Josh

Most popular questions and responses by Josh
  1. Help me with this math ms sue.

    Multiple Choice 1. Calculate the slant height for the given cone. Round to the nearest tenth. cone (1 point) 10.2 cm 11.4 cm 9.8 cm 12.0 cm 2. Calculate the slant height for the given cone. Round to the nearest tenth. cone (1 point) 11.2 cm 12.5 cm 14.8 cm

    asked on February 27, 2014
  2. science help plzzz

    Multiple Choice 1. Which of the following images shows a living organism interacting with a biotic factor in its environment? (1 point) bird drinking water koala eating leaves plant in the Earth whale in the ocean 2. Which of the following shows the

    asked on November 7, 2013
  3. please help me!! with this science!!!!!

    Multiple Choice 1. Which sphere of the Earth system contains all living organisms? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following statements best describes the geosphere? (1 point) the sphere that consists of solid rock

    asked on January 7, 2014
  4. science help plzzz

    1. Which of the following statements best defines tides? (1 point) when waves get bigger because of an approaching storm the rise and fall of ocean water that occurs about every 12.5 hours the rise of ocean water that occurs 12 times a day a giant wave

    asked on January 17, 2014
  5. please help me!! with this science!!!!!

    Multiple Choice: 1. If a kestrel eats a mouse that eats grass, the kestrel is a (1 point) producer. second-level consumer. first-level consumer. decomposer. 2. Which of the following best explains why a species of lizard is able to live in the desert but

    asked on December 11, 2013
  6. Science help ms sue.

    Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements

    asked on February 25, 2014
  7. science help plzzz

    Multiple Choice 1. Which of Earth's spheres contains mountains, valleys, and other landscapes? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following are examples of destructive forces? (1 point) ice wind both ice and wind neither

    asked on January 22, 2014
  8. Social Studies

    How can a free press hold the government accountable? a.hosting opinion panels** b.offering prior restraint c.accessing classified info d.summarizing government actions

    asked on May 31, 2017
  9. math help plzzzz!!!!

    Multiple Choice 1. What is 0.32 written as a fraction in simplest form? (1 point) thirty-two over one hundred eight over twenty-five one hundred over thirty-two sixteen over twenty-five 2. If Fran’s fudge recipe calls for two and one-half cups of sugar

    asked on October 30, 2013
  10. science help plzzz

    Multiple Choice 1. At the chromosomal level, what is the difference between human males and human females? (1 point) All males have a Y chromosome, and females do not. All males have an X chromosome, and females do not. All males have 47 chromosomes, and

    asked on October 29, 2013
  11. Chemistry(difficult)

    A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 billion years old by uranium/lead dating. Assuming that the rock did not contain any lead when it was formed, what is the current mass of 206Pb per 1.185 g of 238U in the rock? The

    asked on May 3, 2015
  12. science help!!!

    1. Seahorses change color and swim together in predetermined ways before mating. These behaviors are called (1 point) asexual reproduction. sexual reproduction. courtship rituals. budding. 2. A male peacock displays his colorful tail feathers in order to

    asked on October 18, 2013
  13. math

    Is the relationship between the variables in the table direct variation, inverse variation, both, or neither? If it is a direct or inverse variation, write a function to follow it. X:2 5 20 40 Y:40 20 5 2 ANSWERS AVAILABLE TO CHOSE: A) NEITHER B) INVERSE

    asked on May 17, 2016
  14. PLZZ HELP ME WITH THIS MATH MS SUE.

    4. For the pair of similar solids, find the value of the variable. cylinders (1 point) 3 cm 18 cm 16 cm** 2 cm 5. For the pair of similar solids, find the value of the variable. pyramids (1 point) 12 mm 48 mm** 20 mm 3 mm ARE THESE CORRECT?

    asked on March 12, 2014
  15. Biology

    In chemistry PO4 is non polar, but in biology the phosphate functional group PO4 is polar? How so?

    asked on September 6, 2019
  16. math

    When baking a cake, you have a choice of the following pans: a round cake pan that is 2 inches deep and has a 7 inch diameter a 6 inch × 9 inch rectangular cake pan that is 2 inches deep a. Which of these pans has the larger volume? Justify your answer.

    asked on May 27, 2017
  17. Math help ms sue.

