A supplier of plastic pellets claims that when the plastic is pressed into wafers of uniform thickness, they will have a mean breaking strength of 165 newtons and a standard deviation of 5 newtons. An engineer at the company randomly

6,131 results
  1. math

    Mrs. Herby bought some carrots. She put 2/5 of them on a platter and the rest in a plastic bag. If there were 8 carrots on the platter, how many carrots were there in the plastic bag?

  2. physics

    A student is testing the kinematic equations for uniformly accelerated motion by measuring the time it takes for light-weight plastic balls to fall to the floor from a height of 3 m in the lab. The student predicts the time to fall using g as 9.8 m/s^2 but

  3. Social Studies

    How does the use of plastic to produce bicycle helmets affect other plastic-using industries? It decreases the prices offered by other industries. It increases the demand for products of other industries. It increases the capital available to other

  4. physical science

    Fifteen grams of a liquid plastic are frozen in a physical change that increases the volume. What can be known about the plastic after the change? A) It will weigh more than 15 grams. B) It will have an increased density. C) It will still weigh 15 grams.

  5. MATH

    Plastic plates come in packs of 8, plastic utensils come in packs of 12, and plastic cups come in packs of 20. What are the least numbers of packs you should buy in order to have the same number of plates, utensils, and cups?

  6. physics

    A foam plastic of density of 0.58g/cm^3 is to be used as a life jacket.What volume of the plastic must be used if it is to keep 20percent by volume of an 80kg physics student above water in a lake if the average density of the student is 1.04g/cm^3

  7. chemistry

    The density of a certain type of plastic is 0.89 g/cm3. If a sheet of this plastic is 10.0 m long, 1.0 m wide, and 1.0 cm thick, what is its mass?

  8. physics

    A positively charged glass rod is brought close to a neutral sphere that is supported on a nonconducting plastic stand. Sketch the distribution of charges on the sphere if it is made of: a) Aluminum b) Non-conducting plastic

  9. Algebra 1

    Please help me with this question, Thank You. Mrs. Isabelle is making paper and plastic foam animals for her first-grade class. She is calculating the amount of wasted materials for environmental and financial reasons. Mrs. Isabelle's class is making

  10. Math

    A container needs to package hazardous chemicals in a special plastic rectangular prism that holds 80 cubic feet. Find the whole number dimensions of the container that would use the least amount of plastic. My answer is 5ft, 2ft, and 4ft

  11. statistics

    A manufacturer has a maximum of 240, 360, and 180 kilograms of wood, plastic and steel available. The company produces two products, A and B. Each unit of A requires 1, 3 and 2 kilograms of wood, plastic and steel respectively; each unit of B requires 3, 4

  12. Math

    A rectangular piece of plastic has a perimeter of 28 millimeters. Its area is 40 square millimeters. What are the dimensions of the piece of plastic?

  13. mah

    the edges of a cubical frame are made from plastic straws. how much longer is the total length of the plastic edges of a cube whose edge is 10cm compared to a cube whose edge is 18cm?

  14. statistics

    A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the supplier. If at least

  15. Math

    A factory produces 12000 plastic bottles by using 3 machines 8 hours a day. One machine is out of order now. The owner wants to produce 15000 plastic bottles, How many hours the remaining machines have to work to produce the required bottles?

  16. Pysics

    the average speed of light slows to 0.75 when it refracts through a praticular piece of plastic. a. what change is there in the light's frequecny in the plastic? b. in its wavelength?

  17. Math

    Byron’s house has a roof with dimensions shown. (Roof: 1m Height, 7m Hypotenuses, 12m length) He knows that the average rainfall in his suburb is 30cm per year. Byron would like to install a cylindrical rainwater tank to hold the water that runs off the

  18. physics

    A refrigerator has a coefficient of performance of 2.25, runs on an input of 95 W of electrical power, and keeps its inside compartment at 5 degrees celsius. IF you put a dozen 1.0 L plastic bottles of water at 31 degrees celsius in the refrigerator, how

  19. Math

    Byron’s house has a roof with dimensions shown. (Roof: 1m Height, 7m Hypotenuses, 12m length) He knows that the average rainfall in his suburb is 30cm per year. Byron would like to install a cylindrical rainwater tank to hold the water that runs off the

  20. Science

    Q16: A clear plastic cube with exactly the same index of refraction as water, is placed in a container of water. Would you be able to see the plastic cube in the water if you looked at it from an angle? Please explain why or why not.

