must differ at least by a flavor or by the

    asked by Excel on April 9, 2015
  29. Math

    An ice cream store sells 30 different flavours of ice cream and it offers a choice of 3 different kinds of cones. In how many ways can we order a dozen two-scoop ice cream cones if any two of them in one order must differ at least by a flavor or by the

    asked by Excel on April 9, 2015
  30. Solar Energy Please Help

    a) Family Smith has already installed PV in their house. Now, they also want to cover their needs for warm water with solar energy. For this, they consider having a solar thermal water heating system. Considering that the need for warm water is 100L/day,

    asked by Anonymous on October 26, 2013
  31. social studies

    In what aspects of Japanese culture would you find influence of Chinese culture? Select all that apply. A. gardening B. currency C. scroll painting D. social structure E. government i think c, d, and e

    asked by spearitt on November 19, 2018
  32. AP CHEM

    A secondary alcohol results from the attachment of a hydroxy group to which carbon atom? C |

    asked by Anonymous on April 5, 2013
  33. Math

    Using the term structure in Problem 29 what is the present value of an investment that pays $100 at the end of each of years 1., 2. and 3? If you wanted to value this investment correctly using the annuity formula which discount rate should you use?

    asked by J on June 7, 2014
  34. science

    The following statement is a vaild scientific theory. If Watson and Crick had not discovered the structure of DNA, bio - technology would be 20 years behind where it is today. TRUE FALSE true

    asked by pam on September 6, 2010
  35. science

    The following statement is a vaild scientific theory. If Watson and Crick had not discovered the structure of DNA, bio - technology would be 20 years behind where it is today. TRUE FALSE true

    asked by pam on September 6, 2010
  36. english

    By adding sentence variety in writing you can give it life and rhythm. Your readers can be bored by reading too many sentences with the same structure and length. It can grow to be monotonous for readers.

    asked by jessica on October 18, 2010
  37. geometry

    sodium has a body-centered cubic structure with a unit cell that is 430 picometers wide. estimate the radius of a sodium atom. please help me, I don't know how to get the solution. THank you

    asked by lin on January 28, 2013
  38. Chemistry

    For acids of the same general structure but differing electronegativities of the central atoms, acid strength decreases with increasing electronegativity of the central atom. True or false

    asked by Josh G. on November 15, 2012
  39. Organic cChemistry

    For each pair of molecules or ions, select the stronger base and write its lewis structure a) CH3S- or CH3O- b) CH3NH- or CH3O- c) CH3COO- or OH- d) CH3CH2O- or H- e) NH3 or OH- I would really appreciate the help!

    asked by Kourtnei on October 10, 2013
  40. History

    Is anyone available to help me? I need to create a metaphor to describe the structure of our federal government The example they provided is "The American Government is a tripod; without each post, it would collapse." I can't find anything that fits very

    asked by Abby on October 1, 2015
  41. Chemistry

    Iron crystallizes in a body–centered cubic structure. The volume of one Fe atom is 9.38 x 10–24 cm3, and the density of Fe is 7.874 g/cm3. Find an approximate value for Avogadro’s number.

    asked by Ian Palen on December 8, 2012
  42. science - atoms and bonds

    #1) Draw the following ions using a Bohr diagram: b)oxygen: i got [oxygen:2)8)]-2 (the -2 is an exponent) but the answer said [oxygen: 2)8)8)]-2...is this right? d)fluorine: i got [fluorine:2)8)]-1 and the book says [fluorine: 2)8)8)]-1..again, is the book

    asked by Sarah on May 10, 2008
  43. science

    What is the meaning of cell structure because i can't find the meaning anywhere.

    asked by saiyda on January 27, 2010
  44. mgt/230

    what is the relationship between organizational structure and organizational function? help please?

    asked by ann on October 23, 2011
  45. biology

    Allegra is a blockbuster allergy medication that generated over $1.8 billion in global sales in 2004. Allegra, or Fexofenadine, decreases allergy symptoms by inhibiting the action of histamines. Histamines are naturally occurring molecules that are

    asked by selly on March 12, 2013
  46. Business Communication

    Will someone look over my answers and think this is okay? The assignment is and I'm suppose to find the strengths and weaknesses. I am a new publisher with some really great books to sell. I saw your announcement in Publishers Weekly about the bookseller's

    asked by Cupcake on November 22, 2007
  47. PHYSICS!!

    (a) Suppose 10 astronauts are sent to Mars and then back to Earth. The average power usage of each astronaut is 10,000,000 joules per day. What is the average power usage of each astronaut in watts and horsepower? (b) It will take approximately 2 years for

    asked by tom on April 11, 2016
  48. PHYSICS HELP!!

    (a) Suppose 10 astronauts are sent to Mars and then back to Earth. The average power usage of each astronaut is 10,000,000 joules per day. What is the average power usage of each astronaut in watts and horsepower? (b) It will take approximately 2 years for

    asked by Ben on April 11, 2016
  49. ECONOMICS

    The following table illustrates the points a student can earn on examinations in economics and biology if the student uses all available hours for study. Economics Biology 100 40 90 50 80 60 70 70 60 80 50 90 40 100 Plot this student’s production

    asked by RAYNE on September 14, 2011
  50. Chemistry Please Help!!!

    Airbags contain a mixture of sodium azide, potassium nitrate, and silicon dioxide. A sensor detects a head on collision that cause the sodium azide to be ignited and to decompose forming sodium and nitrogen gas. This gas fills a nylon or polyamide bag such

    asked by Annie on July 25, 2014
  51. English

    Feminists argue that since the past millennium in the West have been dominated by men-whether they be politicians in power or the historians recording it all - Western literature reflects a masculine bias.and consequently, represents and inaccurate and

    asked by Jessica on January 10, 2015
  52. Physics

    If the distance between two slits is .05mm and the distance to the screen is 2.5m find the spacing between the first and second order bright fringees for yellow light of wavelenght 600nm. d=5x10^-5m L=2.5m wavelength= 6x10^-7m x=? x=wavelength*L/d

    asked by Jason on April 23, 2008
  53. Algebra

    Consider the equation 5x + 2y = 30. Part 1: On your own paper, graph this equation using the slope-intercept method. In the space provided, explain, in words, each step of the procedure you used. Make sure to use complete sentences and correct grammar. (3

    asked by Heather on November 15, 2010
  54. algebra

    Consider the equation 7x + 3y = 42. Part 1: On your own paper, graph this equation using the slope-intercept method. In the space provided, explain, in words, each step of the procedure you used. Make sure to use complete sentences and correct grammar. (3

    asked by Ka'Sandra on August 11, 2010
  55. Integrated Physics and Science

    A crowbar is used as a lever. The effort force of 40 newtons moves 3 meters. The resistance force of 54 newtons moves 2 meters. What is the efficiency of the lever? A) 100% because energy must be conserved B) 90% C) 25% D) 18% i need help. i don't know how

    asked by Nella on January 10, 2011
  56. Operations management

    Tax Preparers Inc. works 250 days per year. The company uses adding machine tape at a rate of eight rolls per day. Usage is believed to be normally distributed with a standard deviation of three rolls during lead time. The cost of ordering the tape is $10

    asked by Patrice on March 1, 2012
  57. chemistry

    a. Listening to the weather report, you hear that the barometer is falling. What part of the barometer is falling? The level of mercury is falling. b. What is happening to the air pressure? The air pressure is decreasing.

    asked by krystal on February 21, 2012
  58. Kinesology

    A person performs a work task at a mechanical efficiency of 20 percent and at total energy output of 15kcal/min. How much energy(kcal/min) is lost as heat? and how much energy(kcal/min) is used to actually perform the work?

    asked by Sam on February 29, 2012
  59. Science

    A person performs a work task at a mechanical efficiency of 20 percent and at total energy output of 15kcal/min. How much energy(kcal/min) is lost as heat? and how much energy(kcal/min) is used to actually perform the work?

    asked by Sam on February 29, 2012
  60. Stats

    Suppose a Normal model describes the fuel efficiency of cars currently registered in your state. The mean is 27 mpg, with a standard deviation of 4 mpg. Describe the mileage of the most efficient 3% of all cars. a. greater than 24.9 mpg b. greater than

    asked by Ali on July 29, 2016
  61. math

    the roller coaster has two seats in each of 12 rows. Riders are assigned to seats in the order they arrive. if you ride this roller coaster once, what is the probablilty of getting coveted first row? How many times must you ride in order to have atleast a

    asked by jasmine on September 28, 2007
  62. Physics

    Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the

    asked by Catherine on May 8, 2011
  63. Physics

    You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a

    asked by Catherine on May 8, 2011
  64. physics

    A man wished to travel due north in order to cross river 5kilometer wide flowing due east at 2kilometer per hour. If he can roll at 9kilometer per hour in still water, find 1. The direction in which he must head his boat in order to get to his destination

    asked by ayomide on June 8, 2015
  65. organic chemistry

    I really need help with this question. It is located at the link below. Question #2. I understand the general reaction but I need help with the actual mechanism. Olopatadine is a drug used topically to treat the itching associated with conjuctivitis It is

