Answer:
The speed of the galaxy relative to the Earth is 
.
Explanation:
We have,
(a) Wavelength emitted by light at distant galaxy is 434.1 nm. On earth, the wavelength of this light is measured to be 438.6 nm. It can be seen that the wavelength of light reduces as it reaches Earth. It is called Red shift. As per Doppler's effect, we can say that the galaxy is receding from the Earth.
(b) Let v is the speed of the galaxy relative to the Earth. It can be given by :
So, the speed of the galaxy relative to the Earth is .
To see if the insulation would affect the temp of whatever you are measuring. <span />
Answer:
It is determined by dividing Mass by Force or newtons.
M/F = A
Explanation:
We can solve the problem by using conservation of energy.
In fact, the electric potential energy lost by the charge when moving through the potential difference is equal to the kinetic energy acquired:
where 
is the final kinetic energy, and 
is the initial kinetic energy, which is zero since the particle starts from rest.
We can rewrite the equation above as:
where
is the charge of the ion
is the potential difference
is the mass of the ion
is the final speed of the ion
Substituting the numbers and rearranging the equation, we can find the potential difference needed:
