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May 25, 2013

Search: The intensity of an earthquake wave passing through the Earth is measured to be 2.0×106 J/m^2\cdot s at a distance of 58 km from the source

Number of results: 4,049

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 of 3.0 m^2 at 2...
Friday, January 25, 2013 at 1:16pm by Chris

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 of 3.0 m^2 at 2.0...
Thursday, December 2, 2010 at 10:07pm by Jake

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 area of 4.0 m^2 ...
Tuesday, April 27, 2010 at 10:33am by Anonymous

Physics
Earthquake wave attenuation depends upon the wave type. They are also attenuated by heating. Some propagate along the surface and some do not go through water. The intensity does not in general follow an inverse square law reduction in intensity. This is an ill-advised ...
Sunday, January 31, 2010 at 9:27pm by drwls

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 travels through the ...
Tuesday, January 13, 2009 at 10:05pm by Anonymous

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 earthquake in Town B ...
Wednesday, May 8, 2013 at 8:38pm by hemant

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?
Sunday, November 30, 2008 at 9:18am by Sandhya

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 an area of 7.0...
Sunday, January 31, 2010 at 9:27pm by Eric

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?
Tuesday, April 10, 2012 at 11:03pm by opp

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 travels. The ...
Thursday, May 9, 2013 at 2:55am by rohit

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 was the earthquake?
Tuesday, November 23, 2010 at 12:41pm by Pete

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
Wednesday, November 7, 2012 at 5:24pm by Anonymous

science
how does a magnitude-8.0 earthquake could be classified as a low-intensity earthquake? LAST SCIENCE QUESTION!
Wednesday, April 1, 2009 at 5:44pm by Sara

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 wavelength of the ...
Wednesday, April 4, 2012 at 9:25pm by charlie

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
Monday, December 7, 2009 at 11:21pm by george

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?
Monday, March 26, 2012 at 5:40pm by Sarah

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 of c= .0101. at what ...
Friday, February 24, 2012 at 5:47pm by Suzie

science
Please try some of the following links: http://search.yahoo.com/search?fr=mcafee&p=how+an+magnitude+of+8.0+earthquake+could+be+classified+as+a+low+intensity+ Sra
Sunday, February 13, 2011 at 8:40pm by SraJMcGin

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
Sunday, August 7, 2011 at 3:15pm by Anonymous

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 [(Intensity)/(...
Saturday, April 21, 2007 at 12:54am by COFFEE

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 represents the ...
Sunday, March 27, 2011 at 2:46pm by Lindsey

Science
If the energy carried by a sound wave is multiplied by a thousand, by what factor does the intensity of the sound wave increase?
Tuesday, January 13, 2009 at 9:19pm by Lili

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?
Sunday, February 28, 2010 at 2:19pm by Janet

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?
Sunday, February 28, 2010 at 3:17pm by Janet

math
An earthquake has a magnitude of 6.7 on the Richter Scale.Find the intensity.
Saturday, December 3, 2011 at 5:22pm by Earthquakes

science
explain how an magnitude of 8.0 earthquake could be classified as a low intensity
Sunday, February 13, 2011 at 8:40pm by Anonymous

Physics
a) A microphone has an area of 5cm^2. It recieves during a 4.0 s time period a sound energy of 2.0*10^-11 J. What is the intensity of the sound? b) using intensity from a) what is the variation in pressure in the sound wave, delta P ? Use T=293 K and density of air=1.2kg/m^3
Sunday, February 21, 2010 at 8:45pm by Dean

Science
Which type of seismic wave causes rock particles to move in the same direction as the wave movement? a. P-wave b. S-wave c. tension wave d. shear wave
Tuesday, March 10, 2009 at 8:11pm by Angie

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 waves, called P waves, is...
Wednesday, April 21, 2010 at 6:31pm by Mike

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 waves, called P waves, is ...
Tuesday, November 23, 2010 at 4:46pm by Mike

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 waves, called P waves, is ...
Tuesday, November 23, 2010 at 1:29am by Patrick

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 waves, called P waves, is ...
Monday, November 22, 2010 at 12:50pm by Stella

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 waves, called P waves, is ...
Friday, November 21, 2008 at 7:42pm by Anonymous

physics
A skipper on a boat notices wave crests passing his anchor chain every 9 s. He estimates the distance between wave crests to be 15 m. He also correctly estimates the speed of the waves. What is this speed? Wavelenght* frequency= wave speed remember that frequency here is 1wave...
Sunday, November 5, 2006 at 7:37pm by Barry

