1. physics

    Can someone check these? 1. What device, developed in 1970, is able to make images of individual atoms? 1. The X-ray crystallographer 2. The laser 3. The Brownian motion detector 4. The scanning electron microscope My answer: 4 2. Which of the following is smallest? 1. Proton ...
  2. Preschool/Storytelling

    Would you please look over my answers to these questions and see if you agree that I have chosen the best answer. If my answers are wrong-please let me know. 1. When storytelling,memorization is: A. a good idea for phrases or sections that are repeated in the story. B. ...
  3. Clinical Chemistry

    I have 2 questions relating to clinical chemistry... 1st: I have no idea where to even start with this. It seems like it should be simple, but I have no clue. The question is... "In serum, about 55% of total serum calcium is bound. The measurement of ionized (free) calcium ...
  4. physics

    Hi! could anyone help me please, I have no idea how to this at all. I try to it but, the did not get the right answer. Thank for your help Oppositely charged parallel plates are separated by 5.34 mm. A potential difference of 600 V exists between the plates. (a) What is the ...
  5. math

    write an equvilant expression of k+sr is i have no idea
  6. Math

    How do i graph the function y^2=x*(x-4)^2. I have no idea where to begin.
  7. life orientation

    What is viable business idea what does it mean?
  8. science

    what are the vegetable parts of a plant? i have no idea
  9. science

    what is the big idea of energy transfer
  10. Calculus

    What is the derivative of 3sin(4x)? I have no idea where to begin!!!
  11. CACULUS

    If the function f(x) is differentiable and f(x)= {ax^3 + 6x, if x≤1 {bx^2 + 4, if x>1 then a = What do I do?? No idea what's going on..
  12. mathematics

    To what value does the sum 20+12+36/5 tend as n.I really don't have any idea.
  13. help i have no idea!!!!!!

    the challenges Earhart faced throughout her life.
  14. Algebra

    I am really confused and I think I have the wrong idea. Can you please take a look? 8[-52-(65-61)] 65 - 61 = 4 + 52= 56 -8 * 56 -448
  15. Math

    Why is estimating before you subtract a good idea?
  16. Math

    how do you add the following fractions. (X^2-6x)/(x^2+7x)+(x^2+5x)/(x^2+7x)? what do you get when you simiplify it because i have no idea how to :(
  17. math

    Find the difference by using the idea that a - b = a + (b): a. -12 - (-6) b. - 7 - 4 c. 11 - (-8) Thank you, I do not understand.
  18. Art

    When an idea is presented in a way that is original, it is considered to be
  19. Pre-Cal

    What is the domain of f/g? f(x)= x over x+1, g(x)=x^3 I have no idea how to figure this out!
  20. Math

    solve for the indicated letter. z=11-y, for y the solution is y= No idea
  21. Math (repost)

    Given f(x) and g(x)=f^-1(x). If f(1)=4 and f'(1)=-3, then find g'(4). ...No idea where to start with this. Please help? Thanks much!
  22. Calulus

    [(5.2)^x (5.2)^-7]/(5.2)^-5 That whole thing is (5.2)^9 But I have no idea how to find the exponent x?
  23. Geography

    Who is assosciated with the idea of the cultural landscape
  24. Psychology help

    What's a good theme that goes with the idea of encouragement?
  25. Science

    I need an idea for something cool to do with a polymer pellet?
  26. Alg2

    Rationalize the demoninator of each expression. (9y/x)^4 i have no idea how to do that
  27. English

    How do you know what the topic and main idea of a paragraph is?
  28. another law question

    where did the idea of 'circle sentencing' come from?
  29. Math

    Find the y- and x-intercepts for the equation. I have an idea what it might be, but want to be sure. I would appreciate the help! Thanks! f(x) = - 3 - 7x
  30. ELA

    What is the implied main idea of the passage>
  31. Calculus First Derivatives

    If f(2) = 2.5 and f'(2) = -2.5, then f(2.5) is approximately... I have no idea how to do this without an equation.
  32. Please help me here!!! Maths

    Isolve for x: ln(x^2-6x-16)= 0 . help me beacuse I do not have the idea to work it out.
  33. eng 10 h

    How would you define Emerson's idea of "mean egotism"?
  34. english

    What is the main idea of the shepards daughter
  35. math

    How do i factor? a)5a^2b+ab^2 b)9k^2-1 c)2y^2-5y+2 If i can get an idea how to do these and i work the rest i have to do myself, thanks
  36. Math

    I have no idea how to start. I cannot remember how to solve this for anything. 3x/4+6=-12
  37. English

    What could the main idea of Through The Tunnel be, in a sentence?
  38. science

    i have no idea what to do for my manatee onclusion. Any ideas for what to say?
  39. Please Help work it out! LOGARITHM

    log4(3x-7)^2=10. I have no idea in working it out.
  40. Critical Thinking

    What is the value of looking at an idea as a four categorical proposition.
  41. science

    whats the big idea of partcles?
  42. MATH HELP

    I have no freaking Idea on how to do this 4) R {1,2,3,4,7} T{3,5,6,7} What is the intersection of R & T? 5) What are the subsets of {-2,-1}?
  43. Math help please

    1. 2(3x + 5) = 46 4 5 6 7 2. 1/2x + 1/4x = 16 16 21.3 32 64 3. 6 - x - x = 18 -6 6 9 -9 4. 4x - 3/5 = 2/5 1/5 5/5 1/2 1/4 My answers: 1. 6 2. 21.3 3. ???? 4. 1/4 I have no idea how to solve 3! Can you please explain? Thank you
  44. Literature

    How would you define Emerson's idea of "mean egotism"?
  45. help i have no idea!!!!!!

