First of all, there are not <u>just</u> two applications that are solely applicable to the electron beam welding process. There are MANY.
Please visit out website at the URL below and you can click the "View Application" button under each listed Industry segment to view case studies of commonly EB welded applications.
https://www.ptreb.com/electron-beam-welding-applications
And for more general information on our welding process, we have an informational section you can peruse as well:
https://www.ptreb.com/electron-beam-welding-information
Good luck with your assignment- we are glad to hear they are teaching about EBW in high school!!!
Answer:
The average velocity has magnitude = 10 km/h , direction: east
Explanation:
In order to find the average velocity of the car we need to know the final and initial positions, and the time that took to get from one to the other.
Notice that since its movement was 60 km straight east and then from there 40 km straight west, the car is positioned at 20 km to the east of its initial departure point. therefore the vector change in position is a vector 20 km in magnitude, and direction towards the east.
Since it took the car a total of 1.33 hours plus 0.67 hours to reach its final position, the total time elapsed is: 1.33 + 0.67 hours = 2 hours.
Then,the velocity vector has magnitude; 20 km / 2 hours = 10 km/hour
As we mentioned above. the direction of the velocity vector is east.
A) ![5.0\cdot 10^{-11} m](https://tex.z-dn.net/?f=5.0%5Ccdot%2010%5E%7B-11%7D%20m)
The energy of an x-ray photon used for single dental x-rays is
![E=25 keV = 25,000 eV \cdot (1.6\cdot 10^{-19} J/eV)=4\cdot 10^{-15} J](https://tex.z-dn.net/?f=E%3D25%20keV%20%3D%2025%2C000%20eV%20%5Ccdot%20%281.6%5Ccdot%2010%5E%7B-19%7D%20J%2FeV%29%3D4%5Ccdot%2010%5E%7B-15%7D%20J)
The energy of a photon is related to its wavelength by the equation
![E=\frac{hc}{\lambda}](https://tex.z-dn.net/?f=E%3D%5Cfrac%7Bhc%7D%7B%5Clambda%7D)
where
is the Planck constant
is the speed of light
is the wavelength
Re-arranging the equation for the wavelength, we find
![\lambda=\frac{hc}{E}=\frac{(6.63\cdot 10^{-34} Js)(3\cdot 10^8 m/s)}{4\cdot 10^{-15}J}=5.0\cdot 10^{-11} m](https://tex.z-dn.net/?f=%5Clambda%3D%5Cfrac%7Bhc%7D%7BE%7D%3D%5Cfrac%7B%286.63%5Ccdot%2010%5E%7B-34%7D%20Js%29%283%5Ccdot%2010%5E8%20m%2Fs%29%7D%7B4%5Ccdot%2010%5E%7B-15%7DJ%7D%3D5.0%5Ccdot%2010%5E%7B-11%7D%20m)
B) ![2.0\cdot 10^{-11} m](https://tex.z-dn.net/?f=2.0%5Ccdot%2010%5E%7B-11%7D%20m)
The energy of an x-ray photon used in microtomography is 2.5 times greater than the energy of the photon used in part A), so its energy is
![E=2.5 \cdot (4\cdot 10^{-15}J)=1\cdot 10^{-14} J](https://tex.z-dn.net/?f=E%3D2.5%20%5Ccdot%20%284%5Ccdot%2010%5E%7B-15%7DJ%29%3D1%5Ccdot%2010%5E%7B-14%7D%20J)
And so, by using the same formula we used in part A), we can calculate the corresponding wavelength:
![\lambda=\frac{hc}{E}=\frac{(6.63\cdot 10^{-34} Js)(3\cdot 10^8 m/s)}{1\cdot 10^{-14}J}=2.0\cdot 10^{-11} m](https://tex.z-dn.net/?f=%5Clambda%3D%5Cfrac%7Bhc%7D%7BE%7D%3D%5Cfrac%7B%286.63%5Ccdot%2010%5E%7B-34%7D%20Js%29%283%5Ccdot%2010%5E8%20m%2Fs%29%7D%7B1%5Ccdot%2010%5E%7B-14%7DJ%7D%3D2.0%5Ccdot%2010%5E%7B-11%7D%20m)
Answer:
the lens is located in the eye. by changing its shape, the lens changes the focal distance of the eye. in other words,it focuses the light rays that pass through it (and onto the retina) in order to create clear images of objects that are positioned
at various distances.
Answer:
The theory of plate tectonics describes the movement of the plates across the Earth's lithosphere (the crust and upper mantle) through immense periods of time. Earth's litoshphere is composed of 7 (or 8, depending on how they are defined) major plates and many more minor plates.
The movement is attributed to different phenomena stemming from Earth's rotation, gravity, and mantle dynamics. All of these forces play a role in influencing the size, shape, and positioning of the different landmasses that currently shape our continents and islands.
Explanation:
In a nutshell, land originated from magma in the Earth's core escaping through the cracks and making its way to the ocean. The water cooled down the magma and this process created all of the land both above and below the sea. The landforms that we see all around the Earth today were formed thanks to collisions and separations of the plates thoughout billions of years.