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 waves, called P waves, is ...
Sunday, April 25, 2010 at 5:25pm by Michael Moskvich

Physics
1) A microphone has an area of 6.7 cm2. It receives during a 4.62 s time period a sound energy of 2.5x10-11 J. What is the intensity of the sound? 2) Using the intensity in the previous question, what is the variation of pressure in the sound wave if the speed of sound is 343...
Monday, November 22, 2010 at 12:32pm by Bala

Physics
1) A microphone has an area of 6.7 cm2. It receives during a 4.62 s time period a sound energy of 2.5x10-11 J. What is the intensity of the sound? 2) Using the intensity in the previous question, what is the variation of pressure in the sound wave if the speed of sound is 343 ...
Monday, November 22, 2010 at 11:23am by Bala

Physics
1) A microphone has an area of 6.7 cm2. It receives during a 4.62 s time period a sound energy of 2.5x10-11 J. What is the intensity of the sound? 2) Using the intensity in the previous question, what is the variation of pressure in the sound wave if the speed of sound is 343 ...
Monday, November 22, 2010 at 4:27am by Bala

Alegbra
11. What, to the nearest tenth, will an earthquake measure on the Richter scale if it has an intensity of I = 43, 512,000 I 0?
Sunday, August 1, 2010 at 9:45am by Jessica

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 waves, called P waves, is ...
Wednesday, November 21, 2012 at 11:39am by sarah

science
well, to find an epicenter, first you have to measure the distance between the first P wave and the first S wave. So, that's how you have to use seismic waves to determine an earthquake's epicenter.
Wednesday, April 1, 2009 at 5:26pm by Angie

College Math
Add up these probabilities: 2 running (5 passing) 1 passing (7 running) 1 running (7 passing) 0 running (8 passing) 0 passing (8 running) and subtract the total from 1. The probability of 0 passing plays is (15/26)^8 = 0.01227 You do the others
Tuesday, March 3, 2009 at 6:28pm by drwls

Physic
Covert 110 dB to sound wave energy per area. The ear will be 31 times farther from the speaker than the edge of the stage. This will reduce the intensity of the sound by a factor of 31^2, or about 1000. Then multiply that intensity by 1 second and the area of the eardrum.
Saturday, November 7, 2009 at 10:48pm by drwls

physics ..PLEASE HELP ASSIGN DUE SOON :(
A microphone has an area of 3.0cm^2. It receives during a 6.00s time period a sound energy of 1.0x10-11J. What is the intensity of the sound? b). Using the intensity in the previous question, what is the variation of pressure in the sound wave if the speed of sound is 343m/s ...
Saturday, November 24, 2012 at 11:51am by sarah

physics
please help with either or both 1. a charge of 10C is passing in 2 second through a cross sectional area of a conductor. calculate the intensity of magnetic field at a distance of 10 cm from the conductor. 2. An amount of 3X10^20 electrons is passing in a conductor in 2 ms. ...
Wednesday, April 22, 2009 at 6:37pm by jaden

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 can often sense an ...
Friday, September 4, 2009 at 9:49pm by Anonymous

physics
A wave on a string has a wave function given by y(x, t) = (0.0210 m)sin[(6.91 m^−1)x + (2.38 s^−1)t . (a) What is the amplitude of the wave? (b) What is the period of the wave? (c) What is the wavelength of the wave? (d) What is the speed of the wave?
Thursday, July 19, 2012 at 9:30pm by lanre

english critical th.
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 can often sense an ...
Wednesday, March 19, 2008 at 11:00pm by Anonymous

Math - Logorithms
The intensity, I, of light, in lumens, passing through the glass of a pair of sunglasses if given by the equation I(x) = I^o(0.8)^x, where x is the thickness of the glass, in millimeters, and I^o is the intensity of light entering the glasses. How thick should the glass be so ...
Sunday, June 10, 2012 at 9:31pm by Labz

Physics
Your stereo is set to a sound intensity level (SIL) of 60 dB. I'd like to know what this means in terms of energy flow: what is the intensity of the sound wave this produces? Compute your answer in W/m2, but do not enter units. So in my problem it would be 1,000,000 OR 10 ...
Thursday, March 3, 2011 at 10:27pm by Student in Need

