1. pre algebra

    A 0.25 kg mass is horizontally attached to a spring with a stiffness 4 N/m. The damping constant b for the system is 1 N-sec/m. If the mass is displaced 0.5 m to the left and given an initial velocity of 1 m/sec to the left, find the equation of motion.
  2. biology help plz?????????????????

    Complete the following paragraph relating to the enzyme, β–galactosidase. This enzyme hydrolyses the disaccharide lactose to constituent monosaccharides, galactose and glucose. Drag and drop the appropriate words into the correct space. For white
  3. Science

    A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two
  4. science

    A scientist experiments on two different pairs of objects. During the experiment, the objects in one of the pairs are brought into contact with each other; the objects in the other pair are brought close together, but they do not touch. The scientist then
  5. chemistry

    1. Which example has particles that can be drawn closer to occupy smaller volume? a. fruit juice b. block of wood c. air inside the syringe d. ice cube 2. Which of the following phenomena does NOT involve the application of gas pressure? a. burning fuels
  6. english

    Please make a question 1. In 1982 it was a fishing village with two main roads, fields, and a population of 3 million. It is growing at an incredible speed (make a question with sentence "it is growing at an incredible speed ") 2. China is changing. It is
  7. Science - 6th grade

    A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two
  8. Math/Physics

    Problem Question: Rashad started The 780km drive from Sault st. Marie to Ottawa at 09:00. His average speed was 100km/h. Two hours later Tyson left Ottawa for Sault St. Marie. He drove at 80km/h on the same highway. How far from Ottawa, and what time of
  9. Economic

    The Admissions Director (AD) wants to determine the optimum number of students for each ECO561 class. You are provided with the following data: Tuition is $1250 per student. Instructor Pay $2500 Other incidental (variable) costs - $1000.00 Variable cost
  10. science

    A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two
  11. science

    A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two
  12. Science

    A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two
  13. science

    A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two
  14. math/algebra

    Can someone help me with this problem....5x/7-6x/5=3/35 find the common denominator for the left side You should get it to be 35 multiply both the numerator and the denominator by the number that makes each fraction have a denominaor of 35 After this
  15. MATHS

    Could you please check my answer? Daniel played a cards game in which each loss meant that he had to give the other player half the cards he had left. He lost four times, one after the other, and then had 3 cards left. How many cards did he have when he
  16. Math-oops forgot info

    If a dice has 3 on the top, right back 6, right front 2, bottom 4, left front 1, left back 5 and is rotated by +180 about the z axis and +90 about the x axis, how many dots does each face have after the rotation?
  17. 8th grade

    Ryan left musuem and drove south. Gab left 3 hrs later driving 42 km/h to catch up to him. After 2 hrs gab finally caught up. find Ryan's averae speed?
  18. Management /economics

    I really don't understand some of the questions but i tried my best so my answers are : 1. A 2. E 3. A 4. B 5. E please check and help :) 1. The chance that a society can actually achieve full employment is ________ percent. Select one: A. 1 B. 75 C. 10 D.
  19. Science Fossils

    When might preserved remains of an entire organism form? A. When sediment buries the hard part of an organism. (this one) B. When an event such as quick burial or freezing preserves an entire organism. C. When minerals replace parts of an organism. D. When
  20. math

    Kibet left school by bicycle at 8:00 a.m. and took 1 ½ hours to reach the market 20 km away. Akinyi left the school for the market by car at 8:30 a.m. The average speed of the car was 80 km /h. What was the difference between their arrival times?
  21. math

    Kibet left school by bicycle at 8:00 a.m. and took 1 ½ hours to reach the market 20 km away. Akinyi left the school for the market by car at 8:30 a.m. The average speed of the car was 80 km /h. What was the difference between their arrival times?
  22. physic

    The waves emitted from a source A is given by y1 = 6 sin π(20t – 0.5x) where y1, x and t are expressed in units of meter and seconds. (a) Determine the wavelength and the frequency of the radio waves. At the same time, source B generates waves y2
  23. science

    how does having a cold affect the sense of taste? Most of what we "taste" depends upon what we smell. A cold interferes with our sense of smell, so that our food doesn't taste very good then. Check this site for more details.
  24. Somerset Academy

    80% of an airline's flights depart on-time and 20% do not. Of those that depart on-time, 95% arrive on-time. OF those that depart late, 10% arrive on-time. What is the chance of someone taking a flight that will arrive on-time?
  25. Algebra 2

    The number of pages p a student can read varies directly with respect to time t in minutes spent reading. The student can read 90 pages in 60 minutes. Write an equation that relates pages read & time. Predict the number of pages in 90 minutes. Answer
  26. English

    Posted by rfvv on Monday, August 25, 2014 at 4:45am. 1. It's been a long time. 2. It's been a while. 3. I haven't seen you for a while. 4. Long time no see. --------------- Are they all the same in meaning? Does 'a while' mean ' a long time' or 'a short
  27. Chemistry

    A sample of a new plant food, "super gro", was analyzed. Determine the amount of grams of P and P2O5 as well as the percentage of P2O5 in a sample of "super gro". Mass of plant food sample: 12.50 grams Mass of MgNH4PO46H2O recovered: 8.93 grams
  28. science (check!)

    2.A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particulary hot, dry period that causes a snake population to decline what could the biologist hypothesize bout the roles of these two species?
  29. grammar

    Rewrite the following sentences, focusing on the grammar area specified in the left column. To enter your answer, click next to the number and begin typing. If the sentence is already correct, write No Change. Punctuation within Sentences—Colon The book
  30. lal check my work

    tell whether the capitalized word is a subject, direct obect, object of preposition , or predicate noun 1. pay close attention to WHAT I DO.(object of preposition) 2. this is HOW STUDENTS SELECT THEIR MAJOR.( predicate noun) 3. WHO SENT THE YELLOW ROSES is
  31. English

    1. WPM=130 means 130 words a minute. This is the similar reading speed of the listening test for first graders in middle school. 2. Write the second sentence in Number 2 in Italic script. 2-1. Write the second sentence in Number 2 in cursive type. 3.
  32. English

    i not get what this poem mean it be a ballad but i not get what theme be do the guy girl be in strong bond? True Thomas lay on Huntlie bank; A marvel he did see And there he saw a ladye bright Come riding down by the Eildon Tree. Her skirt was o' the
  33. math

    Renee must solve the equation 4x+12=6x. If she subtracts 4x from the left side of the equation, what should renee write on the right side of the equation?
  34. Earth Science

    Please help me with the following question: 8. Observations can lead to hypotheses. Hypotheses can lead to new experimentation. Which best describes an observation and hypothesis that might lead to new experimentation? A. Dr. Sattler discovers a new plant
  35. English

    Which of the following sentences contains a berb in the present tense? A. Jessica "enjoys" running. B. Grandma had "sent" us cookies. C. We "left" early. D. They are "walking" around the lake. Note" The verbs in the sentences are A. enjoys B. sent C. left
  36. Math

    I'm confused on how to answer a rotation question. If I have a picture and it rotates 270 degrees to where the top of the picture is now to the left of the page did the figure rotate 270 degrees to the right or left? Since it is clockwise I was thinkng to
  37. science

    What is the net force on a box that is being pushed to the left with a force of 50 N while it is also being pushed to the right with a force of 60 N
  38. Algebra..

    Find the slope of the straight line that passes through the given points or state that the slope is undefined. Then indicate if the line through the points rises (left to right), falls (left to right), is horizontal, or is vertical. 1. (7, 4) and (1, 1) 2.
  39. physics

    A bridge of lenght 79 m and mass 1.1 x10^5 kg is supported at each end. A truck fo mass 20900 kg is located 31 m from the left end. What is the force on the bridge at the left point of support?
  40. Math-geometry

    If a dice has 3 on the top, right back 6, right front 2, bottom 4, left front 1, left back 5 and is rotated by +180 about the z axis and +90 about the x axis, how many dots does each face have after the rotation?
  41. Algebra

    How do I identify an exponential growth/decay function on a graph? I'm assuming that if the curve moves from left to right, upwards, it is growth, and if it moves left to right, downwards, then it is decay. Please tell me whether this reasoning is right or
  42. Basic Caluculus

    f(x)=2x^3-x^2+1 [1,4]=interval Using the limit process, (once with right endpts, and the other with left entdpts.) find the area under the curve and above the x-axis on the given interval i got the area to be 107.5 for right endpts. (not sure if its right)
  43. Math-geometry

    If a dice has 3 on the top, right back 6, right front 2, bottom 4, left front 1, left back 5 and is rotated by +180 about the z axis and +90 about the x axis, how many dots does each face have after the rotation?
  44. Environmental Science

    Could you please explain the distinction between eutrophication and artifical eutrophication sense eutrophication is the natural process by which a body of water gains an abundance of nutrients? One is natural and occured long before man's time. The other
  45. AP

    . Plant -+ Deer --+ Tiger The first step in the energy chain that created the bonds of proteins in the tiger's muscle cells in the food chain shown above is the A. deer the tiger ate. B. plant the deer ate. C. photons the sun made. D. carbohydrates the
  46. curriculum

    Which of the following is an example of a project-approach activity for a preschool class? A. At 9:00 in the morning every day, half the children in the class do sorting and counting activities while the other half work on an art project. After 20 minutes,
  47. Science

    Carbon-14 has a half-life of about 5,600 years. Archaeologists analyze a piece of wood found at an ancient village site and determine that, of he initial 100 grams of Carbon-14 in the wood, onl 3.125 grams are left. How old is the wood?
  48. LA

    There's good news and bad news about grizzly bears in the American West. The good news? Their numbers have been increasing in recent years. In 1975, grizzlies made the threatened-species list under the federal Endangered Species Act. The bad news? Some
  49. Java

    Need help with this it my first time and not get it can someone please help here. Which class contains the function pow? Write the statement to use the method pow to compute and output 6.5 3.5 .
  50. English

    Hello Can you please come up with a few questions on the following topic: my free time I need to have a few questions which I would answer and in that way write my essay. But I am totally out of ideas :/
  51. Algebra 1

    write an equation of the line containing the given point and perpendicular to the given line (6,7);6x+=9 I am having a terrible time figuring out the last part. I would appreciate any help. Thank you.
  52. Readiny

    The first three sentences are (1) Everyhting I know about gardening i learned from my good friend Sandy (2) When I first moved from Iowa to Georgia last May, I tried planting a vegetable garden right away. (3) As i happily weeded the ground i thought to
  53. Biology. Any help is greatly appreciated :)

    Corn seeds are placed in two pots labeled A and B. Both pots receive 50g of the same soil, they receive the same amount of light and water each day. A chemical called colchicines is mixed with soil of plant B. Plants are allowed to germinate (grow). Slides
  54. Math Statistics

    2. A statistics professor has asked his students to flip coins over the years. He has kept track of how many flips land heads and how many land tails. Combining the results of his students over many years, he has formed a 95% confidence interval for the
  55. Education technology

    fair use laws were created to make exceptions to allow who to use material without permission? Students and teachers•• Business Restaurants Online stores Correct me
  56. College Stat

    A pair of fair dice is rolled. What is the probability of each of the following? (Round your answers to three decimal places.) (a) the sum of the numbers shown uppermost is less than 5 and (b)at least one 5 is cast
  57. Social studies

    The first amendment protects which rights? Select all that apply. The right to own a gun? The right to a fair trial?** The right to practice a religion(or not)? The right to criticize the government?** The right of owning property?
  58. math

    In rolling a pair of dice, suppose you win $5 if the sum is 10 but lose $2 if the roll is "doubles." If the price to play is $1, would it be a fair game? Justify your answer.
  59. chemistry

    A microwave oven heats by radiating food with microwave radiation which is absorbed by the food and converted to heat. Suppose an oven's radiation wavelength is 12.5 cm. A container with 0.250 liter of water was placed in the oven and the temperature of
  60. chemistry

    A microwave oven heats by radiating food with microwave radiation which is absorbed by the food and converted to heat. Suppose an oven's radiation wavelength is 12.5 cm. A container with 0.250 liter of water was placed in the oven and the temperature of
  61. math

    Romy invested $5,000 into an account that pays 5% compound semi-annually. He intended to keep the account untouched for five years. However, after three years he had to withdraw $3,000. Find the amount left in the account five years from the time he made
  62. Math

    Elizabeth wants to buy a new laptop computer, but she just started her baby sitting job and she hasn't earned any money yet. She figures once she starts earning income she save $90 a month in a saving account that earns three percent interest anually. She
  63. Economics(pls Help)

    Zoe Goggles is a deep sea underwater photographer. Her camera and lenses are valued at $4,000. There is a chance of 1/20 that she will lose her equipment on a dive over the course of the year. Her wealth, including the value of her equipment, is $30,000.
  64. Math-Pre Cal & Trig

    A pendulum swings uniformly back and forth, taking 2 seconds to move from the position directly above point A to the position directly above point B. . . . . _______________._______________ A . B . (SIMPLE DRAWING) The distance from A to B si 20
  65. Hypothesis test

    Please explain the solution to this problem. Individuals filing federal income tax returns prior to March 31 received an average refund of $1056. Consider the population of "last-minute" filers who mail their tax return during the last five days of the
  66. Comprehensive science ADV

    Overview: Enviromental problems, Endangered animals are becoming endangered one of the examples are the panamian godlen frog. And when i posted the first question it was the wrong one!! The real one is... Question: Describe What is being done to save
  67. english

    Add punctuation to the following excerpt. Writing under the name of Diedrich Knickerbocker Washington Irving aimed his potent satire at as diverse topics as political rivals such as Thomas Jefferson to the very ideal of looking back on the past
  68. Math

    Two cars leave town one going at 45 miles per hour and the other going at 55 miles per hour one left at 11 and one left at 1 how long till they are 375 miles apart?
  69. :(

    Please answer!!! Robert spent 3/5 of his money on stero equipment and 1/6 of the money he had left on lunch. He left the house with $24. How much money did Robert return with?
  70. History/Ms.Sue

    Thank you for that last thought. But is what I wrote pro-war. (and me against global peace) I just need to know if i did it right. What would I write for religion because my other ones I had first, pro-war diminishes population. Then for the other one I
  71. SCIENCE(chemistry)

    SIR BUT THIS IS ONLY PROVIDED IN THE QUESTION &I HAVE TO COMPLETE IT. (DRAW A TEMPERATURE TIME PLOT FOR ICE -STEAM TRANSFORMATION.)
  72. science

    Two particles are moving at a speed v such that they are always at a constant distance d apart and their velocities are always equal and opposite.at what time they return to their initial positions?
  73. Earth science

    Why didn't the early geologic time scale include the number of years ago that events happened?
  74. Science

    How can geologists identify different types of ammonites? A. by the times of fossilization B. by the size of their gills C. by what they ate at the time D. by differences in their shells
  75. science

    a car reduced it's velocity uniformly from 21m/s to14m/s in 10seconds (A) find the retardation (B) the distance cover in this time
  76. Earth Science

    I need help finding the geological time scale of stone mountain georgia, with a longitudinal, and latitude map of the area.
  77. Enviornmental Science

    I also need data on property damage costs over the same time period. Why is that the trend? What has happened since 1900 to influence these results?
  78. Earth Science

    why didn't the early geologic time scale include the number of years ago that events happened?
  79. Physical science

    State the mathematical relationship between the net force acting on an object and the time taken to change the objects momentum
  80. science

    Calculate the time in seconds an Olympic Skier would take to finish a 5,000 meter race at an average velocity of 25 m/s downhill.
  81. Physical science

    If a ball is thrown straight up at a speed of 24.7 m/s, for how long of a time will it continue to rise before it starts to fall back down?
  82. Statistics: Data Analysis

