A small earthquake starts a lamppost vibrating back and forth. The amplitude of the vibration of the top of the lamppost is $6\mathrm{.}4$ cm

at the moment the quake stops, and $7\mathrm{.}0$ s

later it is $1\mathrm{.}6$ cm

$.$

Part A

What is the time constant for the damping of the oscillation?

Express your answer with the appropriate units.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

$=$

nothing

nothing

Request Answer

Part B

What was the amplitude of the oscillation $3\mathrm{.}5$ s

after the quake stopped?

Express your answer with the appropriate units.