    asked by ha on January 21, 2013
  66. Biology

    Can someone please check if my answers are correct? 21. The difference between autotroph and heterotroph is that a. heterotrophs must get energy from sources other than the sun b. heterotrophs can use chemical or light energy sources c. heterotrophs do not

    asked by mysterychicken on January 22, 2010
  67. physics- please check

    a. Two sticks are rubbed together to start a fire. b. A firecracker explodes. c. A red-hot iron bar is set aside to cool. In which of the situations listed above is energy being transferred as heat to the system in order for the system to do work? I would

    asked by Anonymous on February 4, 2007
  68. Chemistry

    1. Chemistry is the study of the composition, structure and properties of substances.- F? 21. Which is found in the nucleus-- Protons or neutrons? 27. Copper metal is: a. poor conductors b. brittle c. malleable C? 44. What is the charge on most polyatomic

    asked by mysterychicken on October 25, 2010
  69. structural design

    ASHI standards require a home inspector to identify and describe the type of structure and materials of construction before A. testing systems scientifically. B. evaluating each system. C. establishing value. D. reporting remaining usefulness.

    asked by darian on March 1, 2014
  70. Business 318

    8. An open systems perspective places great significance on understanding the relationship between an organization and its __________. (Points : 1) personnel practices. internal resources. chain of command. capital structure. environment.

    asked by Joan on May 11, 2015
  71. English

    I need help putting my thesis into "parallel grammatical structure". Children should be limited on the amount of television they watch because not only is it filled with bad influences but it causes them behavior problems, and ultimately puts their health

    asked by Kayla on November 28, 2010
  72. mgt

    help explain how organizational design like geographical, functional, customer-based, product, service, hybird, matrix, marketing channel helps determine which structure best suits target stores organizations needs.

    asked by at on October 24, 2011
  73. English 4

    Parallel structure is the A. use of lines that are all more or less the same length. B. dispersal of thematic elements evenly throughout a work. C. balanced arrangement of stanzas in the sections of a narrative poem. D. use of repeated words, phrases, or

    asked by Ciara on April 23, 2015
  74. Sociology

    the variable that sociologists exphasize the most as being the determining motivation for our thinking and behavior? A. Random chance events B. Natural born in instincts C. Inherited genetic structure D. ones society and social location My answer is D is

    asked by tricica on September 28, 2010
  75. english

    Winds stampeding the feilds under the window . Floundering back astride and blinding wet. Till day rose; then under an orange sky. ~ comment on the poets use of sentance structure i have no idea how to answer this could you please help me ?

    asked by Kerryann on February 24, 2010
  76. Science (Human Anatomy)

    THIS QUESTION IS WORTH 50 MARKS I NEED SOURCES AS WELL Relate their structure of a neuron to the anatomy of the cerebral cortex and spinal cord Be sure to discuss the locations of soma, axons, dendrites, and supportive cells in each area.

    asked by jawed hakimi on October 20, 2012
  77. Algebra

    1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within

    asked by A.W. on February 1, 2009
  78. Physics

    An experimental model rocket has a mass of 0.054kg. The fuel that was used in one test had 215J of chemical potential energy. When the rocket reached an altitude of 119m, it was travelling at 48m/s and still rising. With what efficiency did the rocket

    asked by Annie on November 9, 2015
  79. Science

    An experimental model rocket has a mass of 0.054kg. The fuel that was used in one test had 215J of chemical potential energy. When the rocket reached an altitude of 119m, it was travelling at 48m/s and still rising. With what efficiency did the rocket

    asked by Annie helpppp on November 9, 2015
  80. science

    The Australian grass tree, from the genus Xanthorrhoea in the lily family, grows to a height of about 4.5 m, bears long narrow leaves in a tuft at the top of the trunk, and produces yellow or white flowers in a spike above the leaves. A yellow-flowered

    asked by jiskhaweekend on January 18, 2014
  81. English

    Hello. Please help me with the following structures: 1)is it possible to use "going to" after "expect" or only "will", for example "it's expected that they are going to discuss" or only "it's expected that they will discuss / will be discussing"? 2)are the

    asked by Ilma on May 13, 2011
  82. finance (operational efficiency)