    Data Analysis A study examined how long aircraft air conditioning units operated after being repaired. Here are the operating times (in hours) for one unit: 32 51 58 63 65 69 90 97 98 100 103 106 117 118 118 120 124 128 129 132 150 152 185 196 225 231 289
  83. english

    i need help coming up with a question that could be the basis for a research essay. I don't know what topic you have in mind, but here are a few ideas to get you started. If there's nothing here, maybe one of these will trigger another idea in your mind.
  84. U.S. History

    suppose you are a women who has gained political experience in the abolitionist movement. write a letter to the editor explaining your opposition to the exclusion of women from the proposed 15th amendment dear editor; the Fifteenth Amendment to the United
  85. AP Calculus

    The wind chill is the temperature, in degrees Fahrenheit, a human feels based on the air temperature, in degrees Fahrenheit, and the wind velocity (v), in miles per hour (mph). If the air temperature is 32degrees Fahrenheit, then the wind chill is given by
  86. Calc

    The wind chill is the temperature, in degrees Fahrenheit, a human feels based on the air temperature, in degrees Fahrenheit, and the wind velocity (v), in miles per hour (mph). If the air temperature is 32degrees Fahrenheit, then the wind chill is given by
  87. English

    Which words go in the following sentences. Young Charles was born in 1902 and was growing/grew up on a farm. Later, although he has studied/had studied engineering in college, he was more interested in flying planes.
  88. Calculus

    A spherical party balloon is being inflated with helium pumped in at a rate of 12 cubic feet per minute. How fast is the radius growing at the instant when the radius has reached 1 ft?
  89. Math

    The population of the Earth is approximately 6 billion people and is growing at an annual rate of 1.9%. Assuming a Malthusian growth model, find the world population in 42 years
  90. Precalc

    A colony of 1000 weevils grows exponentially to 1750 in one week. a) At what continuous rate is the population growing? b) How many weeks does it take for the weevil population to reach 3000?
  91. Creative Writing. ms.sue

    ok . here's the 2nd && 3rd paragraph: It was when I woke up that I found out that my parents had left for the hospital. This news was much unexpected and caught me by surprise. Immediately I was filled with pleasure and enthusiasm; I had been waiting for
  92. Speed questions

    N city is 635 k.m. away from F city. Mr.L set off from N city to F city at 8:20 am at a speed of 70km/h. Mr.G left from f city to N city 30 min later at speed of 80km/h. At what time did they pass each other? (Both trveling on same road.)
  93. History

    1.)Studies conducted in england during the industrial revolution have shown that children born to poor families were, on average, shorter than those born to wealthier parents. The most likely expalanation for this difference in hieghts is a difference in
  94. math

    Jose left the airport and traveled toward the mountains. Kayla left 2.1 hours later traveling 35mph faster in an effort to catch up to him. After 1.2 hours Kayla finally caught up. Find Jose's average speed/
  95. math

    ok, but what happened to the letters? don't they remain part of the problem? also, how does 15k/20k reduce to 4/5? thanks for your help. joshua 15k/20k should reduce to 3/4 because you can take a 5 out of 15 and be left with 3 and take 5 out of 20 and be
  96. Reading

    1.My big adventure with our town's volunteer fire department started on the first say of summer vacation.The weather during the spring season had been unusually dry.It was Saturday and another hot,arid morning.It was as dry as a bone outdoors.A wildfire
  97. Science

    1: TRUE or FALSE? Elements are pure types of matter. 2: TRUE or FALSE? Atoms are made from molecules. 3: TRUE or FALSE? Chlorophyll is needed for cellular respiration. 4: TRUE or FALSE? Matter and energy flow through food chains. 5: TRUE or FALSE? Chemical
  98. math

    The amount collected per month from a consumer of electrical power consists of two parts- a fixed charge for providing the service and a variable charge which is directly proportional to the number of units of power consumed. An amount of Rs. 700 is
  99. ADVANCED AMC8 GEOMETRY QUESTION/MATH

    In a chess variant, a "lord" can move one space at a time, either upward, or to the right, or diagonally upward and to the right. How many ways are there for a lord to move from the bottom left to top right corner of the 8 by 8 chessboard? This seems like
  100. Physics

    A 1000 kg car moving at 27 m/s from left to right collides head-on with a 1500 kg car moving at 30 m/s right to left. A) Determine the magnitude and direction of the velocity of the wreckage after the collision. B) If a 1000 kg car moving at 36 m/s from