A convex lens focuses light to a single focal point. What wave behavior is responsible for the light rays coming together at the
focal point?
Here is the photo.
https://lh5.googleusercontent.com/eh8oGTs-v3tx_mRRUCrXEn6z1Zs8nl7V1BMaNagYhXHO2LJ7KD6KoGFVJoedU5ZrV_QJINPziBmDDYIyrN5YiPR2fqIsUVjnRKK5jBdPxY03KVOaFi46KADJ-ArS=w314
Answer choices:
A-Reflection
B-Refraction
C-Absorption
D-Diffraction
Here is the photo.
https://lh5.googleusercontent.com/eh8oGTs-v3tx_mRRUCrXEn6z1Zs8nl7V1BMaNagYhXHO2LJ7KD6KoGFVJoedU5ZrV_QJINPziBmDDYIyrN5YiPR2fqIsUVjnRKK5jBdPxY03KVOaFi46KADJ-ArS=w314
Answer choices:
A-Reflection
B-Refraction
C-Absorption
D-Diffraction
1 answer:
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Answer:
k = 52.2 N / m
Explanation:
For this exercise we are going to use the conservation of mechanical energy.
Starting point. When it is 30 m high
Em₀ = K + U = ½ m v² + m g h
Final point. Right when you hit the water
= K_{e} = ½ k x²
in this case the distance the bungee is stretched is 30 m
x = h
as they indicate that there are no losses, energy is conserved
Em₀ = Em_{f}
½ m v² + m g h = ½ k h²
k =
let's calculate
k =
k = 52.2 N / m
Answer:
Potential energy = 73.575 kJ
Kinetic energy = 135kJ
Total mechanical energy = 208.575 kJ
Explanation:
The potential energy of a body is given by the expression, PE = mgh, where m is the mass of the body, g is the acceleration due to gravity value and h is the height of the body.
The kinetic energy of a body is given by , where v is the velocity and m is the mass of body.
Total mechanical energy = Kinetic energy + Potential energy
PE = mgh = 75*9.81*100 = 73575 J = 73.575 kJ
Total mechanical energy = Kinetic energy + Potential energy = 135+73.575
= 208.575 kJ