Integrated Concepts A neighboring galaxy rotates on its axis so that stars on one side move toward us as fast as 200 km/s, while those on the other side move away as fast as 200 km/s. This causes the EM radiation we receive to be Doppler shifted by velocities over the entire range of ± 200 km/s. What range of wavelengths will we observe for the 656.0-nm line in the Balmer series of hydrogen emitted by stars in this galaxy. (This is called line broadening.)
Integrated Concepts A neighboring galaxy rotates on its axis so that stars on one side move toward us as fast as 200 km/s, while those on the other side move away as fast as 200 km/s. This causes the EM radiation we receive to be Doppler shifted by velocities over the entire range of ± 200 km/s. What range of wavelengths will we observe for the 656.0-nm line in the Balmer series of hydrogen emitted by stars in this galaxy. (This is called line broadening.)
A neighboring galaxy rotates on its axis so that stars on one side move toward us as fast as 200 km/s, while those on the other side move away as fast as 200 km/s. This causes the EM radiation we receive to be Doppler shifted by velocities over the entire range of
±
200 km/s. What range of wavelengths will we observe for the 656.0-nm line in the Balmer series of hydrogen emitted by stars in this galaxy. (This is called line broadening.)
Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.
A neighboring galaxy rotates on its axis so that stars on one side move toward us as fast as 200 km/s, while those on the other side move away as fast as 200 km/s. This causes the EM radiation we receive to be Doppler shifted by velocities over the entire range of ±200 km/s. What range of wavelengths will we observe for the 656.0-nm line in the Balmer series of hydrogen emitted by stars in this galaxy. (This is called line broadening.)
help
1%Vr I.
: 2 / life physics que...
->
ở: choice the correct answer
1. If 5000 Joules of energy are released in a 100mA, 1 second exposure, the
tube potential is
a. 5KV
b. 50 KV
c. 500 KV
d. 5000 KV
2. If the wavelength of green light is 5 x 10 cm, its velocity in a vacuum is
a. 3x10° cm's b. 4.13x101 cm/ s c. 3.14x104 cm's d. not found
3. Which of the following has the least wavelength?
a. Gamma rays, b. blue light, c infrared radiation d. ultraviolet, radiation
4. the light travel --------- path
a. rectilinear b. zigzag
c. circular d. helical
5. The wavelength of light visible to eye is of the order of
a. 10 m
b. 10" m
с. 1 m
d. 6x10'm
g: the thickness of shielding material is 2cm required to reduce the intensity of
radiation to half of its original intensity. What is value absorption coefficient.
O': calculate the number of expected cancer cases if the cancer ratio is
6.5 x102 Sv
Personal of 10 years
20
20
28
30
15
H
18
10
8
5
Lecturer: Dr.bager alnashy
II
Essential University Physics: Volume 2 (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.