define pitch

The following are associated with musical notes: A amplitude B intensity C pitchD timbre (quality) E speed.Which of the above Q1 is determinedby the fundamental frequency of the note?Q2 is determined by the presence of overtones? Q3 is constant for all sounds produced by an orchestra? Q4 can be used to distinguish between different musical instruments? (L). Questions 5-8The diagrams which follow show the waveforms of five musical notes displayed successively on a cathode ray oscilloscope without adjusting its controls.Which waveform shows Q5 the note with the greatest number of overtones? Q6 the note of largest amplitude? Q7 the note with the highest pitch? Q8 the note with the lowest frequency? (L)Q9 (a) Define the terms wavelength, frequency and velocity as applied to. a wave. State a relalionship between them.(b) Describe, in detail, an experiment you would carry out to measure the speed of sound in air. Explain how the result would be calculated from your measurements,(c) State two differences between an electromagnetic wave and a sound wave, both of wavelength 1 metre.(d)Name two types of electromagnetic wave with wavelengths less than 1 metre. (C)Q10 Which one of the following is not an example of a transverse wave? A a sound wave B a light waveC a wave on the surface of the bathwater D a wave on a skipping rope which is shaken E a ripple in a flag on a windy day (NEA)Qll A man sees 'steam' start to come from a factory whistle and 3 seconds later he hears the sound. The velocity of sound in air is 360 m s"1. The distance from the'man to the whistle (in metre) isA 120. B 780. C 960. D 1080 E 2160. Q12 A sonar signal (a high frequency sound wave) sent vertically downwards from a J hip is reflected from the ocean floor and detected by a microphone on the keel 0.4 s after transmission. If speed of sound in water is 1500 ms-1, what is the depth, in m, of the ocean? A 150 B 300 C 600 D 3000 E 6000 (AEB) Q13 (a) Explain the meaning of the terms amplitude and frequency <A a vibration.Describe the effect of changing these two quantifies with respect to(i) the light emitted by a lamp,(ii) the sound emitted by a source of sound.The diagram shows a vibrating tuning fork. The timeitaken for a prong to go from A to B Is s.ouuWhat is the frequency of the vibration? If the velocity of sound in air is 330 m s"1 what is the wavelength of the note emitted by the fork? (AEB}Q14 Explain the difference between longitudinal and transverse waves. Give one example of each kind of wave.Explain how waves transfer energy from one place to another.Ripples are sent across a pond and a small floating object goes up and down six times in 15 seconds. If the wave crests are 40 cm apart, calculate the speed of the waves across the pond. (WjQ15 State three similarities and three differences between the water waves on a ripple tank and sound waves in air.A set of plane waves on a ripple tank reaches a portion of the tank where the water is shallower. The boundary of _ the shallow water is at an angle of approximately 45 ° to the wave fronts. Explain, with the aid of a diagram, what happens to the waves as they enter the area of shallow water.Name two types of electromagnetic waves and explain three ways in which they differ from each other. (JMB) Q16 Describe how you would find the speed with which sound travels in air, by experiment,A radio station broadcasts on a frequency of 200 000 Hz and the wavelength of its signal is 1500 m. Calculate(a) the speed of radio waves in m s"1,(b) the wavelength of the signal of another station that broadcasts on a frequency of 1250 000 Hz.State, and explain, two differences between sound waves and light waves. (C)Q17 (a) A flexible metal strip presses lightly against the teeth of a cog wheel as it rotates uniformly at 600 revolutions per minute. If the wheel has 50 teeth find (i) the frequency, and (ii) the wavelength of the note which it emits in air, given that the speed of sound in air is 340 m s"1.If the wheel is now rotated at 300 revolutions per minute, explain whether the time taken for the sound to reach a distant observer will be charged.What will be the effect, if any, on the pitch of the note emitted if the temperature of the surrounding air now increases by several degrees, all other factors remaining unchanged? Explain your answer, (b) Explain the meaning of (i) echo, and (ii) resonance. Describe in detail how one of these two phenomena can be used to determine the speed of sound in air. (L) Q18 A wheel has 50 spokes and rotates at 10 revolutions per second. Calculate the frequency of the note obtained by holding a card lightly against the spokes as they rotate. What would you expect to observe if a source of sound of frequency 502 Hz was placed near the card?Describe briefly how you would use a stroboscope to check the rate of rotation of the wheel. (S)