Posts by courtney

Total # Posts: 819

  1. Math

    Last week Jason practice playing his bassoon for 95 minutes. this week he practiced five more minutes than three times the number of minutes he practiced last week. how many minutes did Jason practice this week?
  2. SS helppp

    It does, thank you ANSWERS! 100%
  3. Science

    Explain how sexual reproduction increases genetic diversity in many species of plants and animals, make sure to include the importance and function of gametes. PLEASE HELP!!
  4. Physics

    Consider the figure above consisting of three particles of mass m attached to a massless rod.  Given an axis of rotation through point P, the rod rotates as shown in the figure.  If the rod is released from rest in the horizontal position at t = 0.  What is the ...
  5. Physics

    You grabbed a power drill that claims it can reach 2234 rpm in 0.8 s.  How many revolutions  does the drill make in 0.8 s?
  6. Physics

    You are tasked with designing a roller coaster ride with a radius of curvature of 6.0 m.  What minimum speed must the roller coaster have at the top of the circle so that the passengers experience a sense of "'free fall"?
  7. Physics

  8. Physics

    A 7150 kg truck traveling east at 5 m/s collides with a 1650 kg car traveling 30 degrees south of west at 20 m/s.   After the collision at what angle do the two vehicles move.   Express you answer in degrees from the positive x-axis.  Use a coordinate ...
  9. Physics

    Many thanks!
  10. Physics

    The scientific notations should say 2.34 x 10^-26; 9.11 x 10^-31; 4.0 x 10^7; 4.0 x 10^-24; sorry about that.
  11. Physics

    The carbon isotope 14C is used for carbon dating of objects.  A  14C nucleus can change into a different kind of element, a neighbor on the periodic table with lower mass, by emitting a beta particle – an electron or positron – plus a neutrino or an anti-...
  12. Physics

    A 3 kg block travels along a horizontal surface with a coefficient of kinetic friction of 0.26 at a speed of 7 m/s.  After sliding a distance of 1.0 m the block makes a smooth transition to a ramp with a coefficient of kinetic friction of 0.26.  How far up the ramp ...
  13. Physics

  14. Physics

    An 8 kg block is shot up an incline of 300with an initial speed of 2.8 m/s.  How far up the incline will the block travel if the coefficient of friction between it and the incline is 0.18? Hint:  Express the height above the ground that the block is above the incline...
  15. Physics

    A car going 15 m/s is brought to rest in a distance of 3 m as it strikes a pile of dirt.  How  large a force is exerted by the seatbelts on a 90 kg passenger as the car is stopped?
  16. Physics

    A 60 kg block slides along the top of a 100 kg block.  The lighter block has an acceleration of 3.7 m/s2 when a horizontal force F= 350 N is applied.  Assuming there is no friction between the bottom 100 kg block and the horizontal frictionless surface but there is ...
  17. Physics

    "Two blocks lie on a triangle as shown in the figure.  Block m has a mass of 8 kg and block P has a mass of 21 kg.  Assume the inclines and pulleys are frictionless find the tension in the string." The two blocks are on opposite side of an isosceles ...
  18. Physics

    Thank you
  19. Physics

    My apologies, the degrees copied as zeroes. It's 30 degrees, 45 degrees.
  20. Physics

    Let vector A = (6.0 m, 300 south of east), vector B = (13.9 m, north), vector C = (5.0 m, 450 south of west).  Find the magnitude of vector D = A+B+C?
  21. Physics

    A brown road runner is standing still pecking at soil looking for worms.  Suddenly, a black road runner travelling at a constant speed of 9.25 m/s, overtakes the brown roadrunner.   The brown road runner notices that the other one has a worm in its mouth and ...
  22. Forensic Science

    If there are 45 drops of alcohol/mL, and the density of alcohol is 0.789 g/mL, what is the blood alcohol concentration of your unknown sample?
  23. Math1

    There are 5 pencils in each box how many pencils are in 85 boxes
  24. geometry

    the measure of one interior angle of a parallelogram is 50 degrees more than 4 times the measure of another angle. find the measure of each angle.
  25. 100th day school

  26. Algebra

    For the school play, one adult ticket costs $10 and one student ticket cost $6. Twice as many student tickets as adult tickets were sold. The total receipts were $3 300. How many of each kind of ticket were sold?
  27. math

    the battery lifetime is normally distributed for large samples with a standard deviation of 70 days. if 16% of the batteries have a lifetime of 850 or higher, what is the average battery life?
  28. Reading

  29. Reading

    9. As you're revising an essay, you write down several sentences to describe your intended readers. Why should you do this? To make sure you're writing what you know, not what you believe B. To ensure that you're instructing your audience adequately C. To ensure ...
  30. Grade 8 Lang Arts

    He says it
  31. social studies

    the u.s superme court ruled against the tariff
  32. Physics

    An astronaut throws a ball with mass m to the right with speed v. It strikes the wall of the space station and rebounds, moving left with a speed V/2. What was the magnitude of the impulse of the ball caused by the collision?
  33. Math

    A box contains some white balls and some blue balls. There are 5 more blue balls than white balls. One ball is removed at random and not replaced. A second ball is then removed at random. The probability that the balls are different colours is 52/105. Find the probability that...
  34. Math

    How is it 0.8? What is the working out?
  35. Math

    A box contains some red balls and some blue balls. There are four more blue balls than red balls. A ball is removed at random, replaced and a second ball randomly removed. The probability that the two balls are different colours is 21/50. How many balls of each colour are in ...
  36. Science

    A screwdriver with the one similar shaft in a 4 cm handle is used to tighten a screw the mechanical advantage is
  37. College algebra

  38. college algebra

    9.42 feet

    How did European affect Africa during the 18 hundreds how did Africa Africans respond in the 1900 Plzzzzzz help I swear I have read my text read a link about but I still don't understand plz help!!!!!#
  40. Language art

    Consider the main characters from " The Stolen Day and the night the bed fell in a paragraph discuss which character learns the most and which one learns the least. PLZ ANSWER ASAP and yes I have read both stories

    I understand that part but I don't understand what's written look plz can u just tell me I have been working really hard plz I'm not lie in just help me or can you help me on my language art question

    What? I didn't understand

    Idk I just read it and nothing Pl ms.sue help

    Oooooooh ok thank you ok ok last one how did the European affect Africa during the 1800s how did the Africans respond in the 1900s plz help I'm so sorry for the bother but plz help

    OK thank you so much can you also answer this one. what role do women play in the economy of West and central Africa. I swear I already read my text and I got nothing

    In what areas of North Africa do the majority of the people live and why? I know that they live by the Nile river but why is what don't know plz help I have been doing everything only come here if it's important plz help thank you
  47. Physical Science

    You drop a water balloon off of a tree branch, and you time the drop time at Δt = 0.8 sec, from the instant you drop it to the instant it impacts the sidewalk. What is the height of the tree branch?
  48. Chemistry

    If the density of carbon is 3.51 g/cm3, and you have a small diamond (pure carbon) that has a mass of 0.0270 grams, what is the volume?
  49. math

    you can write a ratio using : _ to or words
  50. Chemistry

    The answer to this question is C. N is reduced
  51. geometry

    SM=3x−4, and RN=9x−20. Find the value of x. A. 16 B. 4 C. 12 D. 8
  52. geometry

    Two sides of a triangle have lengths 4 and 7. Which of the following can NOT be the length of the third side? A. 4 B. 7 C. 11 D. 5
  53. geometry

    The lengths of two sides of an isosceles triangle are 8 and 10. The length of the third side could be? A. either 8 or 10 B. 6, only C. 8, only D. 10, only
  54. Economics

    Suppose you are a producer of friendship bracelets. How would the following events affect your/the market's willingness and ability supply friendships bracelets? Match the event on the left to the proper determinant on the right. 1. The price of friendship bracelets ...
  55. Algebra

  56. Math

    You have tow ropes one 14inches the other 23 inches if you if you need three feet of rope what do you do use RDW to solve
  57. English

    Sadly yes that's how cruel the world is
  58. Calculus

    Find the equation of the line tangent to the curve y=(x^2+3)^1/2 that is perpendicular to the line 2x-y+7=0
  59. Trig

    Use the Law of Cosines to determine the indicated angle θ. (Assume a = 17, b = 10, and c = 20. Round your answer to one decimal place.)
  60. English

    The MLA format for citing an entire website includes A. an article title. B. source from which you found the website. C. electronic publication information. D. author's apparent credibility.
  61. English

    Which type of Internet resource would be the most reliable in providing accurate information? A. A general reference site such as Encyclopedia B. An email you received from your instructor C. An email listserv D. An online newsgroup dedicated to your topic
  62. English

    It's necessary to use a/an _______ when a quotation is introduced by a verb. A. quotation mark B. comma C. ellipse D. colon
  63. geometry

    A 25 meter ladder is leaned against a tall building. If the ladder makes a 30 degree angle with the ground, how high up on the building (in meters) does the ladder fall?
  64. Physics

    Suppose at one point along the Nile River a ferryboat must travel straight across a 1.29-mile stretch from west to east. At this location, the river flows from south to north with a speed of 2.58 m/s. The ferryboat has a motor that can move the boat forward at a constant speed...
  65. READING ASAP ASAP PLEASE HELP ME!!!!!!!!!!!!!!!!!!

