If a galaxy is traveling away from us at 2.0 % of the speed of light, roughly how far away is it?
If a galaxy is traveling away from us at 2.0 % of the speed of light,...
A galaxy is moving away from us at 2.5 *10^7m/s. What is the frequency of light observed by us if the wavelength of the emitted light is 500 nm?
A distant galaxy is moving away from Earth at a speed of 70,000 km/s. If a star in that galaxy emits light at a wavelength of 450 nm, what is the wavelength of that light when it reaches Earth? Speed of light c= 300,000 km/s.
Galaxy A moves away from galaxy B at 0.700 c0 relative to B. A spaceship leaves a planet in galaxy A traveling at 0.550 c0 relative to galaxy A. If the direction in which the ship travels is the same as the direction in which A is moving away from B, what do observers in B measure for the ship's speed?
pls help hurry pupp! If a galaxy moves away from us 4 times its original distance, how would its redshift change? It would remain the same It would increase by a factor of 1/2 It would increase by a factor of 2 It would increase by a factor of ¼ It would increase by a factor of 4 A star that is 100 light years away from us has a luminosity of 1 L_Sun. What would its luminosity be if...
A far away galaxy approaches Earth at a velocity v= 0.62c and emits light at a wavelength of 368 nm. What frequency does an observer on Earth measure? (c is the speed of light) f= 1.68 × 1015 Hz f= 3.95 × 1014 Hz f= 8.15 × 1014 Hz f= 471 Hz f= 2.72 × 106 Hz
If a galaxy is 570 Mly away from us, how fast do we expect it to be moving and in what direction?
If a galaxy is 165 Mly away from us, how fast do we expect it to be moving and in what direction? Answer in km/s
Consider a spiral galaxy that is moving directly away from Earth with a speed V=3.24*10^5 at its center. The galaxy is also rotating about its center such that points in the spiral arms are moving with a soeed V=5.750*10^5m/s relative to the center. If light with a frequency of 7.308*10^14Hz is emitted in both arms of the galaxy, what frequency is detected by astronomers observing the arm that is moving (a) toward and (b) away from Earth? Please break down...
11. Astronomers observing a distant galaxy detect light from the Lyman a transition (n = 2 → n = 1 in hydrogen) at a frequency of 2.25 x 1015 Hz. Estimate how far away the galaxy is. (You may take the Hubble constant to be 70kms- Mpc) A supernova causes a sudden brightening of the galaxy, which lasts for forty days as seen from Earth. How long did it last in the rest-frame of the galaxy?
11. Astronomers observing a...
Earth's neighboring galaxy, the Andromeda Galaxy, is a distance of 2.54×107 light-years from Earth. If the lifetime of a human is taken to be 75.0 years, a spaceship would need to achieve some minimum speed ?min to deliver a living human being to this galaxy. How close to the speed of light would this minimum speed be? Express your answer as the difference between ?min and the speed of light ?. ?−?min= __________ m/s