What a vibrating object dose to the air particles around it? It makes them move...creating pressure waves that propagte through the air, which we detect as sound if it is in the "sound" frequency wave

44,515 results
  1. Chemistry

    5 orange gas particles 6 blue gas particles 3 green molecules of gas (two particles attached together) If the partial pressure of the diatomic gas is 0.390 atm, what is the total pressure?

  2. Phase diagram

    Question: A solid substance has a vapor pressure of 800 mm Hg at its melting point (80 degrees C). Describe how the solid behaves as temperature is raised from room temperature to 80 C while the atmospheric pressure is held constant at 760 mm Hg. I think

  3. Calculus Help

    When a foreign object lodged in the trachea (windpipe) forces a person to cough, the diaphragm thrusts upward causing an increase in pressure in the lungs. This is accompanied by a contraction of the trachea, making a narrower channel for the expelled air

  4. science --- pls check my work!!!

    hi, pls check my work asap! 1. A ___ has a definite shape and a definite volume. (1 point) solid*** liquid gas molecule 2. Why is a gas able to flow? (1 point) Its particles have melted and can move around.Its particles have high viscosity and can move

  5. Science

    Which of the following statements best describes the particles of liquid? a.The particles are far apart and moving fast. b.The particles are close together but moving past each other. c.The particles are far apart and moving slowly. d.The particles are

  6. chemistry

    Question: Consider this molecular-level representation of a gas. There are: 5 orange gas particles 6 blue gas particles 3 green molecules of gas (two particles attached together) If the partial pressure of the diatomic gas is 0.510 atm, what is the total

  7. physics

    two charged particles are projected into a magnetic field that is perpendicular to their velocities. if the particles are deflected in opposite directions, what dose this tell you about them?

  8. science help

    What is the relationship between atmospheric pressure and the density of gas particles in an area of decreasing pressure? As air pressure in an area decreases, the density of the gas particles in that area decreases. As air pressure in an area decreases,

  9. Science

    24. What does the thermal energy of an object depend upon? A. The temperature and arrangement of the particles in that object. B. The temperature, weight, and number of particles of that object. **** C. The heat of that object and the density of particles.

  10. PhYs...alpha particles

    how do u investigate how the range of alpha particles in air is affected by air pressure? Like..a method and what materials that wud be used.

  11. science

    1) In a syringe, what happens to the air paricles when you push the plunger? 2) In a syring, what happens the the air particles in the bubble from the bubble wrap when you pull up the plunger? 3) Are there more air particles in the bubble when it is

  12. Science "HELP"!

    Passage:The particles of matter are in constant motion. The energy of motion is called kinetic energy, so the particles of matter have kinetic energy. As matter becomes warmer, its particles move faster. As a result, their kinetic energy increases.

  13. Dosage calculations - Bob, please help

    Weight - 20 pounds 6 ounces Ordered dose - 1.5mg per kilogram per day recommended dosage from drug label - 3mg every 8 hours. 1.What is the individual dose? to find the individual dose i'll first convert pounds to kg which is 9.26 kg. I will then multiply

  14. Science

    For a reaction to occur, the energy of the system must meet the activation energy threshold. Which best explains why increasing the temperature increases the rate of a reaction? A) Because more particles spread out away from each other B) Because more

  15. science help PLS

    What is the relationship between atmospheric pressure and the density of gas particles in an area of decreasing pressure? As air pressure in an area decreases, the density of the gas particles in that area decreases. As air pressure in an area decreases,

  16. Science

    Which choice describes how energy is transferred at the particle level through the process of conduction? A. The fast-moving particles in the colder material collide with the slow-moving particles in the hotter object. The collisions transfer energy from

  17. Chemistry

    Which of these most accurately describes the motion of gas particles? 1.) particles making up gases are mostly fixed in their locations and have vibrational motion. 2.) particles making up gases have few intermolecular interactions and are free to move.

  18. Chem

    Which of the following statements is part of the kinetic theory? The particles of a gas move independently of each other. The particles in a gas move rapidly. The particles in a gas are relatively far apart. all of the above

  19. Physics

    An electron and a proton execute uniform circular motion in the presence of a uniform magnetic field. If the radius of the circle is the same for both particles, which of the following statements is true? A)Both particles move in the same direction; the

  20. Physical Science

    If we double the frequency of a vibrating object what happens to its period?

  21. Science

    Why is a gas able to flow? It's particles have melted and can move around. It's particles have high viscosity and can move around. It's particles have enough energy to move around. It's particles have enough pressure to move around.** not sure of the

  22. Science

    2. why is gas able to flow? a) Its particles have melted and can move around b) Its particles have high viscosity and can move around c) Its particles have enough energy to move around d) Its particles have enough pressure to move around 3. Which of the

  23. air mass movement

    Fill in the blanks...Air masses MOVE from areas of__________ pressure to ares of ______________ pressure.

  24. Physics

    12. Which measurement accounts for the fact that equal energies of different kinds of radiation cause different degrees of biological effect? * 2 points equivalent dose absorbed dose prescribed dose* ionizing dose Kindly help me double check this question

  25. Physics

    An electron and a proton execute uniform circular motion in the presence of a uniform magnetic field. If the radius of the circle is the same for both particles, which of the following statements is true? a. Both particles move in the same direction; the

  26. science

    I need some one to check my work. plz:) What is the force required to accelerate 1 kilogram of mass at 1 meter per second per second. 1 pound 1 kilometer 1 gram 1 newton*** Mass and _____ affect the gravitational attraction between objects. air resistance

  27. sound waves

    What a vibrating object dose to the air particles around it? It makes them move...creating pressure waves that propagte through the air, which we detect as sound if it is in the "sound" frequency wave

  28. Chemistry

    The entire volume of a balloon is filled with air. However, over time, the balloon becomes soft as the air pressure inside it decreases. According to the gas laws, which answer choice best describes the cause for the decrease in the balloon's air pressure?

  29. Science

    The entire volume of a balloon is filled with air. However, over time, the balloon becomes soft as the air pressure inside it decreases. According to the gas laws, which answer choice best describes the cause for the decrease in the balloon's air pressure?

  30. Science

    Laith notices that the air in his science classroom is much warmer than the air in his math classroom. Which statement describes how the air particles are different in his colder math classroom? A. They move faster on average B. They are vibrating C. They

  31. physics

    An air compressor is a device that pumps air particles into a tank. A particular air compressor adds air particles to its tank until the particle density of the inside air is 40 times that of the outside air. If the temperature inside the tank is the same

  32. 8th grade science

    I'm not sure what's the correct answer: 9)Which of these characteristics can only be attributed to a wave of red light? A)The energy of the wave travels in the same direction as the wave travels. B)The wave travels by vibrating the particles of the medium

  33. Science

    An object is vibrating.Yourdog can hear it but you cant .What most likely is happeningz? A.ther is no matter to carry the vibrations B.the object is not vibrating in a range for humans to hear C.there is no rarefactions D.the sound isnt reaching your

  34. Chemistry

    help me to start on this 28. What causes Brownian motion? o Brownian motion is caused by _______________ of the molecules of the dispersion medium with the small, dispersed colloidal particles. These collisions help prevent the colloidal particles from

  35. physics

    a)Estimate how long it takes for the cold air to fall out when you open the door of your refrigerator. For simplicity, assume your fridge is a cube of height 1 meter, and that the cold air inside is 5% denser than the warm air outside. Imagine that you

  36. vapor pressure

    The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 450C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at

  37. Energy Transfer in Natural Systems

    If u reach into a hot oven to remove a pizza, ur arm is not burned by the hot air but would be burned if u touched the pan. Explain. If u reached into a hot oven to remove a pizza, ur arm would not get burned by the hot air, instead it would get burned if

  38. Physics

    How fast would a bird move in the air if it were flying with a speed of 50 m/h directly into a strong wind of 50 m/h? a) 50 m/h b) 100 m/h c) 0 m/h What is the resultant of a 6 N east force pushing on an object and a 8 N force acting on an object at the

  39. health

    What is atmospheric pressure? A. Pressure of the air inside the body B. Pressure of the air outside the body C. Pressure of the air within one’s mouth D. Pressure of the air within one’s lungs i think its D

  40. Chemistry

    What's the difference between the pressure of a system and the partial pressures in relation to Le Chatelier's principles? I know that when the pressure of the system is increased, it goes to the side with less moles/particles and when decreased it will go

  41. geography

    How does plate movement create mountains? A.The pressure created by moving plates forces magma up through Earth's crust, forming mountains. B.When two plates push against each other, the pressure makes the crust bend to form mountains. C.When plates slide

  42. science

    The temperature of an object is directly related to A. the mass of the object. B. the motion of its particles. C. the potential energy of its chemical bonds. D. the volume of the object.