  21. physics

    A refrigerator has a coefficient of performance of 2.25, runs on an input of 95 W of electrical power, and keeps its inside compartment at 5 degrees celsius. IF you put a dozen 1.0 L plastic bottles of water at 31 degrees celsius in the refrigerator, how

  22. statistics

    A supplier of plastic pellets claims that when the plastic is pressed into wafers of uniform thickness, they will have a mean breaking strength of 165 newtons and a standard deviation of 5 newtons. An engineer at the company randomly selects wafers from 12

  23. Go Math grade 6

    The Webster family is planning a barbecue for one hundred people. The Webster family needs one plastic plate for each person at the barbecue. The Stop and Shop store and Market Place Store both sell plastic plates in packages of fifteen for five dollars

  24. Algebra

    The area of a rectangular piece of plastic is 70 square millimeters. The perimeter is 34 millimeters. What are the dimensions of the piece of plastic?

  25. Math

    A rectangular piece of plastic has an area of 30 square millimeters. Its perimeter is 26 millimeters. What are the dimensions of the piece of plastic?

  26. Economics

    Assume that the manufacturing of plastic (PVC) windows is a perfectly competitive industry. The market demand for plastic windows is described by a linear demand function: Q = (6000 -50P)/9. There are 50 manufacturers of plastic windows. Each manufacturer

  27. Go Math grade 6

    What is the result of the problem below? Thanks What is the problem system?The Webster family is planning a barbecue for one hundred people. The Webster family needs one plastic plate for each person at the barbecue. The Stop and Shop store and Market

  28. Geometry

    If the top of the paint container is made of plastic, how much plastic is used to make the top? Assume the thickness of the plastic is negligable. Round to the nearest square inch.

  29. Physics

    Consider a spherical plastic shell with inner radius r=1cm, r2=2cm, and a dielectric constant K=4. The center is hollow. Free charge is bound within the plastic. The charge distribution is spherically symmetric but decays with radius, following a charge

  30. Crime scene chemistry

    What would happen to the denisty of a plastic sample if an excessive number of air bubbles were allowed to accumulate on the plastic surface when placed into the solution?

  31. Math

    A thin plastic band 50 cm long is used to tie seven plastic pipes together. What is the radius of the pipe? The shape is a hexagon but not vertices but curved. My solution was , you get an eqilateral triangle with side 3 r 3 r = 50/6 r = 50/6/3 = 2.73 But

  32. 7th grade math

    A company needs to packages 80 cubic feet of chemicals in to a plastic container, find the whole number dimensions of a container that would use the least amount of plastic

  33. bcc

    if you put honey,water,dishwashing liquid and vegetable oil in a clear jar and then you add asmall of plastic cup, plastic fork, straw and a small piece of styrofoam cup.

  34. Science

    Animals from the deepest places on Earth have been found with plastic in their stomachs. The discovery confirms fears that man-made fibers have contaminated the most remote places on the planet. The study was led by academics at Newcastle University. It

  35. Physics 2

    A sheet of plastic (n = 1.56) covers one slit of a double slit (see the drawing). When the double slit is illuminated by monochromatic light (vacuum = 568 nm), the center of the screen appears dark rather than bright. What is the minimum thickness of the

  36. chem

    A piece of plastic has a mass of 14.2 grams and volume of 16.8cm cube. What is the mass of 1.00cm cube of this plastic? Thanks for your help.

  37. chemistry

    A plastic container with a mass of 30 grams gains 1,140 joules of heat. If the temperature of the container increases 20°C, what is the specific heat of the plastic in the container?

  38. math

    The perimeter of a rectangular piece of plastic is 30 millimeters. The piece of plastic is 5 millimeters tall. How wide is it?

  39. macro economics

    For each event, illustrate the impact on the relevant market and determine what will happen to the equilibrium price and quantity in that market. (40 points – 10 points per line item) Event Market for: Show which curve shifts Equilibrium price rise or

  40. Algebra

    Mrs. Herby bought some carrots. She put 2/5 of them on a platter and the rest in a plastic bag. If there were 8 carrots on the platter, how many carrots were there in the plastic bag?

