Answer:
28'042.56
Step-by-step explanation:
2.6 x 107=278.2
6.3 x 16= 100.8
278.2x100.8=28'042.56
c and a
by the way, thats easy. NO OFFENCE XD
Additional information to complete the question:
How long does it take for a short pulse of light to travel from one end of the glass to the other?
Express your answer in terms of some or all of the variables f and L. Use the numeric value given for n in the introduction.
T = ___________ s
Answer:
![T = \frac{15}{f}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B15%7D%7Bf%7D)
Step-by-step explanation:
Given:
Thickness og glass = L
Index of refraction n=1.5
Frequency = f
![Wavelength = \frac{L}{10}](https://tex.z-dn.net/?f=Wavelength%20%3D%20%5Cfrac%7BL%7D%7B10%7D)
λ(air) ![= \frac{L}{10}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7BL%7D%7B10%7D)
λ(glass) = λ(air) / n
= ![\frac{\frac{L}{10}}{1.5}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cfrac%7BL%7D%7B10%7D%7D%7B1.5%7D)
= ![\frac{L}{10} * \frac{1}{1.5}](https://tex.z-dn.net/?f=%5Cfrac%7BL%7D%7B10%7D%20%2A%20%5Cfrac%7B1%7D%7B1.5%7D)
= ![\frac{L}{15}](https://tex.z-dn.net/?f=%5Cfrac%7BL%7D%7B15%7D)
V(glass) = fλ(glass)
![= f * \frac{L}{15}](https://tex.z-dn.net/?f=%3D%20f%20%2A%20%5Cfrac%7BL%7D%7B15%7D)
![T = \frac{L}{V_{glass}} = \frac{15}{f}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7BL%7D%7BV_%7Bglass%7D%7D%20%3D%20%5Cfrac%7B15%7D%7Bf%7D)