Answer:
it means match the correct words
Answer:
50.5 m
Explanation:
We are given that
![\theta=33.5^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%3D33.5%5E%7B%5Ccirc%7D)
Velocity=v=19.5m
Vertical component of initial velocity=![v_y=vsin\theta=19.5sin33.5=10.8m/s](https://tex.z-dn.net/?f=v_y%3Dvsin%5Ctheta%3D19.5sin33.5%3D10.8m%2Fs)
Height=h=-14.5 m
Acceleration due to gravity=![g=-9.8m/s^2](https://tex.z-dn.net/?f=g%3D-9.8m%2Fs%5E2)
![s=v_yt+\frac{1}{2}gt^2](https://tex.z-dn.net/?f=s%3Dv_yt%2B%5Cfrac%7B1%7D%7B2%7Dgt%5E2)
![-14.5=10.8t+\frac{1}{2}(-9.8)t^2](https://tex.z-dn.net/?f=-14.5%3D10.8t%2B%5Cfrac%7B1%7D%7B2%7D%28-9.8%29t%5E2)
![4.9t^2-10.8t-14.5=0](https://tex.z-dn.net/?f=4.9t%5E2-10.8t-14.5%3D0)
By solving we get
![t=-0.9, t=3.1](https://tex.z-dn.net/?f=t%3D-0.9%2C%20t%3D3.1%20)
Time cannot be negative
Therefore, time=3.1 s
Horizontal component of velocity=![v_x=19.5cos33.5=16.3m/s](https://tex.z-dn.net/?f=v_x%3D19.5cos33.5%3D16.3m%2Fs)
Distance=![x=v_xt=16.3\times 3.1=50.5 m](https://tex.z-dn.net/?f=x%3Dv_xt%3D16.3%5Ctimes%203.1%3D50.5%20m)
Hence, the golf ball travel horizontally before it hits the water=50.5 m
Answer:
The refractive index of glass, ![\mu_{g} = 1.367](https://tex.z-dn.net/?f=%5Cmu_%7Bg%7D%20%3D%201.367)
Solution:
Brewster angle is the special case of incident angle that causes the reflected and refracted rays to be perpendicular to each other or that angle of incident which causes the complete polarization of the reflected ray.
To determine the refractive index of glass:
(1)
where
= refractive index of glass
= refractive index of glass
Now, using eqn (1)
![tan{53.8^{\circ}} = \frac{\mu_{g}}{1}](https://tex.z-dn.net/?f=tan%7B53.8%5E%7B%5Ccirc%7D%7D%20%3D%20%5Cfrac%7B%5Cmu_%7Bg%7D%7D%7B1%7D)
![\mu_{g} = tan53.8^{\circ}](https://tex.z-dn.net/?f=%5Cmu_%7Bg%7D%20%3D%20tan53.8%5E%7B%5Ccirc%7D)
![\mu_{g} = 1.367](https://tex.z-dn.net/?f=%5Cmu_%7Bg%7D%20%3D%201.367)
Hard surfaces reflect sound back into the room, while carpets help to absorb the sound so it reflects less