  41. Maths

    Plastic block A has a mass of 1.2kg. Plastic block B is made from plastic with a density 40% greater than the plastic block. Work out the mass of the plastic cube. Plastic block A is 20cm by 10cm by by 5cm. Cube is 6cm. Is it 6×6×6=216 216 ×1.4

  42. English

    I forgot to include the very last sentences of the day. Thank you very much. 1) Every week a person in Britain uses three plastic bags. They are strong and don’t disappear. They can last hundreds, possibly thousands of years. 2)They are called white

  43. Science

    The science teacher gave each group in the science lab a pair of wires for an investigation on electrical current.Susan noticed that the wires were made of metal,but they were covered with plastic.The wires were covered in plastic because A.plastic is a

  44. Physics

    You have left your bicycle outside in the backyard for three hours on a very cold day. Now you decide to go for a ride. The metal handlebars feel colder than the plastic hand-grips because: Question 4 options: A) The latent heat of fusion of the plastic is

  45. statistics

    A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the supplier. If at least

  46. math (statistics)

    A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the supplier. If at least

  47. SCIENCE

    I am confused by this question. Biodegradable plastics may not break down readily in the sea because a. Submergence in the water will protect them from sunlight b. the water will keep the plastic cool c. microorganisms will rapidly coat the plastic d. a

  48. Chemistry

    Several years ago a company invented plastic ice cubes. These were colored plastic cubes with frozen water (or another substances) inside. That way, as the solid melted, it could cool your drink, but did not dilute it with extra water (from the melted

  49. Physics

    for our lab, we had to fill a semi-circle plastic dish (with a scratch on one side) with water and find the index of refraction of water by putting a pin on one side of the dish, looking through the water, and put a pin on the other side of the dish to

  50. Physics - grade 11

    The speed of light of a plastic is 1.4x10^8. What is the index of refraction in the plastic?

  51. Superglue fuming--fingerprints

    What is an amino acid? Why do they cause superglue to stick to my fingerprints on a cd when I place the cd in a plastic box covered with plastic wrap? I'm 9, so I really need just a simple answer. Thanks.

  52. physics

    2. The speed of light in a certain plastic is 1.88*10^8 m/s. what is the index of refraction of plastic?

  53. Physics

    An optical fiber is made of a clear plastic with index of refraction n=1.6, For what angles with the surface the light remain contained within the plastic guide?

  54. Physical Science

    A friend tell you that a refrigerator door beneath it's layer of white painted plastic, is made of aluminum. How could you check to see if this is true withoutscraping away the plastic?

  55. chemistry

    I have to separate salt, sand, steel shot, copper shot, and plastic pellets(one type is heavier than water. Any help? thank you

  56. Algebra

    Use this proportionality: A correlation V square 2/3 How much more material is needed to manufacture an industrial plastic container with twice the volume of a similar container? A manufacturer of plastic containers prices its product by the amount of

  57. math!!!

    Molten plastic is injected into the centre of a circular mold of constant height, H, through a small hole. The rate of injection is such that the radius of the plastic inside the mould increases so that r(t)= 3t^2 -2t^3 where the mold has maximum radius of

  58. science

    I have a odd question once again. (I'm not creating a report on this) Plastic/ foam in the microwave... I have actually done this myself. I have gone and put a foam container in the microwave and heated it with food in it. (It really wouldn't be advisable

  59. physics

    A foam plastic ( sg = 0.58 ) is to be used as a life preserver. What volume of plastic must be used if it is to keep 20 % (by volume) of a 75 kg man above water in a lake? Average density of a man is equal to 1.04 g/cc. Assume the foam plastic’s top

  60. Science

    Equipment and Materials: measuring spoon, 2 beakers, sieve, 2 plastic containers 8 table spoons of sand, 100 mL of water 15 plastic gems. Hypothesis: what do you think will happen with each mixture and why?

  61. physics

    4. A beam of light in water enters a plastic block (index of refraction=1.40(a) if the angle of incidence is 40, what is the angle of refraction in the plastic?(b) at what angle must the beam be incident on the plastic if the refraction angle is to be 30?

