A simple harmonic oscillator takes 12 s to undergo five complete vibrations. Find (a) The period (b) The frequency (in hertz) (c) The angular frequency (in rad/s)

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

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answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.