1. Biology Help!

    what r Unstable elements that give off radiation what r Tiny vesicles that form when short chauns of amino acids gather together

    asked by Tranese on May 17, 2011
  2. Astronomy

    Where did CMB radiation originate? (a) It is the radiation from the electroweak phase transition when the weak force was spon- taneously broken by the Higgs mechanism. (b) It is radiation from supernovas in the early Universe that produced the heavier

    asked by qwerty on October 1, 2013
  3. Exponets help quick

    What is the simplified form of this expression? 5x(2x(2

    asked by Abagail on August 16, 2017
  4. Biology

    39. Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to

    asked by mysterychicken on February 24, 2010
  5. Biology

    39. Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to

    asked by mysterychicken on February 24, 2010
  6. Science Sorry I just need help one more time!

    Ok I am doing a project in science on radiation. I have to make a brochure. I need help answering these questions about radiation. Or some good sites would be nice too. I looked on google but they didn't really help. Thank you! Where does radiation come

    asked by Amy on January 15, 2009
  7. Reading

    What are the elements of a short story and what about charater in the elements? Since this is not my area of expertise, I searched Google under the key words "'Short story' elements" to get these possible sources:

    asked by Sam on September 26, 2006
  8. chemistry

    Which of the following statements about UV radiation is/are FALSE? (Select all that apply). ? a. UV B radiation covers a longer wavelength spectrum than UV A radiation. b. UV B radiation has sufficient energy to break any covalent bond. c. UV B radiation

    asked by Jasmine on September 21, 2008
  9. Math in Science

    A rock containing a newly discovered fossil is found to contain 5 mg of an unstable form of potassium and 5 mg of the stable element formed from its decay. If the half-life of the unstable form of potassium is 1.3 billion years, how old is the rock? What

    asked by Janey on November 7, 2013
  10. Language arts

    Why are the elements of an autobiographical similar to those of a short story? because the form is about from events in a writer's life*** because most writing forms include narratives because it includes causes and effects because the form is nonfiction

    asked by Madison on August 28, 2017
  11. Physics

    For each of the following functions describing the net force on a particle, determine any and all positions of equilibrium and characterize each as stable or unstable. (a) F = 4x − 2x3, (b) F = x2 + x − 6, (c) F = 5x − 9. Answer: a. x = 0, unstable;

    asked by Ashley on February 15, 2016
  12. Biology

    for my sister again. what be 2 examples of short wave radiation that can trigger mutation. she only found uv radiation.

    asked by Mohammad on March 8, 2012
  13. Chemistry

    Heyy Jiskha!! I need ur help today:) Hope you will help:D My question is that why is supersaturation unstable... I read the explanations for this on many websites but for some odd reason I just cannot get it to sink in my mind. What does it mean by it is

    asked by Priya on February 22, 2013
  14. science

    IDK these help pls 1. Which of the following is a compound? A. O2 B. NH3 C. H2O+NaCl D. N2 2. What is the difference between compounds and mixtures? A. Compounds contain only one element; mixtures contain two or more elements. B. Compounds contain two or

    asked by hawseefoo on October 3, 2018
  15. Science

    Marie and Pierre Curie coined which term to describe the ability of certain elements to give off radiation spontaneously? Florescence Rarefaction Radioactivity** Electromagnetic (**=my answer)

    asked by I Need Help :/ on June 13, 2015
  16. Science

    Which type of radiation emits particles of helium nuclei? alpha radiation beta radiation induced radiation gamma radiation I think a or d

    asked by Michael on November 10, 2017
  17. chemistry

    can nuclear chemists convert elements into unstable ones? If so how?

