PHYSIC FINALS EXP 7

Question 1

the maximum excursion of a particle of the medium form the particles undisturbed position

Answer 1

Amplitude

Question 2

the horizontal length of pne cucle of the wave

Answer 2

Wavelength

Question 3

time required for one complete cycle

Answer 3

period

Question 4

related to the period and has units of Hz or s-1

Answer 4

Frequency

Question 5

A strethced string has many mode of ___________. if the string is fixed at both ends then there must be a node at each end. it may vibrate ___________ segment; in which case the ________ of the string is eqault to __________ of the wave.

Answer 5

vibration
single
Lenght
1/2 Wavelenth

Question 6

it may also vibrate in _____ segments with a node at each end and one node on the _______; then the wavelength is equal to the _____ of the string. it may may also vibrate with
largee integer number of segments. The length of the string equals some integer number of ____ wavelengths

Answer 6

two segments
middle
lenght
half

Question 7

Get the mass of string using

Answer 7

Top Loading Balance in kilograms

Question 8

Adjust frequency to produce three modes of vibration using

Answer 8

Aine Wave Generator

Question 9

• designed for the study of reasonance in a column of air.

Answer 9

Economy Reasonance Tube

Question 10

What does tube set includes?

Answer 10

• an outer tube and inner tube with a scale.
• Removable plug

Question 11

Two rows on the scale?

Answer 11

• one measuring the resonating length when the plug is in place.
• one for when the plug is removed.

Question 12

relatively selecrive responsw of an object or a system that vibrates in step or phase, with an externally applied oscillatory fore.

Answer 12

Reasonance

Question 13

Two ways in measuring the velocity of sound in air.

Answer 13

• Calculate the velocity of sound from the observed room temperature

v = 331.45 m/s + 0.61 T(C)

Question 14

V = 331.45 m/s + 0.61 T (C)

Answer 14

v is the velocity of the sound in the air m/s at the temperature T (C). The velocity of sound at 0 is 331.45 m/s

Question 15

the second way to measure the velocity of the sound from the wavelenth of a known frequency of sound. The equation is

Answer 15

v = frequency x wavelenth

Question 16

Does the change in the frequency have any effect on the number of segments? Wavelength?

Answer 16

Yes, when the frequency increases, the number of segments in a standing wave also increases. This because wavelength is inversely proportional to frequency. Therefore, the number of segments in a standing wave is inversely proportional to its wavelength.

Question 17

How is the period related to the wave speed? Wavelength?

Answer 17

The period is inversely proportional to wave speed, meaning that as wave speed increases, the period decreases.

The period is also directly proportional to wavenlength leads ro a longer period.

Question 18

what happens to the spred of sound wave when temperature increases?

Answer 18

As the temperature rises, so does the speed of sound waves within it. This occurs because sound waves consists of particles, such as atoms or molecules, that are continuosly in motion. With increased temperature, these particles move with greater speed and collide more frequently with one another.

Question 19

How os the length of air column related to speed of sound wave. Frequency?

Answer 19

The length of an air colum is onversely porportional to the speed of a sound wave, and it is directly proportional to the frequency of harmonics.