Two objects have the same velocity, but one has twice the mass of the other. Compare the momentums of the two objects.
Question 6
6.
Question 7
7.
explain the difference between fission and fusion
Question 8
8.
Question 9
9.
What is the difference between a mechanical wave and an electromagnetic wave?
Question 10
10.
When an astronomer looks at spectra from a star, they look at four different characteristics. Match the characteristic to what it means.
Question 11
11.
Question 12
12.
Question 13
13.
Before a rocket blasts off, the rocket is motionless and therefore has 0 momentum. When the rocket blasts off the rocket and the fuel are both moving, and therefore have momentum. How can momentum be conserved after a blast like that?
Question 14
14.
Explain why a cloud of a specific gas will emit only light at a specific wavelength but if you shine light through that same cloud, you will get a full spectrum _EXCEPT_ the lines at that specific wavelength.
Question 15
15.
Why does it seem like momentum is not conserved when a ball gains speed moving downhill?
When light hits an atom, what is excited and jumps an energy level?
electrons
neutrons
protons
quarks
When light from a sun that passes through a thick atmosphere is split with a diffraction grating it appears to emit a
contiunous spectra
absorbtion spectra
emissions spectra
dark line spectra
When hot dense materials like a tungstun filiment (in an incansecent lightbulb) is split with a diffraction grating it appears to emit a
contiunous spectra
absorbtion spectra
emissions spectra
dark line spectra
Which has the least momentum?
A: 50 kg object at 5 m/s
B: 100 kg object at 10 m/s
C: 150 g object at 5 m/s
D: 200 kg object at 2 m/s
What is plasma in astronomy
part of the astroid belt
a type of fusion reaction
a state of matter
a miasma
If an object like a star is moving towards the Earth, the spectral lines are observed to be
red shifted
blue shifted
green shifted
yellow shifted
A wave along a string is a transverse wave. The fibers of the string move up and down. What moves along the string, perpendicular to the motion of the string?
materials
energy
medium
frequency
A light shines red. In order to make the light shine blue you must