Math - Working with Logs!!
In 1935 C.F. Richter set up the scale of earthquakes by R = log(I) where R is the Richter scale number and I is the intensity of the earthquake so from your data 5 = log(I) I = 10^5 so an earthquake 3 times as intense would be 3I so multiplying the above equation by 3 3I = 3(...
Tuesday, December 11, 2007 at 10:30pm by Reiny

Physics
radius = 3*10^-2 meters calculate surface area 4 pi r^2 Intensity of visible = .05 * 75 / surface area I = Emax Bmax /(2 uo) = (Emax)^2/(2 uo c) I am sure this is in your Physics book!!! Look up intensity of electromagnetic wave and "Poynting vector".
Monday, March 31, 2008 at 7:10pm by Damon

math30
The 1933 earthquake in Japan registered 8.9 on the Richter scale. a.The 1985 earthquake in Peru registered 7.7 on the Richter scale. How many more times intense was the earthquake in Japan? Round your answer to one decimal place. b. What would the Richter scale reading be of ...
Wednesday, July 11, 2012 at 12:48pm by alejandro

college physics
Use the inverse square law. "intensity" is the total energy in the seismic wave per unit area. 2 km is 43/2 = 21.5 times closer than 43 km. Intensity will increase by a factor 21.5^2 = 462. (That's where the inverse-square law comes in). The intensity at 2 km is ...
Tuesday, April 27, 2010 at 10:33am by drwls

sicence
Where a major earthquake has happened in the past, but not in a while, is called a seismic a)gap b)wave C)fault d)scale
Tuesday, December 1, 2009 at 7:24pm by george

math
What is the magnitude on the Richter Scale of an earthquake measuring 3.7 x 10^5 i(sub 0)? How many times more intense is a Richter 5 earthquake than a Richter 2.5 earthquake?
Saturday, November 12, 2011 at 10:04pm by Nabil

physics
In the double-slit experiment, consider the point at the middle of the final (detector) screen which is equidistant from the two slits. Suppose the intensity at that point is when either slit is open. Now for each of the three cases (a) bullet (b) wave (c) quantum mechanics (...
Tuesday, February 12, 2013 at 1:44pm by unknown

Earth Science
Where a major earthquake has happened in the past, but not in a while, is called a seismic? a)gap b)wave c)fault d)scale
Monday, December 7, 2009 at 3:52pm by george

Physics
If the amplitude of a sound wave is quadrupled, by what factor will the intensity increase?
Thursday, February 17, 2011 at 6:27pm by Student in Need

science
Please help with this as I can not understand it at all. Imagine you've been shown a seismogram from an earthquake on which you can see the first arrival of P waves, followed some time later by the first arrival of S waves. You work out that the S wave arrived 5 minutes ...
Friday, November 4, 2011 at 9:14am by Paula

Physics
We can reasonaly model a 75 W incandescent lightbulb as a sphere 6 cm in diameter. Typically, only about 5% of the energy goes to visible light; the rest goes largely to nonvisible infrared radiation. (a) What is the visible light intensity (in W/m^2) at the surface of the ...
Monday, March 31, 2008 at 7:10pm by J

physics
In a given electromagnetic plane wave the maximumelectric field strength is 400 V/m. What is the maximum magnetic field strength? How does the energy stored in the magnetic field compare with the energy stored in the electric field at any given time? how do you calculate the ...
Tuesday, December 9, 2008 at 12:24pm by al

Word problem 2
The 1985 Mexico city earthquake had a magnitude of 8.1 on the Richter scale. The 1976 earthquake in Tangshan, China was 1.26 times and intense. What was the magnitude of the Tangshan earthquake. Thanks
Wednesday, February 14, 2007 at 9:42am by Jen

quatum mechanics
In the double-slit experiment, consider the point at the middle of the final (detector) screen which is equidistant from the two slits. Suppose the intensity at that point is when either slit is open. Now for each of the three cases (a) bullet (b) wave (c) quantum mechanics (...
Saturday, February 16, 2013 at 3:15am by preshy

science
An earthquake occurs far from an observing station and produces P, S, and surface waves. Do all the wave arrive at the same time? If not, which arrives first and which last?
Monday, November 14, 2011 at 1:05am by Shirley

Science
An earthquake occurs far from an observing station and produces P, S, and surface waves. Do all the wave arrive at the same time? If not, which arrives first and which last?
Monday, November 14, 2011 at 1:00am by Shirley

chemistry
Is this an electromagnetic wave, a water wave, or some other kind of wave? I assume you mean it is an EM wave. E = hc/wavelength
Monday, November 22, 2010 at 6:04pm by DrBob222

Seismology
Read widely. Take good notes. Seimic Waves and Earth's Interior http://eqseis.geosc.psu.edu/~cammon/HTML/Classes/IntroQuakes/Notes/waves_and_interior.html At farther distances the amplitude of the seismic waves decreases as the energy released by the earthquake spreads ...
Monday, September 5, 2011 at 6:07am by Writeacher

physics
http://www.chegg.com/homework-help/questions-and-answers/sound-passing-perpendicularly-open-window-dimensions-11-m-x-075-m-sound-intensity-level-98-q3307578
Sunday, January 13, 2013 at 3:32pm by Elena

Physical science
A wave travels along a string at a speed of 1,5m 1s.if the frequency of the source of the wave is 7,5hz,calculate:(a)the wavelength of the wave..(b)the period of the wave
Wednesday, April 18, 2012 at 2:52pm by Brydley

physics
A longitudinal wave spreads radially from a source with power 345 W. What is the intensity 40.0 meters away? answer in W/m^2.
Monday, April 4, 2011 at 6:09pm by sabeen

music
How does frequency, amplitude, and wave shape affect the pitch, intensity, and quality of notes produced by musical instruments.
Thursday, April 24, 2008 at 11:10pm by Sue

Science
Which scale measures the amount of damage after an earthquake? Richter scale Mercalli intensity scale moment magnitude scale seismograph scale
Monday, December 7, 2009 at 5:13pm by george

physics
A bell is rung at a sound intensity of 70dB . A trumpet is blown at an intensity that is greater by a factor of 10^3. What is the intensity level of the trumpet
Sunday, May 20, 2012 at 9:42pm by Melissa

Physics
Two waves are combined to form this standing wave equation of y(x,t) = (3 mm)sin[x/(2 m]cos[(100 rad/s)t] a. What's the amplitude of the right moving wave and left moving wave? b. What's the wavelength of the right moving wave and left moving wave? c. What's the ...
Friday, February 11, 2011 at 6:00pm by Alan

Physics
Two waves are combined to form this standing wave equation of y(x,t) = (3 mm)sin[x/(2 m]cos[(100 rad/s)t] a. What's the amplitude of the right moving wave and left moving wave? b. What's the wavelength of the right moving wave and left moving wave? c. What's the ...
Friday, February 11, 2011 at 12:27am by Dan

Physics
The following wave function represents a travelling wave: y = 5.35 / [4.95 + (6.55x+2.15 t )2] where y and x are in cm, and t is in seconds.a) What is the maximum displacement of the wave at t = 4.30 s ? b)What is the wave velocity?
Tuesday, January 11, 2011 at 11:58am by Rody

Physics
The wave is travelling to the right at 50.0 m/s. What is the amplitude if the maximum displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m. 2) What is the wavelength of the wave? 3)What is the frequency of the wave?
Tuesday, November 23, 2010 at 12:46am by Patrick

Science
When a sound wave passes from air into a solid object, which of the following wave properties change? -frequency -wave speed -amplitude -wave length Can be more than one
Thursday, November 10, 2011 at 7:17pm by Logan

Science
P: If wave a has an amplitude of 3 meters then inteferes wiht wave b that has an amplitude of 2 meters. the sum of te waves produce wave c with 5 meters Q:what is the wave interaction explain? P<S: I really want to know what are the 4 basic types of wave interections. ...
Sunday, October 3, 2010 at 1:30pm by Jacytiopa

arithmetic
Your teacher probably wants 3^2 or 9 times. It depends on the unit of measure you are using for "as strong"...power intensity, Electric field intensity, Magnetic Field intensity. And, there are logrithmic measures for all of these two. But if you consider just energy...
Sunday, April 3, 2011 at 2:47pm by bobpursley

physics
The following wave function represents a travelling wave: y = 3.45 / [6.35 + (6.35x−8.30 t )2] where y and x are in cm, and t is in seconds. a). What is the maximum displacement of the wave at t = 7.50 s ? b). what is the wave velocity? please explain more
Monday, January 10, 2011 at 12:34am by mike

physics
The following wave function represents a travelling wave: y = 3.45 / [6.35 + (6.35x−8.30 t )2] where y and x are in cm, and t is in seconds. a). What is the maximum displacement of the wave at t = 7.50 s ? b). what is the wave velocity? please explain more
Monday, January 10, 2011 at 12:34am by mike

