harmonic motion and mechanical waves

Question 1

What is wiggle in time called? In time and space?

Answer 1

vibration; wave

Question 2

what is meant by the period of a pendulum?

Answer 2

complete to and fro swing

Question 3

how does a sine curve relate to the wave description?

Answer 3

a sine curve us a pictorial representaion

Question 4

how may vibrations per second are represented in a radio wave of 101.7 MHz

Answer 4

101.7 million vibrations per second

Question 5

in one word, what is it that moves from one source to receiver in wave motion

Answer 5

energy

Question 6

in what direction are the vibrations relative to the direction of wave travel in a transverse wave

Answer 6

perpendicular to the direction of wave travel

Question 7

the wavelength of a transverse wave is the distance between successive crests. What is the waveleneght of longitudinal

Answer 7

the distance between successive compressions or racefactions

Question 8

what is the superposition principle?

Answer 8

when more thatn one wave occupies the same space at the same time, the displacements add

Question 9

what kinds of waves show interference

Answer 9

all kinds

Question 10

can standing waves be formed of tranasvers waves or longitudinal

Answer 10

both

Question 11

can the doppler effect, does frequency change? does speed change?

Answer 11

can be observed with both transverse and longitudinal

Question 12

how fast must a bug swim to keep up with waves it produces? How fast to prodce a bow wave

Answer 12

at wave speed; produce a bow wave faster than wave speed

Question 13

how does the v shape of a bow wave depend on the speed of the source

Answer 13

the faster the source, the narrower the v shape

Question 14

t or f: a sonic boom occurs only when an aircraft is breaking through the sound barreir

Answer 14

false, the air craft may have exceeded the speed of sound earlier