Answer:
Speed = Wavelength x Frequency.
Explanation:
Answer:
D By looking all the way to the cosmological horizon, we can see the actual conditions that prevailed all the way back to the first instant of the Big Bang.
Explanation:
Astrophysicists are able to determine the conditions that existed in the early universe, by using instruments such as telescopes to observe and study cosmic horizons. More ideas about the early universe can be found from the thermal light present in cosmic backgrounds.
Scientists study these details that provide an insight into the conditions that existed so many years ago. They have been able to determine that the Big Bang involved so many collisions from these observations.
<span>N-type
semiconductor materials have been with elements which have spare
electrons in their outer shells. This gives N-type silicon free
electrons (which are negatively charged partials) which can move about
at will - with the potential to create current.
P-type semiconductor materials have been in the opposite way, with
elements that have too few electrons in their outer shells. Therefore
the opposite of electrons - holes - are free to move about within the
material - with the potential to create current.
You can think of it like positive and negative poles of a magnet.
When you place a piece of N-type silicon next to a piece of P-type
silicon, they form a diode. The excess electrons in the N-type are
attracted to the excess holes in the P-type, forming what is known as a
P-N junction. If you then put a potential difference (voltage) across
the junction such that the P-type is sufficiently higher potential than
the N-type, electrons will be able to jump across the boarder from the
N-type to the P-type, creating current in the opposite direction.
If you apply the potential difference in the opposite direction, such
that the N-type is at a higher potential than the P-type, there is no
flow of electrons from the P to the N-type because the N-type already
has too many. There is no current flow.
</span>
To solve this problem it is necessary to take into account the kinematic equations of motion and the change that exists in the volume flow.
By definition the change in speed is given by
Where,
x= distance
final velocity
initial velocity
a = acceleration
On the other hand we know that the flow of a fluid is given by
Where,
A = Area
v = Velocity
PART A )
Applying this equation to the previously given values we have to
Therefore the velocity of the water leaving the hole is 17.48m/s
PART B )
In the case of the hole we take the area of a circle, therefore replacing in the flow equation we have to,
The diameter is 2 times the radius, then is 
m or 1.91mm
<em>Note: The rate flow was converted from minutes to seconds.</em>
