1. Physics

    The intensity of an earthquake wave passing through the Earth is measured to be 2.5×106 J/m^2 at a distance of 48 km from the source. What was its intensity when it passed a point only 2.0 km from the source? At what rate did energy pass through an area

    asked by Jake on December 2, 2010
  2. college physics

    The intensity of an earthquake wave passing through the Earth is measured to be 2.5×10^6 J/m^2 at a distance of 43 km from the source. What was its intensity when it passed a point only 2.0 km from the source? AND At what rate did energy pass through an

    asked by Anonymous on April 27, 2010
  3. Science

    The intensity of an earthquake wave passing through the Earth is measured to be 1.5×10^6 J/m^2*s at a distance of 58km from the source. What was its intensity when it passed a point only 2.0 km from the source? At what rate did energy pass through an area

    asked by Chris on January 25, 2013
  4. Physics

    The intensity of a particular earthquake wave is measured to be 5.0 multiplied by 106 J/m2·s at a distance of 55 km from the source. (a) What was the intensity when it passed a point only 3.0 km from the source? (b) What was the rate energy passed through

    asked by Eric on January 31, 2010
  5. earth science...help

    for this question: Put the folloing words together in a few sentence to explain their meaning and relationship to one another: seismic waves, seismograms, seismoghaps, and seismologists. is this answer suitable: Seismic wave is an elastic shock wave that

    asked by Anonymous on January 13, 2009
  6. maths

    The magnitude of an earthquake with intensity I is measured using a seismograph. The intensity I is converted into the Richter scale number using the following formula R=log10I. An earthquake in Town A was measured 3 on the Richter scale, while the

    asked by hemant on May 8, 2013
  7. physics

    Earthquakes are motions of the earth's crust. Essentially, they are big sound waves that travel through the earth. There are two types of waves. The first type is called a longitudinal or P wave, where the earth compresses in the same direction as the wave

    asked by rohit on May 9, 2013
  8. physics

    The intensity of an earthquake wave is measured to be 6 x10 ^6 J ms at a distance of 50 km from its source. Calculate the intensity when it passed the point 4 km to source ? What is the rate energy passed through an area of 6 ms^2 at 4 kW?

    asked by Sandhya on November 30, 2008
  9. Physics

    If an earthquake wave having a wavelength of 13 km caused the ground to vibrate 10 times each minute, what is the speed of the wave? 1.2 km/s 2.2 km/s 220 m/s 22 m/s If the amplitude in a sound wave is doubled, by what factor does the intensity of the wave

    asked by Mookie Turtle on November 5, 2018
  10. math help plz really urgent

    1. The formula M=log I/S determines the magnitude of an earthquake, where I is the intensity of the earthquake and S is the intensity of a “standard earthquake.” How many times stronger is an earthquake with a magnitude of 8 than an earthquake with a

    asked by sammi on January 31, 2017
  11. Physics

    okay for a) I got the answer as 11.67 seconds and did v=d/t and for b) i found that wavelength= 6km. Im confused how the 100 m deep affects the equation for c and d. The 2011 Japan tsunami was triggered by an earthquake 70 km offshore. The earthquake

    asked by Phil on April 18, 2017
  12. AP physics help

    Two identical waves undergo pure constructive interference. How is the resultant intensity related to that of the individual waves? A. resultant intensity is half of wave intensity B. resultant intensity is same as individual wave intensity C. resultant

    asked by tyger2020 on February 15, 2018
  13. physics

    When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 8.0 km/s and the secondary, or S, wave has a speed of about 4.5 km/s. A seismograph, located some distance away,

    asked by Anonymous on December 5, 2014
  14. d

    Calculus help!!Suppose an earthquake is measured with a magnitude of 6 on the Richter scale with an error of at most 2%. Use differentials to find the error in the intensity of the earthquake

    asked by Anonymous on November 7, 2012
  15. College Algebra

    This exercise deals with logarithmic scales. Earthquake A had a magnitude of 8.2 on the Richter scale. At the same time an earthquake B with magnitude 4.8 caused only minor damage. How many times more intense was earthquake A than earthquake B? (Round your

    asked by Melany on August 3, 2015
  16. algebra2

    the April 2015 earthquake in Nepal measured 7.8 in magnitude.in 1988 there was an earthquake in the same area that measured 6.3 on the richter scale. how many times greater was the most recent earthquake than the one in 1988?

    asked by amber on June 1, 2015
  17. physics

    Earthquakes are essentially sound waves—called seismic waves—traveling through the earth. Because the earth is solid, it can support both longitudinal and transverse seismic waves. The speed of longitudinal waves, called P waves, is 7800m/s .

    asked by Kate on April 7, 2014
  18. Physics

    Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal

    asked by Stella on November 22, 2010
  19. physics

    Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal

    asked by Anonymous on November 21, 2008
  20. Physics HELP!!

    Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal

    asked by sarah on November 21, 2012
  21. Physics

    Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal

    asked by Patrick on November 23, 2010
  22. Physics

    Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal

    asked by Mike on November 23, 2010
  23. Physics Waves

    Earthquakes are essentially sound waves traveling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse seismic waves. These travel at different speeds. The speed of longitudinal

    asked by Mike on April 21, 2010
  24. Phsyics Waves

    Earthquakes are essentially sound waves traveling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse seismic waves. These travel at different speeds. The speed of longitudinal

    asked by Michael Moskvich on April 25, 2010
  25. Physics

    Elephants communicate via infrasound, at frequencies as low as 11 Hz that can travel up to 9 km. The intensity of these sounds can reach 106 dB, measured a distance of 4 m from the source. a) Determine the intensity level in W/m2 of the infrasound at 4 m

    asked by Annie on December 3, 2014
  26. Math

    Are the answers correct? The Richter scale is used to measure the intensity of an earthquake. If E, measured in joules, is the energy released during an earthquake, then the magnitude is given by, M = 2/3 log(E/E_0) Where E_0 = 10^4.4 joules 1. If 8 x

    asked by Anonymous on March 12, 2019
  27. Algebra

    Are the answers correct? The Richter scale is used to measure the intensity of an earthquake. If E, measured in joules, is the energy released during an earthquake, then the magnitude is given by, M = 2/3 log(E/E_0) Where E_0 = 10^4.4 joules 1. If 8 x

    asked by Blank on March 11, 2019
  28. physics

    Elephants communicate via infrasound, at frequencies as low as 11 Hz that can travel up to 9 km. The intensity of these sounds can reach 106 dB, measured a distance of 4 m from the source. a) Determine the intensity level in W/m2 of the infrasound at 4 m

    asked by Haley on December 1, 2014
  29. Math (PreCalculus)

    An earthquake was recorded which was 1584893 times more powerful than a reference level zero earthquake. What is the magnitude of this earthquake on the Richter scale? Intensity on the Richter scale is log(I/Io). Correct Answer is 6.268. But how to get

    asked by DROSP on December 4, 2013
  30. science

    how does a magnitude-8.0 earthquake could be classified as a low-intensity earthquake? LAST SCIENCE QUESTION!

    asked by Sara on April 1, 2009
  31. math

    by what approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake with magnitude5.3?

    asked by austin on May 14, 2016
  32. Math

    An earthquake was recorded which was 1584893 times more powerful than a reference level zero earthquake. What is the magnitude of this earthquake on the Richter scale? Intensity on the Richter scale is log(I/Io).

    asked by DROSP on December 4, 2013
  33. earth science

    how can a magnitude 8.0 earthquake be classified as a low intensity earthquake?

    asked by Olivia on November 25, 2019
  34. Geology

    If the earthquake in Forks,WA is ranked 7.1 M, list the modified mecalli intensity ranking and explain the expected damage associated with this magnitude of an earthquake. Please help ASAP!!! :(

    asked by Andrea on March 17, 2019
  35. Math Exponetial Function Problem Question?

    Im confused if im doing this right Last week there was an earthquake that measured as a magnitude of 3.2 on the Richter scale. Today you hear on the radio that there was a second earthquake that was 27 times more intense than the first. What was the

    asked by Chris on January 2, 2016
  36. physics

    A sound wave with intensity 37 mW/m2 interferes constructively with a sound wave that has an intensity of 18 mW/m2. What is the intensity of the superposition of the two?

    asked by opp on April 10, 2012
  37. physics

    n object is dropped from rest from a height 5.8 × 106 m above the surface of the earth. If there is no air resistance, what is its speed when it strikes the earth? The acceleration of gravity is 9.81 m/s2 and the radius of the Earth is 6.37 × 106 m.

    asked by donna on April 5, 2011
  38. Physics

    The speed of longitudinal waves, called P waves, is 7274.0 m/s. Transverse waves, called S waves, travel at a slower 3803.0 m/s. A seismograph records the two waves from a distant earthquake. If the S wave arrives 4.47 min after the P wave, how far away

    asked by Pete on November 23, 2010
  39. physics please help!!

    A distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding from the earth at a relative speed of uG = 1.90 106 m/s. Relative to the center, the tangential speed is vT = 3.00 105 m/s for

    asked by linds on March 27, 2012
  40. Physics: Earthquakes

    I'm studying for an upcoming exam and I came across this problem: 10 seconds separate the P- and S-wave arrival times of an earthquake which shakes you 1m. How far away is the earthquake epicenter and what is the magnitude? I'm stuck and would really

    asked by Student on April 28, 2014
  41. physics please help!!

    A distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding from the earth at a relative speed of uG = 1.90 106 m/s. Relative to the center, the tangential speed is vT = 3.00 105 m/s for

    asked by linds on March 27, 2012
  42. College Physics

    A radio station with a power of 20 kW sends out an omnidirectional wave at 1.25 MHz. a. If the electromagnetic wave has an electric field of 0.22 V/m, what is the magnetic field amplitude? b. What is the intensity of the wave at 5 km? c. What is the

    asked by charlie on April 4, 2012
  43. Earth Science

    To measure the strength of an earthquake, you can use either a______scale or______scale. A)Richter B)seismograph C)mercalli intensity part:2 A)moment magnitude B)seismogram C)mercalli intensity

    asked by george on December 7, 2009
  44. physics

    A satellite is in a circular orbit around the Earth at an altitude of 3.30 106 m. (a) Find the period of the orbit. (Hint: Modify Kepler's third law so it is suitable for objects orbiting the Earth rather than the Sun. The radius of the Earth is 6.38 106

    asked by alba on February 22, 2015
  45. College Alg

    The intensity I of an x-ray after it has passed through a material that is x centimeters thick is given by I = I0e^–kx, where I0 is the initial intensity of the x-ray and k is a number that depends on the material. The constant k for copper is 3.2. Find

    asked by Dale on November 6, 2016
  46. science

    Isaac and Joe worked together to draw a model of a transverse wave. Issac used the model to measure the distance between two crests. Joe said, "Good job measuring the wave's amplitude!" Why might Isaac have been confused by Joe's statement? A. Isaac

    asked by Pleaseee help Science on November 24, 2019
  47. Meteorology/ Natural Hazards

    Determine the epicenter of an earthquake from the seismographic data below: Time of wave arrival p wave s wave San Francisco 13:03:21 13:06:04 Dallas 12:04:34 12:05:59 New York City 12:24:54 12:29:50 P wave Speed 5.5 km/sec S wave Speed 3.5 km/sec where Z

    asked by Nicole on August 28, 2013
  48. physics

    The intensity of a certain sound wave is 6 ì W.cm2. if its intensity is raised by 20 decibels, the new intensity (in ìW/cm2) is : a. 60 b. 6.6 c. 6.06 d. 600 E. 12

