Answer:
degree
Explanation:
given data:
accoding to the snell's law
where n1 is refracting index of air = 1
n2 is refracting index of glass = 1.55
putting all value to get angle mad by incident ray with normal
degree
4
1 answer:
Answer:
50 m/s
Explanation:
The motion of the roller coaster car parameters are;
The initial speed of the roller coaster, v = 2 m/s
The distance to reach the bottom, Δd = 200 meter
The time it takes to reach the bottom, Δt = 4 seconds
The speed at the bottom of the tracks = 22 m/s
The average speed, = Δd/Δt
∴ = (200 m)/(4 s) = 50 m/s
The average speed of the roller coaster ride over the 200 m drop, = 50 m/s
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