Which distance measurement technique is best suited to measuring objects at a distance of 10 light-years?
What will be an ideal response?
Parallax
Physics & Space Science
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Hydrogen Balmer lines are essentially absent in the O and M type stars.
Answer the following statement true (T) or false (F)
Physics & Space Science
A bow wave is produced in water when the speed of an object
A) matches the speed of waves in water. B) exceeds the speed of waves in water. C) is less than the speed of waves in water. D) none of the above
Physics & Space Science
The fact that ?mT = 2.9 × 10-3 m-K is known as
A) Maxwell's law. B) Planck's law. C) Bohr's law. D) de Broglie's law. E) Wien's law.
Physics & Space Science
The correspondence principle applies to
A) theories of submicroscopic phenomena. B) theories of macroscopic phenomena. C) all good theories.
Physics & Space Science