waves

Question 1

Which of the following parameters of a wave do not change when a wave transfers mediums?
Velocity
Frequency
Period
Wavelength

Answer 1

Frequency and period

Question 2

Wave motion in a medium transfers:
Energy
Mass
Both energy and mass
Neither mass nor energy

Answer 2

Energy

Question 3

Which of the following waves have the same velocity?  Note that this refers to the velocity of the wave itself and not the medium in which it travels
1) y= 2 sin (3x6t+ 5)
2) y= 4 sin (3x4t5)
3) y= 2 cos (2x6t+ 5)
4) y= 4 cos (2x4t5)
1 & 3
3 & 4
1 & 2
1 & 4

Answer 3

1 and 4

Question 4

A string on a cello is twice as long as a string on a violin (between points where the string is held fixed). If the strings have the same mass per unit length and are under the same tension, what can you say about their fundamental frequency?
A. The fundamental frequency of the violin string is a quarter of that of the cello
B. The fundamental frequency of the violin string is half of that of the cello
C. The fundamental frequency of the violin string is double that of the cello
D. The fundamental frequency of the violin string is quadruple that of the cello

Answer 4

The fundamental frequency of the violin string is double that of the cello