    Multiple Choice 1. Write the ratio in the simplest form. 45:15 (1 point) 9:3 3:1 1:3 4:1 2. Solve the following proportion. r over five equals nine over twenty-one (1 point) r = 2.14 r = 9 r = 11.66 r = 37.8 3. Sarah’s mother has a miniature village

    asked on December 16, 2013
  18. Help me with this science.

    Multiple Choice: 1. Which organisms are capable of converting gaseous nitrogen in the air into a form that other living organisms can use? (1 point) nitrogen-fixing bacteria denitrifying bacteria decomposers producers 2. Which step in the nitrogen cycle is

    asked on December 10, 2013
  19. math

    Bicycles in the late 1800s looked very different than they do today. There's a larger tire with a diameter of 60 in and a smaller tire with a radius of 9 in. How many rotations does each tire make after traveling 600 feet? Round your answers to the nearest

    asked on May 7, 2016
  20. Physics

    Which statements about traveling waves are TRUE? Choose all that apply. a) A traveling wave transfers energy from one point to another. b) A speaker that beams its sound forward into a small area produces a louder sound. c) The rate at which a wave

    asked on February 22, 2014
  21. College Physics

    Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in a glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving with a speed vi. After the collision, the orange disk moves along a

    asked on May 18, 2011
  22. Math help ms sue.

    1. What is 57% of 11? (1 point) 11 = 0.57 • n; 19.3 n = 57 • 11; 627 n = 0.57 • 11; 6.27 11 = 57 • n; 0.19 2. 224 is 25% of what number? (1 point) 224 • 0.25 = w; 560 224 = 0.25 • w; 896 224 • 0.25 = w; 56 224 = 0.25 • w; 90 3. Explain how

    asked on January 12, 2014
  23. chemistry

    copper compounds such as copper (II) sulfate are toxic. before disposal, these compounds must be treated to reduce their toxicity. describe how to use steel wool to remove the Cu 2+ ions from an aqueous solution of copper (II) sulfate

    asked on March 7, 2013
  24. geometry

    The Polygon Angle-Sum Theorem states the following: The sum of the measures of the angles of an n-gon is ____. (1 point) (n – 1)180o (n – 2)180o 9. What is the measure of one angle in a regular 16-gon? (1 point) 2,520o 202.5o 157.5o 78.75o 10. The

    asked on December 31, 2012
  25. science help plzzz

    1. Over time, a particular plant has developed a longer stamen. Which of the following is a possible advantage of having a longer stamen? (1 point) A longer stamen could ensure that an insect brushes against an anther and picks up pollen. A longer stamen

    asked on October 17, 2013
  26. Can someone check these answer for me?

    Multiple Choice 1. Over time, a particular plant has developed a longer stamen. Which of the following is a possible advantage of having a longer stamen? (1 point) A longer stamen could ensure that an insect brushes against an anther and picks up pollen.**

    asked on October 17, 2013
  27. Math

    Christopher mixes the letters s, e, l, e, c, t, e, and d thoroughly. without looking, allen draws one letter. expressed as a fraction, decimal, and percentage, what is the probability that allen will not select a consonant? A. 3/8 , 0.375, 37.5% B. 3/5 ,

    asked on May 21, 2018
  28. english 11

    4. Which of the following statements about Anne Bradstreet is NOT true? (1 point)Anne Bradstreet was never married. Anne Bradstreet was the first published poet in America. Anne Bradstreet was born and educated in England. Anne Bradstreet favored poems

    asked on August 23, 2012
  29. english

    which set of words, below could be used to describe the disperal of seeds to a new region 1.wings, legs, migration 2.invasive, exotic, continental drift 3.biogeography, adaptation, survival, 4.wind, water, animal feces and if you know the rest can you help

    asked on February 24, 2017
  30. Physics

    An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 m in diameter. Find the x component of this runner's average velocity between points A and B. (answer is 3.44 m/s) Find the y component of this runner's average

    asked on September 13, 2006
  31. Chemistry

    Determine the average rate of change of B from t=0s to t=352s. A to 2B Time Concentration of A (M) 0 0.670 176 0.385 352 0.100

    asked on July 16, 2011
  32. chemistry

    A certain reaction has a delta H= -75 kJ and an activation energy of 40 kJ. A catalyst is found that lowers the Activation energy of the forward reaction by 15 kJ. What is the activation energy of the reverse reaction in the presence of this same catalyst?

    asked on March 22, 2010
  33. Chemistry

    Suppose that a 10-mL sample of a solution is to be tested for Cl- ion by addition of 1 drop (0.2mL ) of 0.15 M AgNO3 . What is the minimum number of grams of Cl- that must be present in order for AgCl(s) to form?

    asked on November 20, 2010
  34. CHEMISTRY PLEASE HELP

    a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the

    asked on October 24, 2011
  35. Chemistry

    1. For the reaction 2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases? A. Shift to the right B. Shift to the left C. Doubles D. Does nothing E. Halves 2. if an equilibrium reaction shifts to the right when the

    asked on October 16, 2012
  36. Physics

    Three boxes are lined up so that they are touching each other as shown in the figure below. Box A has a mass of 30.0 kg, box B has a mass of 45.0 kg, and box C has a mass of 75.0 kg. An external force (F) pushes on box A toward the right, and the force

    asked on November 20, 2016
  37. physics

    A sled (mass 310 kg) is pulled across a stone floor with a coefficient of kinetic friction of 0.9. The rope that is used to pull it is at an angle alpha of 55 degrees with the horizontal. How hard (i.e., with what magnitude force) do you need to pull to

    asked on February 22, 2014
  38. Help me with math

    Find the variance for the given data. Round your answer to two decimal places. 5.0, 8.0, 4.9, 6.8, and 2.8

    asked on July 6, 2017
  39. Can someone please help me with this history!!!!!!

    Multiple Choice 1. Which of the following statements describes the most common experience of Native Americans after encountering Europeans for the first time? (1 point) Native Americans thought the settlers had nothing to offer them in trade or knowledge.

    asked on November 3, 2013
  40. Math

    Name the population and the sample in these two 1) The number of roadrunners born within a 50-mile radius of lubbock 2) The cars traveling at a 75 kilometers per hour between beaumont and lufkin

    asked on March 16, 2017
  41. biology

    skin cells seem to fit together like pieces of a jigsaw puzzle how is this arrangement of cells helpful to an organism?

    asked on November 8, 2009
  42. social studies

    Which set correctly identifies the features shown on the map 1. A Andes Mountains. B Pamps 2. B Atacama Desert C Pamps 3.A Atacama Desert D Andes Mountains 4. C Andes Mountains D Pamps i think it is 1 im not sure

    asked on April 12, 2017
  43. Physics

    A river flows due south with a speed of 2.00 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.20 m/s due east. The river is 800 m wide. What is the magnitude of his velocity relative to the earth? got it....4.65 m/s

    asked on September 16, 2006
  44. math help ASAP

    Rico made a function table to illustrate the rate he charges for mowing lawns. Complete the table. Then write a function rule for the function. (1 point) ( ) = blank Hours (h) 1 2 3 4 5 Earnings (E) ( ) ( ) ( ) $22.00 $27.50 a. $5.75, $11.50, $17.25; E =

    asked on March 9, 2017
  45. Chemistry Help Please

    1)how would the accuracy of your determined keq change if all your volume measurements were made with graduated cylinders rather than pipets ? 2) if all of the SCN^- was not converted completely to FeNCS^2+ when the calibration curve was prepared would

    asked on March 13, 2014
  46. Physics

    Two uniform solid spheres have the same mass of 3 kg, but one has a radius of 0.25 m while the other has a radius of 0.8 m. Each can rotate about an axis through its center. (a) What is the magnitude τ of the torque required to bring the smaller sphere

    asked on January 11, 2014
  47. College Physics

    A 7.00 g bullet, when fired from a gun into a 1.00 kg block of wood held in a vice, penetrates the block to a depth of 8.00 cm. If the block had instead been at rest on a frictionless horizontal surface, to what depth would the bullet have penetrated?

    asked on May 18, 2011
  48. Common core standard. math

    Consuelos living room is in the shape of a rectangle and has an area of 360 square feet. The width of the living room is 5/6 it's length. What is the length of living room?

    asked on March 8, 2016
  49. physics

    Two identical loudspeakers are 2 m apart. A person stands 4.6 m from one speaker and 3.4 m from the other. What is the lowest frequency at which destructive interference will occur at this point?

    asked on July 4, 2010
  50. Physics

    "The energy that is transferred as heat to or from the object with the larger heat capacity must be greater than the energy that is transferred as heat to or from the object with the smaller heat capacity." Can someone explain why this concept is true or

    asked on June 21, 2011
  51. physics

    A car has a mass of 1500 kg. If the driver applies the brakes while on a gravel road, the maximum friction force that the tires can provide without skidding is about 7000 N. If the car is moving at 18 m/s, what is the shortest distance in which the car can

    asked on September 22, 2014
  52. computer science

    a bank charges $10 per month plus the following check fees for a commercial checking account: $.10 each for fewer than 20 checks $.08 each for 20-39 checks $.06 each for 40-59 checks &.04 each for 60 or more checks write a program that asks for the number

    asked on March 10, 2010
  53. Chemistry

    x+y=9.0 0.50x+0.20y=3.90 What is the value of x and y?

    asked on July 9, 2011
  54. Calculus

    find the exact value of sin 11pi/12 using the sum or difference formula.

    asked on July 19, 2011
  55. physics

    In a city grid, each block on the east-west streets is 100 meters long. Each block on the north-south streets is 20 meters long. A walker walks 4 blocks west and then 4 blocks south. How much father did the walker travel than the actual distance between

    asked on May 17, 2013
  56. Chemistry

    1.The density of solid Fe is 7.87 g/cm3. What volume per atom of Fe? 2.As a solid Fe adopts a body centered cubic unit cell. What is the volume of a unit cell of this metal? 3.What is the edge length of a unit cell of Fe?

    asked on July 9, 2011
  57. Chemistry

    Order in the increasing value of their polarity? HF NH3 H2O CO2 here i used the scale and got their numbers. HF>H2O>CO2>NH3 am i correct?

    asked on August 17, 2017
  58. 3rd grade shurley english

    what does s, f,scs, scv mean when indentifying(labeling) sentences thanks

    asked on October 26, 2010
  59. Physics Please help3

    A point charge with charge q1 = 3.10μC is held stationary at the origin. A second point charge with charge q2 = -4.60μC moves from the point ( 0.160m , 0) to the point ( 0.270m , 0.255m ). How much work W is done by the electric force on the moving point

    asked on May 21, 2014
  60. Chemistry

    Calculate the pH of a 0.250M solution of Sulfurous acid, H2SO3.

    asked on February 18, 2011
  61. 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

    asked on February 3, 2009
  62. Physics

    A proton is at the origin and an electron is at the point x = 0.41 nm, y = 0.36 nm. Find the electric force on the proton. I got 7.529 *10^-11 but it wants the answer for fx and fy how do i get that?

    asked on August 6, 2009
  63. statistics

    The test scores for 9 students on the Unit 1 test were 35, 25, 50, 95, 80, 60, 45, 100, and 90. What is the value of the second quartile for this data set?

    asked on February 26, 2011
  64. Physics

    Each of 108 identical blocks sitting on a frictionless surface is connected to the next block by a massless string. The first block is pulled with a force of 108N. What is the tension in the string connecting block 108 to block 107?

    asked on October 10, 2011
  65. Math

    . Vern sold his 1964 Ford Mustang for $55,000 and wants to invest the money to earn him 5.8% interest per year. He will put some of the money into Fund A that earns 3% per year and the rest in Fund B that earns 10% per year. How much should he invest into

    asked on March 4, 2019
  66. maths

    Rob is twice Joshua’s age. Nick is 5 years older than Joshua. The sum of all their ages is 45. How old is Nick?