  62. physics

    the average speed of light slows to .75 c when it refracts through a particular peice of plastic. a) What change is there in the light's frequency in the plastic? b) It's wavelength?

  63. science

    I need to find a thin layer of ice that has condensed? go north :-) or... Put 1/3 cup of hot water in the freezer with a piece of plastic over it. The warm moist air will rise and condense on the plastic lid and freeze there.

  64. math

    A manufacturer has a maximum of 240, 360, and 180 kilograms of wood, plastic and steel available. The company produces two products, A and B. Each unit of A requires 1, 3 and 2 kilograms of wood, plastic and steel respectively; each unit of B requires 3, 4

  65. linear programming

    A manufacturer has a maximum of 240, 360, and 180 kilograms of wood, plastic and steel available. The company produces two products, A and B. Each unit of A requires 1, 3 and 2 kilograms of wood, plastic and steel respectively; each unit of B requires 3, 4

  66. math

    A manufacturer has a maximum of 240, 360, and 180 kilograms of wood, plastic and steel available. The company produces two products, A and B. Each unit of A requires 1, 3 and 2 kilograms of wood, plastic and steel respectively; each unit of B requires 3, 4

  67. Carbon Isotopes

    I have a problem with my tree core samples. After graining them with a Wig-L-Bug, we noticed that some of the plastic material which the capsules of the Wig-L-Bug are made with was mixed with our samples turning a little dark the samples. We didn’t pay

  68. art and music

    The three-dimensional arts may also be called the _____ arts. plastic sensory graphic visual plastic?

  69. math grade 12

    A sheet of plastic stops 25% of the light and lets through the residual 75%. What percentage of the light is let through by two sheets of the plastic ?

  70. geometry

    the picture at the right shows the garden in roberts yard.it's a triangle with a right angle,and it's lenght is 9ft,width is 15ft,and height is 12 ft,he wants 2 cover the garden with plastic bc of a sudden drop in temperature.how many square yards of

  71. physics

    we know that the speed of light in a vacuum is 3.0 x 10^8 m/s (18,000 mi/sec). If light travels through thick plastic with a speed of 1.75 x 10^8 m/s, what is the index of refraction through plastic?

  72. physics

    we know that the speed of light in a vacuum is 3.0 x 10^8 m/s (18,000 mi/sec). If light travels through thick plastic with a speed of 1.75 x 10^8 m/s, what is the index of refraction through plastic?

  73. math help

    Mrs. Williams is going to purchase a plastic cover for her outdoor fish pond. The area of the fish pond is 25 m2. However, she must purchase a cover that is 12% more than the pond area in order to cover the entire edges of the pond. The plastic cover costs

  74. science

    a plastic container witha mass of 30 grams gains 1,140 joules of heat if the tempreature of the container increases 20 degrees celcius what is the specific heat of the plastic in the container

  75. english

    One of the concerns about plastic surgery on adolescents is that their bodies are still maturing. In addition to development that may occur in the late teens. This is why plastic surgery shouldn't be introduced teens this is because they have little

  76. algebra

    The perimeter of a rectangular piece of plastic is 22 millimeters. The area is 30 square millimeters. What are the dimensions of the piece of plastic?

  77. physics

    If I send a laser beam in a container of water, (a semicircle shape), the incident ray from laser has to hit the strick flat face of the container at its center. Why? What if the container has plastic wall. Can I ignore the refraction of light through

  78. MAth

    Mrs.Williams is going to purchase a plastic cover for her outdoor fish food pond.The area of the fish pond is 25m2.However ,she must purchase a cover that is 12% more than the pond area in order to cover the entire edges of the pond.The plastic cover costs

  79. Physics

    Violet light and red light travel through air and strike a block of plastic at the same angle of incidence. The angle of refraction is 30.700° for the violet light and 31.350° for the red light. The index of refraction for violet light in plastic is

  80. math

    Eight sided dice can be described as two square based pyramids stuck together at the bases. Their faces are equilateral triangles. If the edge of one die is 2mm, find the difference in materials cost between a solid gold die and a “gold” painted

  81. Art please help me :)

    Picture: Contemporary Retro Molded Black Accent Plastic Dining Armchair with Wood Eiffel Legs its the first picture in google. This wooden and plastic chair design by Ray and Charles Eames communicates a a sense of which artistic charateristic? A. Balance

  82. Art

    Picture: Contemporary Retro Molded Black Accent Plastic Dining Armchair with Wood Eiffel Legs its the first picture in google. This wooden and plastic chair design by Ray and Charles Eames communicates a a sense of which artistic charateristic? A. Balance

  83. General(dont know actual subject)

    My project is research based... I chose plastic surgery.... Question is: why have you chosen this task? ( in the box below write a paragraph explaining why you have selected your particualar task idea.) I really cant think of why i chose plastic surgery

  84. electromagnetism

    A plastic rod is rubbed against a wool shirt, thereby acquiring a charge of -0.8micro colomb. Haw many electrons are transferred from the wool shirt to the plastic rod?

  85. micro economics

    For each event, illustrate the impact on the relevant market and determine what will happen to the equilibrium price and quantity in that market. Event Market for: Show which curve shifts Equilibrium price rise or fall? Equilibrium quantity increase or

  86. PHYSICS

    A 33 cm-tall, 6 cm-diameter plastic tube has a sealed bottom. 266 g of lead pellets are poured into the bottom of the tube, whose mass is 45 g, then the tube is lowered into a liquid. The tube floats with 5 cm extending above the surface. What is the

  87. Error Analysis

    Please help me find the wrong grammar, word use and sentences structure for me.. *It's not essay. It's my homework from teacher to modify What can you do to reduce global warming in Thailand Global warming is big problem for the word. Now, the word want

  88. physics

    The speed of light in a certain piece of clear plastic is 1.95 108 m/s. A ray of light strikes the plastic at an angle of 21°. At what angle is the ray refracted?

  89. physics

    The speed of light in clear plastic is 1.866 ×10^8 m/s. A ray of light enters the plastic at an angle of 29.3 degrees. At what angle is the ray refracted?

  90. english

    Getting done a plastic surgery will contain side effects leading quite severe pains such as: back pain, bruises and so on. This is so serious that you may have to wear head bandages after a surgery. Getting done a plastic surgery will contain side effects

  91. physics

    A 0.200 kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.100 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction.

  92. English

    You have to pay the maintenance fee every month for 50,000 won. You should also pay the gas fee. If you use a lot of gas, you have to pay more money. You have to pay the electricity fee as well. You have to put waste into a waste plastic bag. However, the

  93. science

    for my intro i got a 'Water is the elixir of life'and i got lota of negative impact are trasportation, production is the reliance on fossil fuels,Raw plastic must be heated before it can be injected into bottle-shaped blow molds, and this heat source is

  94. math

    A large game die is a cube measuring 1.2” in length. The die is a solid made from liquid plastic. If a game comes with 6 such dice, how many cubic inches of liquid plastic were needed to make the 6 dice?

  95. physics

    A small plastic sphere with a charge of -5.0 is near another small plastic sphere with a charge of -15 . Part A - If the spheres repel one another with a force of magnitude 8.3×10−4 , what is the distance between the spheres? Express your answer using

  96. physics angular velocity

    A 20g steel weight is placed on the edge of 1 30cm diameter plastic disk. The coefficient of static friction between the steel weight and plastic disk is 0.4. At what angular velocity will the weight slide off the disk?

  97. math

    The mass of a packet of wafers is 64 grams. In each packet there are 4 wafers. If the packets must be placed into a box that can hold a maximum of 3.2 kilograms, calculate: a) The mass of one wafer. b) The number of wafers that the box can hold.

  98. math

    The mass of a packet of wafers is 64 grams. In each packet there are 4 wafers. If the packets must be placed into a box that can hold a maximum of 3.2 kilograms, calculate: a) The mass of one wafer. b) The number of wafers that the box can hold.

  99. science

    Imagine that you are standing in the shallow end of a swimming pool, you look ahead at the bottom of the pool and see a coin, Describe the difference between where the coin appears to be and where it actually is. a clear plastic cube, with exactly the same

  100. Physics

    A plastic rod is rubbed against a wool shirt, thereby acquiring a charge of −4.9 µC. How many electrons are transferred from the wool shirt to the plastic rod? The elemental charge is 1.6 × 10^-19C.

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