SlideShare a Scribd company logo
1 of 1
Download to read offline
An earthquake measuring 6.4 on the Richter scale struck Japan in July 2007, causing extensive
damage. Earlier that year, a minor earthquake measuring 3.1 on the Richter scale was felt in parts
of Pennsylvania. How many times more intense was the Japanese earthquake than the
Pennsylvania earthquake? (Round your answer to the nearest whole number.) times
Solution
M = log(I/S)
where S is the intensity of std eartquake.
6.4 = log(I1/S)
3.1 = log(I2/S)
subtracting 2nd from 1st:
6.4 -3.1 = log(I1/S) - log(I2/S)
3.3 = log(I1/I2)
I1/I2 = 10^3.3
I1 = 1995I2
So, eartquake in Japan was 1995 times stronger than eqrtquake in Pennsylvania

More Related Content

More from arjuntelecom26

Charles Darwin Origin of Species3. Discuss the difficulties with s.pdf
Charles Darwin Origin of Species3. Discuss the difficulties with s.pdfCharles Darwin Origin of Species3. Discuss the difficulties with s.pdf
Charles Darwin Origin of Species3. Discuss the difficulties with s.pdfarjuntelecom26
 
Explain some of the common elements found in an HTML page.Soluti.pdf
Explain some of the common elements found in an HTML page.Soluti.pdfExplain some of the common elements found in an HTML page.Soluti.pdf
Explain some of the common elements found in an HTML page.Soluti.pdfarjuntelecom26
 
Dynamics - Vibration - natural frequencies and mode shapes Define pr.pdf
Dynamics - Vibration - natural frequencies and mode shapes Define pr.pdfDynamics - Vibration - natural frequencies and mode shapes Define pr.pdf
Dynamics - Vibration - natural frequencies and mode shapes Define pr.pdfarjuntelecom26
 
Determine one (1) advantage to selecting an S corporation status. Pr.pdf
Determine one (1) advantage to selecting an S corporation status. Pr.pdfDetermine one (1) advantage to selecting an S corporation status. Pr.pdf
Determine one (1) advantage to selecting an S corporation status. Pr.pdfarjuntelecom26
 
Delegate The role members of Congress serve in representing the i.pdf
Delegate The role members of Congress serve in representing the i.pdfDelegate The role members of Congress serve in representing the i.pdf
Delegate The role members of Congress serve in representing the i.pdfarjuntelecom26
 
A veterinarian amputated a swollen testicle from a zebra at a zoo an.pdf
A veterinarian amputated a swollen testicle from a zebra at a zoo an.pdfA veterinarian amputated a swollen testicle from a zebra at a zoo an.pdf
A veterinarian amputated a swollen testicle from a zebra at a zoo an.pdfarjuntelecom26
 
Albinism. Some might wonder why this disorder doesnt phase out.pdf
Albinism. Some might wonder why this disorder doesnt phase out.pdfAlbinism. Some might wonder why this disorder doesnt phase out.pdf
Albinism. Some might wonder why this disorder doesnt phase out.pdfarjuntelecom26
 
A Poisson distribution is such that the probability is the same for .pdf
A Poisson distribution is such that the probability is the same for .pdfA Poisson distribution is such that the probability is the same for .pdf
A Poisson distribution is such that the probability is the same for .pdfarjuntelecom26
 
A concave mirror forms an image on a screen that is twice as large as.pdf
A concave mirror forms an image on a screen that is twice as large as.pdfA concave mirror forms an image on a screen that is twice as large as.pdf
A concave mirror forms an image on a screen that is twice as large as.pdfarjuntelecom26
 
65 Fri Search Show Me How Payrell entries The prolL reinnent tor Ga.pdf
65 Fri  Search Show Me How Payrell entries The prolL reinnent tor Ga.pdf65 Fri  Search Show Me How Payrell entries The prolL reinnent tor Ga.pdf
65 Fri Search Show Me How Payrell entries The prolL reinnent tor Ga.pdfarjuntelecom26
 
Concisely, how may HDL metabolism and the onset of type-II diabetes b.pdf
Concisely, how may HDL metabolism and the onset of type-II diabetes b.pdfConcisely, how may HDL metabolism and the onset of type-II diabetes b.pdf
Concisely, how may HDL metabolism and the onset of type-II diabetes b.pdfarjuntelecom26
 
You are a correctional manager in a federal high security facility d.pdf
You are a correctional manager in a federal high security facility d.pdfYou are a correctional manager in a federal high security facility d.pdf
You are a correctional manager in a federal high security facility d.pdfarjuntelecom26
 
Write about the following ethics case studies1. Hyatt Regency Walk.pdf
Write about the following ethics case studies1. Hyatt Regency Walk.pdfWrite about the following ethics case studies1. Hyatt Regency Walk.pdf
Write about the following ethics case studies1. Hyatt Regency Walk.pdfarjuntelecom26
 
Which of the following is a temporary property of a eukaryotic cell.pdf
Which of the following is a temporary property of a eukaryotic cell.pdfWhich of the following is a temporary property of a eukaryotic cell.pdf
Which of the following is a temporary property of a eukaryotic cell.pdfarjuntelecom26
 
what is another word allografthomograftautograftxenograft.pdf
what is another word allografthomograftautograftxenograft.pdfwhat is another word allografthomograftautograftxenograft.pdf
what is another word allografthomograftautograftxenograft.pdfarjuntelecom26
 
When chromosomal fragments enter a cell , they must do what in or.pdf
When chromosomal fragments enter a cell , they must do what in or.pdfWhen chromosomal fragments enter a cell , they must do what in or.pdf
When chromosomal fragments enter a cell , they must do what in or.pdfarjuntelecom26
 
What type of CPU can interleave two or more programs for execution a.pdf
What type of CPU can interleave two or more programs for execution a.pdfWhat type of CPU can interleave two or more programs for execution a.pdf
What type of CPU can interleave two or more programs for execution a.pdfarjuntelecom26
 
What are two macromolecules important to the plant cell wall that ar.pdf
What are two macromolecules important to the plant cell wall that ar.pdfWhat are two macromolecules important to the plant cell wall that ar.pdf
What are two macromolecules important to the plant cell wall that ar.pdfarjuntelecom26
 
What happens when the coenzyme NAD^+ gains an H atom Multiple Choice.pdf
What happens when the coenzyme NAD^+ gains an H atom Multiple Choice.pdfWhat happens when the coenzyme NAD^+ gains an H atom Multiple Choice.pdf
What happens when the coenzyme NAD^+ gains an H atom Multiple Choice.pdfarjuntelecom26
 
What are the Denial of Service attacks and what are possible approac.pdf
What are the Denial of Service attacks and what are possible approac.pdfWhat are the Denial of Service attacks and what are possible approac.pdf
What are the Denial of Service attacks and what are possible approac.pdfarjuntelecom26
 

More from arjuntelecom26 (20)

Charles Darwin Origin of Species3. Discuss the difficulties with s.pdf
Charles Darwin Origin of Species3. Discuss the difficulties with s.pdfCharles Darwin Origin of Species3. Discuss the difficulties with s.pdf
Charles Darwin Origin of Species3. Discuss the difficulties with s.pdf
 
Explain some of the common elements found in an HTML page.Soluti.pdf
Explain some of the common elements found in an HTML page.Soluti.pdfExplain some of the common elements found in an HTML page.Soluti.pdf
Explain some of the common elements found in an HTML page.Soluti.pdf
 
Dynamics - Vibration - natural frequencies and mode shapes Define pr.pdf
Dynamics - Vibration - natural frequencies and mode shapes Define pr.pdfDynamics - Vibration - natural frequencies and mode shapes Define pr.pdf
Dynamics - Vibration - natural frequencies and mode shapes Define pr.pdf
 
Determine one (1) advantage to selecting an S corporation status. Pr.pdf
Determine one (1) advantage to selecting an S corporation status. Pr.pdfDetermine one (1) advantage to selecting an S corporation status. Pr.pdf
Determine one (1) advantage to selecting an S corporation status. Pr.pdf
 
Delegate The role members of Congress serve in representing the i.pdf
Delegate The role members of Congress serve in representing the i.pdfDelegate The role members of Congress serve in representing the i.pdf
Delegate The role members of Congress serve in representing the i.pdf
 
A veterinarian amputated a swollen testicle from a zebra at a zoo an.pdf
A veterinarian amputated a swollen testicle from a zebra at a zoo an.pdfA veterinarian amputated a swollen testicle from a zebra at a zoo an.pdf
A veterinarian amputated a swollen testicle from a zebra at a zoo an.pdf
 
Albinism. Some might wonder why this disorder doesnt phase out.pdf
Albinism. Some might wonder why this disorder doesnt phase out.pdfAlbinism. Some might wonder why this disorder doesnt phase out.pdf
Albinism. Some might wonder why this disorder doesnt phase out.pdf
 
A Poisson distribution is such that the probability is the same for .pdf
A Poisson distribution is such that the probability is the same for .pdfA Poisson distribution is such that the probability is the same for .pdf
A Poisson distribution is such that the probability is the same for .pdf
 
A concave mirror forms an image on a screen that is twice as large as.pdf
A concave mirror forms an image on a screen that is twice as large as.pdfA concave mirror forms an image on a screen that is twice as large as.pdf
A concave mirror forms an image on a screen that is twice as large as.pdf
 
65 Fri Search Show Me How Payrell entries The prolL reinnent tor Ga.pdf
65 Fri  Search Show Me How Payrell entries The prolL reinnent tor Ga.pdf65 Fri  Search Show Me How Payrell entries The prolL reinnent tor Ga.pdf
65 Fri Search Show Me How Payrell entries The prolL reinnent tor Ga.pdf
 
Concisely, how may HDL metabolism and the onset of type-II diabetes b.pdf
Concisely, how may HDL metabolism and the onset of type-II diabetes b.pdfConcisely, how may HDL metabolism and the onset of type-II diabetes b.pdf
Concisely, how may HDL metabolism and the onset of type-II diabetes b.pdf
 
You are a correctional manager in a federal high security facility d.pdf
You are a correctional manager in a federal high security facility d.pdfYou are a correctional manager in a federal high security facility d.pdf
You are a correctional manager in a federal high security facility d.pdf
 
Write about the following ethics case studies1. Hyatt Regency Walk.pdf
Write about the following ethics case studies1. Hyatt Regency Walk.pdfWrite about the following ethics case studies1. Hyatt Regency Walk.pdf
Write about the following ethics case studies1. Hyatt Regency Walk.pdf
 
Which of the following is a temporary property of a eukaryotic cell.pdf
Which of the following is a temporary property of a eukaryotic cell.pdfWhich of the following is a temporary property of a eukaryotic cell.pdf
Which of the following is a temporary property of a eukaryotic cell.pdf
 
what is another word allografthomograftautograftxenograft.pdf
what is another word allografthomograftautograftxenograft.pdfwhat is another word allografthomograftautograftxenograft.pdf
what is another word allografthomograftautograftxenograft.pdf
 
When chromosomal fragments enter a cell , they must do what in or.pdf
When chromosomal fragments enter a cell , they must do what in or.pdfWhen chromosomal fragments enter a cell , they must do what in or.pdf
When chromosomal fragments enter a cell , they must do what in or.pdf
 
What type of CPU can interleave two or more programs for execution a.pdf
What type of CPU can interleave two or more programs for execution a.pdfWhat type of CPU can interleave two or more programs for execution a.pdf
What type of CPU can interleave two or more programs for execution a.pdf
 
What are two macromolecules important to the plant cell wall that ar.pdf
What are two macromolecules important to the plant cell wall that ar.pdfWhat are two macromolecules important to the plant cell wall that ar.pdf
What are two macromolecules important to the plant cell wall that ar.pdf
 
What happens when the coenzyme NAD^+ gains an H atom Multiple Choice.pdf
What happens when the coenzyme NAD^+ gains an H atom Multiple Choice.pdfWhat happens when the coenzyme NAD^+ gains an H atom Multiple Choice.pdf
What happens when the coenzyme NAD^+ gains an H atom Multiple Choice.pdf
 
What are the Denial of Service attacks and what are possible approac.pdf
What are the Denial of Service attacks and what are possible approac.pdfWhat are the Denial of Service attacks and what are possible approac.pdf
What are the Denial of Service attacks and what are possible approac.pdf
 

Recently uploaded

HMCS Max Bernays Pre-Deployment Brief (May 2024).pptx
HMCS Max Bernays Pre-Deployment Brief (May 2024).pptxHMCS Max Bernays Pre-Deployment Brief (May 2024).pptx
HMCS Max Bernays Pre-Deployment Brief (May 2024).pptxEsquimalt MFRC
 
How to setup Pycharm environment for Odoo 17.pptx
How to setup Pycharm environment for Odoo 17.pptxHow to setup Pycharm environment for Odoo 17.pptx
How to setup Pycharm environment for Odoo 17.pptxCeline George
 
Key note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdfKey note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdfAdmir Softic
 
How to Manage Global Discount in Odoo 17 POS
How to Manage Global Discount in Odoo 17 POSHow to Manage Global Discount in Odoo 17 POS
How to Manage Global Discount in Odoo 17 POSCeline George
 
FSB Advising Checklist - Orientation 2024
FSB Advising Checklist - Orientation 2024FSB Advising Checklist - Orientation 2024
FSB Advising Checklist - Orientation 2024Elizabeth Walsh
 
UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdf
UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdfUGC NET Paper 1 Mathematical Reasoning & Aptitude.pdf
UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdfNirmal Dwivedi
 
