Author Question: When all the colors of the rainbow can be seen in a spectrum and no individual bright or dark lines ... (Read 77 times)

asan beg · **on:** Jul 28, 2018

When all the colors of the rainbow can be seen in
a spectrum and no individual bright or dark lines
are visible, the spectrum is called
a)an emission spectrum.
b)a continuous spectrum.
c)a chromatic spectrum.
d)an absorption spectrum.

Question 2

An 8.0-kg object moving 4.0 m/s in the positive x direction has a one-dimensional collision with a 2.0-kg object moving 3.0 m/s in the opposite direction. The final velocity of the 8.0-kg object is 2.0 m/s in the positive x direction. What is the total kinetic energy of the two-mass system after the collision?
a. 32 J
b. 52 J
c. 41 J
d. 25 J
e. 29 J