  43. Science

    1) Instead of using the word "random",is it acceptable to say particles in a liquid move about in "different" directions? 2) Why does ice have a higher density than water vapour? Is it because ice has a greater mass in a fixed volume? 3) The statement

  44. Science...Please help

    What is friction? Can you give me some examples? -THANK YOU FOR ALL YOUR HELP! friction: Ever have a pinwheel and move it through the wind? Friction makes the wheel turn. Ever on a bike an press the brake? Friction makes the wheel stop. Friction is the

  45. vapor pressure

    The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 450C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at

  46. vibrations

    what a vibrating object dose to the air particles around it? The vibrating object sends out a pressure-variation (sound) wave of compressions and rarefactions, with a frequency equal to the vibration rate.

  47. Science

    Laith notices that the air in his science classroom is much warmer than the air in his math classroom. Which statement describes how the air particles are different in his colder math classroom? A. They move faster on average B. They are vibrating C. They

  48. physics

    An air compressor is a device that pumps air particles into a tank. A particular air compressor adds air particles to its tank until the particle density of the inside air is 40 times that of the outside air. If the temperature inside the tank is the same

  49. Science

    Which of the foolowing occurs when a mass of air rises into the atmosphere? A) it becomes warmer because the particles move closer together B) it becomes cooler because the particles move closer together C) it becomes cooler because the particles move

  50. science

    Blank have vibrating particles that don't have enough energy to move out of position?

  51. science help PLS

    What is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? As air pressure in an area increases, the density of the gas particles in that area decreases. As air pressure in an area increases,

  52. physics

    1. When a colder object is placed in contact with a warmer object, ____________________. a. the particles of matter exchange places b. the particles in the colder object slow down while they cool down the warmer object c. the particles in the warmer object

  53. heat physics

    1. When a colder object is placed in contact with a warmer object, ____________________. a. the particles of matter exchange places b. the particles in the colder object slow down while they cool down the warmer object c. the particles in the warmer object

  54. science help

    What is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? As air pressure in an area increases, the density of the gas particles in that area decreases. As air pressure in an area increases,

  55. Chemistry

    Which of the following are behaviors of a gas that can be explained by the kinetic-molecular theory? a. Gases are compressible. b. Gases exert pressure. c. All particles of a gas sample move at the same speed. d. Gas particles can exchange kinetic energy

  56. science

    How does a hurricane form? * It forms over the warm Atlantic ocean as low pressure area It forms over the warm Atlantic ocean as a high pressure area It forms over the cool Pacific ocean as a low pressure area It forms over the cool Pacific ocean as a high

  57. one more question

    how would you describe change in a arrangement of particles as heat energy and temperature increases. here is my answer: temperature increase makes particles move faster and spread a part Please edit

  58. PHYSICS

    A variable length air column (closed on one end) is placed just below a vibrating wire of mass 5.00g, which is fixed at both ends. The length of the air column is gradually increased from zero until the first position of resonance (first harmonic) is

  59. Physics

    A variable-length air column is placed just below a vibrating wire that is fixed at the both ends. The length of air column open at one end is gradually increased from zero until the first position of resonance is observed at 20 cm. The wire is 115.4 cm

  60. Earth's Dynamic Atmosphere

    Air pressure doesn't crush everything underneath it because A. air pressure is hypothetical and not a real force. B. air pressure is strong enough. C. things on earth have learned to withstand the constant pressure. D. air pressure is exerted in all

  61. Chemistry

    Why during melting, particles gain energy and vibrate more, until they are able to overcome the forces that hold them in their fixed position? Why during boiling, particles gain kinetic energy and move quickly until they can completely break the forced

