Answer:k = 10.83 N/m²
Explanation: The angular frequency (ω), spring constant (k) and mass is related by the formulae below
ω = √k/m
But ω = 2πf, where f = frequency.
f = number of oscillations /time taken
Number of oscillations = 14, time taken = 11s
f = 14/11 = 1.27Hz.
ω = 2×22/7×1.27
ω = 7.98 rad/s.
By substituting this parameters into ω = √k/m
Where ω = 7.98rad/s, m = 170g = 170/1000 = 0.17kg.
7.98 = √k/0.17
By squaring both sides
(7.98)² = k/ 0.17
k = (7.98)² × 0.17
k = 10.83 N/m²
The answer is...
82,144
+
145,552
-------------
227,696
I think the correct answer from the choices listed above is option C. A lens is transparent material with one or two curved surfaces that can refract light. A lens<span> is made of a </span>transparent material<span> having an index of refraction of 2.0. One side of the </span>lens<span> is flat, and the other convex with a radius of curvature of 25 cm.</span>