    asked on September 7, 2018
  67. Physics

    How to solve? 2. A 70.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 10.0 m) and spun at a constant angular velocity of 16.3 rpm. Answer the following: a. What is the angular velocity of

    asked on May 20, 2014
  68. history help plzzzzzz

    1. What was the Trail of Tears? (1 point) the nickname given to Manifest Destiny by many Native Americans the battlefield where thousands of Cherokees were killed defending their home territory the path walked by Native Americans as they were forced to

    asked on January 29, 2014
  69. Physics

    Hey, it's me again, Can someone help me with this question? A water balloon is dropped from the top of a building. Assume the balloon does not break when it strikes the ground. If the water balloon falls a distance of 21m, what is the maximum temperature

    asked on June 28, 2011
  70. Algebra

    Estimate the square root. Round to the nearest integer. √242 What I got was 58,584 is this correct?

    asked on October 9, 2013
  71. Math Question

    What is the 50th term of the sequence that begins -6,0,6,12? 292 288 286 290

    asked on May 19, 2014
  72. Calculus

    If an open box has a square base and a volume of 106 in.3 and is constructed from a tin sheet, find the dimensions of the box, assuming a minimum amount of material is used in its construction. (Round your answers to two decimal places.) height in length

    asked on April 4, 2011
  73. 10th grade

    the circle is circumscribed by the pentagon as shown (not drawn to scale). If QZ=10, YX=9, XW=9, UW=17, and SU=10, find the perimeter of the pentagon.

    asked on May 20, 2010
  74. algebra

    3x + 4y = -14 3x − 10y = 14

    asked on June 12, 2019
  75. Chemistry! HELP;

    An atom of potassium (K) has 19 protons: 18 electrons in its inner electron energy levels and 1 electron in its outer energy level. What is the easiest way for this atom to get a filled outer energy level? What is formed?

    asked on November 6, 2011
  76. Science

    Some herbicides, such as 2, 4-D are believed to make plant cells divide more rapidly than normal. Why would this kill plants? Why might this be dangerous to humans if it had the same effect on human cells?

    asked on April 15, 2013
  77. Physics

    A cheetah can maintain its maximum speed of 29.5 m/s for only 35.3 seconds. What is the maximum distance a gazelle running at 26.2 m/s must be ahead of the cheetah to have a chance of escaping?

    asked on September 25, 2016
  78. Chemistry

    When 1.187g of a metallic oxide is reduced with excess hydrogen, 1.054g of the metal is produced. How do you determine what the metal oxide is?

    asked on May 18, 2011
  79. math

    the edges of 3 cubes are consecutive odd intergers. if the cubes aer stacked on a desk as shown, the total exposed surface area is 381. find the lenths of the sides of the cubes thanks!!

    asked on March 21, 2011
  80. Applied Calculus

    In August 2013, Ally Bank was offering 0.16% interest on its Online Savings Account, with interest reinvested daily. Assuming that this rate of return continued for 8 years, how much was would a deposit of $4000 in August 2013 be worth in August 2021?

    asked on September 2, 2019
  81. Chemistry

    How fast should a 58.1g tennis ball travel to have a de Broglie wavelength that is equal to that of a photon of green light (5.40 X 10^3 angstroms)?

    asked on April 5, 2011
  82. precalculus

    A population doubles every 30 years. Assuming exponential growth find the following: annual growth rate: % continuous growth rate: %

    asked on March 23, 2011
  83. Chemistry

    at 298 k, the Henry's law constant for oxygen is 0.00130 M/atm. Air is 21.0% oxygen. at 298 k, what is the solubility of oxygen in water exposed to air at 1.00 atm?

    asked on July 12, 2011
  84. Math

    You order twelve burritos to go from a Mexican restaurant, five with hot peppers and seven without. However, the restaurant forgot to label them. You pick three burritos at random. Find the probability of the events (as a reduced fraction and as a percent

    asked on June 6, 2016
  85. Calculus

    The shaded regions R1 and R2, shown below, are enclosed by the graphs of f(x)= −x^2 and g(x)= −2^x. (gyazo.com/7bcf02392ff69e2a1280588308342e8e) Find the x- and y-coordinates of the three points of intersection of the graphs of f and g

    asked on April 24, 2019
  86. Help me with this math ms sue.

    1. Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for π and round to the nearest tenth. (1 point) 439.6 ft2 324.5 ft2 571.5 ft2 285.7 ft2 2. Find the surface area of a square pyramid with a base length of 24

    asked on March 6, 2014
  87. Can someone check these answers for me?

    1. Seahorses change color and swim together in predetermined ways before mating. These behaviors are called (1 point) asexual reproduction.** sexual reproduction. courtship rituals. budding. 2. A male peacock displays his colorful tail feathers in order to

    asked on October 18, 2013
  88. Math

    The figure below shows a shaded circular region inside a larger circle: A shaded circle is shown inside another larger circle. The radius of the smaller circle is labeled as r and the radius of the larger circle is labeled as R. On the right side of the

    asked on April 25, 2018
  89. math

    1.A wind turbine has blades 50m in diameter and an overall height of 125m. If it has four blades instead of three, create four equations modelling the height of a point on the tip for each of the four blades. 2.Create a sine equation for the height of a

    asked on April 25, 2016
  90. physics

    A farsighted man has a near point of 50 cm. What power lens should he use as a magnifier to see clearly at a distance of 15cm without wearing his glasses?

    asked on December 9, 2009
  91. organic chem

    7. An unknown compound, C8H14, is optically active. Hydrogenation of the unknown yields 4-methylheptane. Ozonolysis of the unknown yields ethanol and 2- methylpropandial. Suggest a structure for the unknown consistent with the above date. please help

    asked on October 11, 2010
  92. Math (Please help)

    Macario is making 12 pounds of nut mixture with macadamia nuts and almonds. macadamia nuts cost $9 per pound and almonds cost $5.25 per pound. how many pounds of macadamia nuts and how many pounds of almonds should macario use for the mixture to cost $6.50

    asked on March 3, 2019
  93. Math

    The box office sold 360 tickets to a concert at the college. The total receipts were $4,170. General admission tickets cost $15 and student tickets cost $10. How many of each kind of ticket was sold? This is what I was doing x+y=360 x=360-y

    asked on March 4, 2019
  94. physiscs

    a 75w and 50 w incandescent light bulbs are designed fot use with the same voltage. what is the ratio of the resistance of the 75- w bulb to the resistance of the 50 w bulb?

    asked on March 8, 2012
  95. Algebra

    Julie went to the post office and bought both $0.41 stamps and $0.26 postcards. She spent $51.40. The number of stamps was 20 more than twice the number of postcards. How many of each did she buy? I just want to know how to set it up.

    asked on March 3, 2019
  96. Physics

    An 82.9 N box of clothes is pulled 28.2 m up a 20.7◦ ramp by a force of 117 N that points along the ramp. The acceleration of gravity is 9.81 m/s^2. If the coefficient of kinetic friction between the box and ramp is 0.29, calculate the change in the

    asked on December 10, 2014
  97. Chemistry I

    In determining the heat capacity of a calorimeter, 50ml of water at 56*C is added to 50ml of water at 23*C. After about five minutes of mixing, the final temperature of the solution inside the calorimeter reached 37*C. Calculate the heat capacity of the

    asked on October 22, 2012
  98. Physics

    A 16kg child on roller skates rolls 2m down an incline at 20 degrees with the horizontal. With no friction, what is the total kinetic energy of the child at the bottom of the incline?

    asked on December 13, 2010
  99. trig

    If sin(θ) = 8/17 and θ terminates in QI, find cos(θ)

    asked on January 26, 2012
  100. physics

    A person with mass 70 kg is climbing a ladder (length 6m, mass 20 kg) that leans against a smooth wall (no friction). A frictional force fs between the ladder and the floor keeps it from slipping. The angle between the ladder and the wall is 30 degrees.

    asked on July 7, 2010

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