    asked by Anonymous on October 30, 2008
  18. History

    1) Give a short explanation about mining industry in the 1800s and the effect it had. 2) give a short explanation about Transcontinental railroad construction in the 1800s and the effect it had. 3) give a short explanation about Transcontinental railroad

    asked by Kesha on October 8, 2013
  19. HELP MEH PLS

    Marie and Pierre Curie coined which term to describe the ability of certain elements to give off radiation spontaneously? AM signals travel as changes in ____ Why does the wave of light bend toward the normal as it enters water? The Curies discovered which

    asked by Who am I? That's a secret I'll never tell. You kno on April 1, 2015
  20. Astronomy

    Mergers of two supermassive black holes will be major sources for observations of gravitational waves in the future. What do gravitational detectors aim to detect? -Tiny shifts of fixed objects due to the rippling of space. -Sound waves carried by cosmic

    asked by qwerty on March 16, 2013
  21. Chemistry

    27. Excess exposure to nuclear radiation can cause harm. All of the following statements about radiation are true EXCEPT A. Radiation can damage living tissue because of the high energy associated with the radiation. B. Radiation can damage biological

    asked by Emily on June 8, 2014
  22. lit

    the major elements of drama and distinguishes the form from other genres like the short story and poetry. Using the play Riders to the Sea (Synge)

    asked by Anonymous on January 10, 2013
  23. biology

    I have some questions that relate to table 2.1 which lists the chemical elements that occur naturally in the human body. Similar percentages of these elements are found in most living organisms. a. In what abiotic (non-life) chemical forms are these

    asked by muffy on September 10, 2009
  24. Chemistry

    Most of the matter in the universe is of which element? How and where do elements more complicated than this form? Is this correct? Helium; more elements are form in the sun by nuclear fusion.

    asked by Anonymous on October 9, 2012
  25. college physics

    Human skin (choose all that apply) 1. emits radiation well. 2. absorbs radiation well. 3. does not emit radiation well. 4. does not absorb radiation well. 5. has an emissivity of 0.

    asked by ice cream on October 4, 2011
  26. physics

    Human skin (choose all that apply) 1. emits radiation well. 2. absorbs radiation well. 3. does not emit radiation well. 4. does not absorb radiation well. 5. has an emissivity of 0.

    asked by ice cream on October 4, 2011
  27. Biology

    Proteins are manufactured through the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in the process, they are modified to

    asked by Mina on May 16, 2014
  28. math

    give an example of a set which has just two elements; one element; no elements; an infinite number of elements.

    asked by kikay on June 11, 2010
  29. Biology

    _____________provided significant sources of energy on early Earth, and were most likely involved in the origin of life. Options A) Volcanic activity, violent thunderstorms, and ultraviolent radiation B) Bombardment from meteorites, gamma radiation, and

    asked by Sabrina on August 29, 2007
  30. physics

    the nuclei Co-57 an odd-even unstable nucleus is often used as a source of radiation in nuclear processes. Show that the nuclei is stable relative to beta plus decay by electron capture

    asked by jay on March 30, 2016
  31. History

    1) Give a short explanation about mining industry in the 1800s and give and effect it had. 2) Give a short explanation about Homestead act exodusters in the 1800s and give an effect it had. 3) Give a short explanation about cattle drives/beef industry in

    asked by Kesha on October 8, 2013
  32. science

    which of these describes a chemical reaction? a. Atoms are created by elements b. Atoms combine to form elements c. Atoms of two or more elements repel each other d. Atoms of two or more elements bond to each other** I’m not sure but i think it’s D

    asked by anon on October 4, 2018
  33. NeuroBio

    Which of the following statements is correct? A. Vesicles in the postsynaptic membrane release neurotransmitter into the presynaptic terminal. B. The presynaptic membrane releases neurotransmitter into postsynaptic vesicles. C. Vesicles in the presynaptic

    asked by NeuroBio on January 8, 2019
  34. Chemistry

    How could I tell if an element is stable or unstable? One of the examples is 89/42 Mo The only rule I know entirely is that if the atomic number is greater then 83 then it is unstable. Thanks

    asked by Ana on January 25, 2016
  35. chemistry

    Excited lithium atoms emit radiation at 670.8nm. a. calculate the frequency of this radiation. b. calculate the energy (in eV) of this radiation. c. What color is this radiation?

