Answer: R = 28 degree
Explanation:
The given parameters are:
Refractive index n = 1.52
Incident angle I = 45 degree
According to Snell law,
Sin I/Sin R = n
Where
I = angle of incidence
R = angle of refraction
n = refractive index
Substitute all the parameters into the formula
1.52 = sin 45/ sin R
Make sinR the subject of formula
Sin R = sin 45/1.52
Sin R = 0.46520
R = sin^-1(0.46520)
R = 27.72 degree
Therefore, the angle of refraction will be 28 degrees approximately.
Answer:
x22.=L1cosθ1θ1. + L2cosθ2θ2.
y22.=-L1sinθ1.θ1. + L2sinθ2.θ2.
θ1.=θ1.+θ1..dt
Explanation:
the step-by-step solution is in the image
To solve this problem we must resort to the definition of Normal Force, in which, it is the component of a contact force that is perpendicular to the surface that an object contacts.
where,
m=mass
g= Gravitational Acceleration
Normal force that the force exerts on the ladder is the weight of the ladder, then
F=mg
F=18*9.8
F=176.58N
Therefore normal force the floor exerts on the ladder is 176.58N
It’s states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
Answer:
The weeping willow is a gentle, graceful tree, but willow tree roots are very shallow and invasive. This means it's not the best backyard tree option for many
Explanation: