Associations are loose groups of young stars in the spiral arms usually mingled with large clouds of gas and dust.
Answer the following statement true (T) or false (F)
True
Physics & Space Science
You might also like to view...
Internal energy is a _____________variable.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
A diffraction grating with 10 rulings is illuminated by a light source. When do other wavelengths begin to distinguish themselves from 500 nm in the second order?
1.at 475 nm and 525 nm 2.at 450 nm and 550 nm 3.at 495 nm and 505 nm 4.at 487.5 nm and 512.5 nm
Physics & Space Science
Which has the smaller critical mass; U-235 that releases 2.5 neutrons per fission, or Pu-239 that releases 2.7 neutrons per fission?
A) U-235 B) Pu-239 C) both would have the same critical mass.
Physics & Space Science
If a guitar string has a fundamental frequency of 250 Hz, what is the frequency of its third harmonic?
a. 250 Hz c. 1000 Hz b. 750 Hz d. 1500 Hz
Physics & Space Science