V=f*wavelength
30m/s=f*(0.35m)
f=85.7 Hz
Answer:
just do it. it's simple be smart friends
Answer:
For cast iron we have
For copper
For Lead
For Zinc
Explanation:
As we know that final speed of the block is calculated by work energy theorem
now we have
now we have
For cast iron we have
For copper
For Lead
For Zinc
A motion of particles quickly moving back and forth a point of equilibrium
Answer:
Explanation:
For this particular problem, we are going to use the non-relativistic Doppler effect which, is the change in frequency of a wave concerning an observer who's moving relative to the wave source. The shifted wavelength is:
,
where is the wavelenght as it comes from the source, is the velocity of the source (the quasar) and, is the velocity of the wave. In this case, the velocity of the wave is the speed of light, .
Solving for ,
,
now computing
,
The velocity of the quasar is negative because it is getting close to the Earth!