Most popular questions and responses by Daisy
  1. Chemistry

    Consider the following cell: Pt|H2(g, 0.460 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.00 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrogen ion

    asked on March 19, 2012
  2. Ed. Tech

    After creating a column heading and/or typing text within a column, what must you do to move text to the next column? A. Add a column break B. Select the next column and start typing C. Highlight the next column D. Change the page orientation Is the answer

    asked on September 7, 2014
  3. Chemistry

    What is the specific gravity of alcohol having a density of .79 g/mL?

    asked on September 4, 2012
  4. TRIG

    A circular power saw has an 8-1/2 inch diameter blade that rotates at 4400 revolutions per minute. a)Find the angular speed of the saw blade in radians per minute. b)Find the linear speed in feet per minute of one of the 24 cutting teeth as they contact

    asked on September 23, 2012
  5. pre-calculus

    What is the exact value of sin 225

    asked on July 27, 2015
  6. Chemistry

    One type of sunburn occurs on exposure to UV light wavelength in the vicinity of 325nm. How many photons are in 1.00 mJ burst of this radiation?

    asked on November 13, 2007


    asked on September 26, 2007
  8. Science!

    An oven is a technological system. Which of the following describes an input into this system? A. Setting the temperature B. Burning gas releases heat. C. A thermostat monitors the temperature and increases the gas flow when the temperature falls too low.

    asked on September 9, 2014
  9. Physics

    A man jogs at a speed of 1.7 m/s. His dog waits 2.5 s and then takes off running at a speed of 4.1 m/s to catch the man. How far will they have each traveled when the dog catches up with the man? help me set up the equations please!

    asked on August 24, 2012
  10. Pre-calc

    which expression completes the identity sin ucosv=?

    asked on July 27, 2015
  11. Physics

    Two ultrasonic sound waves combine and form a beat frequency that is in the range of human hearing for a healthy young person. The frequency of one of the ultrasonic waves is 84 kHz. (The range of hearing for a healthy young person is 20 Hz to 20 kHz.) (a)

    asked on February 16, 2017
  12. pre-calculus

    find the exact value of sin 112.5 in fraction form

    asked on July 27, 2015
  13. science

    mohan travels at 20m/s from home to market and returns at 25m/s find his average velocity for the entire journey

    asked on May 6, 2017
  14. Statistics

    Of the 40 students in a gym class, 13 played volleyball, 12 ran track (4 of whom did a push up), and the remainder were absent. A.) What proportion of the class ran track? B.) What percentage played volleyball? C.) What percentage of the runners did a push

    asked on August 25, 2016
  15. Maths, geography, life sciences and physical scien

    Identify three courses or study fields you are interested in following after grade 12.provide two reasons why you find this a suitable course for each choice

    asked on March 6, 2016
  16. Physics

    A 26.0 g object moving to the right at 17.0 cm/s overtakes and collides elastically with a 10.0 g object moving in the same direction at 15.0 cm/s. Find the velocity of each object after the collision. a) 26.0 g object b) 10.0 g object

    asked on July 16, 2010
  17. Physics

    A 2.00 ✕ 106 Hz radio signal is sent a distance of 7.30 ✕ 1010 meters from Earth to a spaceship orbiting Mars. Approximately how much time does it take the radio signal to travel from Earth to the spaceship?

    asked on April 17, 2017
  18. Physics 6A

    A 0.140- baseball traveling 34.0 strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 12.0. What was the magnitude of the average force applied by the ball on the glove?

    asked on April 26, 2012
  19. Pre-Cal

    The diagonal and the longer side of a rectangle make an angle of 43.2. If the longer side is 12.6cm, find the length of the shorter side.

    asked on January 29, 2008
  20. pre-cal

    A rectangle is 9.2m by 3.8m. What angle does its diagonal make with its longer side??

    asked on January 29, 2008
  21. physics

    a car traveling at 7.0 m/s accelerates uniformly at 2.5 m/s TO REACH A SPEED OF 12.0 M/S HOW LONG DOES IT TAKE FOR THIS ACCELERATION TO OCCUR?

    asked on September 26, 2007
  22. Home school community

    what is three issues related to role confusion that a teacher may feel communicate?

    asked on September 10, 2011
  23. Physics 6A

    A jet pilot takes his aircraft in a vertical loop. If the jet is moving at a speed of 1100 at the lowest point of the loop: A)Determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 5.5 's

    asked on May 9, 2012
  24. Math

    Round 1.98 to the nearest tenth

    asked on April 13, 2016
  25. AP Physics B

    A 2189 kg car moving east at 9.73 m/s collides with a 3285 kg car moving north. The cars stick together and move as a unit after the collision, at an angle of 35.7◦ north of east and at a speed of 4.79 m/s. What was the speed of the 3285 kg car before

    asked on November 1, 2012
  26. English

    I have to find the adverb in each sentence. Then I have to identify the verb it modifies. 1.)Native Americans originally developed lacrosse. Adverb- originally. Verb-developed. 2.)It was first played by the Iroquois. Adverb- first. Verb- played. 3.)It was

    asked on January 14, 2015
  27. TRIG

    An airplane flying at 550 miles per hour has a bearing of 53°. After flying for 2.5 hours, how far north and how far east will the plane have traveled from its point of departure? I'm having a REALLY hard time with this one. I don't know what I'm doing

    asked on October 16, 2012
  28. AP Physics

    Momentum One of those Civil War cannons is fired. The Cannon has a mass of 873kg It fires a 35.0kg cannon ball at a velocity of 145 m/s at an elevation angle of 35.0 degrees. The length of the barrel is 2.10m. (a) What is the recoil velocity of the

    asked on January 8, 2013
  29. Math

    Solve the Go.a ball was dropped from a height 80m above a concrete floor. It rebounded to the height 1\2 of its previous height at each rebound. After how many bounces is the ball 2.5 high

    asked on October 30, 2017
  30. english

    In "In Just-," the poet uses the words "and bettyandisabel come dancing / from hop-scotch and jump-rope and / it's / spring" to create a mood of (Points : 5) boring routine. happy activity. peaceful days. hopeless dejection.

    asked on January 26, 2015
  31. social studies

    How did the Protestant Reformation in Europe influence the settlement of North America? A. European settlers of different religions choose to establish new colonies in order to spread their faith and practice their beliefs. B. religious thinker John Calvin

    asked on September 8, 2014
  32. pre-calculus

    which of the following is a solution to 3tan^3x=tanx? A.) 60 degrees B.) 120 degrees c.)150 degrees D.)240 degrees E.)300 degrees

    asked on July 27, 2015
  33. physics

    A block is projected up a frictionless inclined plane with initial speed v0 = 8.42 m/s. The angle of incline is è = 58.4°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?

    asked on October 9, 2010
  34. chem

    what substance is oxidized in following reaction 4 HCl+MnO2 and Cl2+2H2O+MnCl2

    asked on September 20, 2010
  35. History

    Which answer best explains how Ralph Waldo Emerson's Concord Hymn is an example of Transcendentalism? It emphasizes war, violence, and victory. It emphasizes nature, feelings, and memory. It emphasizes the importance of social reform.*** It emphasizes

    asked on April 11, 2017
  36. P.E

    Happiness, sadness, and fear are examples of blank emotions. A. Learned B. Primary C. Secondary D. Innate Is the answer A?

    asked on September 9, 2014
  37. TRIG.

    From a point 50 feet in front of a church, the angles of elevation to the base of the steeple and the top of the steeple are 35° and 47° 20', respectively. Find the height of the steeple. I missed class this day and have no idea how to go about this

    asked on October 15, 2012
  38. Math

    Admission to the country fair cost $9per person the ride tickets cost $2.50 each. Write an equation representing total cost

    asked on September 26, 2017
  39. Physics

    The Question is: An objective lens of a telescope has a 1.90 m focal length. When viewed through this telescope, the moon appears 5.25 times larger than normal. How far apart are the objective lens and the eyepiece when this instrument is focused on the

    asked on September 14, 2017
  40. Physics!!!!

    A 78 kg trampoline artist jumps vertically upward from the top of a platform with a speed of 4.4m/s. v=7.7m/s If the trampoline behaves like a spring of spring constant 5.6×104 N/m , how far does he depress it?

    asked on May 18, 2012
  41. Math

    Find the value of x for which l is parallel to m. 3. 19x;18x;27x 4. 5x;2x;(5x + 40)

    asked on May 21, 2019
  42. math

    Estimate the value of this expression by rounding each number to the nearest unit. (1.63)(9.95)(2.46) Plesse help..

    asked on December 6, 2014
  43. Physics 6A

    A 330- piano slides 3.8 down a 23 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. a.Determine the work done by the force of gravity. b.Determine the work done by the man on the piano.

    asked on May 11, 2012
  44. Algebra

    4 9 3 Y • y • y

    asked on October 10, 2019
  45. science

    What is science is the question and btw Im in grade 8 so could u plz give an answer according to that like explain what is science first and then wht r its branches plzzz!!!

    asked on September 4, 2013
  46. P

    A driver in a car traveling at a speed of 56 mi/h sees a deer 91.2 m away on the road. Calculate the magnitude of the acceleration necessary for the car to stop just barely missing the deer (assuming that the deer does not move in the meantime)

    asked on September 1, 2012
  47. Math

    Hi! im confused in this question.A polar bear weighs approximately 453 grams at birth.the average weight of an adult male polar bear is 635 kilograms. What is the weight of an adult male polar bear in grams?

    asked on October 8, 2019
  48. Math

    Luang enlarged a photograph to 1 3/4 times its original size. The original photograph was 3 1/2wide. What was the width of the enlarged photograph? A.2 5/8 B.3 3/8 C.5 1/4 D.6 1/8

    asked on October 6, 2019
  49. Math

    3.455 round off to the nearest tenths

    asked on March 8, 2015
  50. Math

    1.Quadrilateral GHJK has vertices at the following coordinates: G(-2,-6), H(-8,-8), J(-6,-2), and K(0,0), what would be the new vertices if the quadrilateral was dilated by the scale factor of 1.5? G':_________ H':_________ J':_________ K':_________ Could

    asked on February 7, 2015
  51. CHEM

    A student used 10 mL water instead of 30 mL for extraction of salt from mixture. How may this change the percentage of NaCl extracted? My book says: % NaCl= (grams of NaCl / total grams of mixture) x 100 What I don't get is if it does change the

    asked on September 4, 2012
  52. maths

    when acontainer is 1/4 filled with water it weighs 2.5kg. when it is completely filled with waterr it weighs 3.7kg.What is the weight of the empty container?

    asked on August 24, 2019
  53. math

    A factory kept increasing it's output by the same percentage every year .find the percentage if it is known that the output is doubled in the last two years.

    asked on December 4, 2016
  54. Physics

    A box of mass m = 59.0 kg (initially at rest) is pushed a distance d = 84.0 m across a rough warehouse floor by an applied force of FA = 204 N directed at an angle of 30.0° below the horizontal. The coefficient of kinetic friction between the floor and

    asked on October 23, 2016
  55. AP Physics B

    An air puck of mass 0.102 kg is tied to a string and allowed to revolve in a circle of radius 1.06 m on a horizontal, frictionless table. The other end of the string passes through a hole in the center of the table and a mass of 0.78 kg is tied to it. The

    asked on November 9, 2012
  56. PHYSICS 6A centripetal acceleration

    A jet pilot takes his aircraft in a vertical loop. If the jet is moving at a speed of 1100km/h at the lowest point of the loop: A)Determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 5.5g's

    asked on May 9, 2012
  57. Physics

    A horse with the mass of 1131 kg pull on the rope attached to a pulley to lift a 58 kg stone up a wall. If the wall is 14.1 m tall how much work will the horse due to lift the stone up the wall in 15.7 seconds?