    asked by Maria on January 22, 2011
  36. chemistry

    Excited lithium atoms emit radiation at 670.8nm. a. calculate the frequency of this radiation. b. calculate the energy (in eV) of this radiation. c. What color is this radiation?

    asked by Maria on January 22, 2011
  37. physical science

    Which of the following statements is NOT true? A. You are exposed to nuclear radiation every day. B. Most of the nuclear radiation you are exposed to occurs naturally in the environment. C. Naturally occurring nuclear radiation is called background

    asked by bee on September 15, 2015
  38. Algebra

    Give the list of elements and write in the form with condition the following sets: the set of natural numbers that are multiples of 3

    asked by vivian on April 3, 2016
  39. english

    what are the elements of plot, i have to analyze a short story using elements of plot , and when i did my essay i failed it , so can anyone please help me please i will really appreciate it

    asked by amanda on January 4, 2010
  40. Chemistry

    Some instruments differentiate individual quanta of electromagnetic radiation based on their energies. Assume such an instrument has been adjusted to detect quanta that have 3.50× 10–16 J of energy. What is the wavelength of the detected radiation? Give

    asked by Kate on November 5, 2017
  41. Chemistry

    When is an isotope considered stable? _(Select all that apply.)_ The isotope does not emit a form of radiation. The isotope’s half-life is longer than the average human life. The isotope emits some form of radiation. The isotope’s half-life is too long

    asked by Quinn on October 22, 2018
  42. science

    seven of the chemical elements exist as diatomicmolecules. do research to find out which seven elements these are. write a short report that describes each diatomic molecule. be sure to include the formula for each molecule please help me ikts extra credit

    asked by Katherine on June 2, 2010
  43. science

    In the process called fluorescence, some substances absorb photons of one kind of radiation (e.g) ultraviolet radiation), and give out photons of a different kind (e.g visible light). When infrared radiation falls on these materials, visible light is not

    asked by Kelvin on March 6, 2007
  44. math

    Xavier's dining room table was unstable because one leg was shorter than the others. He placed a 7/8 inch thick piece of wood under the short leg, and it became even with the other legs, which are 18 3/4 inches long. How many inches long was the short leg

    asked by drea on August 5, 2011
  45. Chemistry ASAP please?

    For electromagnetic radiation with a wavelength of 576.3 nm: (a) What is the frequency of the radiation (in s-1)? (b) What is the energy (in J) of one photon of the radiation? (c) What is the energy (in kJ) of one mole of photons of the radiation So a I go

    asked by Jake on November 4, 2017
  46. graph on excel

    ok so I did a radiation and distance lab: this is my results: Distance(cm) Counts(30 sec) 0 1729 1 634 2 391 3 239 4 150 5 124 6 114 7 82 8 58 9 62 10 60 11 36 12 45 so it asks me to make new columns on excel titled the following:(note: the 2 and 3 are

    asked by hannah on October 3, 2010
  47. literary

    what are least three elements in the poem that you found interesting or engaging(e.g., form, language, conten, and/or other literary elements).

    asked by Anonymous on January 29, 2012
  48. English

    Need to decide which form is needed:present participle, past, past participle of each verb in parentheses. 1. Nora (see) the toy exhibit at the museum. ANSWER=Seen 2. People (speak) French in parts of Canada. ANSWER=spoke 3. That character has (say) "Good

    asked by Ann on April 3, 2011
  49. business communications

    What strategies may you use to incorporate effective visual elements into business presentations? When have you ever sat through a presentation that used visual elements ineffectively? What tips would you give that presenter, knowing what you you now know

    asked by charlotte on November 9, 2009
  50. phsychology

    give example of external, unstable and specific explanation for disappointing event

    asked by reem on May 9, 2011
  51. English

    Hello. Please help me with the verb "purpose". Is it possible to use it in the sentence "The latest terrorist attack is purposed to intimidate the world" or is it used in a different meaning or a different form (if yes, will you please give a short

    asked by Ilma on May 13, 2011
  52. Chemistry

    Which of the following metals would be expected to have the most unstable salts? a) sodium b) zinc c) tin d) silver Please define for me what 'unstable salts' are please?

    asked by Jiskhaa on June 26, 2012
  53. chemistry

    Given the following Unknown atoms with their respective atomic numbers, X; Atomic number 19, Y; Atomic number 15, a. Deduce the identities of the elements X and Y. b. What are the mass numbers of the two elements X and Y? c. Calculate the number of

    asked by bliss on March 9, 2016
  54. Science-Periodic Table

    Where r the elements that form ions with a positive charge located? where r the elements that form ions with a negative charge located? can someone please briefly explain this whole positive and negative charge thing to me. I kind of get it, but the

    asked by Sara on April 8, 2010
  55. college Chemistry

    Warm objects emit electromagnetic radiation in the infra-red region. Heat lamps employ this principle to generate infra-red radiation. Water absorbs infra-red radiation with wavelengths near 2.80um. Suppose this radiation is absorbed by the water and

    asked by Need Help on December 6, 2009
  56. english

    Write a short story about a main character who undergoes a change or learns something. If you feel your creativity is lacking, remember writing about what you know, your own personally experiences or those of your friends and family are easy to turn into

    asked by Ciaria on February 24, 2015
  57. chemistry

    which of the following is true regarding the transition elements? A. Multiple oxidation states resulting from the involvement of d electrons in bonding is a characteristic of transition elements. B. Most transition elements have lower melting and boiling

    asked by Emiko on September 11, 2014
  58. Chemistry

    Two new metallic elements have been discovered, Cimium (Ci) and Sadowium (Sd). Both the pure elements and their solutions form simple cubic lattices. The bond strengths of the Ci-Ci and Sd-Sd bonds are known, but not the Ci-Sd bond. Bond Bond Energy

    asked by youlifex on November 16, 2013
  59. chemistry

    Two new metallic elements have been discovered, Cimium (Ci) and Sadowium (Sd). Both the pure elements and their solutions form simple cubic lattices. The bond strengths of the Ci-Ci and Sd-Sd bonds are known, but not the Ci-Sd bond. Bond Bond Energy

    asked by Harold on November 12, 2013
  60. Chemistry

    Two new metallic elements have been discovered, Cimium (Ci) and Sadowium (Sd). Both the pure elements and their solutions form simple cubic lattices. The bond strengths of the Ci-Ci and Sd-Sd bonds are known, but not the Ci-Sd bond. Bond Bond Energy

    asked by HelpMePLSSS on November 15, 2013
  61. chem

    what are 6 elemts that make up Yellow Gold? What are 6 elements that make up White Gold? What are 5 elements for platinum for gemstone settings? what are 2 elements that make up palladium for gemstone settings? what is 1 element that makes up a diamond? 3

    asked by samantha on November 29, 2010
  62. Physics

    Which radiation will be stopped by a 1-cm-thick layer of steel? Alpha radiation Alpha, beta, and gamma radiation Beta Radiation Both alpha and beta radiation Thanks!

    asked by A.S on April 2, 2018
  63. 6th gradeScience

    Help!!!! I can't find these answers anywhere and I don't have a science text book. 1. A tough outer covering that lies right outside the cel membrane. 2. A twisted membrane with portions that break off to form vesicles that tranport materials.

