A spring with a spring constant of 1.6 × 102

N/m is attached to a 1.7 kg mass and then set

in motion.

What is the period of the mass-spring sys-

tem?

Answer in units of s.

002 (part 2 of 2) 10.0 points

What is the frequency of the vibration?

Answer in units of Hz.

003 10.0 points

A visitor to a lighthouse wishes to determine

the height of the tower. The visitor ties a

spool of thread to a small rock to make a

simple pendulum, then hangs the pendulum

down a spiral staircase in the center of the

tower. The period of oscillation is 9.30 s.

The acceleration of gravity is 9.81 m/s2 .

What is the height of the tower?

Answer in units of m.

004 10.0 points

What is the free-fall acceleration in a location

where the period of a 2.39 m long pendulum

is 3.1 s s?

Answer in units of m/s2.

005 (part 1 of 3) 10.0 points

You dip your finger into a pan of water twice

each second, producing waves with crests that

are separated by 0.19 m.

Determine the frequency of these water

waves.

Answer in units of Hz.

006 (part 2 of 3) 10.0 points

Determine the period of these water waves.

Answer in units of s.

007 (part 3 of 3) 10.0 points

Determine the speed of these water waves.

Answer in units of m/s.

008 10.0 points

The distance between two successive crests of

a certain transverse wave is 1.42 m. Eight

crests pass a given point along the direction

of travel every 16.5 s.

Calculate the wave speed.

Answer in units of m/s.

009 10.0 points

A harmonic wave is traveling along a rope.

The oscillator that generates the wave com-

pletes 40.0 vibrations in 25.4 s. A given crest

of the wave travels 423 cm along the rope in a

time period of 12.6 s.

What is the wavelength?

Answer in units of m.

010 10.0 points

A sound wave traveling at 341 m/s is emitted

by the foghorn of a tugboat. An echo is heard

3.20 s later.

How far away is the reflecting object?

Answer in units of m.

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