Randy

Newest questions and responses by Randy
  1. physics

    A ball is thrown straight upward and returns to the thrower's hand after 2.75 s in the air. A second ball thrown at an angle of 34.0° with the horizontal reaches the same maximum height as the first ball. (a) At what speed was the first ball thrown? ____

    asked on June 5, 2018
  2. math

    What is (f-g)(x)? f(x)=3x^5+6x^2-5 g(x)=2x^4+7x^2-x+16

    asked on April 9, 2018
  3. math

    What is (f·g)(x)? f(x)=x^4−9 g(x)=x^3+9

    asked on April 9, 2018
  4. math

    What is (f+g)(x)? f(x)=x^2−36 g(x)=x^3+2x^2−10

    asked on April 9, 2018
  5. math

    The function ​f(x)​ is the number of feet below the surface of the water a diver is at x seconds. After 14 s, the diver reached the maximum distance of 22 ft below the surface of the water. The diver stayed in the water for 20 minutes. What is the

    asked on April 9, 2018
  6. math

    Which characteristic is correct for the function f(x)=−2x3+3x ? neither even nor odd even both even and odd odd

    asked on April 9, 2018
  7. Math

    Net monthly income: $4,000 • Expected full mortgage payment (PITI): $1,000 • Student loan payment: $250 • Car payment: $300

    asked on March 17, 2018
  8. PHYSICS! -need help!-

    A combination of an applied force and a frictional force produce a constant total torque of 38 N-m on a wheel rotating about a fixed axis. This combined force acts for 8 s, during which the wheel’s angular speed increases from 0 to 12 rad/s. Find the

    asked on December 5, 2017
  9. PHYSICS! -need help!-

    A gymnast with a mass of 52 kg stands on the end of a uniform balance beam as shown in the figure. The beam is 5.50 m long and has a mass of 250 kg. Each support is 0.54m from the end of the beam. What is the force on the beam due to support 2?

    asked on December 5, 2017
  10. PHYSICS! -need help!-

    A child pushes tangentially on a small hand driven merry- go- round. She is able to accelerate it from rest to 20 rpm in 10 s. Modeling the merry go round as a uniform disk of radius 3.5 m and mass 800 kg, find the torque required to produce that

    asked on December 5, 2017
  11. PHYSICS! -need help!-

    A potter is shaping a bowl on a a potter’s wheel. The wheel rotaes at a constant angular speed. The frictional force between her hands and the clay is 2.50 N. How large is the torque she produces on the wheel if the diameter of the bowl is 14 cm.

    asked on December 5, 2017
  12. Physics!!! HELP!!

    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

    asked on November 7, 2017
  13. -!!Physics!!- Really need help with this!

    Three carts are moving on a frictionless horizontal track as shown in the figure. The 4.00 kg cart is moving to the right with a speed of 7.0 m/s, the 10.0 kg cart is also moving to the right with a speed of 6.0 m/s while the 3.00 kg cart moves to the left

    asked on November 3, 2017
  14. Physics! NEED HELP!

    A 40 kg girl runs up a flight of stairs that is 34 m high. How much work does this require?

    asked on October 19, 2017
  15. Physics!

    A 40 kg girl runs up a flight of stairs that is 34 m high. How much work does this require?

    asked on October 19, 2017
  16. Physics! Please help!!

    HELP!! Two blocks of mass m1 = 320 g and m2 = 725 g are pushed by a force. The coefficient of kinetic friction between each block and the ground is 0.4. The blocks move together (with one pushing the other) with an acceleration of 225 cm/s2. What is the

    asked on October 8, 2017
  17. PHYSICS

    Two blocks of mass m1 = 320 g and m2 = 725 g are pushed by a force. The coefficient of kinetic friction between each block and the ground is 0.4. The blocks move together (with one pushing the other) with an acceleration of 225 cm/s2. What is the value of

    asked on October 8, 2017
  18. Physics! Need help!

