Of the seven chambers in the masque of the red death, which room is the least popular, and why?

What happens to light waves from a star as the star moves away from Earth?

AURORKA [14]

<h2>Answer: Light waves have a redshift due to the Doppler effect </h2>

The astronomer Edwin Powell Hubble observed several celestial bodies, and when obtaining the spectra of distant galaxies he observed the spectral lines were displaced towards the red (red shift), whereas the nearby galaxies showed a spectrum displaced to the blue.

From there, Hubble deduced that the farther the galaxy is, the more redshifted it is in its spectrum. <u>The same happens with the stars and this phenomenom is known as the Doppler effect. </u>

This phenomenon refers to the change in a wave perceived frequency (or wavelength=color) when the emitter of the waves, and the receiver (or observer in the case of light) move relative to each other. For example, as a star moves away from the Earth, its espectrum turns towards the red.

8 0

3 years ago

Find the momentum p, in the laboratory frame of reference, of a proton moving with a speed of 0.805

user100 [1]

The relativistic formula for the momentum of a particle of mass m and moving at speed v is
$p= \frac{mv}{ \sqrt{1- \frac{v^2}{c^2} } }$
where c is the speed of light.

In our problem, the speed in terms of c is $v=0.805 c$ , and the mass (still written in terms of c) is $m=938 Mev/c^2$ . Substituting these values in the previous formula, we can find the value of the momentum of the proton:
$p= \frac{(938 MeV/c^2)(0.805 c)}{ \sqrt{1-( \frac{0.899c}{c} )^2} } =1273 MeV/c$

4 0

4 years ago

A charge of 1.0 × 10-6 μC is located inside a sphere, 1.25 cm from its center. What is the electric flux through the sphere due

Korvikt [17]

Answer:

$\Phi_E=0.11\frac{N\cdot m^2}{C}$