1. Physics

    A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.60 m/s. During the second part, she rides for 36 minutes at an
  2. Physics

    A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.60 m/s. During the second part, she rides for 36 minutes at an
  3. Physics/Math

    The Formula you use is the correct one. However, consider this. If the initial PE existed, wouldn't you have to add it to the initial KE then subtract the PE at some R from the center? We normally make ground zero PE level, but for this... Zero, a
  4. Brief Calculus

    Last one for today... As the financial consultant to a classic auto dealership, you estimate that the total value (in dollars) of its collection of 1959 Chevrolets and Fords is given by the formula v = 303,000 + 1,020t2 (t ¡Ý 5) where t is the number of
  5. math

    The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in meters, L, through the equation: T=2π√((L)/(9.8)) [it is all under square root]
  6. physics

    1 An object is thrown upward from the edge of a tall building with a velocity of 10 m/s. Where will the object be 3 s after it is thrown? Take g=10ms−2 15 m above the top of the building 30 m below the top of the building 15 m below the top of the
  7. Macroeconomics

    How do you calculate the nominal GDP and the real GDP of something? I know the formula for GDP is y=c+I+G+NX but in a problem like an economy produced this many of good#1 and this many of good#2 last year. The price of each good #1 was $8 last year, and
  8. MATHS ( Geometry)

    The ladder of length 13m was kept at a distance from a building to reach on a window on the building . At what height is the window from the ground ?
  9. Math

    A car traveled 281 miles in 4 hours 41 minutes. What was the average speed of the car in miles per hour? 4 hours 41 minutes = 4 × 60 + 41 = 281 minutes Average speed S is given by distance/ time. S = 281 miles/281 minutes =1 mile/minute = 60 miles/hour
  10. Halp me or i fall

    Write the number that makes the statement true. 1. 205.5 m = _____ mm (1 point) 205,500 0.2055 20.55 20,550 2. 199.2 km = _____ m (1 point) 199,200 19.92 19,920 0.1992 Use benchmarks to estimate the sum. 3. + (1 point) 2 1 0 Estimate the difference. 4. 6
  11. physics

    a car manufacturer claims that his car, starting from rest, can attain a speed of 28m/s in a time of 20s. find the average acceleration of the car and the distance it travels in this time?
  12. math 117

    A rectangle has an area of (a^2+4a+4) square inches, and you know that the width is (a+2) inches. You can use long division to determine the length of the box. area = length * width, length = area/width I got this as my answer The length is going to be a+2
  13. Finance

    Assume that Jocelyn is comparing two fixed-rate loan options, a 15 year and a 30 year mortgage. Both options have the same interest rate and amount borrowed. The 30 year, when compared to the 15 year loan will have a 1)_____________ monthly payment and a
  14. math

    1.twice a number is 6 2.four added to a number gives ten 3.twenty five decreased by twice a number twelve 4.if thrice a number added to seven,the sum is ninety eigth 5.the sun of the squares of a number x and 3yields 25 6.the difference between thrice a
  15. Physics

    A runner runs 2.9 km in 9 min and then takes 30 min to walk back to the starting point. (a) What is the runner's average velocity for the first 9 min? _______ km/h (b) What is the average velocity for the time spent walking? _______ km/h (c) What is the
  16. physics

    An inverted image is magnified by 2 when object is placed 22 cm in front of a concave mirror. Determine the image distance and focal length of the mirror.
  17. Math

    what is the best unit of measurements for the length of the distance one end of your textbook to the other end of your textbook? Inch. Foot (MY ANSWER) Yard. Mile.
  18. math circle geometrics

    The distance of a chord from the centre of a circle of radius 7cm is 5cm,what is the length of the chord to the nearest centimetre?
  19. Physics

    A 2.11 cm high insect is 1.31 m from a -125 mm focal-length lens. Where is the image? Distance of the image is ? How high is it? What type is it?
  20. physics

    Ant climb up 5 stairs, each of length 20 cm and height 20 cm . Find the distance covered and displacement covered by ant ?
  21. Physics

    A 2.11 cm high insect is 1.31 m from a 125 mm focal-length lens. Where is the image? Distance of the image is ? How high is it? What type is it?
  22. Math

    the cube has a volume of 8.If point x,the midpoint of AV is joined to point y, the midpoint of edge CD what is the length of the shortest distance from x to y?
  23. elementary math for teachers

    The length of a garden is 24 meters, and the width is 7 meters. Find the diagonal distance across the garden
  24. physics

    Ant climb up 5 stairs, each of length 20 cm and height 20 cm . Find the distance covered and displacement covered by ant ?
  25. Algebra

    Find the distance between (7,0) and (-7,0) The y coordinates of the two points are the same, and the difference in x coordinates is 7 - (-7) = 14. What does that tell you about the direction and length of the line connecting the two points?
  26. Math Arc Length

    Find the arc length corresponding to an angle of a degrees on a circle radius of 4.9 Enter the exact answer. I put the arc length was 4.9api/180 got it wrong. Any help?
  27. Intermediate Algebra

    The plans for a shed call for a rectangular floor with a perimeter of 192 ft. The length is two times the width. Find the length and width. The width is ____ft The length is ____ ft
  28. Calc

    The demand for a commodity generally decreases as the price is raised. Suppose that the demand for oil (per capita per year) is D(p)=800/p barrels, where p is the price per barrel in dollars. Find the demand when p=55. Estimate the decrease in demand if p
  29. Math

    The demand for a commodity generally decreases as the price is raised. Suppose that the demand for oil (per capita per year) is D(p)=800/p barrels, where p is the price per barrel in dollars. Find the demand when p=55. Estimate the decrease in demand if p
  30. Statistics 250

    Final averages are typically approximately normally distributed with a mean of 65 and a standard deviation of 8. Your professor says that the top 10% of the class will receive an A; the next 20%, a B; the next 41%, a C; the next 19%, a D; and the bottom
  31. Physics

    Advanced electronic techniques utilize microscopic structures. Consider a single-turn solenoid in which the radius and the length of the solenoid are both of the order 10 microns, and a parallel plate capacitor in which the plate separation and the radius
  32. Java programming

    I have hard time doing this any help? Rewrite the definition of the method setdate and the constructor with parameters so that the values of month, day, and year are checked before storing the date into the data members. Add a method isleapyear to check
  33. Science

    What is the main source of energy for the water cycle? What type of heat transfer does this provide? The sun is the main source driving it: Sun heats water, water evaporates. What type of heat transfer does it provide? I think that it is radiation, but I'm
  34. Physics check

    1)How is displacement different from distance? Under what conditions can an object travel a certain distance and yet its resultant displacement be zero? Displacement is a vector quantity while distance is a scalar quantity. If an object goes round-trip its
  35. Math

    All these are either rectangles or squares 1.Rectangle. 5 is length and 10 is width 10x5=50 2.Square. 5 is length and 5 is width 5x5=25 3.Rectangle. 6 is length and 8 is width 8x6=48 4.Square. 10 is length and 10 is width 10x10=100 5.Rectangle. 40 is
  36. basic geometry

    A rectangle has width the same asa a side of a square whose perimeter is 20m.the length of the rectangle is 9m. Find the perimeter of this rectangle. 34. The with of a rectangular picture is on-half the length . The perimeter of the rectangle is 72inches.
  37. Physics

    During 2004, japanese scientists successfully tested two solar sails. One had somewhat complicated shape that we shall model as a disk 9 m in diameter and 7.5 um thick. The intensity of solar energy at this location was about 1400 W/m ^2. (a) What force
  38. MATH!

    The length of a triangle is twice the width. The area is 32 square units. Find the length and width. I have the length of the triangle=2x and the width=x... so would the equation be 2x(x)=32 OR NO? Assume the "length" is the height measured from some side
  39. Algebra 1- Exponential Growth & Decay

    How are exponential growth and decay present in the real world? Give at least 2 examples for exponential growth and 2 examples of exponential decay. My Answer: I have only been able to think of one example of exponential growth which is hair growth. From
  40. Physics

    A 50.0 kg parachutist jumps out of an airplane at a height of 1.00 km. The parachute opens, and the jumper lands on the ground with a speed of 5.00 m/s. By what amount was the jumper's mechanical energy reduced due to air resistance during this jump? so,
  41. qmds

    During the 1st year at university, Erica¡¦s father had been sending her $1,000 per month for incidental expenses.Starting from the 2nd academic year, her father decided instead to make a deposit into a savings account on August 1st every year so
  42. MATH

    During the 1st year at university, Erica¡¦s father had been sending her $1,000 per month for incidental expenses.Starting from the 2nd academic year, her father decided instead to make a deposit into a savings account on August 1st every year so
  43. Math!

    Please help me! I do not under stand any of this! I know i should do it on my own. but please help me!! 1.(6.0 x 10^5) x (3.0 x 10^4) = (1 point) 18 x 10^20 18 x 10^9 1.8 x 10^20 1.8 x 10^10 2. (5 x 10^–2) ÷ (2 x 10^3) = (1 point) 2.5 x 10^-5 2.5 x
  44. math

    The chart below shows the average number of movies seen per person in selected countries. Country Average number of movies a person sees per year Turkey. 0.5 Japan. 1.2 United kingdom. 1.3 Finland. 1.3 Austria. 1.5 Germany. 1.8 Spain. 2.2 Sweden. 2.2
  45. MACRO

    Suppose last year's inflation rate was 5%, but Wall Street analysts expect this year's interest rate to be 4%. Which of the following correctly describes people's beliefs according to rational or adaptive expectations theories? A.) According to rational
  46. math

    Yuri has a board that is 98 in. long. He wishes to cut the board into two pieces so that one piece will be 10 in. longer than the other. What should the length of each be Let the shorter board's length be x. The other will be x+10. x + x + 10 = 98 2x = 88
  47. physics

    Seat belts and air bags save lives by reducing the forces exerted on the driver and passengers in an automobile collision. Cars are designed with a "crumple zone" in the front of the car. In the event of an impact, the passenger compartment decelerates
  48. math

    a trianglar course for a sailing race is marked off by buoys. The first lef is 250 meters longer than the second and the third leg is 100 meters shorter then the first. if the length of the course is 2500 meters, find the length of each length
  49. math

    which has greater volume? a) 1.0 kg of feathers or 1.0 kg of lead b) 100 g of gold or 100 g of water c) 1.0 L of copper or 1.0 L or mercury
  50. pressure

    What is the pressure in millimeters of mercury of 0.0140mol of helium gas with a volume of 222mL at a temperature of 30∘C?
  51. Chemistry

    How many moles of mercury will be produced by electrolysis 1 m hg (no3)^2 solution with a current of 2A for 3 hours. Hg (no3)^2=200.6
  52. Physics

    An average family of four uses roughly 1200 liters (300 gallons) of water per day. (One liter = 1000 cm^3.) How much depth would a lake lose per year if it uniformly covered an area of 50 square kilometers and supplied a local town with a population of
  53. Physics

    A golfer rides in a golf cart at an average speed of 3.93 m/s for 43.3 s. She then gets out of the cart and starts walking at an average speed of 1.13 m/s. For how long (in seconds) must she walk if her average speed for the entire trip, riding and
  54. Physics

    "from zero to sixty in 8 seconds" is a description of: a) average speed b) instantaneous speed c)average acceleration d) instantaneous acceleration I know for sure that a) and c) aren't the right answers since average is over a long time period or the
  55. Math - Calculus

    If 75100 dollars is deposited in an account for 13 years at 5.35 percent compounded continuously , find the average value of the account during the 13 years period. The average value in the account is ? ** im alittle confused in how to find the average
  56. MATH CLASS 6th grade

    Every month the Incredible Ice Cream Shop sends a card with a coupon for a free ice cream treat to the members of their ice cream club who were born in that month. The number of members and their birthday month is shown below. Month Number of Club Members
  57. Physics

    A DIVERGING lens has a focal length of 35 cm. (a) Find the image distance when an object is placed 48 cm from the lens. (b) Is the image real or virtual magnified or reduced?
  58. math

    A walking path is shaped like a rectangle with a width 7 times its length "l". What is a simplified expression for the distance between opposite corners of the walking path?
  59. algebra

    an access ramp has a height of five feet and a horizontal distance of 60 feet. find the length of l of the ramp tothe nearest tenth of a foot
  60. speed time distance

    a train running at the speed of 180 km hr crosses a 365 meter long platform in 21sec. what is the length of the train
  61. Physics

    A loudspeaker of mass 25.0 kg is suspended a distance of 1.00 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of 2.50 m . What is the tension in each of the cables?
  62. solubility

    The Ksp of mercury II hydroxide is 3.60 x 10^-26. Calculte the solubility of this compound in g/L
  63. stats

    A random sample of 50 households in community A has a mean household income of X =Rs. 44,600 with a standard deviation s =Rs. 2,200. A random sample of 50 households in community B has a mean of X = Rs. 43,800 with a standard deviation of Rs. 2,800.
  64. stats

    The president of a large university wishes to estimate the average age of the students presently enrolled. From past studies, the standard deviation ó is known to be 2 years. A sample of 50 students is selected and the mean is found to be 23.3 years. a.
  65. finance

    Mrs. Kay who is 24 years old plans to retire at the age of 60. Mrs. Kay would like to be able to withdraw $120,000 per year from her retirement account for 40 years after retirement beginning a year after her retirement. She already has $15,000 in her
  66. Chemisty

    Enrico Fermi was a famous physicist who liked to pose what are now known as Fermi problems in which several assumptions are made in order to make a seemingly impossible estimate. One example of a Fermi problem is "Caesar's last breath" which estimates that
  67. statistics

    minnie went to union high school while mickey went to southern high school. both schools have equally challenging classes, class size, grading policies, etc. the one difference is in their year end tests. the union high test is out of 100 points, whereas
  68. Microeconomics

    A profit-maximizing firm in a competitive market is currently producing 100 units of output. It has average revenue of $10, average total cost of $8, and ficed costs of $200. What are the firm's profit, marginal cost, and average varible cost respectively?
  69. Algebra II

    A salesman drove from his home to a nearby city at an average speed of 40 mi/. He returned home at an average speed of 50 mi/h. What was his average speed for the entire trip? I tried this question, and apparently the answer isn't 45 mph. It's something of
  70. Math(Please help, thank you)

    I am trying to calculate my percent error for an experiment conducted. I need to compare my average density calculated to the accepted average density but I am having trouble doing this because of the conversions. My average density was 0.12 g/mm^3. The
  71. Statistics & Probability

    A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he include in
  72. Statistics & Probability

    A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he include in
  73. calculus

    1. Estimating the Temperature of a Yam Suppose you put a yam in a hot oven, maintained at a constant temperature of 200C. As the yam picks up heat from the oven, its temperature rises.16 (a) Draw a possible graph of the temperature T of the yam against
  74. math

    1. Estimating the Temperature of a Yam Suppose you put a yam in a hot oven, maintained at a constant temperature of 200C. As the yam picks up heat from the oven, its temperature rises.16 (a) Draw a possible graph of the temperature T of the yam against
  75. Finance

    Question 2. 2. If an investor purchases a share of stock for $300, collects a dividend during the year equal to $35 a share, and sells the stock at the end of the year for $289, what is the investor’s return for the year? (Points : 1) 12.11% 8.30% 8.00%
  76. Physics

    X-ray pulses from Cygnus X-1, a celestial x- ray source, have been recorded during high- altitude rocket flights. The signals can be interpreted as originating when a blob of ion- ized matter orbits a black hole with a period of 7.84 ms. If the blob were
  77. Need help by tonite FINANCE

    2. Interest rates A two-year Treasury security currently earns 5.25 percent. Over the next two years, the real interest rate is expected to be 3.00 percent per year and the inflation premium is expected to be 2.00 percent per year. What is the maturity
  78. Urgent!!! Physics

    A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.60 km, 1.25 km), and 1.12 s later its has moved to point B with coordinates (6.16 km, 0.900 km). A. Find the x component of its average velocity between A and
  79. Economics

    What percentage of income is spent on lottery tickets by (a) A poor family with an income of $19,000 per year who purchase the average amount of lottery tickets for their income bracket?
  80. Stat

    A random sample of 50 households in community A has a mean household income of X- =Rs. 44,600 with a standard deviation s =Rs. 2,200. A random sample of 50 households in community B has a mean of _X = Rs. 43,800 with a standard deviation of Rs. 2,800.
  81. Chemistry

    Cola drinks have a phosphoric acid content that is described as `from 0.057% to 0.084% of 75% phosphoric acid, by mass." Estimate the pH range of cola drinks corresponding to this average range of H3PO4 content. I am having trouble with the wording of this
  82. technical drawing

    What length on a scale drawing would represent a distance of 85m on land if the scale was 1:10000
  83. Please Help! Need my work Checked! Physics

    2) You take the following measurements for the distance a toy car travels in 10 seconds during each 5 trials: 157cm, 175cm, 162cm, 168cm, 187cm. What are the relative uncertainties of the distance and time measurements? Which measurement is the most
  84. physics question

    1) Let's continue to investigate your space vacation from last week. Your spaceship, which has a proper length of 300 m, passes near a space platform while you are moving at a relative speed of 86% the speed of light (so v=0.86*c). What is the length of
  85. Algebra

    I been trying this problem i got the wrong answer. This what got. Problem: The fox population in a certain region has an annual growth rate of 8℅ per year. In the year 2012, there were 23,500 foxes counted in the area. What is the fox population
  86. Math

    During a track meet Kelly throws the shotput 51 feet, 50 feet,and 58 feet. Write an expression that represents the length of her average throw in feet. Evaluate the expression.
  87. Science-Damon

    Describe how the movement of Earth is responsible for day and night. The movement of earth is responsible for day and night because as it rotates counterclockwise we tend to have this result. The part of earth that faces the sun experiences daylight, and
  88. Physics

    A 6090kg space probe mobing nose-first toward Jupiter at 105m/s relative to the Sun, fires its rocket engine ejecting 80 kg of exhaust at a speed of 253 m/s relative to the space probe. What is the final velocity of the probe? I should have gotten 108m/s
  89. English

    1. Identify the correctly punctuated sentence. A. Monarch butterflies migrate long distances each year—other butterflies live in southern climates throughout the year. B. Monarch butterflies migrate long distances each year, other butterflies live in
  90. accounting

    In its first year of operations Tower Ltd purchased and paid for widgets costing $50,000. During that year Tower Ltd sold 60 per cent of the widgets. The widgets on hand at the end of the year cost $20,000. The sales were on credit terms. Tower Ltd
  91. math

    The average salary of four managers in a firm is BDT 500000 per annum.every year all ten supervisors of that firm are paid BDT 200000each.what is the overrall yearly salary drawn by them in BDT?
  92. algebra

    on average a child grows 2.5 inches per year from age 2 until adolescence. write an equation that shows how to calculate the height h of a child given the number of years y since age 2 if the child is 33 inches tall at at 2?
  93. Math: Calculus

    Estimate the area under the graph of f(x)=3x^3+5 from x=-1 to x=4, first using 5 approximating rectangles and right endpoints, and then improving your estimate using 10 approximating rectangles and right endpoints. I'm having problem with using the
  94. math

    (a) Use the Midpoint Rule and the given data to estimate the value of the integral I. (Give the answer to two decimal places.) I = int_0^3.2 f(x)dx 1 x f(x) x f(x) 0.0 7.3 2.0 8.8 0.4 6.8 2.4 7.3 0.8 8.1 2.8 7.6 1.2 7.6 3.2 7.3 1.6 8.2 (b) If it is known
  95. statistics

    A researcher conducted a study of the access speed of 40 hard drives and concluded that his maximum error of estimate was 15. If he were to conduct a second study to reduce the maximum error of estimate to 5, about how many hard drives should he include in
  96. Geomatics

    After shooting the trailing edge of the Sun on 11 April 2008, the observed clockwise angle from the mark to the edge of the sun is 259 degrees- 44 minutes- 51 seconds, the latitude is 32 degrees- 47 minutes- 54 seconds North, the longitude is 079
  97. Physics

    A golfer rides in a golf cart at an average speed of 3.10 m/s for 21.0 s. She then gets out of the cart and starts walking at an average speed of 1.60 m/s. For how long (in seconds) must she walk if her average speed for the entire trip, riding and
  98. Geography

    1.Which of the following describes members of an extended family? A. mother, father, sisters, and brothers B. aunts, uncles, cousins, grandparents C. neighbors and classmates D. parents and grandparents 2.Which of the following types of maps shows correct
  99. math

    tisha works 5 days a week as a paramedic. she has 10 holidays off and 3 weeks vacation every year. if tisha never misdes a regular day of work, how many days does she work in each year that is not a leap year?
  100. math 5th grade

    Attendence at the firemans ball has been declining. Each year the number attending is 2/3 of the previous years attendence and the cost of food is 3/4 that of the previous year. In what year will the attendence be less than 1/3 the original attendence?