Answer:
A = 0.02 m
Explanation:
The spring constant, k = 35.5 N/m
The attached mass, m = 5.50 kg
The expression for the external force, F = (4.40 N)sin[(6.80 s⁻¹)t].....(1)
The general expression for the external force, F = F₀ sin (wt).............(2)
Comparing equations (1) and (2):
The forced frequency,
F₀ = 4.40 N
The natural frequency can be calculated using the formula:
The amplitude of oscillation of a spring-mass system in the steady state:
Answer:
the speed of light in glass is 1.52 times smaller than in a vacuum
Explanation:
The speed of light in a medium is given by:
where
c is the speed of light in a vacuum
n is the refractive index of the medium, which is a number always greater than 1.0
From the formula, we see therefore that when light enters a medium, its speed decreases.
In particular, for glass the index of refraction is
n = 1.52
Therefore, this means that the speed of light in glass is 1.52 times smaller than in a vacuum.
Answer:
C
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