    asked on May 6, 2019
  58. AP Physics B

    A 0.408 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.0886 kg puck moving initially along the x axis with a speed of 3.14 m/s. After the collision, the 0.0886 kg puck has a speed of 2.14 m/s at an angle of 38◦ to the

    asked on November 1, 2012
  59. Math

    Juan loses 30% of his weekly wage due to stoppage. If he takes home $122.50 how much does he earn a week

    asked on October 17, 2019
  60. Pre-Calculus

    State the amplitude of the following function: f(x)= 5 x sin(2x)

    asked on April 6, 2008
  61. AP Physics B

    A soap bubble of index of refraction 1.43 strongly reflects both the red and the green components of white light. What minimum film thickness allows this to happen? (In air,the wavelength of red light is 703 nm, of green light 502.143 nm.) Answer in units

    asked on February 19, 2013
  62. Calculus

    Twins, Pierre and Francesca were each given 100 dollars on their 15th bday. they immediately put ther money into their individual money boxes. Each week throughout the next year they added a portion of their weekly pocket money. Puerre added 10 each week.

    asked on January 22, 2008
  63. Graphing Linear Equations and Inequalities

    Fill in the t-table below for the equation. Then graph the line on the grid by selecting two of the points from your table. 3x+4y=-16 x y −4 0 4

    asked on November 14, 2016
  64. Language

    A naturalistic language-learning environment

    asked on September 29, 2011
  65. economics

    differences between capital economy and communist economies

    asked on February 5, 2008
  66. Chemistry

    The air was in a cylinder equipped with the piston absorbs 565 duels of heat and expands from an initial volume of .10 l to a final volume of .85 L against an external pressure of 1.0 ATM what is the change an internal energy of the air within the cylinder

    asked on November 4, 2015
  67. Social studies

    I need Sam Houston and Mirabeau Lamar -background -problems each of them faced -Native American -military spending -annexation I want them to be separate like contrast

    asked on January 21, 2015
  68. Survey of Mathematics

    Suppose a car rental agency gives the following choices: Option A: $30 per day plus 40 cents per mile Option B: flat $50 per day (unlimited miles) At what mileage are both rates the same if you rent the car for 3 days?

    asked on December 4, 2014
  69. South America

    is this true or false To accurately label exact locations on a map, geographers go to that specific location answers.

    asked on January 23, 2014
  70. Science

    Dunbar, South Africa identify at least two serious environmental problems, such as soil degradation, air or water pollution, pesticide misuse, overpopulation, wildlife extinction or threatened biodiversity, and deforestation, that impact this region. What

    asked on November 3, 2007
  71. Physics

    I am taking an online course in physics and I need to write a short paper on Analog and digital information. Below are the questions that guide me through the paper. I am having a hard time finding a website that can explain this to me. There is no text

    asked on February 14, 2018
  72. Calculus

    Use the General Power Rule or the Shifting and Scaling Rule to find the derivative of the function given below. y = e^(16 – 3x^2)

    asked on June 20, 2010
  73. Science

    In the experiment water clock : what changes (independent variable) , how does it responds to the changes made(dependent variable), and what is being controlled (controlled variable). Pleas I really need this by today. And also my question for science fair

    asked on January 19, 2015
  74. chemistry

    you heat 4.31 grams of a nickel 2 phosphate hydrate. You heat to a constant mass of 3.09 grams. What is the formula of this hydrate?

    asked on April 11, 2013
  75. Early childhood literacy

    "I eated it all up!"said Jimmy. Mrs. Newman, his teacher, should say. A. "Jimmy,say that again, but instead of saying "I eated it all up!"I ate it all up!' B. "What did you eat up?"

    asked on October 23, 2011
  76. Social Studies

    Who is most of the work on legislation in congress is done by?

    asked on July 28, 2011
  77. Pre-Calculus

    Find the period and, where appropriate, the amplitude of the following function: y=2sin(x)

    asked on April 6, 2008
  78. history

    to what extent would it be accurate to say that the new england ,middke and southern colonies had merged to create a single american society by the oubreak of the revolution? In my opinion, from everything I've read, it would not be accurate. There were

    asked on July 13, 2007
  79. buisness

    If you find a job posting for a community college that clearly states that the job will close on 08/15/2017, what does this mean? a. Someone will be hired by that date. b. The employer is only hiring until that date. c. After that date, the employer will

    asked on February 3, 2017
  80. Calculus

    I would like to know if my answers are correct: Disclaimer: We are allowed to keep our answers in formula form 1. Use the washer method to find the volume of the solid that is generated by rotating the plane region bounded by y=x^2 and y = 2-x^2 about the