    A 60 kg block slides along the top of a 100 kg block. The lighter block has an acceleration of 3.4 m/s2 when a horizontal force F= 370 N is applied. Assuming there is no friction between the bottom 100 kg block and the horizontal frictionless surface but

    asked on October 8, 2017
  19. Physics!

    HELP!!! A box rest on an incline making a 34 angle with the horizontal. It is found that a parallel force to the incline of at least 240 N can prevent the box from sliding down the incline. If the weight of the box is 800 N, find the coefficient of static

    asked on October 7, 2017
  20. physics!

    A taut massless string connects two boxes as shown in the figure. The boxes are placed on an incline plane at θ = 31.00. What is the acceleration of boxes as they move down the incline, given m2 = 1.6 kg, m1 = 7.6 kg, μ2 = 0.10 and μ1 = 0.20. Please

    asked on October 7, 2017
  21. Physics!

    No matter what i do i can't seem to find a reasonable answer for this problem! I've done everything I can think of. Block m1( 7 kg ), lies on an incline plane with a coefficient of kinetic friction of 0.15. m1 is connected to mass m2 by a massless rope

    asked on October 7, 2017
  22. Sociology

    What were some barriers to radical social change that could have made things better for freed people following the Civil War and Emancipation Proclamation?

    asked on September 23, 2016
  23. Algebra

    In a recent year, a single person could expect to pay $4200 in income taxes on an adjusted gross income of $30,000. How much more tax should the person expect to pay if her adjusted gross income increased by $3000, knowing that this would not move her into

    asked on September 5, 2016
  24. math

    still need help: Write an arithmetic sequence that has a common difference of 4 and the eighth term is 13. What is the first term? What is the 23rd term in the sequence

    asked on June 18, 2016
  25. Algebra

    I am so lost on these problems. Write a geometric sequence that starts with 3 and has a common ratio of 5. What is the 23rd term in the sequence. Write an arithmetic sequence that has a common difference of 4 and the eighth term is 13. What is the first

    asked on June 17, 2016
  26. English

    Which of the following is unimportant for an introduction in formal or academic writing? 1.Entertaining the audience. 2.Establishing the key point the piece of writing will make 3.Discussing your opinion on the topic for at least three sentences.

    asked on April 25, 2016
  27. Chem

    Difference between K, K+, and K−. The question asks to put them in order from smallest to largest in radius but I don't understand the difference from them in terms of radius since they are the same element

    asked on March 10, 2016
  28. Math

    2. Reed is on the ground looking up at Aaron, who is in a hot air balloon that is 140 ft above the ground. Reed and Aaron are 350 feet apart. What angle is Reed looking up at?

    asked on February 22, 2016
  29. chemistry

    What is the pH of a buffer solution that has CH3CO2H=0.68 M and CH3CO2- =0.58 M, and has 0.01 M concentration of H2SO4 added to it? Ka of acetic acid is 1.8x10-5

    asked on November 11, 2015
  30. chemistry

    The solubility of Na3(PO4) is 0.025 M. What is the Ksp of sodium phosphate?

    asked on November 11, 2015
  31. chemistry

    What is the pH of a 0.5 M solution of NaHCO3? Kb = 2.4x10-8 (base)

    asked on November 11, 2015
  32. Geometry

    What is the pOH if the (OH-) is 1 x 10 -10 ? Please show your work? Plug the numbers into the formula

    asked on September 24, 2015
  33. Geometry

    How do you find the coordinates of the image of J (-7,-3) after the translation (x,y) (x-4,y+6)

    asked on September 14, 2015
  34. Physics

    I've read all my resource materials and looked for outside resources already and i can't find an equation for this. I would appreciate any help

    asked on July 8, 2015
  35. physics

    The angular speed of a rotor in a centrifuge increases from 428 to 1400 rad/s in a time of 6.26 s. (a) Obtain the angle through which the rotor turns. (b) What is the magnitude of the angular acceleration?

    asked on July 7, 2015
  36. Geomerty

    If the length of one side of a right triangle is known, the length of the other two sides with corresponding angles can be found. Answers: - only the hypotenuse can be found - this is not true -this is true only if the angles are given in radians What is

    asked on May 12, 2015
  37. MATH

    what is the rule of the function table if the input is 1,8,5,10 and the output is 4,6,1,5

    asked on February 23, 2015
  38. calculus

    When an oil well burns, sediment is carried up into the air by the flames and is eventually deposited on the ground. Less sediment is deposited further away from the well. Experimental evidence indicates that the density (in tons per square mile) at a

    asked on February 19, 2015
  39. physics

    a boy of mass 40kg and a girl of 30kg play on a see saw of negligible weight.if the boy sits 270cm from the pivot of the see-saw where must the girl sit to make it balance

    asked on February 8, 2015
  40. Math

    Write whether the statement is true or false. If false write a true statement. 1. A right triangle has three right angles. False a right triangle has 1 right angle 2. A triangle that has three sides of the same length is an equilateral triangle. True

    asked on January 25, 2015
  41. Math

    True or false and if false write a true statement 1. A right triangle has three right angles. 2. A triangle that has three sides of the same length is an equilateral triangle. 3. An obtuse triangle has two angles that are acute. 4. In a right triangle the

    asked on January 24, 2015
  42. Calculous

    g(x) = x^4-8x^3-16x^2+128x the graph goes through the x through (-4,0) , (0,0) (4,0), (8,0) horizontal axis has a scale of 2,4,6,8,10 (each tick increases by 2) Y-axis value that is the highest is (-4,30) and (8,30) Assume g(x) = k(x-p)(x-q)(x-r)(x-s) p

    asked on December 5, 2014
  43. Calculous Finding K, using zeros

    Suppose f(x) has zeros at x = -3, x = 3, x = 5, and a y-intercept of 17. In addition, f(x) has the following long-run behavior: as x -> +-infinity, y -> +infinity Find the formula for the polynomial f(x) which has the minimum possible degree F(x) =

    asked on December 5, 2014
  44. PHI

    What is Larmer’s criticism of Duska’s argument? Loyalty is relative. Loyalty does not need to be reciprocal, it can still be directed at persons in the firm and not merely to the firm, an economic motive does not rule out a moral justification for

    asked on November 22, 2014
  45. MATH

    Find the formulas for the functions f(g(x)) and g(f(x))when f(x) = 2/x and g(x) = 2x^2-1 f(g(x)) = ? g(f(x)) = ? for f(g(x)) would it be 2/x(2x^2-1) or g(f(x)) 2x^2(2/x)-1? Would i solve like this? also when I tried to input the answer after solving didn't

    asked on November 21, 2014
  46. Math CHECK!

    5 / 1 -sin theta + 5/ 1 - sin theta the correct answer is 25 / cos^2 theta or 10 / cos^2 theta

    asked on November 14, 2014
  47. Math

    sec 7pi/4 without a calculator Find the exact answer

    asked on November 7, 2014
  48. PHI

    Which of the following does Peter Singer assert about the principle of equality? (Points : 1) People should have equal rights because they are factually equal. People with higher abilities, it stands to reason, should have greater rights. Different groups

    asked on November 2, 2014
  49. chemistry

    Isotonic saline is 0.89% NaCl (w/v). Suppose you wanted to make 1.0 L of isotonic solution of NH4Cl. What mass of NH4Cl would you need? Question 23 options: 1.6 g 8.1 g 8.9 g 54 g

    asked on October 30, 2014
  50. Math Trig

    A kite flier wondered how high her kite was flying. She used a protractor to measure an angle of 40 degrees from level ground to the kite string. If she used a full 120-yard spool of string, how high, in feet, was the kite? (Disregard the string sag and

    asked on October 24, 2014
  51. Trig calc

    A) P is approximately (0.883, 0.469), is a point on the unit circle with angle 28 degrees estimate the following. Sin 152 degrees = Cos 152 degrees =

    asked on October 23, 2014
  52. Trig / Calc

    What angle (in degrees) corresponds to 18.96 rotations around the unit circle? Enter the exact decimal answer.

    asked on October 23, 2014
  53. Pre-Calculous (Trig)

    The Singapore Flyer, currently the world's largest Ferris wheel, completes one rotation every 37 minutes.1 Measuring 150 m in diameter, the Flyer is set atop a terminal building, with a total height of 165 m from the ground to the top of the wheel. When

    asked on October 17, 2014
  54. SAVE ME ( MATH)

    function p(t) has a domain of 1 less than or equal to t less than or equal to 12 range of -40 < p less than or equal to 160 Find the domain and range for. Enter the exact answers A) P(1/4t+4) B) -1/10p(2t)+46

    asked on October 17, 2014
  55. history

    Roosevelt addressed the struggles of industry with the National Industrial Recovery Act (NIRA). Which of the following was not one of the main components of this effort? African American labor assistance Public works projects National Recovery

    asked on September 27, 2014
  56. US History

    Women made many contributions during World War I. Which area did they make the least impact? Nurses in the war Heavy industry Maintaining farms Truck drivers

    asked on September 27, 2014
  57. math

    How many thousands of people live in Boston ma.if population is 617,594

    asked on September 17, 2014
  58. math

    order the numbers from least to greatest. _ 1 4/5, 1.78, 1 5/6, 7/4, 1.7, 1 8/11 I am confused on going back and forth between decimals and fractions.

    asked on September 11, 2014
  59. statistics

    You can answer any questions from the questions on an exam. In how many different ways can you choose the questions, assuming that the order in which you choose the questions is irrelevant?

    asked on August 6, 2014
  60. Statistics

    Determine whether the following statements are true or false: 1. P(A and B)=P(B|A)P(B). 2. When A and B are independent, P(A)=P(B). 3. When A and B are independent, P(A|B)=P(A). 4. When A includes B, P(A|B)=1. 5. When B is the complement of A, P(A or B)=1.

    asked on May 22, 2014
  61. Statistics/Probability

    So I tried solving the first one and apparently failed miserably, attempted both twice and got it wrong each time and I have one submission attempt left, so any help is definitely appreciated! 1. Hotels R Us has kept the following recordes concerning the

    asked on May 21, 2014
  62. Statistics/Probability

    So I tried solving the first one and apparently failed miserably, attempted both twice and got it wrong each time and I have one submission attempt left, so any help is definitely appreciated! 1. Hotels R Us has kept the following recordes concerning the

    asked on May 20, 2014
  63. math

    Trail mix is sold in 1-pound bags. Mary will buy some trail mix and re-package it so that each of the 15 members of her hiking club gets one 25_ -pound bag. How many 1-pound bags of trail mix should Mary buy to have enough trail mix without leftovers?

    asked on May 11, 2014
  64. chemistry

    A sprinter set a high school record in track and field, running 200.0 m in 20.9s . What is the average speed of the sprinter in kilometers per hour

    asked on September 8, 2013
  65. chemistry

    While in Europe, if you drive 105km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 22.0mi/gal? Assume that 1euro = 1.26 dollars.

    asked on September 8, 2013
  66. chemistry

    The conversion factor relating miles to meters is 1 mile= 1610m The speed of light is 3.00×10^8 m/s. How fast is this in miles per hour (miles/h \rm miles/h)?

    asked on September 8, 2013
  67. Math

    Search Results for "Ruth has some money in a savings account. after the bank adds 5% interest to her account , she has $126. How much was in her account before the interest was added" How do i write this in an equation?

    asked on September 3, 2013
  68. math 160

    If the mean of a set of data is 20.00, and 12.20 has a z-score of –1.30, then the standard deviation must be

    asked on June 10, 2013
  69. Statistics

    *Give all probabilities to two decimal places. Three daily newspapers are published in a large city. Suppose we have the following facts about the people in the city: 60% read Newspaper A. 34% read Newspaper C. 72% read Newspaper A or Newspaper B. 18% read

    asked on March 12, 2013
  70. Statistics

    A box contains five numbered balls (1,2,2,3 and 4). We will randomly select two balls from the box (without replacement). (a) The outcome of interest is the number on each of the two balls we select. List the complete sample space of outcomes. (b) What is

    asked on March 12, 2013
  71. Physics

    Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the fastest accelerating animals, for it can go from rest to 34.7 m/s in 3.03 s. If its mass is 102 kg, determine the average power developed by the cheetah

    asked on February 26, 2013
  72. Physics

    In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 2.95 m/s. However, this speed is inadequate to compensate for the kinetic friction between the puck and the ice. As a result, the puck travels only one-half the

    asked on February 26, 2013
  73. Physics

    A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. The student has a mass of 78 kg, and the height of the water slide is 12.5 m. If the kinetic frictional force does

    asked on February 26, 2013
  74. Physics

    A small lead ball, attached to a 1.50-m rope, is being whirled in a circle that lies in the vertical plane. The ball is whirled at a constant rate of three revolutions per second and is released on the upward part of the circular motion when it is 0.75 m

    asked on February 26, 2013
  75. Physics

    The drawing shows a skateboarder moving at 5.40 m/s along a horizontal section of a track that is slanted upward by 48.9 ° above the horizontal at its end, which is 0.582 m above the ground. When she leaves the track, she follows the characteristic path

    asked on February 26, 2013
  76. Physics

    A bicyclist rides 2.78 km due east, while the resistive force from the air has a magnitude of 6.52 N and points due west. The rider then turns around and rides 2.78 km due west, back to her starting point. The resistive force from the air on the return

    asked on February 26, 2013
  77. Physics

    The concepts in this problem are similar to those in Multiple-Concept Example 4, except that the force doing the work in this problem is the tension in the cable. A rescue helicopter lifts a 72.4-kg person straight up by means of a cable. The person has an

    asked on February 26, 2013
  78. Physics

    A person pushes a 23.5-kg shopping cart at a constant velocity for a distance of 30.3 m on a flat horizontal surface. She pushes in a direction 31.5 ° below the horizontal. A 37.3-N frictional force opposes the motion of the cart. (a) What is the

    asked on February 26, 2013
  79. math

    a car weighing 15000N rounds a curve of 60m. radius banked at angle of 30 degrees.find the frictional force acting on the tires when the car is travelling at 100kph.The coefficient of friction between the tires and the road is 0.90.

    asked on February 23, 2013
  80. Physics

    Traveling at a speed of 15.5 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.640. What is the speed of the automobile after 1.45 s have elapsed?

    asked on February 13, 2013
  81. Physics

    A 4.51-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.382. Determine the kinetic frictional force that acts on the box when the elevator is (a) stationary, (b)

    asked on February 13, 2013
  82. Physics

    A rocket blasts off from rest and attains a speed of 30.4 m/s in 10.3 s. An astronaut has a mass of 60.1 kg. What is the astronaut's apparent weight during takeoff?

    asked on February 13, 2013
  83. Physics

    The sun is more massive than the moon, but the sun is farther from the earth. Which one exerts a greater gravitational force on a person standing on the earth? Give your answer by determining the ratio Fsun/Fmoon of the magnitudes of the gravitational

    asked on February 13, 2013
  84. Physics

    A space probe has two engines. Each generates the same amount of force when fired, and the directions of these forces can be independently adjusted. When the engines are fired simultaneously and each applies its force in the same direction, the probe,

    asked on February 13, 2013
  85. Physics

    At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 940 m/s2 and the vertical or y component of its acceleration is 710 m/s2. The ball's mass is 0.35 kg. What is

    asked on February 13, 2013
  86. Physics

    Two horizontal forces, F1-> and F2-> , are acting on a box, but only F1->is shown in the drawing. F2-> can point either to the right or to the left. The box moves only along the x axis. There is no friction between the box and the surface. Suppose that

    asked on February 13, 2013
  87. physics

    A tiger can run at approximately 100 km/hr (27.7 m/s) and a zebra at 80 km/hr (22.2 m/s). If both animals are running at full speed, with the zebra 70.0 m ahead, how long before the tiger catches its prey? a) 12.6 s b) 25.2 s c) 6.30 s d) 10.7 s

    asked on February 13, 2013
  88. math

    If pump A and pump B work together, they can fill a pool in 4 hours. Pump A, working alone, takes 6 hours to fill the pool. How long would it take pump B, working alone, to fill the pool?

    asked on January 31, 2013
  89. SCIENCE

    how do we derive the formula at=vf-vi if we will find acceleration? please have it step by step. Thank you

    asked on January 15, 2013
  90. Science

    Please complete the formula and process in arriving the answer. Please. Thank you. Nathaniel is driving his sports car down a four lane highway at 40m/s. He comes up behind a slow moving dumptruck and decides to pass it in the left hand lane. If Nathaniel

    asked on January 14, 2013
  91. Science

    Nathaniel is driving his sports car down a four lane highway at 40m/s. He comes up behind a slow moving dumptruck and decides to pass it in the left hand lane. If Nathaniel can accelerate at 5m/s^2, how long will it take for him to reach the speed of

    asked on January 14, 2013
  92. Physics

    A dog is tugging forward on a leas held by a physics student who is standing still. The dog is tugging with a force of 63N. The student estimates the leash to be at an angle of 25 degrees above the ground. What is the tension in the leash?

    asked on January 13, 2013
  93. Math

    1) Solve equation 3r+5 _____ + 2 = 2r to find the value of r? 2 A. 2 1/7 B. 3 2/3 C. 15 D. 10 2) which is these is a rational number. A. Sq root of 14 B. -sq root of 9 C. -sq root of 34 D. Sq root of 72

    asked on December 6, 2012
  94. Math

    1) what is the length of the diagonal of a square whose sides are 3 inches long. A. 9 inches B. 3 square root 2 inches**** C. 6 inches D. 18 inches 2) which set of measure could be the side lengths of a right triangle? A. 0.9 cm, 1.2 cm, 1.5 cm B. 4 in, 4

    asked on December 6, 2012
  95. Algebra

    - There are less than 40 members of the Landowners Association. These memebers vote on various proposals. All the members were present at a meeting and all voted on each of two proposals. On the first proposal 4 times as many memebers voted yes to those

    asked on December 5, 2012
  96. Algebra

    A car rental company charges $24 per day plus $0.75 per mile driven. a) Let C = total cost; D = number of days and M = number of miles b) Write the equation for the total cost in terms of C, D and M c) Use the equation to determine the total cost for a

    asked on December 4, 2012
  97. math

    how many terms are there on a 1/2 (a+b)? and are they monomial or binomial?

    asked on November 27, 2012
  98. Chemistry

    Help with lab report Need Help finishing my lab report.KNOWN VALUES ARE V OF HCL=50ML,M=2.188.V OF NAOH=55.3ML,M=2.088.INTIAL TEMP FOR HCL=22.5C,NAOH IS 23C.this is for part A: Mass of final NACL solution assuming that the density of a 1 M Nacl solution is

    asked on October 26, 2012
  99. ECON 4346

    4-The three fundamental economic questions of what, how, and for whom: a-exist because of scarcity. b-are much more serious in a socialist system. c-are not serious in a capitalistic system. d-are not relevant in the industrialized world of today. 5-When

    asked on September 19, 2012
  100. math

    evaluate the following expression _(5)P_0=

    asked on August 28, 2012

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