PHY LAB FINALS

Question 1

change of frequency’s effect on the number of segments?

Answer 1

HIGHER frequencies result in MORE segments (nodes) in the standing wave pattern, while LOWER frequencies result in FEWER segments.

Question 2

change of frequency’s effect on the wavelength?

Answer 2

wavelength of a wave on a string is INVERSELY to the frequency.

Frequency increases = the wavelength decreases. (vice versa)

Question 3

Period (T) of a wave relation to wave speed (v)

Answer 3

inversely proportional

Question 4

Period (T) of a wave relation to wavelength

Answer 4

directly proportional

Question 5

SOUNDWAVE AND TEMPERATURE

What happens to the speed of SOUND WAVE in air when TEMPERATURE increases?

Answer 5

as the temperature increases, speed of sound in air also increases. the higher the temperature the greater speed of sound in air.

Question 6

LENGTH AND SPEED

Relation of the length of air column to the speed of sound wave?

Answer 6

inversely proportional

Question 7

LENGTH AND FREQUENCY

Relation of the length of air column to the frequency?

Answer 7

inversely proportional

Question 8

investigated the increase in resistance or in potential difference that affects the flow of current through the wire.

Answer 8

George Simon Ohm

Question 9

Ohm’s Law

Answer 9

current is DP to potential difference of V and IP to the resistance of circuit.

It states that the current I flowing through a circuit is directly proportional to the potential difference V and inversely proportional to the resistance R of the circuit.

Question 10

R

Answer 10

Resistance in ohms, Ω

Question 11

V

Answer 11

Potential difference in volts

Question 12

A / I

Answer 12

current in amperes

Question 13

VOLTAGE AND CURRENT: What happened to the voltage across the resistance box as the current through it was increased? What is the relationship between voltage and current when resistance is fixed?

Answer 13

Voltage increases as the Current increases . Thus, voltage is DIRECTLY PROPORTIONAL to current.

Question 14

CURRENT AND RESISTANCE: current when resistance is increased?What is the relationship between current and resistance when voltage is constant?

Answer 14

The current decreases as the resistance increases. Thus, current is INVERSELY PROPORTIONAL to resistance.

Question 15

RESISTANCE AND VOLTAGE: What happened to resistance when voltage is increased? What is the relationship between voltage and resistance when current is constant?

Answer 15

The resistance increases as voltage increases. Thus, resistance is DIRECTLY PROPORTIONAL to voltage.

Question 16

MAXIMUM EXCURSION of a particle of the medium from the particles undisturbed position.

Answer 16

Amplitude

Question 17

horizontal length of one cycle of the wave.

Answer 17

wavelength

Question 18

time required for one complete cycle.

Answer 18

period

Question 19

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

Answer 19

frequency

Question 20

The Economy Resonance Tube is designed for

Answer 20

the study of resonance

Question 21

what is the velocity of sound at 0 °C

Answer 21

331.45 m/s.

Question 22

refraction of light observation from the experiment

Answer 22

the wave nature of the light causes its direction to be altered as it passes from one medium to the other.

Question 23

type of image produced when the object distance is GREATER THAN the focal length

Answer 23

the image formed is a real, inverted, and DIMINISHED image.

Question 24

type of image produced when the object distance is EQUAL to the focal length

Answer 24

The image formed is known as a real, inverted, and SAME SIZE image.

Question 25

type of image produced when the object distance is LESS THAN the focal length?

Answer 25

the image formed is a virtual, upright, and magnified image.