Precalc
Can someone please help me? I don't know how to solve for time under 23 units. When I try I think I get the answer for above 23 units and when I try to subtract from the whole period my answer is wrong. The correct answer is 5.1337 hours. Fidel is measuring the light ...
Friday, August 19, 2011 at 2:22am by Rose

physics repost
Calculate the sound level in decibels of a sound wave that has an intensity of 2.25 µW/m2. F
Saturday, April 19, 2008 at 8:12pm by chris adison

Geology
I am totally confused, need to come up with the Arrival Time of P Wave, S Wave Love Wave and Rayleigh Wave and distance from epicenter for LA and Austin when I am only supplied with the following info for Urbana: 3400 miles from Epicenter P Wave arrive 05:44:00 S wave arrive ...
Monday, June 27, 2011 at 10:59am by Carlene

Disaster planning
You must be go to that place where Earthquake affect many year. You must be know some rules of Earthquake. Earthquake is such type of disaster that have no alarming system. We have some but it was not enough. We can alarm before few second.
Sunday, June 1, 2008 at 1:36pm by syadur

science
A _____________________ is an earthquake that occurs after a large earthquake in the same area
Thursday, February 28, 2008 at 6:29pm by Julia

Physics HELP!!
The wave is travelling to the right at 18.2m/s. What is the amplitude if the maximum displacement is 19.9cm and the total distance travelled by the wave is 41.2m? b) What is the wavelength of the wave? c).What is the frequency of the wave?
Saturday, November 24, 2012 at 1:55pm by joane

physics
The figure below represents a periodic wave. Each increment on the equilibrium line is 760 cm. What is the wavelength for this wave (in m)?If the wave in the figure above has a frequency of 60 Hz, what is the wave's speed?
Monday, May 2, 2011 at 8:38pm by Joan

Science
If a earthquake startes at 9:07p.m. and ends at 9:12p.m. what is the distance the earthquake travel?
Monday, May 3, 2010 at 9:41pm by Elijah Pingleton

Science
If a tsunami develops during an underwater earthquake, what will most likely occur? a. deep-ocean sediments will travel great distances. b. no destruction will occur near the origin of the earthquake. c. the magnitude of the earthquake will determine the direction of the ...
Tuesday, March 17, 2009 at 8:29pm by Angie

Physics(Please help)
The intensity (in W/m2) of one sound is 4.83 times as great as the intensity of another sound. Relative to the quieter sound, what is the intensity level â of the louder sound? I am not sure how to start this. Thank you.
Thursday, June 21, 2012 at 6:47pm by Hannah

science
Which seismic wave arrives first at a seismograph station?Which arrives last? Which seismic waves cause most of the damage during an earthquake?
Wednesday, April 1, 2009 at 4:49pm by Sara

science
You have six waves passing and the distance between each wave is 12m. So, 5 x 12= 60m. Therefore, the speed is 60 m/s
Sunday, February 6, 2011 at 5:15pm by Anonymous

Applied maths
2. When light passes through a transparent medium, its intensity I at a depth d can be modelled using the equation where I0 is the initial intensity, and k is a constant. If the intensity of sunlight is reduced to 54% of its original value after penetrating through a depth of...
Wednesday, February 13, 2013 at 7:09pm by DAVID

Physics
A fan at a rock concert is 45.0 m from the stage, and at this point the sound intensity level is 108 dB. Sound is detected when a sound wave causes the tympanic membrane (the eardrum) to vibrate . Typically, the diameter of this membrane is about 8.40 m in humans I solved for ...
Friday, May 4, 2012 at 9:37pm by Kyle

Science
I need to find info. about earthquakes, such as what causes them..what are the consequences of earthquake..definition of earthquake...etc. Thank you
Friday, May 30, 2008 at 9:33pm by Amanda

Physics
Intensity(1) x Area(1) = Intensity(2) x Area(2) 109.7 x (pi(26.8)^2) = Intesity(2) x (pi(8500)^2) Intensity(2) = 1.09 x 10^-3
Monday, November 22, 2010 at 3:32pm by Claudia

Physics
At a distance of 30 m the noise from the engine of an jet has an intensity of 130 dB. At this level, you will be in pain and your ears will hurt. That's why this intensity is know as the "pain threshold". How far do you have to be from a jet (total distance), in ...
Friday, January 22, 2010 at 12:53am by Intensity

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