Food safety_Challenges food safety laboratories_.pdf
Food safety_Challenges food safety laboratories_.pdfFood safety_Challenges food safety laboratories_.pdf
Food safety_Challenges food safety laboratories_.pdfSherif Taha
 
COMMUNICATING NEGATIVE NEWS - APPROACHES .pptx
COMMUNICATING NEGATIVE NEWS - APPROACHES .pptxCOMMUNICATING NEGATIVE NEWS - APPROACHES .pptx
COMMUNICATING NEGATIVE NEWS - APPROACHES .pptxannathomasp01
 
Accessible Digital Futures project (20/03/2024)
Accessible Digital Futures project (20/03/2024)Accessible Digital Futures project (20/03/2024)
Accessible Digital Futures project (20/03/2024)Jisc
 
TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...
TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...
TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...Nguyen Thanh Tu Collection
 
Fostering Friendships - Enhancing Social Bonds in the Classroom
Fostering Friendships - Enhancing Social Bonds  in the ClassroomFostering Friendships - Enhancing Social Bonds  in the Classroom
Fostering Friendships - Enhancing Social Bonds in the ClassroomPooky Knightsmith
 
Understanding Accommodations and Modifications
Understanding  Accommodations and ModificationsUnderstanding  Accommodations and Modifications
Understanding Accommodations and ModificationsMJDuyan
 
SOC 101 Demonstration of Learning Presentation
SOC 101 Demonstration of Learning PresentationSOC 101 Demonstration of Learning Presentation
SOC 101 Demonstration of Learning Presentationcamerronhm
 
80 ĐỀ THI THỬ TUYỂN SINH TIẾNG ANH VÀO 10 SỞ GD – ĐT THÀNH PHỐ HỒ CHÍ MINH NĂ...
80 ĐỀ THI THỬ TUYỂN SINH TIẾNG ANH VÀO 10 SỞ GD – ĐT THÀNH PHỐ HỒ CHÍ MINH NĂ...80 ĐỀ THI THỬ TUYỂN SINH TIẾNG ANH VÀO 10 SỞ GD – ĐT THÀNH PHỐ HỒ CHÍ MINH NĂ...
80 ĐỀ THI THỬ TUYỂN SINH TIẾNG ANH VÀO 10 SỞ GD – ĐT THÀNH PHỐ HỒ CHÍ MINH NĂ...Nguyen Thanh Tu Collection
 
2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx
2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx
2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptxMaritesTamaniVerdade
 
Salient Features of India constitution especially power and functions
Salient Features of India constitution especially power and functionsSalient Features of India constitution especially power and functions
Salient Features of India constitution especially power and functionsKarakKing
 
Sensory_Experience_and_Emotional_Resonance_in_Gabriel_Okaras_The_Piano_and_Th...
Sensory_Experience_and_Emotional_Resonance_in_Gabriel_Okaras_The_Piano_and_Th...Sensory_Experience_and_Emotional_Resonance_in_Gabriel_Okaras_The_Piano_and_Th...
Sensory_Experience_and_Emotional_Resonance_in_Gabriel_Okaras_The_Piano_and_Th...Pooja Bhuva
 
Single or Multiple melodic lines structure
Single or Multiple melodic lines structureSingle or Multiple melodic lines structure
Single or Multiple melodic lines structuredhanjurrannsibayan2
 
Python Notes for mca i year students osmania university.docx
Python Notes for mca i year students osmania university.docxPython Notes for mca i year students osmania university.docx
Python Notes for mca i year students osmania university.docxRamakrishna Reddy Bijjam
 

Recently uploaded (20)

HMCS Max Bernays Pre-Deployment Brief (May 2024).pptx
HMCS Max Bernays Pre-Deployment Brief (May 2024).pptxHMCS Max Bernays Pre-Deployment Brief (May 2024).pptx
HMCS Max Bernays Pre-Deployment Brief (May 2024).pptx
 
How to setup Pycharm environment for Odoo 17.pptx
How to setup Pycharm environment for Odoo 17.pptxHow to setup Pycharm environment for Odoo 17.pptx
How to setup Pycharm environment for Odoo 17.pptx
 
Key note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdfKey note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdf
 
How to Manage Global Discount in Odoo 17 POS
How to Manage Global Discount in Odoo 17 POSHow to Manage Global Discount in Odoo 17 POS
How to Manage Global Discount in Odoo 17 POS
 
FSB Advising Checklist - Orientation 2024
FSB Advising Checklist - Orientation 2024FSB Advising Checklist - Orientation 2024
FSB Advising Checklist - Orientation 2024
 
UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdf
UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdfUGC NET Paper 1 Mathematical Reasoning & Aptitude.pdf
UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdf
 
Food safety_Challenges food safety laboratories_.pdf
Food safety_Challenges food safety laboratories_.pdfFood safety_Challenges food safety laboratories_.pdf
Food safety_Challenges food safety laboratories_.pdf
 
COMMUNICATING NEGATIVE NEWS - APPROACHES .pptx
COMMUNICATING NEGATIVE NEWS - APPROACHES .pptxCOMMUNICATING NEGATIVE NEWS - APPROACHES .pptx
COMMUNICATING NEGATIVE NEWS - APPROACHES .pptx
 
Accessible Digital Futures project (20/03/2024)
Accessible Digital Futures project (20/03/2024)Accessible Digital Futures project (20/03/2024)
Accessible Digital Futures project (20/03/2024)
 
TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...
TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...
TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...
 
Fostering Friendships - Enhancing Social Bonds in the Classroom
Fostering Friendships - Enhancing Social Bonds  in the ClassroomFostering Friendships - Enhancing Social Bonds  in the Classroom
Fostering Friendships - Enhancing Social Bonds in the Classroom
 
Understanding Accommodations and Modifications
Understanding  Accommodations and ModificationsUnderstanding  Accommodations and Modifications
Understanding Accommodations and Modifications
 
SOC 101 Demonstration of Learning Presentation
SOC 101 Demonstration of Learning PresentationSOC 101 Demonstration of Learning Presentation
SOC 101 Demonstration of Learning Presentation
 
80 ĐỀ THI THỬ TUYỂN SINH TIẾNG ANH VÀO 10 SỞ GD – ĐT THÀNH PHỐ HỒ CHÍ MINH NĂ...
80 ĐỀ THI THỬ TUYỂN SINH TIẾNG ANH VÀO 10 SỞ GD – ĐT THÀNH PHỐ HỒ CHÍ MINH NĂ...80 ĐỀ THI THỬ TUYỂN SINH TIẾNG ANH VÀO 10 SỞ GD – ĐT THÀNH PHỐ HỒ CHÍ MINH NĂ...
80 ĐỀ THI THỬ TUYỂN SINH TIẾNG ANH VÀO 10 SỞ GD – ĐT THÀNH PHỐ HỒ CHÍ MINH NĂ...
 
2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx
2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx
2024-NATIONAL-LEARNING-CAMP-AND-OTHER.pptx
 
Mehran University Newsletter Vol-X, Issue-I, 2024
Mehran University Newsletter Vol-X, Issue-I, 2024Mehran University Newsletter Vol-X, Issue-I, 2024
Mehran University Newsletter Vol-X, Issue-I, 2024
 
Salient Features of India constitution especially power and functions
Salient Features of India constitution especially power and functionsSalient Features of India constitution especially power and functions
Salient Features of India constitution especially power and functions
 
Sensory_Experience_and_Emotional_Resonance_in_Gabriel_Okaras_The_Piano_and_Th...
Sensory_Experience_and_Emotional_Resonance_in_Gabriel_Okaras_The_Piano_and_Th...Sensory_Experience_and_Emotional_Resonance_in_Gabriel_Okaras_The_Piano_and_Th...
Sensory_Experience_and_Emotional_Resonance_in_Gabriel_Okaras_The_Piano_and_Th...
 
Single or Multiple melodic lines structure
Single or Multiple melodic lines structureSingle or Multiple melodic lines structure
Single or Multiple melodic lines structure
 
Python Notes for mca i year students osmania university.docx
Python Notes for mca i year students osmania university.docxPython Notes for mca i year students osmania university.docx
Python Notes for mca i year students osmania university.docx
 

An earthquake measuring 6.4 on the Richter scale struck Japan in Jul.pdf

  • 1. An earthquake measuring 6.4 on the Richter scale struck Japan in July 2007, causing extensive damage. Earlier that year, a minor earthquake measuring 3.1 on the Richter scale was felt in parts of Pennsylvania. How many times more intense was the Japanese earthquake than the Pennsylvania earthquake? (Round your answer to the nearest whole number.) times Solution M = log(I/S) where S is the intensity of std eartquake. 6.4 = log(I1/S) 3.1 = log(I2/S) subtracting 2nd from 1st: 6.4 -3.1 = log(I1/S) - log(I2/S) 3.3 = log(I1/I2) I1/I2 = 10^3.3 I1 = 1995I2 So, eartquake in Japan was 1995 times stronger than eqrtquake in Pennsylvania