1. Physics

    A raft is made of 15 logs lashed together. Each is 30.0 cm in diameter and has a length of 7.00 m. How many people (whole number) can the raft hold before they start getting their feet wet, assuming the average person has a mass of 66.0 kg? Do not neglect

    asked by Kayla on November 9, 2016
  2. physics

    Can a person, in principle, travel from Earth to the galactic center (which is about 2.3e4 lightyears distant) in a normal lifetime? Explain, using either time-dilation or length contraction arguments. If they want to make the trip in 24 y what distance

    asked by Andy on April 15, 2010
  3. solid mechanics

    A piece of material 15 cm long by 2.5 cm square is in compression under a load 100 kN.If the modulus of elasticity of the material is 105 GPa and Poisson's ratio is 0.25, find the alterntion in length if all lateral strain is prevented by the application

    asked by ripon on August 1, 2013
  4. solid mechanics

    A piece of material 15 cm long by 2.5 cm square is in compression under a load 100kN. If the modulus of elasticity of the material is 105 GPa and Possion's ratio is 0.25, find the alternation in length if all lateral strain is prevented by the application

    asked by ripon on July 31, 2013
  5. physic

    Two cubes with sides of length 121.0 mm fit in a space that is 243.3 mm wide, as shown in the figure. One cube is made of aluminum, and the other is made of brass. What temperature increase is required for the cubes to completely fill the gap? Give answer

    asked by Djef on April 8, 2011
  6. math

    if you have two rectangles one is 3ft wide and 9ft long and the other is 1 ft wide and 3ft long what is the scale factor form small rectangle to large rectangle? what is the scale from large to small? would it be 1/3 and 3/1?

    asked by jill on May 16, 2011
  7. Physics please help!!

    A school yard teeter totter with a total length of 5.46 m and a mass of 35.9 kg is pivoted at its center. A 17.7 kg child sits on one end of the teeter totter. Where should a parent push with a force of 272 N in order to hold the teeter totter level?

    asked by Megan on March 4, 2011
  8. physics

    The length of a bicycle pedal arm is 0.152 m, and a downward force of 146 N is applied to the pedal by the rider's foot. What is the magnitude of the torque about the pedal arm's pivot point when the arm makes the following angles with the vertical? (a)

    asked by wolfpak on March 19, 2007
  9. Physics

    1. A model of a helicopter rotor has four blades, each 2.50 m in length from the central shaft to the blade tip and is rotated in a wind tunnel at 1800 rev/min, a. what is the linear speed of the blade tip in m/s? b. what is the radial acceleration of

    asked by Ryan on February 15, 2012
  10. Physics

    The length of a bicycle pedal arm is 0.152 m, and a downward force of 146 N is applied to the pedal by the rider's foot. What is the magnitude of the torque about the pedal arm's pivot point when the arm makes the following angles with the vertical? (a)

    asked by wolfpak on March 18, 2007
  11. probation and parole

    Classification in correctional institutions is used primarily to: A. determine if the inmate needs psychiatric attention. B. determine if the inmate is a security risk. C. determine the rehabilitative needs of an inmate. D. provide for vocational

    asked by Sonia Kapoor on November 20, 2014
  12. physics

    The convex lens of a copy machine has a focal length of 22.0 cm. A letter to be copied is placed 37.0 cm from the lens. (a) How far from the lens is the copy paper? (b) How much larger will the copy be?

    asked by A on May 14, 2013
  13. Math

    Aleka has a box for keepsakes that has a volume of 576 cubic inches. The length of the box is 12 inches and the width is 8 inches. What is the height of the box?

    asked by Jenny on April 20, 2017
  14. Pre-algebra

    Transform the formula. The area of a triangle A can be found with the formula A=1/2bh where b is the length of the base of the triangle and h is the height of the triangle. Solve the formula for h.

    asked by Jacob on January 20, 2011
  15. gas laws chemistry

    A neon sign is made of glass tubing with an inside diameter of 12.7 mm and length of 16.0 m. If the sign contains neon at a pressure of 7.56 torr at 33°C, how much neon is in the sign?

    asked by harley on March 17, 2012
  16. Menus ration

    a perimeter of a trapezium is 55cm and its non parallel sides are 8 cm and 7cm the difference between the length of parallel sides is 5 cm. find the lengths of the parallel sides

    asked by Athirika on January 27, 2013
  17. math

    The perimeter of a rectangular window is 634 inches. If the length of the window is 205 inches, what is the width of the window? Is the answer 112 inches?

    asked by Anonymous on February 24, 2015
  18. Menusration

    a perimeter of a trapezium is 55cm and its non parallel sides are 8 cm and 7cm the difference between the length of parallel sides is 5 cm. find the lengths of the parallel sides

    asked by Athirika on January 27, 2013
  19. Math

    The perimeter of a rectangular soccer field is 20/3 meters. If the width of the soccer field is the reciprocal of the length, find the dimensions of the soccer field.

    asked by Bianca on September 22, 2012
  20. Chemistry

    a) Determine how many molesof I3 are produced by 1 mole of Cu(IO3)2. b)Determine the stoichiometric ratio between iodate and thiosulfate. c)Determine the molar solubity expression for Cu(IO3)2 For C) I got ksp=[Cu2+][IO3-]^2 Is this correct?

    asked by Please Help on July 15, 2015
  21. geometry

    DIAGRAMS ARE HERE: type filedropper . c o m /diagrams (in .zip file) 1. which solid has two bases that are triangles and three lateral surfaces that are rectangles a. triangular pyramid b. rectangular prism c. triangular prism *** d. rectangular pyramid 2.

    asked by anon6666 on May 23, 2016
  22. physics

    a ball of mass 2kg is suspended by a string of length 2m.it then from "b" and kicks an identical ball at position "a".if frictional force is neglected,through what distance ball "a"is moved horizontal if ball"b"becomes at rest after it kicks ball"a"?take

    asked by Naod Demise on March 27, 2018
  23. algebra

    a 38 inch piece of steels is cut into three pieces so that the second piece is twice as long as the first piece, and the third piece is three inches more than four times the length of the first piece. find the lengths of pieces.

    asked by maria on April 4, 2016
  24. Algebra

    A triangle has a perimeter of 47 inches. The medium side is 5 more than the short side, and the longest side is 4 times the length of the shortest side. Find the shortest side.

    asked by Keonn'a Tarvin on August 29, 2018
  25. Geometry

    A trapezoid has a perimeter of 14 feet. What will the perimeter be if each side length is increased by a factor 7? A. 21 feet B. 98 feet C. 196 feet D. 686 feet This one is def B correct?

    asked by anon on March 2, 2014
  26. math

    Moulding comes in four different lengths. Jesse needs to cut four pieces of moulding, each 3 and 7 tenths feet long, from one board. Which length should he buy? 8 feet, 10 feet, 12 feet, or 14 feet?

    asked by alissa on September 18, 2011
  27. PHYSÝCS

    You are walking on a moving walkway in the airport. The length of the walkway is 40.1 m. If your velocity relative to the walkway is 2.41 m/s, and the walkway moves with a velocity of 1.59 m/s, how long will it take you to reach the other end of the

    asked by MARÝA on February 24, 2012
  28. pysics 1

    You are walking on a moving walkway in the airport. The length of the walkway is 40.1 m. If your velocity relative to the walkway is 2.41 m/s, and the walkway moves with a velocity of 1.59 m/s, how long will it take you to reach the other end of the

    asked by jelena pleeease help on February 22, 2012
  29. Algebra

    A triangle has a perimeter of 32 inches. The medium side is 7 more than the short side, and the longest side is 3 times the length of the shortest side. Find the shortest side. 32=s+m+l m=s+7 l=3s 32=s+m+l 32=s+s+7+3s 32=5s+7 -7 -7 25/5s=5s/5s 5=s

    asked by Keonn'a Tarvin on August 29, 2018
  30. 5th GRADE MATH

    Jamie is forming a cylinder out of two circles and a rectangle. The area of each circle is 4 pi. The diameter of each circle is 4 cm. The height of the rectangle is 6 cm. Which shows how Jamie could calculate the surface area of the cylinder? a. 2(4pi)+

    asked by Please Help on January 5, 2010
  31. MITx: 2.01x

    Q2_1: QUIZ 2, PROBLEM #1 The shaft ABC is a solid circular cylinder of constant outer diameter 2R and length 3L. The shaft is fixed between walls at A and C and it is composed of two segments made of different materials. The left third of the shaft (AB) is

    asked by mt on July 26, 2013
  32. Physics Classical Mechanics

    A person of mass m2= 85.0 kg is standing on a rung, one third of the way up a ladder of length d= 3.0 m. The mass of the ladder is m1= 15.0 kg, uniformly distributed. The ladder is initially inclined at an angle θ= 35.0∘ with respect to the horizontal.

    asked by A on November 26, 2013
  33. physics

    ¬Calculate the period of oscillation of a simple pendulum of length 1.8 m, with a bob of mass 2.2 kg. What assumption is made in this calculation? (g = 9.8 m s - 2) If the bob of this pendulum is pulled aside a horizontal distance of 20cm and released,

    asked by Anonymous on May 18, 2013
  34. Physics(Please check)

    A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 404 N walk on the overhanging part of the plank before

    asked by Hannah on June 8, 2012
  35. math inequalities please check

    A landscape designer has to design a rectangular pad of concrete at the centre of a rock garden. The lenght must be less than or equal to twice the width; the perimeter must be less than or equal to 40 m; and the area must be greater than or equal to 60

    asked by Sandi on October 25, 2010
  36. Math

    James uses a measuring wheel to find the length of a cross-country race course he holds the handle and rolls the wheel along the course.The wheel has a radius of 1 foot and it turns 2,000 times from the beginning to the end of the race course, how long is

    asked by Jaiden on March 12, 2013
  37. science

    Calculate the period of oscillation of a simple pendulum of length 1.8 m, with a bob of mass 2.2 kg. What assumption is made in this calculation? (g = 9.8 m s - 2) If the bob of this pendulum is pulled aside a horizontal distance of 20cm and released, what

    asked by Suraj on April 21, 2017
  38. Physics

    A uniform ladder of mass 30kg and length 5m rest against a smooth vertical wall with its lower end on a rough ground. The coefficient of friction is 0.4.the ladder is inclined at 60 degrees to the horizontal. Find how far a man of mass 80kg can climb

    asked by Steven on October 20, 2018
  39. finances

    Calculate the future value of the following: o $5,000 compounded annually at 6% for 5 years o $5,000 compounded semiannually at 6% for 5 years o $5,000 compounded quarterly at 6% for 5 years o $5,000 compounded annually at 6% for 6 year What conclusions

    asked by Rhalaj on November 22, 2010
  40. Math

    math forms for construction are made of cement like the one shown. this one has a hollow cylindrical center. what is the total volume of the form? use 3.14 as an approximation for pi. round answer to nearest tenth. Diameter for cylinder is 0.5 ft Width for

    asked by Ayan on January 26, 2016
  41. Mechanical Behavior of Materials

    Calculate the load that a fibroblast cell applies to buckle a single column in a collagen tissue engineering scaffold, given that the column has a length of 100μm, is circular in cross section, with a diameter of 2μm, and has a Young's modulus of 5MPa.

    asked by zxcv on November 8, 2014
  42. College Physics PLEASE HELP

    A cylindrically shaped piece of collagen is being stretched by a force that increases from 0 to 3.0 x 10^-2 N. The length and radius of the collagen are 2.5 and 0.091 cm. Young's Modulus is 3.1 x 10^6 N/m^2. a.) If the stretching obeys Hooke's Law, what is

    asked by Lori on February 23, 2013
  43. physics

    A uniform ladder of mass 46 kg and 3.0 m in length is leaning against a frictionless vertical wall at an inclination of 60 degrees to the horizontal. A Window cleaner of mass 67.3 kg climbs up the ladder. What coefficient of friction between the ladder and

    asked by Bren on December 3, 2014
  44. Physics

    A man is 6 feet tall and wishes to have a "full length mirror" in his house, meaning a mirror that lets him see himself from top to bottom. He goes to the hardware store to get a piece of flat (plane) mirror that is just barely long enough to work. How

    asked by Jacob on September 3, 2012
  45. Physics

    In a television tube, electrons initially at rest are accelerated by a uniform electric field of magnitude 4.0 105 N/C during the first 5.0 cm of the tube's length; then they move at essentially constant velocity another 45 cm before hitting the screen.

    asked by Anonymous on January 20, 2011
  46. geometry

    A manufacturer wants to package samples of a product in a box with a square base. the package is to have a volume of 100 cubic centimeters. what is the func that will describe the surface area of the box S(x) in ters of the length of a side of the base, X?

    asked by luckybee on June 29, 2012
  47. Physics

    A cylindrically shaped piece of collagen is being stretched by a force that increases from 0 to 3.0 x 10^-2 N. The length and radius of the collagen are 2.5 and 0.091 cm. Young's Modulus is 3.1 x 10^6 N/m^2. a.) If the stretching obeys Hooke's Law, what is

    asked by Lori on February 23, 2013
  48. physics-2

    A tracks extends a distance of 478 km without a curve. Supposed a train with an initial speed of 72 km/h travels along the entire length of straight track with a uniform acceleration. the train reaches the end of the track in 5 h, 39 min. What is the

    asked by NoNo100 on September 16, 2009
  49. physics.

    A steel beam is used in the construction of a skyscraper. By what fraction (change in L)/Lo does the length of the beam increase when the temperature changes from that on a cold winter day (-15 degree F) to that on a summer day (+ 105 degree F)? I got

    asked by Ruby on February 10, 2008
  50. Anatomy

    Graded potentials: arise when ion movement causes a minor change in the resting membrane potential. usually propagate down the length of an axon. occur when voltage-gated channels open. are most often observed in axons. are usually associated with ion

    asked by Shannon on November 9, 2014
  51. maths

    A car dealership fences in a rectangular area behind their building to secure unsold vehicles. One length will be the back wall of the dealership. What is the maximum parking area that can be created if they have 2 km of fencing to use? HELP PLS. show you

    asked by happy on April 19, 2017
  52. physics

    A diver of mass 68.9 kg stands at the end of a diving board of mass 24.5 kg and length L = 3.29 m. The diving board is supported at two locations, labeled A and B on the diagram. A and B are separated by a distance d = 0.74 m. Observe normal sign

    asked by Sydney on January 19, 2011
  53. Trig - Law of sines and cosines

    ABC is an equilateral triangle with side length 4. M is the midpoint of BC, and AM is a diagonal of square ALMN. Find the area of the region common to both ABC and ALMN. I drew the diagram but I don't know how to find the answer? I think it has something

    asked by Sam on November 19, 2013
  54. Math

    a tray with a square base is to be made from a square piece of cardboard by cutting 5 inch squares from each corner and folding up the sides. If the box is to hold a volume 520 cubic inches, find the length of the piece of cardboard that is needed.

    asked by Fairen on August 14, 2016
  55. math

    a tray with a square base is to be made from a square piece of cardboard by cutting 5 inch squares from each corner and folding up the sides. If the box is to hold a volume 520 cubic inches, find the length of the piece of cardboard that is needed.

    asked by Noel on March 11, 2015
  56. physics

    Four long, parallel conductors carry equal currents of I = 9.50 A. The current direction of the current is into the page at points A and B and out of the page at C and D. Calculate the magnitude and direction of the magnetic field at point P, located at

    asked by arthur on November 6, 2013
  57. Physics

    A ball of mass m = 0.2 kg is attached to a (massless) string of length L = 2 m and is undergoing circular motion in the horizontal plane (imagine a wave swinger ride at the amusement park). What should the speed of the mass be for θ to be 39°? What is

    asked by James on June 16, 2012
  58. Physics

    I have a few physics questions that I don't understand. Two are thermal expansion problems and the other is an ideal gas law problem. 1. Two rods, one made of iron and the other of aluminum, have the same initial length at 64.00 deg. C? When the

    asked by Alyssa on February 8, 2016
  59. algebra

    y=2x^2+5x-3 a)determine the x-intercepts b)determine the vertex c)determine the axis of symmetry d)determine the maximum or minimum value, stating whether it is a maximum or a minimum e)determine the range can i get the equations so i can try them myself?

    asked by Shay on January 18, 2007
  60. Algebra 2 URGENT

    Solve the problem. Round the answer to the nearest hundredth. Please Show All Work! A garden is currently 4 meters wide and 7 meters long. If the area of the garden is to be doubled by increasing the width and length by the same number of meters, find the

    asked by Trisan on November 18, 2009
  61. Physics

    A 4.2 × 10^3 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 18.4◦ with the horizontal. An average frictional force of 4.1×10^3 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is

    asked by alice on December 12, 2012
  62. physics

    A tennis ball on a string is being swung in a horizontal circle of radius r. The ball has mass m and the string length l. Which expression gives the magnitude of the tension T in the string in terms only of the speed v of the ball and of m, r, and l?

    asked by Anonymous on November 28, 2009
  63. Math Quiz

    Math Quiz please help fast Write the following ratio in simplest form: 32 min:36 min (1 point) 8:9 8:36 32:9 128:144 2. Marie saved $51. On Wednesday, she spent $8 of her savings. What ratio represents the portion of her total savings that she still has

    asked by Dan on December 12, 2013
  64. physics

    A 150-N ladder leans against a smooth wall, inclined at an angle of 60 degrees above the floor. The centre of gravity of the ladder is at point on the ladder which is one-third the length of the ladder from the bottom. How large a horizontal force must the

    asked by tlolu on October 27, 2014
  65. Physics

    A bar of aluminum (bar A) is in thermal contact with a bar of iron (bar B) of the same length and area. One end of the compound bar is maintained at Th = 75.5°C while the opposite end is at 30.0°C. Find the temperature at the junction when the energy

    asked by Chelsea on November 27, 2010
  66. Physics

    A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tangential velocity, v, of the plane? .

    asked by Alex on January 3, 2013
  67. Math Geometry

    a shipping crate carrying e readers has a length of 19 1/3 feet, a width of 7/23 feet, and a height of 7 5/6 feet. Whaat is the volume of the shipping crate? Show your work. i know V=lwh , but I'm getting the wrong answer! Please help.

    asked by andra on July 9, 2013
  68. algebra

    john is preparing to paper the walls of his room, which has the shape of a rectangular prism. The width is 14 feet, the length is 13 feet, and the height is 8 feet. What is the total surface area of the walls of his room?

    asked by Anonymous on May 7, 2012
  69. Physics Help Please

    A 35-mm camera equipped with a 40-mm focal length lens is used to photograph a tree 17 m tall. If a 32-mm high image of the tree on the CCD sensor is required, how far should the camera lens be from the tree? Show Work Please! Thank you so much!

    asked by Need Help Urgent on May 2, 2015
  70. math

    A rectangular lot has an area of 216.795 square meters and a width of 9.7 meters. Nick calculated the length of the lot to be 2.235 meters. Without solving, is Nick's calculation correct?

    asked by john on February 8, 2012
  71. Physics Help Please

    A 35-mm camera equipped with a 40-mm focal length lens is used to photograph a tree 17 m tall. If a 32-mm high image of the tree on the CCD sensor is required, how far should the camera lens be from the tree? Show Work Please! Thank you so much!

    asked by Need Help Urgent on May 3, 2015
  72. Math

    Maria had a square piece of paper. She cut 3 inches off the length and 4 inches off the width. Now the paper has a surface area of 30 in2. Which equation would you use to find the dimensions of the original piece of paper? A. x2 - 7x + 12 = 0 B. x2 - 7x -

    asked by Tyrone on June 3, 2010
  73. Math

    Patrice cuts a piece of board 4 feet long from a board that is x feet long. Find an expression that describes the length in feet of the original after the cut. a. 4 + x b. 4x c. 4 - x d. x - 4 I pick d, is that the correct answer?

    asked by Jay on April 13, 2015
  74. Math

    Adjacent sides of parellogram are 36cm and 27cm in length. If the perpendicular distance btn. the shorter sides in 12cm,what is the distance btn. The longer sides? Gve me ful solutn

    asked by Simran kaur on September 9, 2012
  75. Alg 2

    a rectangular picture frame measures 8 inches by 4 inches. You want to triple the frame's area by adding the same distance, x, to the length and width. Find the value of x and find the new dimensions of the frame. How do you do this?? Please show work

    asked by Anna on July 26, 2011
  76. Math 1314

    A pond is enclosed by a wooden deck that is 3 feet wide. The fence surrounding the deck is 100 feet long. If the pond is rectangular and the length of the pond is to be three times its width, what are its dimensions?

    asked by Ellastine Mouton on April 28, 2014
  77. Math

    A street is 282 m long is covered with snow. City workers are using a snowplow to clear the street. A tire on the snowplow has to turn 47 times in traveling the length of the street. What is the diameter of the tire?

    asked by Josh on December 21, 2012
  78. physics

    a man of 50kg is standing on one end on a boat of length 25m and mass 200 kg .if he starts running and when he reaches the other end ,he has a velocity 2m/s with respect to the boat .the final velocity of the boat is?

    asked by srikala on April 11, 2012
  79. math

    you are mailing a birthday present to a friend.you have abox that has a length of 2 1/2 feet,aheight of 2 feet,and a width of 1 1/2 feet.the present has a volume of 3 cubic fet.what is the volume of th empty space in the box?

    asked by Lakshmi on January 13, 2016
  80. physics

    a person carries a 58kg package of books up a flight of stairs the length along the stairs is 24 meters the vertical height of the stairs is 12 meters how much work is done in raising the package I know the answer is 6800 J but how to get????

    asked by dani on January 6, 2010
  81. physics

    How does the volume of a cube change if the length of one side is increased by one unit, another side is decreased by one unit, and the third side is left unchanged? How does changing the shape of a container affect the volume of the matter?

    asked by Anonymous on March 3, 2012
  82. PHYSICS HELP

    A fibre is fixed at one end it is stretched over a pulley (2.0kg) is the mass. if the mass per unit length of the fibre is 82g/m, calculate the velocity of the wave on the stretched fibre. (please show working)

    asked by Lyoto Machida on June 15, 2012
  83. Math

    An art class is planning to paint a rectangular mural with an area of 60 square feet. It has to be at least 4 feet high but no more than 6 feet high. The length and width have to be whole numbers. List all possible lengths for the mural.

    asked by Tommy on March 16, 2015
  84. College Physics

    College Physics- Inertia? Find the moment of inertia about each of the following axes for a rod that is 0.300 in diameter and 1.60 long, with a mass of 5.00×10−2 . How do you find this ? I know how to find the perpendicular and end . but this? About an

    asked by Herosugar on October 10, 2012
  85. Science, Physics

    Concave mirrors can be used as for shaving or applying make up. The face must be inside the focus. You hold a concave mirror, with a focal length of 40 cm, about 30 cm from your face. Where is your image located? How much bigger than your face is the

    asked by Nora on March 19, 2015
  86. maths

    a horse is tied to a pole by a rope if the horse moves along a circular path keeping the rope tight and describe 176 m when it has traced out 72degree at the pole find the length of the rope

    asked by faizel on January 1, 2013
  87. math

    letitia is making a pizza that needs to cover 36 square inches. give two possible sets of dimensions (length and width) that will give letitia's pizza the desired area. also give the perimeter for each set.

    asked by kayli on March 30, 2015
  88. 5th grade math

    Letitia is making a pizza that needs to cover 36 square inches. give two possible sets of dimensions (length and width) that will give Letitia's pizza the desired area. also give the perimeter for each set.

    asked by kayli on March 30, 2015
  89. Algebra 1

    I also have been having some trouble with this problem. How do I set it up? A rectangular garden is designed so that its length is twice its width. The number of feet in the perimeter of the garden is equal to the number of square feet in its area. What

    asked by Meloney on May 6, 2009
  90. physics

    A wire of length 0.655m carries a current of 21.0A. In the presence of a 0.470-T magnetic field, the wire experiences a force of 5.46N. What is the angle (less than 90degrees) between the wire and the magnetic field? I NEED HELP WITH THIS

    asked by Malisa on April 1, 2008
  91. Physics

    A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tangential velocity, v, of the plane? .

    asked by Alex on January 3, 2013
  92. Math

    The area of a rectangular garden is 38 1/4 square meters. The width of the garden is 4 1/2 meters. Find the length of the garden. I am completely confused on this problem and desperately need step by step instruction on this one.

    asked by Matt on September 8, 2016
  93. physics

    A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational speed of 8.09 rpm. The length of the string is 2.60 m. What is the tension in the string?

    asked by al on January 4, 2013
  94. Geometry

    A small farm field is a square measuring 230 ft on a side. What is the perimeter of the field? If you double the length of each side of the field, what is the new perimeter? For this question, I came up with 920ft, 1840ft. Am I correct?

    asked by aleah on November 22, 2009
  95. alg 1

    the length of a rectangular garden is 8 feet longer than the width. The garden is surrounded by a 4-foot sidewalk. the sidewalk has an area of 320 square feet. find the dimensions of the garden. please help

    asked by darlena on March 18, 2013
  96. Physics check

    1)The velocity of sound in air is 332 m/s. If the unit of length is km and the unit of time is hour, what is the value of velocity? m/s 2)What conclusions can be drawn if a velocity-time graph is a curve? acceleration is not constant.

    asked by Jon on April 14, 2008
  97. Math

    The legs of an ironing board are equal in length and bisect each other at the point where they cross. What generalization about parallelograms ensures that the ironing board will always be parallel to the floor, regardless of the height of the board above

    asked by Anonymous on August 20, 2009
  98. Maths

    A fence that is 4 metres tall runs parallel to a tall building at a distance of 1 metre from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?

    asked by Arjun on May 13, 2012
  99. Pre Calc

    simon goes to the playground to play on the swings. The length of each swing is 1.75m. What is the distance travelled on one swing, from max height to the next max height if the central angle of the swing is 1.4 rad?

    asked by Dano on April 15, 2013
  100. Physics

    A pendulum bob of mass m swinging from the end of a light string of length L = 1.89 m. The bob has speed of v0 = 9.42 m/s when the string makes an angle θ0 = 33.9° with the vertical. What is the speed (in m/s) of the bob when it is at its lowest point?

    asked by Leia on March 19, 2018

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