Question

A distant galaxy emits light that has a wavelength of 620 nm. On Earth, the wavelength...

A distant galaxy emits light that has a wavelength of 620 nm. On Earth, the wavelength of this light is measured to be 623 nm.

a. Is this galaxy approaching or receding from the earth?

b. Find the speed of the galaxy relative to earth.

c. If this galaxy also emits another EM wave whose wavelength is 1025nm, what wavelength would we expect to measure on Earth for this wave?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the...
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 = 1.60 × 106 m/s. Relative to the center, the tangential speed is vT = 0.580 × 106 m/s for locations A and B, which are equidistant from the center. When the frequencies of the light coming from regions A and B are measured on earth, they are not the same...
A radiation known as H? (?=434.1 nm) is used to determine the motion of distant galaxies....
A radiation known as H? (?=434.1 nm) is used to determine the motion of distant galaxies. The wavelength of H? from a galaxy is 462.0 nm, as observed on Earth. (a) What is the minimum speed of the galaxy relative to Earth? (b) Is the galaxy moving away from (enter 0) or approaching (enter 1) Earth?
A light wave has a 670 nm wavelength in air. Its wavelength in a transparent solid...
A light wave has a 670 nm wavelength in air. Its wavelength in a transparent solid is 420 nm . What is the speed of light in this solid? What is the light's frequency in the solid?
Show all calculations and formulas used. The closest star to earth is 4.253 light years away....
Show all calculations and formulas used. The closest star to earth is 4.253 light years away. How far is that in miles? The fastest space probe ever designed has a speed of about 58,000 km/h. How long would it take it to cross the length of the milky way galaxy? If the parallax angle of a star is 0.000075% then how far away is that star? What is the relative brightness of the Sun as seen from Saturn as compared...
4.         If the planet Mars is about 56 million kilometers from Earth, how long would it...
4.         If the planet Mars is about 56 million kilometers from Earth, how long would it take for a radio wave sent from a space satellite circling Mars to reach Earth? Assume that radio waves (a form of electromagnetic radiation) travel at the speed of light. 5.         If a laser with a wavelength of 450 nm emits total 7.25 x 1017 photons over a given time period, what is the total energy produced? 6.         A fluorescent mineral absorbs “black light”...
A laser emits light at power 6.01 mW and wavelength 633 nm. The laser beam is...
A laser emits light at power 6.01 mW and wavelength 633 nm. The laser beam is focused (narrowed) until its diameter matches the 1060 nm diameter of a sphere placed in its path. The sphere is perfectly absorbing and has density 5.00 × 103 kg/m3. What are (a) the beam intensity at the sphere's location, (b) the radiation pressure on the sphere, (c) the magnitude of the corresponding force, and (d) the magnitude of the acceleration that force alone would...
A laser emits light at power 5.49 mW and wavelength 633 nm. The laser beam is...
A laser emits light at power 5.49 mW and wavelength 633 nm. The laser beam is focused (narrowed) until its diameter matches the 1230 nm diameter of a sphere placed in its path. The sphere is perfectly absorbing and has density 5.00 × 103 kg/m3. What are (a) the beam intensity at the sphere's location, (b) the radiation pressure on the sphere, (c) the magnitude of the corresponding force, and (d) the magnitude of the acceleration that force alone would...
Orange Light, with a wavelength of 589 nm, from a distant street lamp passes through a...
Orange Light, with a wavelength of 589 nm, from a distant street lamp passes through a mesh screen in front of a window and creates a diffraction pattern on a wall 5.6 mm  away. Part A - What angle would be measured between the central maximum and the first order maxmium in the diffraction pattern? Part complete Assume the spacing between the wires in the mesh are 1 mm apart. 0.050.05 Degrees SubmitPrevious Answers Incorrect; correct answer withheld by instructor Part...
When light of wavelength, 115 nm, impinges a photocathode that has a binding energy of 2.59...
When light of wavelength, 115 nm, impinges a photocathode that has a binding energy of 2.59 eV, electrons are ejected. What is the speed (in m/s) of the ejected electrons? h = 6.626 x 10–34J·s, c = 2.9979 x 108m/s, 1 eV = 1.602 x 10–19 J, NA= 6.022 x 1023mol–1, me = 9.11 x 10–31 kg, KE = ½ mv2. Report your answer to three significant figures. It might be easier to enter your answer in scientific notation. So,...
Question 1 Science affecting our daily lives is exemplified by: relying on hunches to solve crimes....
Question 1 Science affecting our daily lives is exemplified by: relying on hunches to solve crimes. using DNA evidence in criminal investigations. seeking the help of people with psychic visions in police work. relying entirely on preconceptions to identify people who may have committed crimes. 4 points Question 2 When an object’s velocity changes, which of the following must have occurred? A unbalanced force acted on the object. An balanced force acted on the object. The object started to deviate...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT