Question

In: Physics

Modern Physics: Special Relativity All of these are part of one question; a) Sam once again...

Modern Physics: Special Relativity

All of these are part of one question;
a) Sam once again gets on a spaceship and travels to a planet 13 ly (light years) away at a speed 0.5c while Alex stays on Earth. How long does the entire trip take in Sam’s rest frame?
b) In Alex’s?
c) During the return trip, Sam turns on a lamp with a wavelength of 500 nm to send a signal to Alex. What wavelength does Alex observe?

Solutions

Expert Solution

a) the distance to the planet measured by Sam is

the time taken in Sam's rest frame is

b) Time taken in Alex's frame is

c) the wavelength measured by Alex is


Related Solutions

Modern Physics: Special Relativity A galaxy is receding from Earth at 15,000 km/s. If one of...
Modern Physics: Special Relativity A galaxy is receding from Earth at 15,000 km/s. If one of the characteristic wavelengths of light emitted by the galaxy is 550 nm, what corresponding wavelength will be measured by observers on Earth?
Modern Physics: Special Relativity Twin A travels to a planet 12 light-years away and back at...
Modern Physics: Special Relativity Twin A travels to a planet 12 light-years away and back at 0.6c while twin B remains on Earth. Each twin sends a message to the other every year in their own frame of reference. a) How many messages does each twin send? b) How many messages does each twin receive?
Modern Physics: Special Relativity In its own reference frame, a proton crosses the Milky Way (diameter...
Modern Physics: Special Relativity In its own reference frame, a proton crosses the Milky Way (diameter ? 105 light-years) in 5 minutes. a) What is the energy of the proton in eV? b) How long would it take the proton to cross the galaxy to an observer in the galaxy’s rest frame?
In SPECIAL RELATIVITY, what or why is - choose one of the three alternatives each for...
In SPECIAL RELATIVITY, what or why is - choose one of the three alternatives each for a) - d) a) AN EVENT (1. A line in spacetime - 2. A point in spacetime - 3. A space in spacetime) b) GENERALLY REFFERED TO AS "THE INTERVAL" (1. Time interval between events - 2. Space interval between events - 3. Spacetime interval between events) c) TIME MULTIPLIED WITH SPEED OF LIGHT (1. To give time the same unit as space -...
My question is from the textbook University Physics with Modern Physics 14th edition. Authors: Young and...
My question is from the textbook University Physics with Modern Physics 14th edition. Authors: Young and Freedman. It is from Chapter 23 Problem 52. The question is: A proton and an alpha particle are released from rest when they are 0.225 nm apart. The alpha particle (a helium nucleus) has essentially four times the mass and two times the charge of a proton. Find the maximum speed and maximum acceleration of each of these particles. When do these maxima occur:...
When it comes to EINSTEINS SPECIAL RELATIVITY, what is correct - choose one of the three...
When it comes to EINSTEINS SPECIAL RELATIVITY, what is correct - choose one of the three alternatives each for a) - d) a) A PHOTON (1. Has energy but no mass - 2. Has mass but no energy - 3. Has momentum but no energy) b) A PHOTON (1. Can create massive particles - 2. Can only create mass-less particles - 3. Ages conversely proportional to its energy) c) IS AN EXAMPLE OF AN INVARIANT (1. Momentum - 2. Energy...
Newton's law of gravity was inconsistent with Einstein's special relativity because Question 27 options: the distance,...
Newton's law of gravity was inconsistent with Einstein's special relativity because Question 27 options: the distance, and thus the force, depends on the reference frame chosen time dilation slows the apparent acceleration, reducing the force mass, and thus the force, depends on the reference frame chosen Newton didn't know about Einstein
----Modern Physics question: Please be thorough with your explanation. Using the Internet, find the location of...
----Modern Physics question: Please be thorough with your explanation. Using the Internet, find the location of a particle accelerator. In several paragraphs describe its size, what particles are being accelerated, how they are being accelerated, what their target is, how the particles are detected and what sub-atomic particles have been discovered at the site. Be sure to cite your sources.
. After seeing the result (from question 2), Cal decided to lower his price once again...
. After seeing the result (from question 2), Cal decided to lower his price once again to $2.729 per gallon. Once again, volume sold increases and settles at 4,800 gallons per day. He is worried that any further price cut will cause the discount station across the street to also lower its price. What is the price elasticity of demand? Can the demand be characterized as price elastic, price inelastic, or neither? By how much did revenues increase or decrease...
Question 3: The Bank of Canada once again reduced its key rate by 0.5 percentage point...
Question 3: The Bank of Canada once again reduced its key rate by 0.5 percentage point on March 24, aligning with the United States. What are the elements of aggregate demand that the Bank of Canada hopes to stimulate through this monetary policy?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT