Answer:
1) λ < 2d, 2) nfrared imaging technique, 3) each color there is a different index of refraction
Explanation:
We are going to answer the three questions
1) When x-rays pass through matter in order to be dispersed, their wavelength must be of the order of the length of separation in the atoms and molecules of the body, in solid bones this length is similar and they scatter and reflect the x-rays therefore they can be observed, the fat and the soft tissue have a much greater separation therefore the x-rays cannot be reflected and consequently it is not observable by this technique.
2) At airports they use the infrared imaging technique, where the image is taken for the infrared wavelength, which is the heat part of the electromagnetic spectrum; consequently, when the image is viewed, the hottest areas appear brighter and, since when a person has a virus, his temperature rises, his temperature rises, it is possible to observe people with a higher temperature.
3) when white light hits a prism it is refracted with the equation
n₁ sin θ₁ = n₂ sin θ₂
where the incidence of refraction depends on the wavelength, therefore for each color there is a different index of refraction and consequently the light is separated in its different colors.
1) The distance travelled by the electron is
2) The time taken is
Explanation:
1)
The electron in this problem is moving by uniformly accelerated motion (constant acceleration), so we can use the following suvat equation
where
v is the final velocity
u is the initial velocity
a is the acceleration
s is the distance travelled
For the electron in this problem,
is the initial velocity
v = 0 is the final velocity (it comes to a stop)
is the acceleration
Solving for s, we find the distance travelled:
2)
The total time taken for the electron in its motion can also be found by using another suvat equation:
where
v is the final velocity
u is the initial velocity
a is the acceleration
t is the time taken
Here we have
v = 0
And solving for t, we find the time taken:
Learn more about accelerated motion:
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⁻Answer:
Ne=1.8 *10^37
Explanation:
Current density J=Iₐ /(πr²)
= 8/(π* (1.5*10⁻³/2)²)= 4.53*10⁶ A/m²
Drift velocity = J/ne =4.53*10⁶ /(8.5×1028 *1.6×10−19 ) = 3.33 ×10−4 m/s
volume = πr²h= π * (1.5*10⁻³/2)² * 3 = 5.3 ×10−6 m³
Ne=1.8 *10^37
Hello <span>18huntsprea
</span>
Question: <span>Where might water be found on the moon?
Answer: Near The Poles (C)
Reason: Water is most likely to be discovered near the poles. The South pole is the most likely one.
Hope This Helps!
-Chris</span>
The temporarily be the output of a 100-W light bulb is 148 watt.
To find the answer, we need to know about the resistance of the bulb.
<h3>What's the mathematical expression of resistance of the bulb in term of power and voltage?</h3>
- Mathematically, power= voltage²/resistance
- So, resistance= voltage²/power
<h3>What's the resistance of the bulb, if 115 volt is applied to 100 watt bulb?</h3>
Resistance= 115²/100= 132.25 Ohm
<h3>What's the power of the bulb, if 140 volt is applied to it?</h3>
Power= voltage²/resistance
= 140²/132.25
= 148watt
Thus, we can conclude that the temporary output of the bulb is 148 watt.
Learn more about the electric power here:
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