    The best indication of the operational effiency of management is? A. net income B. earnings per share C. EBIT D. gross profit I like net income as a metric for measuring operational efficiency of management. The amout of money a corporation has after all

    asked by Jason on July 26, 2008
  83. Math

    In order to get to school carly must first take take a bus 12 miles due east. she then gets off that bus and take another bus 9 miles due north in order to reach the school building. if there were a single bus traveling northeast that could take directly

    asked by Mcgraw on August 21, 2012
  84. Chemistry

    Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III) oxide (Fe2O3) is: 4Fe(s)+3O2(g)

    asked by Kaylene on February 21, 2010
  85. English

    Can you please check the following sentences, please. It's really urgent. 1) Following what Joyce had already done in England and Proust in France, and what, in some way, Sterne had attempted as early as two centuries before, Virginia Woolf therefore

    asked by Mike on April 6, 2011
  86. Maths

    Let f(x)= x^5-5x+3 1-Find f'(x) and f"(x). 2-Find the intervals on which f(x) is increasing or decreasing. 3-Find the local maximum and minimum of f(x), if any. 4-Find the intervals on which the graph of f(x) is concave up or concave down. 5-Find the

    asked by Haneen on December 1, 2014
  87. Computers

    Help guys..here is what I need.. and unfortunately I need this in like 2 hours...my computer crashed with all my work so please anyone help... Write a console application that has a furniture and appliance dealership needs you to create a sales screen to

    asked by Kevin on May 6, 2013
  88. chemistry please help

    Calculate the lattice energy of potassium oxide from the following data: Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond energy of oxygen: +498 kJ/mol First ionization energy of potassium: +419 kJ/mol 1st electron affinity of oxygen: -141 kJ/mol

    asked by Joanie on April 17, 2011
  89. CHEM please!!! help

    Calculate the lattice energy of potassium oxide from the following data: Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond energy of oxygen: +498 kJ/mol First ionization energy of potassium: +419 kJ/mol 1st electron affinity of oxygen: -141 kJ/mol

    asked by Joanie on April 19, 2011
  90. Science

    1.If the current (in amps) remains the same, but the voltage increases, what effect does this have on the power (in watts) consumed by some device? 2.How is the dimension of time different from the dimensions defining space?

    asked by Leo on May 11, 2015
  91. Algebra

    We are learning using the log button in algebra. I have a TI-83 calculator. My book says that log10 85 (there is no space between thet 10 and the 85, that's just to show the different numbers) is equal to 1.93 approximately. But I got 85. How do you

    asked by Tatiana on January 17, 2009
  92. Physics

    An astronaut takes a space trip to newly discovered palnet X. measurements from earth indicate that: Mx=3Me and Rx=2Re. What is the acceleration of gracity gx on this planet as a multiple of ge?

    asked by anne on May 18, 2011
  93. Art

    Which element in the image The Annunciation by Jan van Eyck, creates an emphasis on the female figure? A. Form B. Texture C. Space D. Color Is the answer D?

    asked by Gwen on September 15, 2014
  94. concept development

    Free play, eating a snack, painting, hearing a story, and so forth are related to which of the following learning concepts? A. Space B. Classification C. Size D. Time my answer is d.

    asked by Daniella on January 24, 2015
  95. PHYSICS

    A plane electromagnetic wave moving through free space has an E- field given by E_x=0; E_y=0; E_z=100 sin[8π×〖10〗^14 (t- x/(3×〖10〗^8 ))]. Calculate the corresponding flux density.

    asked by NOONY on November 22, 2015
  96. Physics

    Which of the following is an example of projectile motion? a jet lifting off a runway a thrown baseball an aluminum can dropped straight down into the recycling bin a space shuttle being launched I think it's b, but I'm not sure.

    asked by Anonymous on September 13, 2011
  97. Physics

    A small charge that has lost 5.0 X 10^3 electrons and has a mass of 2.0 x 10^-6 kg experiences an acceleration of 15ms^2 when placed at a point P in space. Determine the magnitude and direction of the electric field at P

    asked by James on June 4, 2014
  98. Physics

    Steel railroad tracks of length L = 18.30 m are laid at 10.0° C. How much space should be left between the track sections if they are to just touch when the temperature is T = 49.0° C? mm Please help. I have tried this L° α Δt = 18.3 * 13 10^-6 * (49

    asked by Amy on April 20, 2012
  99. Physics-10

    A vehicle that weighs 400N on the surface of the earth is traveling in outer space at a speed of 400m/s. it can be stopped by applying a constant force of 20N for?

    asked by Stanley on March 4, 2011
  100. Child Care Managment

    which of the following is is best suited to a formative assessment of progress? A, muscular strngth and endurance B body fat analysis C. Flexibility D awareness of selfand space. I think is A. But if Im wrong can somebody help me. thanks.

    asked by Alex on August 19, 2011