    Thanks guys!!
  66. READING ASAP ASAP PLEASE HELP ME!!!!!!!!!!!!!!!!!!

    what about 2?
  67. READING ASAP ASAP PLEASE HELP ME!!!!!!!!!!!!!!!!!!

    On #1 I meant to put A.
  68. READING ASAP ASAP PLEASE HELP ME!!!!!!!!!!!!!!!!!!

    CAN YOU CHECK IF I"M CORRECT? *=My answer. Which is the best example of the use of rhyme? A.the beat of the drum B.Fresh green grass C. A wild little girl* D.The kindness of strangers 2. What is the best example of a simile? A.Mary's shout rattled the window. B. Her ...
  69. geography

    thanks you!
  70. geography

    Who invented T.V's Phones, and computers?

    So is the answer D???

    which of the following features make earth and venus similar to each other ? A . their size and mass b. their rates of rotation c. their atmospheres d. their directions of rotation****
  73. Physical Education

    never mind I got it
  74. Physical Education

    Mandy wants to win the local youth tennis tournament next fall. Her coach has said that her serve is powerful enough, but she suggests Mandy train with a jump rope to improve her ability to cover more ground on the court when she’s playing. Why would her coach suggest ...

    Ok Ok... take it easy

    So I'm wrong

    so am i correct?

    I think B

    Henry's current age is 10 times Justin's current age. in 6 years,Henry's age will be 4 times Justin's age. Which system of equations can be used to calculate H Henry's current age J Justin's current age? A. J=10h j+6=4(H+6) B.J=H+6 J+4=H+10 C.H=10J H+6=...
  80. Math ASAP ASAP!!!!!

    yayaayay thanks Damon :)
  81. Math ASAP ASAP!!!!!

  82. Math ASAP ASAP!!!!!

    IS the answer 400?
  83. Math ASAP ASAP!!!!!

    Ok But what number do i have to add
  84. Math ASAP ASAP!!!!!

    Earl earns a weekly salary of $150 plus 20% of amount of his sales for the week. Last week he earned $230. The equation below can be used to find "s" the amount of his sales in dollars last week 230=150+0.2s What was the amount of Earl's sales last week? A.$180 B...
  85. Math/Physics

    Lil decides to estimate the height of the Empire State Building. She measures the angle θ of elevation of the spire atop the building as 19°. After walking x = 9.10 ✕ 102 ft closer to the building, she finds the angle to be 23.8°. Use Lil's data to ...
  86. Math

    Just got 100% answers are A. D. B. C.
  87. Chemistry

    Your question is very broad, because there are many types and techniques available. advantages: small sample size fast differentiates isotopes can be combined with GC and LC to run mixtures, or can be run in tandem for proteins etc. disadvantages: doesn't directly give ...
  88. Science

    aaaa OK SO Is it A?
  89. Science

    How can volcanic eruptions change the surface of the earth? by creating large deposits of coal by creating new islands and land by lowering land levels several feet by decreasing the level of the ocean I think its C
  90. Happy Christmas and Merry New Year!!

  91. math

    Ok So how do you solve 32b+55
  92. Reading

    Sorry about that lol merry Christmas Mr.Reed :D
  93. Reading

    ohhhhh gotcha ya thanks :)
  94. Reading

    Jonny Tremain by Ester Forbes
  95. Reading

    Describe Johnny’s relationships with Cilla, Lavinia Lyte, and Dove now that Johnny is living with Rab and his family. What do these relationships reveal about Johnny and his personal growth?
  96. math

    how do you solve 3x+11
  97. P.E

    Thanks guys :)
  98. P.E

    Which of the following does not describe why many people with eating disorders do not see help because they_____. A. are embarrassed b.deny there is a problem C. find comfort in food D are ashamed of their behaviors I don't now if its C or D but My personal think its D Ms....
  99. Physics

    A golf ball is dropped from rest from a height of 8.30 m. It hits the pavement, then bounces back up, rising just 5.00 m before falling back down again. A boy then catches the ball when it is 1.10 m above the pavement. Ignoring air resistance, calculate the total amount of ...
  100. Physics

    A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 6.04 m/s. The car is a distance d away. The bear is 28.8 m behind the tourist and running at 7.26 m/s. The tourist reaches the car safely. What is the maximum possible value for d?
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