    asked on January 16, 2017
  81. Goverment

    1. Read each situation. Write whether a bill of attainder, an ex post facto law, or a writ of habeas corpus woul prevent the situation from happening. A. ______________ shortly after video cameras were invented, a man evident aped a rock concrete. Years

    asked on March 2, 2015
  82. Derivatives

    Find the derivatives of: 1. H(x)= sin2xcos2x The answer given is 2cos4x. My question is, how in the world did they get that!? Shouldn't the answer at least contain the sin function, either negative or positive seeing as it's the derivative of cos? Also,

    asked on October 3, 2013
  83. Mirobiology

    give three situations where the negative staining procedure is used.

    asked on February 6, 2012
  84. books

    discuss the view that oedipus at colonus embodies a profound philosophy about the meaning of life and the mystery of death

    asked on September 12, 2011
  85. World History

    What was the fourteen points?

    asked on March 14, 2011
  86. Calculus

    simplify 4xy^-2/((12x^-1/3)(y^-5))

    asked on August 22, 2010
  87. Physics

    Block B in the figure weighs 739 N. The coefficient of static friction between block and table is 0.34; angle θ is 26°; assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary.

    asked on March 1, 2016
  88. Math

    A roll of paper towels is 10 inches high and 2.5 inches in diameter. How many full squares inches of paper towel can fit on the roll in 15 rotation? * all I need is a formula of this question. Do I use lateral surface area formula or total surface area

    asked on February 20, 2015
  89. Science

    Which statement is true of an organ system? A. It supports all part of the organism. B. it is not necessary for the survival of the organism. C. One organ system can take over for another organ system. D. It has no connection with other organ system in the

    asked on February 17, 2015
  90. english

    instead of hiring a lawyer, the defendant will__________ to plead her own case in court.

    asked on October 30, 2012
  91. math

    The relationship described below can be modeled using an equation. Identify the variables and write an equation to solve the questions below. Number of Credits Fees 3 2000 6 2600 9 3200 12 3800 15 4400 a) Write an equation to calculate the fees F when the

    asked on September 1, 2012
  92. Maths

    in a school,7/10 of the pupils like mathematics. half of those who like mathematics are girls.if there are 240 pupils in the school,how many girls like mathematics

    asked on April 25, 2012
  93. algebra

    true or false? A Aquarium which is 4ft x 5ft x 3ft high can hold 800 gallons of water. (assume that one cubic foot of space holds 7.5 gallons of water)

    asked on February 2, 2010
  94. Calculus

    Find the constant term in the expansion of [x + (3/x squared)]^9 Find the coefficient of (x)^4(y)^9 in the expansion of (x + (2)(y)^3)^7

    asked on January 21, 2008
  95. calculus

    Find the sum of the series: 10 + 14 + 18 + 22 +...+138 and 6-12+24-48+96-...+1536

    asked on January 21, 2008
  96. Physics

    I am taking an online course in physics and I need to write a short paper on Analog and digital information. Below are the questions that guide me through the paper. I am having a hard time finding a website that can explain this to me. There is no text

    asked on February 15, 2018
  97. Math

    Let A denote the portion of the curve y = sqrt(x) that is between the lines x = 1 and x = 4. 1) Set up, don't evaluate, 2 integrals, one in the variable x and one in the variable y, for the length of A. My Work: for x: integral[4,1] sqrt(1+(dy/dx)^2) dy/dx

    asked on January 25, 2017
  98. Calculus

    Can you please check to see if these answers are correct? I have provided my work as well! That you! This is much appreciated!! 1. What is the volume of the solid that is generated by revolving the region bounded by the curves x = 3y^2-2 and x = y^2 and y

    asked on January 23, 2017
  99. Science

    Q1. Why is the shape of the nerves important in the nervous system? Q2. Which structure is more complex, a tissue or an organ? How do you know?

    asked on February 17, 2015
  100. Math

    George is making a permanent for his favorite baseball team. He wants the short edge to be 14 inches and the height in the middle of the right triangle to be 24 inches. What is the length of diagonal side AB?

    asked on January 24, 2015


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