Answer:
the googles are 5.3 m from the edge
Explanation:
Given that
depth of pool , d = 3.2 m
Now, let i be the angle of incidence
a laser pointer 0.90 m above the edge of the pool and laser beam enters the water 2.2 m from the edge
⇒tan i = 2.2/0.9
solving we get
i = 67.8°
Using snell's law ,
n1 ×sin(i) = n2 ×sin(r)
n1= refractive index of 1st medium= 1
n2= refractive index of 2nd medium = 1.33
r= angle of reflection
therefore,
r = 44.1°
Now,
distance of googles = 2.2 + d×tan(r)
distance of googles = 2.2 + 3.2×tan(44.1)
distance of googles = 5.3 m
the googles are 5.3 m from the edge
Yes I have to make my answer 20 characters long so imma just type this sentence
Explanation:
may I ask what it is on because I might be able to help out
Answer:
Hey!
Your answer is "First-Class Lever"
Explanation:
Here's an example!!
The fulcrum (the triangle) is between the load and effort! (in this case called the FORCE)
Hope this helps!