Answer:
a)θ=71.89°
b)NO
Explanation:
Given that
For glass n= 1.38
We know that for air n'=1
The angle for total internal reflection θc given as
sin θc=n'/n
By putting the values
sin θc=n'/n
sin θc=1/1.38
θc=46.43°
n'sinθ = n sinθref
sinθref = cosθc
n'sinθ = n cosθc
1 x sinθ =1.38 x cos 46.43°
θ=71.89°
b)
NO
B.) The retina is the layer containing t<span>he light sensing nerve cells (rods and cones)
The lens helps the eye focus light on the retina, the cornea is the outer transparent structure that covers the iris and helps the eye focus, and the pupil is the opening through which light enters the eye.</span>
Answer:
The tension in the strap is 74.82 N.
Explanation:
Given that,
Angle between the horizontal and the suitcase is 36 degrees.
The distance traveled by the suitcase is 15 meters.
Let the work done by the suitcase is 908 J. We know that the work done in the vector form is given by :
![W=Fd\ \cos\theta\\\\908=F\times 15\times cos(36)\\\\F=74.82\ N](https://tex.z-dn.net/?f=W%3DFd%5C%20%5Ccos%5Ctheta%5C%5C%5C%5C908%3DF%5Ctimes%2015%5Ctimes%20cos%2836%29%5C%5C%5C%5CF%3D74.82%5C%20N)
So, the tension in the strap is 74.82 N. Hence, this is the required solution.