Waves Flashcards
number of waves produced by a source per unit time
frequency
cycles per second
frequency
Hertz or Hz
frequency
wavelength
distance between two successive points in phase with each other
Meter or M
wavelength
vector quantity of a wave
velocity
fill in the blanks: All EM waves are propagated with same speed equal to ——
3.0 x 10 (raise to 8) meters per second
consists of magnitude and direction
velocity
displacement travelled by the wave per unit time
velocity
Meters per second (m/s)
velocity
symbol of wavelength
lambda
fill in the blanks: All nonzero digits are ———
significant
fill in the blanks: —— between nonzero digits are significant
zeros
fill in the blanks: Zeros at the —— of a measurement are never significant
beginning
fill in the blanks: Zeros at the end of a measurement are significant if they contain a ——– ——
decimal point
fill in the blanks: A — on top of a zero makes it significant
bar
disturbance in a medium
wave
fill in the blanks: For addition and subtraction, the —- —- determine the final answer
place values
fill in the blanks: For multiplication and division, the number of ———– —— determine the final answer
significant digits
shorten expressions of very large or very small measurements
scientific notations
fill in the blanks: If the quantity is very small and you want to express it in scientific notation, the exponent is a ——– number
negative
fill in the blanks: If the quantity is very big and you want to express it in scientific notation, the exponent is a ——– number
positive
fill in the blanks: The first coefficient in a scientific notation comes ———- - — –.
between 1 and 10
What letter represents Planck’s constant?
h
What is the expression for h?
6.63 x 10 (raise to -34) J s
What does J mean?
joules
highest point in a transverse wave
crest
lowest point in a transverse wave
trough