Questions and answers by visitors named Daniel


  1. In which case would the kinetic energy of particles be increasing? (1 point)

    Metal is melted at 1,300°C. Metal is at room temperature, 37°C. Metal is heated from room temperature to 200°C. Metal is cooled at 1,300°C.

  2. Use the table to answer the question.

    Sample Observation 1 The drop of food coloring spreads slowly. 2 The drop of food coloring spreads very quickly. A student places a drop of food coloring into two water samples. Her observations are shown in the table.

  3. A trough is 14 ft long and its ends have the shape of isosceles triangles that are 4 ft across at the top and have a height of 1 ft. If the trough is filled with water at a rate of 13 ft3/min, how fast (in ft/min) is the water level rising when the water

  4. A jet ski company charges a flat fee of $26.00 plus $3.25 per hour to rent a jet ski. Another company charges a fee of $24.00 plus $3.50 per hour to rent the same jet ski.

    Using a graphing calculator, find the number of hours for which the costs are the

  5. If a lead bullet goes fast enough, it can melt completely when it comes to a halt suddenly, and all it's kinetic energy is converted into heat via friction. Find the minimum speed of a lead bullet (initial temp. = 30.0 C) needed for this to happen.

    So I

  6. Bola and Olu are to share a sum of money in the ratio 2:3. Bola gates N30.00. how

    much does Olu get?

  7. A 1230 kg car drives along a city street at 31.0 miles per hour, and a baseball has a mass of 0.142 kg. What speed must the baseball have if its momentum is to be equal in magnitude to that of the car? Give your result in miles per hour.

  8. Measured along the surface of the water, a rectangular swimming pool has a length of 15.9 m. Along this length, the flat bottom of the pool slopes downward at an angle of 16.9 ° below the horizontal, from one end to the other. By how much does the

  9. What is the minimum value for z=3x-1/2y over the feasibility region defined by the constraints?

    a.-4 b.-5 c.-3 d.-6 constraints x greater than or equal to 0 y less than or equal to 8 y greater than or equal to x y greater than or equal to -1/2x+6

  10. A liquid (density = 1.65 g/cm^3) flows through two horizontal sections of tubing. In the first section the cross-sectional area is 10.0 cm^2, the flow speed is 275 cm/s, and the pressure is 1.20 x 10^5 Pa. This tubing then rises 50 cm to the second

  11. Lawrence added the taxes to the price of an

    item before taking off the discount. Tina took off the discount and then added the taxes. Will they get the same purchase price? Explain why or why not.

  12. Find the area of the square rug if its side is (8x+1) feet. Show your work.

  13. Calculate the mass of camphor (C10H16O) that contains a million carbon atoms.

    Round it to 2 significant digits.

  14. A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 22° C when it was installed. What is its change in length when the temperature drops to a frigid -37° C?

  15. the endpoints of AB are a(-3,5) and b(9,15). find the coordinates of the points that divide AB into 4 congruent segments

  16. The sides of a triangle are xcm, x+3cm and 10cm. If x is a whole number of cm, Find the lowest value of x

  17. A flagpole consists of a flexible, 3.05m tall fiberglass pole planted in concrete. The bottom end of the flagpole is fixed in position, but the top end of the flagpole is free to move. What is the lowest frequency standing wave that can be formed on the

  18. (1) A solid weight 0.04 Newton in air and 0.024 newton when fully immersed in liquid of density 300 kilogram per metre cube.What is the volume of the solid?

    (2)The density of a body is 5*10^3 kilogram per metre cube and it weights 1 newton in air

  19. A cylindrical water tank is 70cm in diameter to begin with it is full of water a leak starts in the bottom so that it looses 10 litres every 1 hour how long will it take for the water level to fall by 20cm.

  20. Peter has 4 more $50 bills than $10 bills in his wallet. If the total amount of money in his wallet is $380, how many $10 bills does Peter have?

    I know the answer but I don't know how to set up the equation.

  21. How would I calculate the molarity of the resulting solution if 25.0mL of 1.50 M HCL solution is diluted to 500 mL. I know you have to change the milliliters to liters by dividing by 1000 and I know that M= Moles of Solute/Liters of Solute but after that

  22. What is the order of

    1.5 x 10^3, 1.4 x 10^-1, 2 x 10^3, and 1.4 x 1-^-2 from least to greatest?

  23. What is the number of grams of Hydrogen in 5.45 x 10^22 molecules NH3?

  24. which of the following musical styles of the 80s has helped shaped current genres, such as country and rock music?

    A. dixie B. jazz C. gospel D. blues

  25. If a projectile is fired with initial velocity of an angle 90° calculate

    I) time of flight II)height III) range of flight Take g=9.8m/s-2

  26. The first term of an AP is s and d=-3/2, find the term whose value is -201/2.

  27. A recipe for rice pudding calls for 2 1/2 cups of milk. The recipe makes 5 servings. How many cups of milk are needed to make 8 servings?

  28. A carpenter constructed a closed wooden box with internal measurements 1.5 metres long ,0.8 metres wide and 0.4 metres high . The wood used in constructing the box was 1.0cm thick and has a density of 0.6g/cm3.

    [1]: volume in cm3 of wood used in consting

  29. Like the Fibonacci sequence, a certain sequence satisfies the recurrence relation an=an−1+an−2. Unlike the Fibonacci sequence, however, the first two terms are a1=4 and a2=1.

    Find a32.

  30. a family budgets 1/2 of its income for housing and 1/3 for food what fraction of their budget do these expenses cover

  31. Why was the act of toleration enacted?

    A To ensure African Americans could Maintain their own religious practices B To provide freedom of religion for the Jews C To retain a separation between the church and state D To safeguard freedom of worship to

  32. Shawn rides his bicycle 9/10 mile to school. On his way to school, he stops at Mike's house, which is 1/5 mile from Shawn's house. Then they both ride to José house, which is 2/7 mile from Mike's house. How far is it from Jose's house to the school?

  33. One half of a number minus 9 is 14

  34. A proposed space station includes living quarters in a circular ring 46.5 m in diameter. At what angular speed should the ring rotate so the occupants feel that they have the same weight as they do on Earth?

  35. A small block of mass m = 1.3 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 54.0 m above the bottom of the loop of radius R = 19.0 m. What is the kinetic energy of the mass at the point A

  36. The ratio of the number of cheesecakes to the number of mango cakes was 3:2. After Baker Lam sold 144 cheesecakes, the ratio became 3:5.

    A) How many cheesecakes did Baker Lam bake at first? B)Baker Lam decided to deliver the remaining cakes to 4 charity

  37. mathematically Evaluate without using tables 2 log base 10 raised 2 power 5 + log base 10 36 - log base10 9 that is, 2log10 5 +log 10 36 - log 10 9

  38. The sum of the first 10th term of an a.p is 255,the sum of the first 20 term is 1010.find the next 2020 term of the progression

  39. Hi there,

    I need to implement in assembly mips an iterative binary search method. Here's my code: # this program implements binary search # the equivalent pseudo code is the following: # first = 0 # last = size -1 # while (last - first > 1) { # mid =

  40. A 821-kg car stopped at an intersection is rear-ended by a 1810-kg truck moving with a speed of 11.5 m/s. If the car was in neutral and its brakes were off, so that the collision is approximately elastic, find the final speed of both vehicles after the

  41. How many liters of water should be added to 20 liters of 40% solution of acid to obtain 30% solution?

  42. f(x)=12x/sinx+cosx

    find f'(-pie) anyone know the answer!!! need help!

  43. A voltaic cell is constructed as follows:

    Ag(s)|Ag^+,(satd Ag2CrO4)||Ag^+(0.110 M)|Ag(s). What is the value of Ecell? For Ag2CrO4, Ksp=1.1*10^-12.

  44. Find the solution subject to the initial conditions.

    dP/dt = -2P P(0)=1 dP/-2P = dt then do i take the antiderivative? what would i do next??

  45. Where is the force the strongest on a magnet? At the poles, in the middle of the magnet, or the force is the same across the entire magnet.

  46. The ages of a mother and daughter are in ratio 8:5.if the daughters age now is 15, what was the mother's age 6 yrs ago

  47. Determinethe kinetic energy of a girl 40kg running with a velocityof 3m/s

  48. Suggest,giving full details, three strategies which parents may use to encourage their children to communicate with them.

  49. if (126)n =36 base 10.find d value of n?

  50. As a school prefect of your school, write a speech delivered at the schools speech price giving day

  51. What are the first and last term of an arithmetic sequence when its arithmetic means 36.6, 33.2, 29.8, and 26.4

  52. The 14th Term Of An Ap Is 98 While The 25th Term Is 173.Find A)19th Term B)13th Term C)56th Term

  53. Explanation of p-10p-24=0

  54. the first of an ap is 5 and the common difference is -3\2

  55. A body accelerates uniformly from rest at 2ms-1.calculate the magnitude velocity after traveling 9 metres

  56. a ball is projected up ward at an angle of 37 degree from the horizontal with an initial velocity of 20 m/s from 12.8m high building find.time of flight,velocity and the height of the ball at t=3s and the range of the ball

  57. Aka scored 82,74 and 90 in three tests. what mark should she score in the fourth test so that her average for the four test would be 85.what was her medium score in the four test?

  58. Aka scored 82,74 and 90 in three tests. what mark should she score in the fourth test so that her average for the four test would be 85.

  59. As a school prefect write a speech about poor leaning and poor teaching in your school

  60. As the senior school prefect of your school, write a speech telling parents teachers association (pta) what your school needs mos.

  61. A spring of natural lenght is extended by 0.04m by a force of 0.04N What will be it lenght when the applied force is 12N

  62. The fourth term of an AP sequence is 1less than twice the second term. If the sixth term is 7.Find the first term.

  63. Find measures of positive and negative angles that are coterminal with the given angle->8π/5

    A)14π/3;-2π/3 B)2π/3;-14π/3 C)11π/3;-2π/3 D)11π/3;-11π/3 Please help

  64. a rectangle has sides of length (2x+3)cm and (x+1)cm. what is the domain of x if the area of the rectangle is greater or equal to 10cm^2

  65. Write speech you would deliver at PTA meeting on the topic drug abuse

  66. In a school of 750 student , 320 are girls 559 stuent some kind of sport if 101 girls do sport how boys also do no sport represent in a venn diagram

  67. A rectangular hockey field is 4m long and 3m wide. Calculate the length of its diagonal

  68. a(x_b)=y(b+a),b the subject of formular

  69. a(x_b)=y(b+a),make b the subject

  70. A 15.0Kg monkey hangs from a cord suspended from the ceiling of an elevator. the cord can withstand a tension of 200N and breaks as the elevator accelerates. what was the elevator's minimum acceleration ( in magnitude the direction)? taken g=10.0meter per

  71. Half times 10cm times 5cm

  72. Determine the exact average rate of change of the function f(x) = -2/x^2 on XE [-2,6].

  73. ayx^-1 + bz

  74. The 43rd term of an A.P is 26 .what is the first term given that the common difference is half

  75. 10.5g of Zinc trioxocarbonate (iv),were heated very strongly to a constant mass and the residue treated with excess hydrochloric acid. Calculate the mass of Zinc chloride that would be obtained

  76. Given that x=log_3 5 and y=log_3 2, rewrite log_3 60 in terms of x and y.

  77. at the beginning of the 1974/1975 year,a man invented 2,000 naira a bank at 12 and half percentage compound interest.if he redraws 650 naira at the end of each school year after payment of interest from the money he his son's school fees.how much did he

  78. In a geometric progression the 3rd term is 4 times the 1st term and the sum of the 2nd term and the 4th term is 30. Find the positive common ratio, the first term, and sum of the first 7 terms

  79. Find the nth term and first three terms of the arithemetic sequence having u4=93 and u8=65.

  80. The 5th and 10th term of an AP are 0 and 10 in respectively.find the 20th term.

  81. The 5th and 10th term of an AP are 0 and 10 respectively.find the 20th term.

  82. If the first term of an AP is equal to one half of the common difference.find the 8th term of the AP.

  83. A lorry travel 10km northward,4km eastward,4km eastward,4km eastward,6km southward 4km westward to arrive at point T

  84. Chocolate chip cookies are delicious. Oatmeal cookies are delicious too.

    Which of the sentences below is the best example of how a writer can combine the sentences to connect the two ideas? As well as chocolate chip and oatmeal cookies are delicious. Both

  85. Issac and Sakura are both doing a science experiment where they are measuring the temperatures of liquid over time graphs that represent each of their data are shown below

  86. Given the average cost function

    AC =2Q-5 +7Q Find an expression for marginal cost. If current output is 20 units. Compute the effect on total cost of an increase in production of 15units.

  87. A ball is thrown vertically upward from the ground with a velocity of 30m/s. (a) how

    long will it take to rise to the highest point? (b) How high does the ball rise? (c) How long after projection will the ball have a velocity of 10m/s upward? A velocity of

  88. The 2nd and 5th terms of a GP are -7 and 57 respectively.deduce the common ratio,the first term, the sum of the first five terms

  89. A rocket reaches a height of 300 √3 m. A crowd observing the launch stands 300 m away. What is the maximum angle θ, in which the crowd observes the launch.

    30 degrees 45 degrees 60 degrees 75 degrees

  90. A man of mass 90kg is moving at a constant velocity.He has kinetic energy of 2205j.Calculate his velocity

  91. The out comes of hewett treaty that proved tobe disastrous for ethiopia were

  92. Find the modulus and argument of the number

    Z= -sin(π/8) - i cos(π/8)

  93. if a force of 100 newton stretches a spring by 5 meters .calculate the

    1)elastic constant 2)workdone

  94. If a force of 100 newton by 5meters . calculate the elastic constant


  95. The 14th term of an ap is 96 while the 25th term is 173.find the 19th term,2 sum of 13th and 56th term.3 product of 6th and 13th term.

  96. What is the mass of air in a living room with dimensions 4.0 m x 6.0 m x 2.5 m? Use ρair = 1.28 kg/m3

  97. Speech work the need for good study habits for successful performance in examination

  98. In what way can l solve the word problem of these,teacher Alonso has224 pieces ofcandy,if there are28students and thecandydivided byevenly.how many pieces will each get?

  99. What is the local time of a place on longitude 64degree East when GMT is 10:00

  100. What is the GPE of a baseball that has a mass of 140 g and is thrown up 15 m into the air before it falls back down?


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