    No one is useless in this world ... who lightens the burden of it for any one else
  46. Algebra

    If (x+2)² = 25 and x > 0, what is the value of x? I have no idea what to put for x, if someone could please show me the steps ?
  47. algebra, help please?

    So the problem is y-2=y+2 Would I subtract 2, or add the two? because i know you have to do something with the two, but I have no idea what.. Thank you!
  48. Math

    Which ordered pair is not a solution of y= -4x -9 A(-9,27) B(3,-21) C(-6,15) D(5,-28) I have no idea how to do this help please
  49. biology

    CUM ON PLEASE SOME 1 TELL ME DA BIG IDEA OF ENERGY
  50. Pre Calculus

    e^-x sqrt(3e^2x -5/4) = e^x No idea how to approach this.
  51. English

    What does it mean by "What is the supporting idea in this part of the speech?"
  52. English

    Does anyone hae an idea of where I could look for the moral of this fable
  53. Language arts

    What is the central idea of the selection
  54. College Physics w/Calculus

    (a) What is the escape speed on a spherical asteroid whose radius is 570 km and whose gravitational acceleration at the surface is 3.1 m/s2? (b) How far from the surface will a particle go if it leaves the asteroid's surface with a radial speed of 1000 m/s? (c) With what speed...
  55. Physics 12

    "A pendulum consisting of an object of mass 1.3kg suspended from a string of length 1.9m is pulled aside so that the string makes an angle of 28 degrees with the vertical. At the instant the pendulum is released, what is the magnitude of the unbalanced force on the object?" I ...
  56. science ( physics)

    hello, i am having trouble with this problem. Calculate the average force of friction acting on a wood block as it is propelled along the floor by an elastic band ? my solution and my ideas: What does it mean by average froce of friction? I first weighed the peice of wood to ...
  57. physics - another question

    Sam is sitting in her fishing boat watching a trout swim below the surface. She guesses the apparent depth of the trout at 2.0m. She estimates that her eyes are about 1.0 m above the water's surface, and that the angle at which she's observing the trout is 45 degrees. b) ...
  58. Chemistry

    so i got a test and like usual my teacher didn't teach me half of the stuff that's going to be on it so he gave us a pretest of what is going to be on it and an answer key and i got several questions 13.) what is the pH of a formic acid if the concentration is .00055 M? ok so ...
  59. Physics

    One of the fastest recorded pitches in major-league baseball, thrown by Billy Wagner in 2003, was clocked at 101.0 mi/h . If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate, 60.5 ft away? I tried to ...
  60. Physics

    A cubical block of wood 0.100 m on a side and with a density 550 kg/m^3 of floats in a jar of water. Oil with a density of 750 kg/m^3 is poured on the water until the top of the oil layer is 0.035 m below the top of the block. 1. How deep is the oil layer? Please tell me the ...
  61. Physics

    I have no idea how to do this. Anyone help? A cyclist passes a race check point at +5.5m/s and then accelerates ata constant rate of +.55 m/s^2. The cyclist forgot to check in at the check point, and after 20s turns back around to head back. How far did the cylist move from ...
  62. Physics AP C

    Two trains, each having a speed of 22 km/h, are headed at each other on the same straight track. A bird that can fly 60 km/h flies off the front of one train when they are 70 km apart and heads directly for the other train. On reaching the other train it flies directly back to...
  63. physics

    I have no idea how to start this problem. I don't want the answer just how to start.A supertanker (mass = 1.70x10^8kg) is moving with a constant velocity. Its engines genterate a forward thrust of 7.40x10^5N. Determine (a) magnitude of the resistive force exerted on the tanker...
  64. Physics HELP PLEASE

    two spherical objects are separated by a distance of 9x10^-3 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each object ...
  65. Physics

    Two trains, each having a speed of s, are headed at each other on the same straight track. A bird that can fly at speed 2s flies off the front of one train when they are d apart and heads directly for the other train. On reaching the other train it flies directly back to the ...
  66. Physics

    Two stones are thrown simultaneously, one straight upward from the base of a cliff and the other straight downward from the top of the cliff. The height of the cliff is 5.53 m. The stones are thrown with the same speed of 8.62 m/s. Find the location (above the base of the ...
  67. Physics

    An organ pipe open at both ends has a harmonic with a frequency of 480 Hz. The next higher harmonic in the pipe has a frequency of 540 Hz. Calculate the frequency of the fundamental and the length of the pipe. I know 540/480 is 9/8. I have no idea where to go from here.
  68. physics

    I'm supposed to design a device that will protect a raw egg, GRADE A, (not that its really important to know what kind of egg it is... LOL) But, it will drop from a 12 FOOT height to a concrete floor. The only materials that I'm allowed is about 9 sheets of "8.5 X 11" paper or...
  69. Physics(Please answer, thank you)

    How do you determine the ymax? I know you have to use Q which I have values that were given to me as well as vo values but I am not sure what to do with these values. Physics - drwls, Saturday, September 15, 2012 at 1:29am Define your terms. I have no idea what you are talking...
  70. physics

    A particle is released on the smooth inside wall of a cylindrical tank at A with a velocity v which makes an angle beta with the horizontal tangent. When the particle reaches a point B a distance h below A, determine the expression for the angle theta made by its velocity with...
  71. Physics HELP!

    I have NO idea how to do this! any help is great! A car of maass 1330kg is traveling at 28m/s. The driverapplies the brakes to bring the car to a rest over a distance of 79m. Calculate the retarding force acting on the car. From this i can see that it gives me the Mass:1330kg ...
  72. Community Service Idea

    my class ( of 13 students)have all created poems describing ourselves. we have decided to put it all together into a big community service project by making t-shirts and postcards related to our poems (most of the poems are about making good choices and are uplifting); and we ...
  73. 7th grade math Ms. Sue please help I have no idea!

    #10 On a blueprint, 1 inch = 13 feet. If the dimensions of the playroom on the blueprint are 0.35 inches x 1.25 inches, what are its actual measurements? * *Show all your work for full credit* #11 The coordinate of rectangle ABCD are given. Find the coordinates of its image ...
  74. Physics

    A 2.0 kg ball moving with a speed of 3.0 m/s hits, elastically, an identical stationary ball as shown. If the first ball moves away with angle 30° to the original path, determine a)the speed of the first ball after the collision. b)the speed and direction of the second ball ...
  75. reading/english

    When studying the world of living things, biologists and other scientists use the scientific process. Observtions along with precious data are used to formulate a hypothesis. New observations and or experiments are carried out in order to test the hypothesis. Scientists often ...
  76. URGENT MATH help

    (x^2y^6-3)^2 .....PLEASE HELP ME I HAVE NO IDEA HOW TO SOLVE THIS IVE BEEN DOING IT FOR HOURS
  77. science

    how do cells use food using big idea of energy
  78. Biology

    Why is it a good idea to dig compost into the soil.
  79. english

    How do I re word a sentence that is the main idea in a paragraph
  80. please help me please!!! Math

    Find a6 for an arithmetic sequence where a1=3x+1 and d=2x+6 . I can't even solve it because I do not have any idea.
  81. Mathematics

    I have no idea on this. I failed everyone of these on my last exam and assignment. Compute as indicated. 7 (-7) -7 (2-3)/ 2(-6+9)
  82. math

    f(x)= -9x-10 What is the slope and the y-intercept I have no idea how to do this. Please help 6x+7y=39 x=50-6y what is the solution of the system
  83. Math

    I have no idea how to do this problem: Select the expression below that is equal to 4(9-m). A. 4m-36 B. 13-m C. 36-m D. 36-4m
  84. Science

    On any given day, why does the photoperiod vary throughout the world? I have no idea about what they're asking? :S
  85. Accounting

    Does anyone have any idea what the Acronym ADE / CLR stands for? Thanks for your help.
  86. History

    what was the marching formation the romans used called and where did they get the idea?
  87. Math

    Evaluate the expression: 8^-4/3 Could someone please explain the process to me. I have no idea what I'm doing
  88. algebra

    1/x^2+5/x=4 Can someone please help me with this problem by showing the steps that I would have to do to get the answer? I have no idea how to do this. Please help somebody.
  89. Science

    I need an idea of a simple machine to build that is useful... I can't find any though.
  90. reading

    Why isnt an ant suture not a good idea?
  91. English

    Would it be a bad idea to start a concluding paragraph with hence?
  92. science

    how do cells use food using big idea of energy
  93. Chemistry

    Why is it not a good idea to use an antacid routinely? (two reasons)
  94. 2nd grade

    I have project to do I have to do some invention can any one give me idea what to do? thanks.
  95. US History

    I have googled and can't find what "Village in Between" means. Any idea where else I can look?
  96. Social Studies

    Which of the following was necessary to fulfill the idea of Manifest Destiny?
  97. Math

    Write 1/6 as a complex percent. The answer is 16 2/3%. I have NO idea what to do. Thank you
  98. Math-alg-calc

    x^(-1/7)=(1/2) Please help the example given was x^(-1/7)=(1/5) so that solved x=78,125. but i have no idea what to do thanks!
  99. math please help and hurry!!

    What is the rate of change for 2x^2 + 3 and 2^x + 3?? I have no idea please help meeeeeeeee
  100. calculus

    use the law of logarithms to expand and simplify. ln(e^x)/(1+e^x) Please help, i have no idea..
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