  62. 8gradescience

    How do helmets protect your head? a.By creating a large area to spread out the pressure of a blow to your head. b.By focusing the pressure of a blow into a small area. c.By creating a vacuum that protects your head. d.By creating a pressure gradient that

  63. Science

    Which is correct about the sun’s energy on the earth’s surface?(1 point) It warms the air masses. It causes the changes in seasons. It is evenly distributed. It makes day and night possible. Which is correct about pressure distribution due to uneven

  64. Science

    Please Check my Work:pls check my work asap! 1. A ___ has a definite shape and a definite volume. (1 point) 1. solid (My Choice) 2. liquid 3. gas 4. molecule 2. Why is a gas able to flow? (1 point) 1. Its particles have melted and can move around. 2. Its

  65. SCIENCE HELP PLS

    The density of gas particles in a section of Earth’s atmosphere decreases. Which of the following is the most likely explanation for this event? The air pressure in that section of Earth’s atmosphere decreased. The air pressure in that section of

  66. physics

    which of the followingfactors dircetly affect the amount of air drag on an object? 1)mass 2)weight 3)air density 4)color 5)object density 6)shape/aerodynamics 7)relative speed between the object and air *8)surface area encountered by air?

  67. physics

    A bird is sitting on a wire 22m long. The wind makes it move, creating a standing wave with 8 loops. What is the wavelength?

  68. physics

    A beam of particles is directed at a 0.016-kg tumor. There are 2.1 x 1010 particles per second reaching the tumor, and the energy of each particle is 5.4 MeV. The RBE for the radiation is 14. Find the biologically equivalent dose given to the tumor in 16

  69. Physics

    A beam of particles is directed at a 0.017-kg tumor. There are 2.4 x 1010 particles per second reaching the tumor, and the energy of each particle is 5.2 MeV. The RBE for the radiation is 14. Find the biologically equivalent dose given to the tumor in 27

  70. CHEMISTRY

    When air pollution is high, ozone (O3) contents can reach 0.60 ppm (ie., .60 mol ozone per million mol air). How many molecules of ozone are present per liter of polluted air if the barometric pressure is 755 mm Hg and the temperature is 79 degrees F? I

  71. physics

    An observer measures the length of an object. In which of the following cases is the measured length at a minimum? Choose one answer. a. The observer and the object move with the same speed v in the same direction. b. The observer and the object move with

  72. physics

    An object of mass 5.00 kg is attached to a spring with a force constant of 300 N/m. It is oscillating on a horizontal frictionless surface with an amplitude of 2.00 m. A 8.00 kg object is dropped vertically on top of the 5.00 kg object as it passes through

  73. Science

    Fill in the blanks...Air masses MOVE from areas of ______ pressure to areas of_________ pressure.

  74. physics

    Q:What happens to the pressure of particles in the container when it is heated.explain. Q:A pressure of 2200Kpa is exerted by the particles in the container on the wall of area 25cm2. find the force exerted by the particle.

  75. social studies

    What happens when moist air within a cloud rises? It evaporates, creating bands of cold air. It evaporates, creating bands of warm air. It condenses and falls as rain or snow. It condenses and falls as a tornado.

  76. PHYSICS TEST !!

    Hi! I have a physics test and need help with a few study questions...if you know which equations to use or how to solve any of these PLEASE tell me...thankyou! 1. One cubic meter of liquid air at standard temperature and pressure is about 900 kg. When this

  77. Physics

    A hanging spring stretches by 30.0 cm when an object of mass 490 g is hung on it at rest. We define its position as x = 0. The object is pulled down an additional 20.0 cm and released from rest to oscillate without friction. What is its position x at a

  78. Physics

    A hanging spring stretches by 30.0 cm when an object of mass 490 g is hung on it at rest. We define its position as x = 0. The object is pulled down an additional 20.0 cm and released from rest to oscillate without friction. What is its position x at a

  79. Physics

    A swimmer has 8.20 x 10^-4 m^3 of air in his lungs when he dives into a lake. Assuming the pressure of the air is 95 percent of the external pressure at all times, what is the volume of the air at a depth of 10.0 m? Assume that the atmospheric pressure at

  80. physics

    Which of the following determine the terminal speed of an object? Choose all that apply. Weight Color Object's density Air density Relative speed between the object and the air Shape/Aerodynamics Surface area encountered by air

  81. Physics

    How fast would a bird move in the air if it were flying with a speed of 50 m/h directly into a strong wind of 50 m/h? a) 50 m/h b) 100 m/h c) 0 m/h* What is the resultant of a 6 N east force pushing on an object and a 8 N force acting on an object at the

  82. Physics

    Which of the following determine the terminal speed of an object? Object's density Color Weight Relative speed between the object and the air Shape/Aerodynamics Air density Surface area encountered by air

  83. Child development

    Infants' naïve theory of physics leads them to believe that a.gravity is not important so floating objects are not unusual. b.one object striking a second object does not affect the second object. c.objects cannot move through other objects. d.objects

  84. Child development

    Infants' naïve theory of physics leads them to believe that A.gravity is not important so floating objects are not unusual. b.one object striking a second object does not affect the second object. c.objects cannot move through other objects. objects move

  85. vapor pressure

    The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 45.0C , the total pressure is 980 mm Hg. The vapor pressure of ethanol

  86. Calc

    A patient receives a 3 ml dose of medicine. The amount, y, of medicine in the body decreases at a rate of 15% per hour (dy/dt=-.15y). When the medicine in the patient is down to 1 ml, the nurse administers a second 3 ml dose and plans to give the patient a

  87. Science (Chemistry)

    The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 45.0C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at

  88. English

    Fill a glass with water. Cover the glass with paper. Turn the glass upside down. The water stays in the glass. 1. The outside air pressure is greater than the inside air pressure. ------------------------------------ This is about a simple science

  89. Science

    1. What term refers to an energy transfer that causes a change in tempeture? Assume that you have just taken a pan of cooies out of the oven and set them on he counter to cool. 2. What term refers to the aveage kinetic energy of the particles of one of the

  90. physics

    What is true about microscopic properties of an object? 1) They are just small versions of the macroscopic properties. 2) They are the properties of particles that make up the object. 3) They are the average of many properties of individual particles. 4)

  91. science

    What vibrating particles don't have enough energy to move out of position?

  92. Physics

    A variable-length air column is placed just below a vibrating wire that is fixed at the both ends. The length of air column open at one end is gradually increased from zero until the first position of resonance is observed at 20 cm. The wire is 115.4 cm

  93. Science

    NO ONE HAS ANSWERED 1. How do microorganisms affect the quality of soil? by breaking down the remains of dead organisms*** by creating tunnels by absorbing water by increasing mechanical weathering 2. How does the C horizon form? Rainwater washes clay and

  94. science

    As you airplane taker off from an airstrip on the ground and rises 30,000 feet into the sky what happens to the air pressure on the outside of the airplane ? Answers are Air pressure decreases Air pressure increases Air pressure stays same more information

  95. physics

    An open ended air column of length 35 cm resonates with a speaker sounding a 500 Hz note. If the air is vibrating in the fundamental mode, what temperature is the air?

  96. grade 11 Physics

    An open ended air column of length 35 cm resonates with a speaker sounding a 500 Hz note. If the air is vibrating in the fundamental mode, what temperature is the air?

  97. physics

    A vibrating 400.0Hz tuning fork is placed in fresh water. What is the frequencyin herbs and the wavelength in meters (A) within the water at 25c (B) when the sound waves move into the air at 25c

  98. physics

    900k,what is the pressure inside a container? I understand that the air pressure is proportional to both the air's density and air temperature, but I'm unsure of the calculation to determine the pressure

  99. Dosage calculations please

    The nurse is to administer the recommended dose of Garamycin 2 mg per kg every 6 hours. The child weighs 42 pounds. 1. What is the weight in kg? 2. what is the daily dose? Round to the nearest whole number. 3. What is the individual dose? 1. 42/2.2 = 19.09

  100. Environmemtal Science

    Need help with Creating an outline of Malathion using Hazard identification, dose-response,exposure and risk characterization

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