Answer:
The Fizeau–Foucault apparatus is either of two types of instrument historically used to measure the speed of light. The conflation of the two instrument types arises in part because Hippolyte Fizeau and Léon Foucault had originally been friends and collaborators.
Explanation:
conduction because energy is being conducted throughout the spoon
I think it’s mechanical waves..
It's the distance between the middle of the lens to the focus.
Energy in spring:
<span>E = ½k · x²; where x = 0.15m </span>
<span>From coefficient of friction, </span>
<span>F = µ · N = µ · mg; where m = 5kg and g = 9.807m/s² </span>
<span>Work done each pass = </span>
<span>W = ∫Fdx = Force · distance </span>
<span>Just divide E by W to see how many passes, use this to figure out where it stops. </span>