Answer:
6.97 E 16
Explanation:
Frequency is a function of velocity of light to it's wavelength.
Mathematically written as
F = Velocity / wavelength
Velocity of light = 3 x 10^8
Wavelength =430 nm =430 x 10^-9 m
converting wavelength from nanaometer to meter we divide by 10^9
Frequency = (3 x 10^8)/(430 x10^-9) =6.97 E 16
Answer:
D=1.54489 m
Explanation:
Given data
S=6.10 mm= 0.0061 m
To find
Depth of lake
Solution
To find the depth of lake first we need to find the initial time ball takes to hit the water.To get the value of time use below equation
![S=v_{1}t+(1/2)gt^{2} \\ 0.0061m=(0m/s)t+(1/2)(9.8m/s^{2} )t^{2}\\ t^{2}=\frac{0.0061m}{4.9m/s^{2} }\\ t=\sqrt{1.245*10^{-3} }\\ t=0.035s](https://tex.z-dn.net/?f=S%3Dv_%7B1%7Dt%2B%281%2F2%29gt%5E%7B2%7D%20%5C%5C%200.0061m%3D%280m%2Fs%29t%2B%281%2F2%29%289.8m%2Fs%5E%7B2%7D%20%29t%5E%7B2%7D%5C%5C%20t%5E%7B2%7D%3D%5Cfrac%7B0.0061m%7D%7B4.9m%2Fs%5E%7B2%7D%20%7D%5C%5C%20%20t%3D%5Csqrt%7B1.245%2A10%5E%7B-3%7D%20%7D%5C%5C%20t%3D0.035s)
So ball takes 0.035sec to hit the water
As we have found time Now we need to find the final velocity of ball when it enters the lake.So final velocity is given as
Since there are (4.50-0.035) seconds left for (ball) it to reach the bottom of the lake
So the depth of lake given as:
![D=|vt|\\D=|0.346m/s*4.465s|\\D=1.54489m](https://tex.z-dn.net/?f=D%3D%7Cvt%7C%5C%5CD%3D%7C0.346m%2Fs%2A4.465s%7C%5C%5CD%3D1.54489m)
The energy absorbed by photon is 1.24 eV.
This is the perfect answer.
Boy wat the hell is that it looks like physics to me