    asked by Eryn on December 8, 2009
  64. Science

    Any help on this I have to go to bed!!!! Help!!!! I can't find these answers anywhere and I don't have a science text book. 1. A tough outer covering that lies right outside the cel membrane. 2. A twisted membrane with portions that break off to form

    asked by Eryns on December 8, 2009
  65. please correct grammar in my paragraph

    The critics of power plants are right: The amount of radiation power plants release is dangerous. However, people don’t realize that they are constantly exposed to radiation by various ways. One can get exposed to radiation of 350 millirems from just

    asked by julie on November 1, 2007
  66. chemistry

    Technetium-99m emits only gamma radiation. Why would this type of radiation be used in diagnostic imaging rather than an isotope that also emits beta or alpha radiation?

    asked by Boo Boo on October 7, 2012
  67. chemistry

    Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.

    asked by Angel on February 2, 2011
  68. chem

    Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.

    asked by Anonymous on March 5, 2010
  69. biology

    Ionophores are drugs that act as channels in membranes. Each ionophore has its own specificity with regard to the type of ion that will pass through it. The selected ion is able to move across the membrane in either direction, depending only upon the

    asked by Ty on October 15, 2007
  70. Music

    In an essay, describe how a composer would incorporate rhythm, dynamics, melody, harmony and texture, and timbre into a composition to add interest and character. Remember to discuss what each of these elements does. I'm not sure exactly how to start this

    asked by Nikki on June 9, 2017
  71. English 125 introduction literature

    summarize the major similarities and differences between the forms of drama, poetry, and the short story. Demonstrate your ideas with textual examples from the course readings. In your response, include at least one example of each literary form. If you

    asked by Ethel on August 20, 2012
  72. chemistry

    What kinds of elements form covalent bonds? What kinds of elements form ionic bonds? explain please help

    asked by Anonymous on August 27, 2017
  73. english

    Can you give me a short story in narrative form using these words:renounced, swaggering, raucous, insolently, simultaneously, incredulously, cynically, maneuvered, deprived, haggard, institution, reformation.

    asked by John on October 8, 2012
  74. writing

    In your post, summarize the major similarities and differences between the forms of drama, poetry, and the short story. Demonstrate your ideas with textual examples from the course readings. In your response, include at least one example of each literary

    asked by sjrock on June 8, 2011
  75. Science

    Why are salts, such as sodium chloride made of elements found on opposite ends of the periodic table? a. elements on the far left tend to form positive ions while those on the right tend to form negative ions. b. elements on opposite ends of the periodic

    asked by Anonymous on May 29, 2007
  76. Science

    Does infrared radiation or ultraviolet radiation have wavelengths that are shorter than visible light? My answer is ultraviolet radiation. I am really sure about this one. Am I correct?

    asked by Reed on September 10, 2010
  77. Chemistry

    Elements with an even number of protons and neutrons A. never undergo alpha decay emission. B. have a single magic number of protons or neutrons C. always have a proton-to-neutron ratio of about one D. are usually stable E. are usually unstable

    asked by Peter on September 9, 2012
  78. ap bio

    16 .Action potentials are generated along a neuron because __________. A.of cytoplasmic streaming within the neuron B.depolarization of the membrane at one point causes an increase of permeability to sodium at the next point C.they are pulled along by

    asked by carol on November 6, 2008
  79. Advanced Functions - Grade 12

    Radiation from the sun keeps us alive, but with the thinning of the ozone layer, it is important to limit exposure. Most of us know that the sun is far more intense at the equator than at the poles. The relationship between the intensity of radiation with

    asked by Nish on July 20, 2010
  80. earth

    Atmosphere Homework! 1.Which of the following layers of the atmosphere is closest to space? 2.A barometer measures? 3. The atmosphere contains tiny solid particles called what? 4.The process by which the atmosphere slows Earth's loss of heat to space is

    asked by Kelly on May 5, 2011
  81. Chemistry

    Sulfur can form a bond with any of the following elements: oxygen, chlorine, bromine, or phosphorus. Which of those elements when bonded with sulfur produces the greatest degree of ionic character? Explain your answer.

    asked by Jonah on November 5, 2018
  82. science

    Examine the following equations. A. 23490Th→23491Pa+0−1e+γ B. 60∗27Co→6027Co+γ C. 23490Th→23088Ra+42He D. 146C→147N+0−1e Which equation or equations represent gamma decay? B C A and B A A and D D C and D Which describes the relationship of

    asked by Dianni on November 29, 2018
  83. Biology

    37. Both animals and plant cells undergo cytokinesis after mitosis ends. How is the process and its outcome the same for both animals and plant cells? How is the process and its outcome different for animal and plant cells? Due to the presence of a cell

    asked by mysterychicken on February 6, 2010
  84. Biology

    37. Both animals and plant cells undergo cytokinesis after mitosis ends. How is the process and its outcome the same for both animals and plant cells? How is the process and its outcome different for animal and plant cells? Due to the presence of a cell

    asked by mysterychicken on February 7, 2010
  85. Biology

    37. Both animals and plant cells undergo cytokinesis after mitosis ends. How is the process and its outcome the same for both animals and plant cells? How is the process and its outcome different for animal and plant cells? Due to the presence of a cell

    asked by mysterychicken on February 7, 2010
  86. chemistryI

    If 2 protons and 2 neutrons are ejected from a radium nucleus with atomic number 88 and mass number 226 which element will be the result? Could someone please tell me how to work this out. Thanks. The atomic number is the count of protons...so if two are

    asked by laura on March 15, 2007
  87. Science

    Helloo.. i got a worksheet about compounds,elements andnumber of elements. it tells me to list the elements and number of atoms found in each of the compounds and i don't understand how to do get the elements and the # of atoms in the equation.. PLease

    asked by Hannie on July 16, 2008
  88. Science

    If an unstable isotope contained 5 protons and 8 neutrons, how many neutrons would need to decay to make the unstable isotope stable?

    asked by ScienceMan on October 6, 2011
  89. Earth Science

    If an unstable isotope contained 5 protons and 8 neutrons, how many neutrons would need to decay to make the unstable isotope stable? Please Help!

    asked by Tyshawn on October 6, 2011
  90. science

    Special telescopes, such as the Chandra X-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-Rays give off a spectrum of light that tell astronomers what elements make up

    asked by maddie on October 7, 2017
  91. science

    Special telescopes, such as the Chandra X-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-Rays give off a spectrum of light that tell astronomers what elements make up

    asked by maddie on October 7, 2017
  92. science

    Special telescopes, such as the Chandra X-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-Rays give off a spectrum of light that tell astronomers what elements make up

    asked by maddie on October 6, 2017
  93. science chem

    give one example of two elements that would be placed incorrecty if they were in order of their relative atomic masses. and explain why placing these two elements like this would not be correct. Pleasw could someone help me. Co/Ni is one. Ar/K is a second

    asked by sam on May 1, 2007
  94. GENERAL CHEMESTRY

    Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.

    asked by ROSE on January 13, 2013
  95. chemistry

    Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate

    asked by mema on June 25, 2011
  96. science

    Special telescopes, such as the Chandra x-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-rays give off a spectrum of light that tell astronomers what elements make up

    asked by layla on October 9, 2017
  97. science

    Special telescopes, such as the Chandra x-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-rays give off a spectrum of light that tell astronomers what elements make up

    asked by layla on October 10, 2017
  98. science

    Special telescopes, such as the Chandra x-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-rays give off a spectrum of light that tell astronomers what elements make up

    asked by kayla on October 10, 2017
  99. science 8th grade

    ok, i don't have answer to these questions! #8: The interaction of air, water, and _________ causes weather. #9: Violent storms generally form where? #10:clouds form as warm air rises, expands, cools, and becomes saturated, and then _______________

    asked by sammie doodles :-) on March 7, 2012
  100. English - 12th grade

    Can anyone help me find a short story that parallels my life? I have project where i need to find a short story that is parallel to my life. The short story needs to be British, Scottish, Welsh or Irish. I've looked through countless of short stories but i

    asked by Miguel Osorio on May 31, 2012