Answer: 2.068*
m
Explanation: According to work energy-theorem , the workdone in accelerating the electron equals the energy it would give off in terms of light.
workdone= qV
energy = hc/λ
q=magnitude of an electronic charge= 1.602*![10^{-16}](https://tex.z-dn.net/?f=10%5E%7B-16%7D)
h= planck constant = 6.626*![10^{-34}](https://tex.z-dn.net/?f=10%5E%7B-34%7D)
c= speed of light =2.998* ![10^{8}](https://tex.z-dn.net/?f=10%5E%7B8%7D)
v= potential difference= 6*![10^{4}](https://tex.z-dn.net/?f=10%5E%7B4%7D)
λ= wavelength=unknown
by making λ subject of formulae we have that
λ= ![\frac{hc}{qv}](https://tex.z-dn.net/?f=%5Cfrac%7Bhc%7D%7Bqv%7D)
λ = 6.626*
* 2.998*
/ 1.602*
* 6*![10^{4}](https://tex.z-dn.net/?f=10%5E%7B4%7D)
λ = ![\frac{19.878*10^{-26} }{9.612*10^{-12} }](https://tex.z-dn.net/?f=%5Cfrac%7B19.878%2A10%5E%7B-26%7D%20%7D%7B9.612%2A10%5E%7B-12%7D%20%7D)
by doing the necessary calculations, we have that
λ = 2.068*
m
Answer:
The horizontal component of the velocity is 188 m/s
The vertical component of the velocity is 50 m/s.
Explanation:
Hi there!
Please, see the figure for a graphic description of the problem. Notice that the x-component of the vector velocity (vx), the y-component (vy) and the vector velocity form a right triangle. Then, we can use trigonometry to obtain the magnitude of vx and vy:
We can find vx using the following trigonometric rule of a right triangle:
cos α = adjacent / hypotenuse
cos 15° = vx / 195 m/s
195 m/s · cos 15° = vx
vx = 188 m/s
The horizontal component of the velocity is 188 m/s
To calculate the y-component we will use the following trigonometric rule:
sin α = opposite / hypotenuse
sin 15° = vy / 195 m/s
195 m/s · sin 15° = vy
vy = 50 m/s
The vertical component of the velocity is 50 m/s.
Answer:
Car radiators: Water is used as coolant car radiators. Due to its high specific heat capacity, it can absorb a large amount of heat energy from the engine of the car, but its temperature does not rise too high.
Explanation:
i hope this answer your question if it s wrong please let know
Answer:
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Explanation: