#### Test 1

for SHM, the restoring force is proportional to -

displacement

the period is the time required for -

one cycle

the frequency is -

the number of cycles per second

SMH is -

sinusoidal

during SHM, the total energy is continually changing from - to -

kinetic; potential (and back)

a simple pendulum approximates SHM when?

if the amplitude is not large

when friction is present, the motion is -

damped

if an oscillating force is applied to a SHO, its amplitude depends on what?

how close the natural frequency the driving frequency is; close= large amplitude; RESONANCE

sources of waves which may be either a pulse or continuous

vibrating objects

distance between successive crests

wavelength

number of crests that pass a given point per unit time

frequency

maximum height of crest

amplitude

oscillations PERPENDICULAR to the direction of wave motion

transverse

oscillations PARALLEL to the direction of wave motion

longitudinal

energy per unit time crossing unit area (W/m^2)

intensity

angle of reflection is equal to what?

angle of incidence

when two waves pass through the same region of space, they -

interfere; can be constructive or destructive

nodes occur when?

when there is no motion (in between loops/at ends)

antinodes occur when?

where the amplitude is maximum

waves refract when?

upon entering a medium of different wave speed and around obstacles

what can be said about velocity and acceleration during the course of motion (when an object is oscillating back and forth at the end of a spring)

1. the object can have nonzero velocity and nonzero acceleration simultaneously
2. the object can have zero acceleration and nonzero velocity simultaneously
3. the object can have zero velocity and nonzero acceleration simultaneously

the oscillation frequency of a system (where a mass is attached to a horizontal spring) can be increased how?

decreasing mass

when approximating sin theta=theta, the angle must be specified how?

a pendulum too slowly can be sped up how?

shortening the string

two waves on a rope going towards one another will do what?

pass through each other

A student attaches one end of a Slinky to the top of a table. She holds the other end in her hand, stretches it to a length ?, and then moves it back and forth to send a wave down the Slinky. If she next moves her hand faster while keeping the length of t

decreases

one cycle of periodic processes

period

max displacement from equilibrium position

amplitude

max height of a crest/depth of a trough relative to the normal level

amplitude

The frequency of a wave increases. If the speed of the wave remains constant, what happens to the distance between successive crests?

distance between successive crests decreases

Two wave pulses pass each other on a string. The pulse traveling toward the right has positive amplitude, whereas the pulse traveling toward the left has equal amplitude in the negative direction. What happens when they occupy the same region of space at

destructive interference occurs

at what displacement of a SHO is the energy half kinetic and half potential? (in terms of A)

+-A/sq. root (2)