subject
Physics, 21.04.2020 03:10 KeiraDawn

The LIGO experiment, which historically detected gravitational waves for the first time in September 2015, uses a pair of highly sensitive Michelson interferometers. These have arms that are 4.00 km long and use powerful Nd:Yag lasers with 1064 nm wavelength. The beams traverse the arms both ways 280 times before recombining, which effectively lengthens the arm length to 1120 km. The devices are tuned so that the beams destructively interfere when they recombine if no gravitational wave is present. (a) The beam has a power of 100 kW, concentrated into an area of a square centimeter. Calculate the amplitude of the electric field in the beam. (b) LIGO can detect a gravitational wave that temporarily lengthens one arm by the minuscule amount of 10-18 m! When this happens, the beams combine with a phase difference of π+δ. Estimate the shift δ in radians. Note that the phase difference accumulates during both traversals of each round trip. (c) Use Eq. (35.7)to estimate the sensitivity of the photodetector in terms of the minimal electric field strength needed to detect a gravitational wave.

Eqn 35.7
Ep = 2E |cos (theta/2) |

ansver
Answers: 1
Show answers

Another question on Physics

question
Physics, 22.06.2019 03:00
Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law
Answers: 2
Answer
question
Physics, 22.06.2019 12:50
Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass
Answers: 3
Answer
question
Physics, 22.06.2019 17:30
Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?
Answers: 3
Answer
question
Physics, 23.06.2019 02:00
Provides most of the energy used in the world today. question 4 options: wind fossil fuel moving water sunlight
Answers: 1
Answer
You know the right answer?
The LIGO experiment, which historically detected gravitational waves for the first time in September...
Questions
question
Mathematics, 15.12.2020 17:40
A triangle has vertices with coordinates (2,0), (3, -1) and (-2,-5). If the triangle is dilated by a scale factor of 3 with the origin as the center...
question
Mathematics, 15.12.2020 17:40
Closing Write a short paragraph explaining what you believe to be the pros and cons of credit...
question
Mathematics, 15.12.2020 17:40
Can sides of a triangle have lengths 3,4,9...
question
History, 15.12.2020 17:40
Why did Nellie laugh about her bath in chapter 11? Please help, I've procrastinated for too long....
question
Mathematics, 15.12.2020 17:40
What is the equation of the line through the origin and (-4,-9)? OA. y= 9x O B. y= OC. y= 4x OD. y
question
Mathematics, 15.12.2020 17:40
Use the Distributive Property to expand 6(-4x+3y)...
question
Physics, 15.12.2020 17:40
Handles of metals cutters are made long give reason...
question
Chemistry, 15.12.2020 17:40
How will the calcium atom shown below achieve an octet if it takes part in an ionic bond? a The calcium atom will gain 8 electrons. b
question
Geography, 15.12.2020 17:40
What type of plant life is around the Amazon River in South America?* mountain tundra tropical rain forest brush grass savanah...
question
History, 15.12.2020 17:40
How did Portugal economically benefit as the first Christian kingdom to established trade and educational relations in Africa?...
question
Biology, 15.12.2020 17:40
Enrique examines a plant species to determine whether it could be a pioneer species. Which questions should he ask about the plant? Check all that app...
question
Mathematics, 15.12.2020 17:40
PLS HELP WITH THIS QUESTION ASAP! Pls Link A Picture With A Graph You Drew To Answer This Question!Question Shown In The Picture.
question
Biology, 15.12.2020 17:40
The Calvin cycle produces glucose via:...
question
History, 15.12.2020 17:40
2) Name the 3 types of government officials and explain each of their duties....
question
Mathematics, 15.12.2020 17:40
The owner of a candle store purchases his candies from a local distributor. The graph below shows the relationship between n, the number of candles or...
question
Mathematics, 15.12.2020 17:40
jason said that yesterday he earned 4r+10t dollars and that today he earned 10r+2t dollars write an expression for the total amount jason earned in tw...
question
Mathematics, 15.12.2020 17:40
Given the explicit definition of the sequence an=3(2)^n-1 Find the 11th term of the sequence...
question
Mathematics, 15.12.2020 17:40
Hey hru plz dont ask how i am because im not good also is this right or no?
question
Mathematics, 15.12.2020 17:40
The students in an eighth-grade class had a dance. They spent $500 for a local band. The equation shown can be used to find the total profit, y, if th...
question
Physics, 15.12.2020 17:40
If a chemical reaction such as the formation of our own oxide contains for Adams of iron(Fe) in the product how many items of iron would be the reacta...
More questions: Physics Another questions
Questions on the website: 13722362
See results (0)