Answer:
The new angular speed is ![w = 6 \ rev/s](https://tex.z-dn.net/?f=w%20%3D%20%206%20%5C%20rev%2Fs)
Explanation:
From the question we are told that
The angular velocity of the spin is ![w_o = 3 \ rev/s](https://tex.z-dn.net/?f=w_o%20%3D%203%20%5C%20rev%2Fs)
The original moment of inertia is ![I_o](https://tex.z-dn.net/?f=I_o)
The new moment of inertia is
Generally angular momentum is mathematically represented as
Now according to the law of conservation of momentum, the initial momentum is equal to the final momentum hence the angular momentum is constant so
![I * w = constant](https://tex.z-dn.net/?f=I%20%2A%20%20w%20%20%3D%20%20constant)
=> ![I_o * w _o = I * w](https://tex.z-dn.net/?f=I_o%20%2A%20%20w%20_o%20%20%3D%20%20I%20%20%2A%20%20w)
where w is the new angular speed
So
![I_o * 3 = \frac{I_o}{2} * w](https://tex.z-dn.net/?f=I_o%20%2A%20%203%20%3D%20%20%5Cfrac%7BI_o%7D%7B2%7D%20%20%2A%20%20w)
=> ![w = \frac{3 * I_o}{\frac{I_o}{2} }](https://tex.z-dn.net/?f=w%20%3D%20%20%5Cfrac%7B3%20%2A%20I_o%7D%7B%5Cfrac%7BI_o%7D%7B2%7D%20%7D)
=> ![w = 6 \ rev/s](https://tex.z-dn.net/?f=w%20%3D%20%206%20%5C%20rev%2Fs)
If im not wrong lunar eclipse is when the Earth, moln and sun all line up, leaving the Earth in the middle. You can recheck later.
A). Earth completes one rotation on its rotation axis
every (3 minutes and 56 seconds less than 24 hours).
This causes night and day. It's rotation, not precession.
B). Earth completes one orbital revolution around the sun
every (365 plus a little bit) days. It's revolution, not precession.
C). I'm not sure what happens on a cycle of 512 years.
It may have something to do with the moon. But whatever
it is, it's not precession.
D). When you spin a top and it starts to run down, the first
thing that happens is that the handle of the top, or the point
on top of the top, starts moving in a circle. That's precession.
That's what the Earth's axis is doing. The north pole points
toward the north star (Polaris) now. But the north pole is
actually drawing out a big circle in the sky, and other stars
will become the "north star" far in the future.
The north pole draws out a full circle in the sky, roughly
once every 26,000 years. That's precession.
The right answer for the question that is being asked and shown above is that: "B. condensation from the ocean and then evaporation into a cloud." a water molecule transfer from the ocean to form part of a cloud in the atmosphere is that <span>condensation from the ocean and then evaporation into a cloud</span>
To solve this problem we must simply resort to Newton's second law as well as the relationship between pressure and force as a physical unit applied in a given area.
In mathematical terms the Weight can be expressed as
![F_w = mg](https://tex.z-dn.net/?f=F_w%20%3D%20mg)
Where,
m = mass
g = Gravitational Acceleration
We have the mass and the gravitational acceleration therefore the Weight is
![m = 7.23*10^4Kg](https://tex.z-dn.net/?f=m%20%3D%207.23%2A10%5E4Kg)
![g = 9.8m/s^2](https://tex.z-dn.net/?f=g%20%3D%209.8m%2Fs%5E2)
Replacing we have
![F_w = (7.23*10^4)(9.8)](https://tex.z-dn.net/?f=F_w%20%3D%20%287.23%2A10%5E4%29%289.8%29)
![F_w = 708540 N](https://tex.z-dn.net/?f=F_w%20%3D%20708540%20N)
In this way the pressure exerted according to the active Area is,
![P = \frac{F}{A}](https://tex.z-dn.net/?f=P%20%3D%20%5Cfrac%7BF%7D%7BA%7D)
![P = \frac{708540}{77.5}](https://tex.z-dn.net/?f=P%20%3D%20%5Cfrac%7B708540%7D%7B77.5%7D)
![P = 9142.45Pa](https://tex.z-dn.net/?f=P%20%3D%209142.45Pa)
Therefore the pressure difference between the lower and upper surface of the wings is 9.14kPa