    asked by khaled fayek on July 24, 2015
  49. Math - Proportion

    The acoustic intensity, I, of a sound wave is proportional to the square of the pressure amplitude, P, and inversely proportional to the velocity, v, of the wave. a) what is the proportionality relationship? b) what happens to the intensity if both the

    asked by Kiirsty on May 13, 2014
  50. Math

    Logrithmetic Problem question Last week there was an earthquake that measured as a magnitude of 3.2 on the Richter scale. Today you hear on the radio that there was a second earthquake that was 27 times more intense than the first. What was the magnitude

    asked by Chris on January 1, 2016
  51. EARTH SCIENCE- SO STUCK

    How far from an earthquake epicenter is a city where the difference between the P-wave and the S-wave arrival times is 5 minutes and 00 seconds?

    asked by andra on January 28, 2014
  52. Physics

    Three polarizers are placed in succession with their axes of polarization as follows: P1 vertical, P2 at angle theta to the vertical, and P3 at 90 degrees to the vertical. Unpolarized light of intensity I.0 is incident on the first polarizer. The final

    asked by steve on December 15, 2018
  53. UNIVERSITY

    a sound wave has a beta that is 10 dB, calculate the intensity of the sound wave in units of international standards and the amplitude of the pressure wave

    asked by rosa on May 4, 2014
  54. physics

    It is the year 2305 and the tallest structure in the world has an insane height of 3.19×106 m above the surface of the Earth. A pendulum clock that keeps perfect time on the surface of the Earth is placed at the top of the tower. How long does the clock

    asked by gino intili on February 24, 2011
  55. physics

    It is the year 2305 and the tallest structure in the world has an insane height of 3.19×106 m above the surface of the Earth. A pendulum clock that keeps perfect time on the surface of the Earth is placed at the top of the tower. How long does the clock

    asked by caila on February 24, 2011
  56. geology

    a ____ wave is an elastic rebound wave that travels outward in all directions from the point of an earthquake? I'm debating between, seismic, body and surface which one is correct? Thanks

    asked by Anonymous on August 7, 2011
  57. physics

    Hello I'm having trouble with this physics question: You are examining the loss in intensity as light passes through a fibre optic cable. The input intensity is measured as 55.1 W/m2 and the output intensity as 28.7 W/m2. Calculate the attenuation of the

    asked by diana on November 15, 2015
  58. Physics

    The intensity of sunlight at the the top of the Earth's atmosphere is about 1350 W/m2. (The intensity at the surface of the Earth is somewhat smaller due to absorption and reflection by the atmosphere.) What is the total power emitted by the Sun?

    asked by Sierra on July 31, 2012
  59. Physics circular motion

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a

    asked by Gina on February 15, 2011
  60. physics

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a

    asked by heather on February 23, 2011
  61. physics??

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a

    asked by Gina on February 14, 2011
  62. Math - Working with Logs!!

    On September 26 2001, an earthquake in North Bay measured 5.0 on the Ritcher scale. What is the magnitude of an earthquake 3 times as intense as North Bay's earthquake? I would post my answer, but in text, it's just confusing and I can't post picture links

    asked by Anonymous on December 11, 2007
  63. Math

    Im wondering for this question if I'm right and going toward the right direction. Last week there was an earthquake that measured as a magnitude of 3.2 on the Richter scale. Today you hear on the radio that there was a second earthquake that was 27 times

    asked by Matt on January 2, 2016
  64. Physics

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration

    asked by Zach on March 3, 2008
  65. physics

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the speed and centripetal

    asked by brandan on July 1, 2013
  66. Physics

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration

    asked by Don on November 6, 2012
  67. Physics

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration

    asked by Don on November 6, 2012
  68. Physics

    The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. (a) Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed of a person situated at

    asked by Ryan on September 30, 2016
  69. physics

    A wave is represented by the equation y=0.5 sin 0.4x(x-60t) there the distance x is measured in can and time(t) second what is the wave length of the wave?

    asked by Anonymous on October 9, 2019
  70. physics

    An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.7 x 10^-6 T. What is the intensity S of the wave?

    asked by Sarah on March 26, 2012
  71. math

    after passing therough a material t centimeters thick, the intensity I(t) of a light beam is given by I(t) =(4^-ct)Io, where Io is the initial intensity and c is a constant called the absorption factor. Ocean water absorbs light with an absorption factor

    asked by Suzie on February 24, 2012
  72. Easy physics...having trouble with part b

    Moon effect. Some people believe that the Moon controls their activities. If the Moon moves from being directly on the opposite side of Earth from you to being directly overhead, by what percentage does (a) the Moon's gravitational pull on you increase and

    asked by Rodrick on May 2, 2014
  73. Science

    To locate the epicenter of an earthquake a seismologist must determine all of the following except add the difference between arrival time is the PNS waves seismographic dad up from the side seismograph location distance from the epicenter to at least

    asked by Me on January 29, 2019
  74. Earth Science(Please help)

    How much more energy is released in a 5.0 magnitude earthquake than a 4.0 magnitude earthquake? I know that a tenfold increase in wave amplitude equals an increase of 1 on the scale so 1 to 2 = 10times so does that mean that 2 to 3 would be 10 more times?

    asked by Janet on February 28, 2010
  75. Earth Science

    How much more energy is released in a 5.0 magnitude earthquake than a 4.0 magnitude earthquake? I know that a tenfold increase in wave amplitude equals an increase of 1 on the scale so 1 to 2 = 10times so does that mean that 2 to 3 would be 10 more times?

    asked by Janet on February 28, 2010
  76. Math

    Find the decibel intensity level at a rock concert if the intensity was measured at 3.98x10^-3

    asked by Mike on January 24, 2013
  77. physics

    A faint sound with an intensity of 10 -9 W/m2 is measured by an intensity-level meter. What will the reading be in dB?

    asked by jeremy on May 26, 2013
  78. earth science

    Which of the following statements is TRUE? S-waves are able to pass through the Earth's core. Continental-continental plate convergence is reponsible for the creation of mountain ranges. Oceanic crust is on average about 60 - 100 km thick. The Richter

    asked by Deborah on October 10, 2008
  79. science

    what is a earthquake look it up in a dictionary science is hard but hang in there If you want to read about earthquakes, an encyclopedia can give much information. Look on plate tectonics. The core of the earth is very hot and consists of molten magma.

    asked by angel on October 10, 2006
  80. Algebra 2

    PLEASE HELP-DUE APRIL 5TH, 2011!!!! EARTHQUAKES an earthquake rated at 3.5 on the Richter scale is felt by many people, and an earthquake rated at 4.5 may cause local damage. The Richter scale magnitude reading m is given by m = log (base 10) x, where x

    asked by Lindsey on March 27, 2011
  81. Science

    Earthquakes and Seismic Waves •If the statement is true right true if the statement is false change the underlined word or words(I’ll put them in parentheses) to make this statement true.• 1.______The shaking and trembling that results for movement

    asked by Molly on February 8, 2018
  82. Science

    locate the epicenter of an earthquake a seismologists must determine all of the following except ? a) the difference between arrival time of P and S waves b) seismographic locations data from the seismograph locations c) the distance from the epicenter to

    asked by Queen/Halle on April 12, 2016
  83. science

    To locate the epicenter of an earthquake a seismologists must determine all of the following except ? a) the difference between arrival time of P and S waves b) seismographic locations data from the seismograph locations c) the distance from the epicenter

    asked by victoria on February 18, 2014
  84. physics

    2)A wave is represented by the equation y =2sin.pi(0.5x - 200t) where all distance are measured in centimeters and time in seconds. For this wave, calculate the : (a) frequency (b) wave length (c) speed (d) amplitude step plz

    asked by tayopo on January 2, 2017
  85. physics!

    In its search for flying insects, a bat uses an echolocating system based on pulses of high frequency sound. These pulses are 2.0 ms in duration, have a frequency of 50 kHz, and an intensity level of 100 dB at 1.0 m from the bat’s mouth. Assume the bat

    asked by Jamie on April 16, 2016
  86. PHYSICS!!

    In its search for flying insects, a bat uses an echolocating system based on pulses of high frequency sound. These pulses are 2.0 ms in duration, have a frequency of 50 kHz, and an intensity level of 100 dB at 1.0 m from the bat’s mouth. Assume the bat

    asked by Ben on April 13, 2016
  87. Physics

    Some people believe that the Moon controls their activities. The Moon moves from being directly on the opposite side of Earth from you to be being directly overhead. Assume that the Earth-Moon (center-to-center) distance is 3.82 multiplied by 108 m and

    asked by Ray on November 9, 2009
  88. Physics

    The amplitude of a sinusoidal sound wave is quadrupled. a) By which factor is its intensity multiplied? b)By how many decibels does the sound intensity level increase?

    asked by Anonymous on February 18, 2018
  89. physics - sound level

    The source of a sound wave has a power of 2.50 µW. Assume it is a point source. (a) What is the intensity 6.70 m away? I used I = Power / 4*pi*r^2 and found I to be 4.43x10^-9 W/m^2 (b) What is the sound level at that distance? Sound level = 10 dB*log

    asked by COFFEE on April 21, 2007
  90. algebra 2

    THe loudness L of a sound is measured by L=10 log10^R where R is the sound's relative intensity. One person talks with a relative intensity of 10^6 or 60 decibels. How much louder would 100 people be ,talking with the same intensity. So would I just use L=

    asked by lexi on April 19, 2017
  91. physics

    For an ocean wave that has the crests 6 m apart and passing a boat every two seconds, calculate the speed of the wave.

    asked by sam on January 22, 2016
  92. PHYSICS

    A wave on a string is described by the relation y = A sin(30t - 0.041x), where t is measured in seconds and x in meters, with A = 0.16 m. (a)Find the frequency of the wave. ____Hz (b)Find the wavelength of the wave. ___m (c)Find the speed of the wave.

    asked by Aaron on December 5, 2012
  93. Physics

    The average intensity of sunlight at earth's surface is approximately 1400 W/m^2 , if the Sun is directly overhead. The average distance between the earth and the sun is 1.50E11 m. What is the average power emitted by the Sun? Ok so intensity is power over

    asked by Raquel on November 15, 2011
  94. Physics

    The mass of a string is 6 grams, and it is stretched so that its tension is 150 N. A transverse wave travelling on this string has a frequency of 160 Hz and a wavelength of 0.40 m. What is the length of this string? (ii) A chain saw has a measured sound

    asked by Orla on April 6, 2016
  95. science

    explain how an magnitude of 8.0 earthquake could be classified as a low intensity

    asked by Anonymous on February 13, 2011
  96. math

    An earthquake has a magnitude of 6.7 on the Richter Scale.Find the intensity.

    asked by Earthquakes on December 3, 2011
  97. math

    The mean radius of the Earth is 6.37 x 106 meters (m). Assuming the earth can be modeled as a perfect sphere a. In cubic meters (m3 ) what is the volume of the Earth? b. In meters (m) what is Earth’s circumference? c. If the mean density is 5.515g/cm3,

    asked by Rocio Aguilera on February 21, 2011
  98. Math

    The speed of an ocean wave is measured by an oceanographer.the wave travels 30 meters in 10 seconds. How many meters will the wave travel in 2 minutes

    asked by Anonymous on January 31, 2014
  99. Calculus

    An oceanographer measured an ocean wave during a storm. The vertical displacement, h, of the wave, in metres, can be modelled by h(t) = 0.8cost + 0.5sin2t, where t is the time in seconds. a) Determine the vertical displacement of the wave when the velocity

    asked by Omat on June 24, 2018
  100. scientist

    In 1976 a powerful earthquake hit the city of Tangshan, China. Scientists had failed to predict the earthquake. If people had paid attention to the unusual animal behavior that preceded the earthquake, however, they would have known it was coming. Animals

    asked by Anonymous on September 4, 2009