A block attached to an ideal spring of spring constant 15 N/m executes simple harmonic motion on a frictionless horizontal surface.
At time t = 0 s, the block has a displacement of -0.90 m, a velocity of -0.80 m/s, and an acceleration of +2.9 m/s2 . The mass of the block is closest to
A) 2.3 kg
B) 2.6 kg
C) 4.7 kg
D) 9.4 kg
Question 2
A light beam having a wavelength of 470 nm in air is directed into glycerine at an angle of 75.0 with the normal in air. Glycerine has a refractive index of 1.47. (c = 3.0 108 m/s)
(a) What are the frequency and wavelength of the light in the glycerine?
(b) What angle does the light beam make with the normal in the glycerine?
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