1. science
    hello i need help Problem How could renewable energy sources be used in a house? Devise a Plan 1. Consider what you learned about renewable energy sources. Use what you learned to design a house that operates entirely on renewable energy sources. Focus on three major needs: (1...
  2. science
    After reading the article “The Land Blew Away,” reflect back on the accounts of the people who witnessed the Dust Bowl. Write a paragraph in reaction to the survivors’ stories as well as your thoughts on what it might have been like to experience a dust storm. As you ...
  3. Materials Science and Engineering
    We know from literature that a certain material “A” exhibits an electrical conductivity of σ=100 S/cm at room temperature. However, we would like to confirm this value by performing electrical conductivity measurements in our labs. To perform these experiments we obtain a...
  4. Science
    Which step in the nitrogen cycle is accelerated at the beginning of the eutrophication process? 1)denitrification 2)nitrogen fixation 3)producer uptake of nitrogen 4)consumer decomposition I think #3 Thank you.
  5. Science
    Earths History unit test 8th grade Under which of the following conditions would a fossil most likely form?
  6. English
    1. learning subjects: English, math, science, etc. 2. subjects to learn:English, math, science, etc. 3. studying subject:English, math, science, etc. 4. subjects learning:English, math, science, etc. 5. taking subjects:English, math, science, etc...
  7. Science
    Draw a transverse wave with a frequency of 5 wavelengths per second.
  8. Materials Science and Engineering
    Energy dispersive x-ray spectroscopy (EDX) is a commonly used characterization technique in Materials Science to determine the elemental composition of materials. To do this, EDX measures the emitted characteristic x-rays from materials (e.g. Kα), generated due to the ...
  9. Science
    URGENT! How is Miami's summer solstice different from Singapore's summer solstice?
  10. science
    Which options correctly identify a section or part of a typical laboratory report? (Select all that apply) materials procedure acknowledgements objective A,B,D?
  11. science (circuits)
    A students finds a resistance in a transistor radio. When the resistance is connected to a battery of 1.5 volts, the current is 0.0025 amperes. When the resistance is connected to four batteries with a voltage of 1.5 volts, the current measures to be 0.1 amperes. When the ...
  12. Science/Astronomy
    If dark energy were to significantly increase or decrease, what outcome could this have on the universe?
  13. science
    Which options accurately identify a reason why it could be beneficial for the government to regulate scientific research and the distribution of information? (Select all that apply) The government could minimize fraudulent practices. The government could ensure research is ...
  14. science
    Read the statement and then apply it to the scenario. Statement In science, it is not possible to prove hypotheses right. This is not the fault of scientists and their experiments; the scientific method is only able to tell scientists if their hypotheses are incorrect. ...
  15. science
    In order to write for the general public, what should a scientist do? (Select all that apply) describe detailed experimental methods use technical jargon use metaphors, games, or stories determine the level of knowledge of the audience C, D?
  16. science
    Which options correctly identify a feature of a scientific report that would suggest the report reflects scientific thinking? (Select all that apply) uses inductive or deductive reasoning shows strong evidence of research bias contains arguments that use the data collected ...
  17. science
    When an electric current is passed through water during the process of electro says two gases are formed when gases boiling point of negative one hundred and three degrees Celsius and the other has a boiling point of negative two hundred and fifty degrees Celsius as a physical...
  18. Environmental Science
    What is an extreme thermophile? Thank you!
  19. physical science
    Hi, I need to do an experiment in physical science (I'm in connections academy which is online) and I don't have all of the materials to do it. I did the part I have the materials for but I need to hang a ruler or meterstick off the side of a table with 20, 40, and 60 cm ...
  20. Science
    A boy walks 100 m north then walks 50 m east and then 80 m south. Calculate the net displacement.
  21. science
    24g of magnessium burn in air to form magnessium oxides as show below. 2Mg+o²=2Mgo how much magnessium oxide is found in the product.
  22. Science
    6.A scientist is studying a plant species in which the flower color genes are codiminant. The scientist crosses a plant with red flowers and a plant with white flowers. The offspring will most likely have.. A. Red flowers B. White flowers C. Pink flowers D. Red flowers with ...
  23. math /science
    how do I convert 2.56m/s^2 to km/s^2
  24. Science
    When an electric current is passed through water during the process of electro says two gases are formed when gases boiling point of negative one hundred and three degrees Celsius and the other has a boiling point of negative two hundred and fifty degrees Celsius as a physical...
  25. Science
    If a man travels 2 km towards east and returns back 1 km. What is the displacement?.
  26. Science
     Which of these contains the most tightly packed matter particles? (1 point) A. tea B. carbon dioxide C. a milkshake D. cardboard
  27. Science
    If an object is buoyant then it will (1 point) A.float. B.sink. C.attract metal. D.loses it's shape.
  28. science
    Suppose that you and a friend decide to use two different methods to make popcorn for a snack. Your friend uses a hot-air popcorn popper. You put a bag of microwave popcorn into a microwave oven. Use what you know—about radiation, conduction, and convection—to explain how ...
  29. Science
    You make a terrarium for your school’s science fair by putting some soil into a glass container and adding small plants. You moisten the soil with water and add a slug. You cover the terrarium with clear plastic that has vent holes. Then, you place the terrarium in a sunlit ...
  30. Science Chemical Reactions
    1. The current atomic model would be revised if  (1 point) A• better microscopes were being used to study its structure. B• better microscopes are invented in the future. C• new information about an atom’s structure is discovered. C• a new element is discovered in ...
  31. Science
    In approximately what year did oil and gas become the dominant fuels for the US? 1880 1910 1940 1970 2000
  32. Science
    What causes seasons
  33. Science
    What does H2O stand for in science
  34. Science
    what is the function of the small intestin?
  35. Science
    What happens to air and water during the steps of cloud formation?
  36. Science
    The earth is in constant motion. It rotates and revolves. Which of the following is NOT TRUE of the Earth's motion? 2 points A Due to the revolution of the Earth, we experience seasons. B The Earth rotates on its axis once every 24 hours. This causes day and night. C The ...
  37. Science
    Hello. I am trying to figure out how to solve polygenic Punnett squares. In order to get extra credit on a test, I have to learn how to use them. I've tried looking at images and tutorials, but I'm still confused.
  38. Science
    Name ONE of the air masses that can be found in North America (remember to use both the temperature and humidity descriptors). I searched everywhere, even looked back at my lesson, and I still can't find out, if you can help me or send me a link, I will be very grateful
  39. Science
    Three isotopes of hydrogen
  40. Science
    Distance 55 m time 10.30 am and distance 255 m time 10.32 am. Find the avg. Speed. Plz advice how total time is being calculated.
  41. SCIENCE
    A sphere of mass 50g and diameter 20cm is rolling with a speed of 5cm/sec . What will be its its total energy.
  42. Science
    I am doing a project right now and I'm kind of confused. I did an experiment and this is a question asked "Scientists changed the independent variable to learn about the Mpemba Effect. What did you learn from your results? Do you agree that the Mpemba Effect is real?" I did an...
  43. Science
    If an organism is heterozygous for a particular trait, the organism. A.has the same allele on both chromosomes in a chromosome pair. B.has different alleles on the chromosomes in a chromosome pair.* C.is missing alleles on the chromosomes in a chromosome pair. D.has extra ...
  44. science
    How can we remove temporary as well as permanent hardness of water by permutit process?
  45. science
    What is equinox?
  46. Science
    1. A body is moving along a circular path of radius R. What will be the distance covered and the displacement of the body after half a revolution? 2. A person starts from his house and travels a circular distance of 15 km around the walled city before returning back. What is (...
  47. science
    Which option accurately describes scientific theories? (Select all that apply.) are descriptions of phenomena that can be observed to consistently happen over and over again are testable questions that can be investigated through experimentation have withstood the testing of a...
  48. Science Chemistry
    How do I make an electron dot diagram for MgO? (
  49. science
    1. The key ingredient in chocolate; grinding the beans of the cacao tree produces chocolate liquor, which yields cocoa butter and cocoa powder. 2. The key ingredient in chocolate; grinding the beans of the cacao tree produces chocolate liquid, which yields cocoa butter and ...
  50. science
    Examine the situation. Gregor Mendel wondered how traits were inherited, but the technology to study genes was unknown. By crossing pea plants and observing their traits, he concluded that the traits of living organisms are controlled by structures called genes each gene is ...
  51. science
    Which option correctly demonstrates scientific thinking in practice? The lava flowing from a volcano is very hot because its temperature has been measured to be over 1,000 ºC. The lava flowing from a volcano must be very hot because it is a liquid. The lava flowing from a ...
  52. science
    Define inductive reasoning. answering questions by analyzing specific observations and using them to come to a more general understanding doubting or not accepting conclusions or ideas until they have been adequately tested and verified answering questions based on what can be...
  53. science
    Determine the CFU/ml if 1 ml of the 10-5 dilution is plated and 372 colonies are present following incubation. Thank you!
  54. science
    Which option correctly defines a scientific theory? an explanation for observable facts that is supported by experimental evidence a scientist’s best guess, or assumption, about the cause of a problem a process of carrying out specific, well controlled tests in order to ...
  55. science
    The temperature in the room is rising because the explosion is releasing _____ energy into the air, increasing the speed of the air molecules in the room.
  56. science
    For the human body to function correctly, the right amount of sugar must be present in the blood. Several hormones are produced by the body as part of a mechanism to counteract changes in blood sugar so that the amount of sugar remains relatively constant. Which characteristic...
  57. science
    What was the big Bang theory? How did scientist learn about it? Why is it so important today?
  58. English
    Subject names at school are as follows. math,science, social studies, computer science,etc. ----------------------------------------​----------- Can we use 'information' instead of 'computer science' as a subject name?
  59. Science
    #3) A person with trisomy 21 has an extra copy of chromosome 21. What happened during meiosis that caused the person to get three, instead of two, copies of chromosome 21? A) nondisjunction B) genetic recombination C) Binary fission D) Crossing Over I'm thinking that sounds ...
  60. Science
    Calculate the POH of a solution when H+ and PH is given
  61. Science
    An ideal solution made up of benzene C6H6 and toluene C6H5CH3 has mole fraction of benzene as 0.025,0.5,0.75,1.0 at various concentration. calculate the molar fraction of toluene Calculate the total vapour pressure of the solution at these concentration??
  62. science
    find the acceleration due gravity on the surface of Neptune. given that mass of Neptune is 16.7 times that of the earth and the radius of Neptune is 3.89 times that of the earth (Re = 6380 km )
  63. Science
    Why is the gravitational potential energy of an object 1 meter above the moon's surface less than its potential energy 1 m above earth's surface is it c object's acceleration due to gravity is less on the moon
  64. Science
    Acetic acid(CH3O2H) reacts with isopentyl alcohol (C5H12O) to yield isopentyl acetate acetic acid with isopentyl alcohol is 45%,how many grams of isopentyl acetate are formed from 3.5g of accetic acid and 4.75g of isopentyl alcohol? The reaction is ;
  65. Science
    A 50.0ml of volume silver nitrate solution contains 0.0285 moles of silver nitrate, what is the molarity of silver nitrate
  66. Science
    A simple of oxygen gas at room temperature and 1.03atm occupies a volume of 22dm³. Find the volume of the oxygen gas at STP?
  67. Science, chemistry
    Electrophilic substitutions reaction of pyrrole
  68. Science
    I am a world of five letter People eats me If u remove my first letter i will be a form of energy If u remove my 2nd i will be needed 4 living If u remove my 3rd letter i will be a preposition If u remove my 4th letter i will be frink 4 u Ans if u r mastermind !
  69. science
    A boy moves 100m towards North then 70 my towards East then what is its displacement
  70. Science
    a machine must be driven at 100 r/s from a belt pulley of 600 mm diameter revolving at 72 r/s . the maximum tensile force on the belt must not exceed 3000n .assume that the ratio of the tensile force is 2,5:1. A Diameter of the driven pulley. B the power in kW that can be ...
  71. Science
    a machine must be driven at 100 r/s from a belt pulley of 600 mm diameter revolving at 72 r/s . the maximum tensile force on the belt must not exceed 3000n .assume that the ratio of the tensile force is 2,5:1
  72. Science Help
    Place the following words into the illustration below gametes, sporophyte, gametophyte, and zygote. Explain how the terms are related. MY ANSWER 1. sporohyte 2. gametes 3. gametophyte 4. zygote I just need to explain my answer but I do not know how to. Please help me!!!
  73. science
    I need help with finding some sources of error! My experiment is that there is one candle lit and five different sizes of beakers being upside down onto the candle (one at a time) and seeing how long it takes for the candle to burn out for each beaker. I already have one but ...
  74. Science
    What would you do to measure the volume of a baseball? I've checked my notes and even opened my book! Please help! (I don't think I need a formula yet, I'm not being taught them in Science)
  75. English
    We were brought up together; there was not quite a year difference in our ages. I need not say that we were strangers to any species of disunion or dispute. Harmony was the soul of our companionship, and the diversity and contrast that subsisted in our characters drew us ...
  76. Science
    How is velocity different from speed?
  77. Science
    I’m really confused on the Lesson 10: Structures and Properties of Matter Unit Test for 6th grade. Can anyone explain it to me?
  78. Science (Last question of these)
    Ball A, with a mass of 10kg, is moving to the right at 20 m/s. Ball B is moving to the left at 20 m/s. Upon collision, Ball B comes to a standstill, and Ball A moves to the left at twice its original speed. What is the mass of ball B? How do I do this?
  79. Science
    Ball B, with a mass of 30kg, is moving to the left at 10 m/s. With what velocity should Ball A, with a mass of 10kg, move to the right and collide with 2, so that ball A rebounds with a velocity of 30 m/s, and Ball B with velocity of 10 m/s, after the collision? Assume the ...
  80. Science
    The earth is in constant motion. It rotates and revolves. Which of the following is NOT TRUE of the Earth's motion? A Due to the revolution of the Earth, we experience seasons. B The Earth rotates on its axis once every 24 hours. This causes day and night. C The rotation of ...
  81. science
    Why must not the condensed water drip into the flask?
  82. Science
    Ball A, with a mass of 20 kg, is moving to the right at 20 m/s. At what velocity should Ball B, with a mass of 40 kg, move so that they both come to a standstill upon collision? How do I solve this?
  83. Science
    Is the Yacca Mountain facility currently in use? Why or why not?
  84. Science
    I don't know anything to put for "Y" for Eukaryote. Help please.
  85. Skills for success science
    Plz help due tomorrow would of done it but I had a lot of school work but here the question which of the following factors drives all the weather on Earth, including large-scale storms and local weather systems? Plz help not asking for answers but help plz and thank you
  86. science
    how does mass and aceleration affect force???
  87. Science
    Choose all of the chemical reactions which correctly show that chemical reactions must obey the Law of Conservation of Matter. a. CH4 + 2O2 → CO2 + H2O b. H2 + O2 → H2O *** c. C6H12O6 + 6O2 → 6CO2 + 6H2O d. 2CO + O2 → 2CO2 *** e. 4P + O2 P4O10
  88. Science
    1) What unit is speed measured in? 2) Why is it important to include units when describing motion? I've read this entire lesson. I just can't seem to find these answers.
  89. Science
    How do external factors (such as stirring or shaking) determine whether a mixture will become a mechanical mixture or a solution?
  90. Math
    Isaac and Sakura are both doing a science experiment where they are measuring the temperature of a liquid over time. Graphs that represent each of their data are shown below. mc003-1.jpg mc003-2.jpg Which statement is correct? The slope of the graph that represents Isaac’s ...
  91. science plzzz help
    From inside to out, describe the components of an atom. What makes one element's atoms differ from another element's atoms?
  92. science
    which of the following is an example of recycling a renewable resource? a turning food scraps to compost b washing plastic forks and use them again. need help please only right stuff
  93. Science
    1.) A 2OL Of gas is found to exert 3.5atm at 25°C what would the pressure be if the temperature is changed to 30°C.
  94. Science
    Why can't we use static electricity to accomplish certain things, such as activate or charge an electric instrument?
  95. Science
    1.Carrying capacity is the maximum number of_________ that an ecosystem can support. A - different species B - Individuals in a population C - habitats D - limiting factors 2. end an island ecosystem, a species of beetle feeds on the leaves of a Shrubbery plant. A species of ...
  96. Science
    Because the tilt of Earth's axis always points in the same direction, the seasons in the Northern and Southern Hemispheres are always _______ Options: A : Same B : Opposite C : three months apart. D : six months apart. PLEASE HELP ME ASAP
  97. Science
    You will be designing and carrying out your own experiment to investigate the effect different forces have on an object’s motion. The experiment you design should test at least one of the forces that affect motion that you have learned about in this unit. It should be ...
  98. Science
    Carrying capacity is the maximum number of_________ that an ecosystem can support. A - different species B - Individuals in a population C - habitats D - limiting factors 2. end an island ecosystem, a species of beetle feeds on the leaves of a Shrubbery plant. A species of ...
  99. Science
    Can someone check my answer? ____ is anything that has mass and volume. My answer: matter. Is that correct?
  100. Math / geometery
    A science museum has a spherical model of the earth with a diameter of 6.5 m. What is the volume of the model to the nearest cubic meter? Show your work.
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