The result of
changing a physical sound wave into an analogous electrical signal using a
transducer (such as a microphone) is called analogue audio. In this system, the rapid electrical level is
directly proportional to the rapid air pressure taken by the transducer. The analogue
signal is then augmented and can be kept on an analogue medium such as tape or transformed
further into a succession of discrete mathematical numbers. The advantages of
using this device is that it yields a subtle sound and is pleasing to the ear
by pushing the signal level and overdriving it. But the disadvantages are
editing it would be tedious and prone to degradation.
The Doppler Effect is the change in frequency or wavelength of a wave for an observer moving relative to its source. It is named after the Austrian physicist Christian Doppler.
All variables should be controlled except the one being tested because it would allow to ascertain the researcher that the results is truly an effect of that one and tested variable. This variable is called the independent variable. It is what is being changed and manipulated in a research to effect a change to the dependent variable which is the variable being studied.
<span>First, there is no external force acting on the asteroids ( I don't think so, since they are travelling at constant velocity).
Since there is no external force acting on the individual asteroids, their respective momenta are constant in time as well.
So, in your momentum v/s Time graph, the momenta for each asteroid will correspond to a straight line parallel to time axis.
This happens until they collide. On collision an impulse acts on each asteroid ( by Newton's third law, the same magnitude of impulse acts on the two bodies).
Due to this impulse, their respective momenta will change. You just need a little mathematics to figure out the respective momenta after the collision.
Keep in mind there is no external force on the system, so after collision, the asteroids would again move with constant velocities.
(Conservation of linear momentum of the system would help! You just need another equation to find out the velocities)</span>
My rate for him is 10/10 perfect