A4 The fundamental. A5 One needs to know the exact length. Q0 6 Q0 An ambulance emits sound with a frequency of 2600 Hz. After 18 Q0 passing a

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1 FIRS MAJOR Figure 1 shows the snap shot of part of a transverse wave 17 traveling along a string. Which stateent about the otion 7 of eleents of the string is correct? For the eleent at A1 S, the agnitude of its acceleration is a axiu. A S, the agnitude of its acceleration is zero. A3 P, its speed is a axiu. A4 Q, its speed is zero. A5 Q, its displaceent is a axiu. A wave in a string, is given by the equation: 17 5 y(x,t) 0.4*sin(3.0*x-4*t), where x and y are in eters and t is in seconds. Calculate the agnitude of the transverse speed at x.0 and t 1.0 s. A1 3.8 /s. A 1.8 /s. A3 5.5 /s. A4 8.0 /s. A5.1 /s. 3 A point source eits sound waves which are reflected fro a 17 etal plate with air in between, as shown in figure 3. 1 Standing waves are produced in between the source and the plate. If the points R, S and are three successive nodes, what is the frequency of the wave? [Speed of sound in air is 34 /s]. A1 114 Hz. A 158 Hz. A3 5 Hz. A4 31 Hz. A5 Not enough inforation. 4 In figure, two equivalent pulses, Pulse 1 and Pulse, 17 are sent fro points A and B at the sae tie, respectively. 6 Which pulse reaches point C first? A1 Pulse 1. A Pulse. A3 Both at the sae tie. A4 31 Hz. A5 Not enough inforation. 5 wo pipes have the sae length L. Pipe B open at one end and 18 closed at the other, while pipe A open both ends. Which 6 haronic of pipe B atches the second haronic of pipe A? A1 Never atch. A he fourth. A3 he second.

2 A4 he fundaental. A5 One needs to know the exact length. 6 An abulance eits sound with a frequency of 600 Hz. After 18 passing a otorist driving (in the sae direction of the 8 abulance) with a speed of 5 /s, the otorist receives the sound with frequency of 44 Hz. Calculate the speed of the abulance. [speed of sound in air is 340 /s] A /s. A 50.0 /s. A3 5.0 /s. A /s. A5 1.0 /s. 7 he intensity of sound wave A is 800 ties that of sound wave B 18 at a fixed point fro both sources. If the sound level of sound 5 A is 110 db. What is the sound level of wave B: A1 81 db. A 50 db. A3 7.3 db. A4 690 db. A5 555 db. 8 In figure 4, two sall identical speakers are connected (in 18 phase) to the sae source. he speakers are 4.10 apart 4 and at ear level. An observer stands at X, 8.00 in front of one speaker. In the frequency range 00 Hz-500 Hz, the sound he hears will be ost intense if the frequency is: [speed of sound in air is 343 /s] A1 346 Hz. A 4 Hz. A3 500 Hz. A4 10 Hz. A5 600 Hz. 09 It is recoended to use a new teperature scale called Z. 19 On Z scale, the boiling point of water is 65.0 degrees Z and 4 the freezing point is degrees Z. o what teperature on the Fahrenheit scale would a teperature of -100 degrees Z correspond? [Note: both scales are linear] A1-159 Degrees Fahrenheit. A -100 Degrees Fahrenheit. A3-110 Degrees Fahrenheit. A4-15 Degrees Fahrenheit. A5 +15 Degrees Fahrenheit. 10 Fifty gras of ice at zero degrees Celsius is placed in a 19 theros bottle containing 100 gras of water at 6.0 degrees 7 Celsius. How any gras of ice will elt? A1 7.5 gras. A.0 gras. A3 50 gras.

3 A4 17 gras. A5 3.5 gras. 11 A cylinder with a frictionless piston contains 0. kg of 19 water at 100 degrees Celsius. What is the change in 9 internal energy of water when it is converted to stea at 100 degrees Celsius at constant pressure of 1 at. [Density of stea 0.6 kg/**3, water 10**3 kg/**3] A1 418 kj. A 45 kj. A3 333 kj. A4 6 kj. A5 113 kj. 1 0 he internal energy of a fixed ass of an ideal gas depends on 8 A1 teperature, but not volue or pressure. A pressure, but not volue or teperature. A3 volue, but not teperature or pressure. A4 teperature and pressure, but not volue. A5 teperature and volue, but not pressure. 13 A ass of an ideal gas of volue V at pressure P undergoes 0 the cyclic process shown in figure 5. At which points is the 3 gas coolest and hottest? A1 Coolest at Z and hottest at X. A Coolest at X and hottest at Y. A3 Coolest at Y and hottest at X. A4 Coolest at Y and hottest at Z. A5 Coolest at Z and hottest at Y. 14 A syste of an ideal gas undergoes the cyclic process shown 19 in figure 5. Calculate the work done by the syste along the 8 path XY. A1 90 J. A -90 J. A3 60 J. A4-60 J. A5 zero 15 In this question use: W work, Q heat, S Entropy. 19 Which of the following are state functions, i.e. path 9 independent? 1. W. Q-W 3. S 4. Q 5. Q-*W A1, 3. A Only. A3 1, and 4.

4 A4 and 5. A5 3 and he teperature of two oles of heliu gas is raised fro 0 zero degrees Celsius to 100 degrees Celsius at constant 8 pressure. Calculate the work done by the gas. A kj. A 1.0 kj. A kj. A kj. A kj. 17 A cylinder of volue.5 L contains 0.5 oles of heliu 0 [M 4.0 gras/ole] at.0 atospheric pressure. What is 8 the internal energy of the gas? A kj. A 1.0 kj. A kj. A kj. A kj. 18 A heat engine has a theral efficiency of 0%. It runs 1 revolutions per second and delivers 80 W. For each cycle 4 find the heat discharged to the cold reservoir. A1 160 W. A 00 W. A3 40 W. A4 61 W. A5 11 W. 19 wo oles of an ideal gas undergo an adiabatic free expansion 1 fro an initial volue of 0.6 L to 1.3 L. Calculate the change in entropy of gas. A1 1.9 J/K. A zero. A J/K. A4-1.9 J/K. A5-5.3 J/K. 0 Syste A (one kilogra of ice at zero degrees Celsius) is 1 added to syste B (one kilogra of water at 100 degrees Celsius) in an insulator container. Calculate the total change in entropy of syste A. A kj/k. A 1.0 kj/k. A kj/k. A kj/k. A5 Infinite.

5 displaceent 0 P Q 0 R S Distance along string Figure 1 Pulse Pulse 1 B µ 4. x 10-4 kg/ L 3.0 C A µ 1.1 x 10-4 kg/ L point source eitted waves R S reflected waves etal plate Figure Figure 3 Figure X P (N/ ) Figure 5 50 X 10 Z Y 1 4 V ( 3 )

6 Physics 10 Major1 Forula sheet Fall Seester (er 041) v v ω λf k τ µ v B ρ y y sin(kx ωt + φ) 1 P µω y v S S cos( kx ω t ) P P sin( kx ωt), P ρvωs I 1 ρ ( ω S ) v I β 10 log I o Power I Area v ± v D f f v vs φ φ y y cos sin kx ωt + y (ysinkx)cosωt nv f n, L n 1,,3,... nv f n, 4L n 1,3,5... L αl PV nr Nk L λ π φ L λ 0,1,,. 1 L + λ, 0,1,,.. γ γ 1 PV constant; V constant 3 C R for onatoic gases, v 5 R for diatoic gases F 5 C Q L, Q c E int E int Q W nc C p - C v R W PdV V Q H κa t 4 P σε A v ( 3/)k H L 3R v rs M Q nc p, Q nc v W Q h - Q c W Q Q c c ε 1-, K Q W Q h Q c c, S Q h h h C dq Constants: Pi π, labda λ 1 Liter R 8.31 J/ol K N A 6.0 x 10 3 olecules/ole 1 at 1.01 x 10 5 N/ k 1.38 x 10-3 J/K I o 10-1 W/ 1 calorie Joule 8 4 σ 5.67x10 W /( K ) icro 10-6 for water: L f 80 cal/g L v 540 cal/g c 1 cal/g.k a * b * * c a b c

Q1. For a given medium, the wavelength of a wave is:

Q1. For a given medium, the wavelength of a wave is: Phys10 First Major-091 Zero Version Coordinator: M Sunday, Noveber 15, 009 Page: 1 Q1. For a given ediu, the wavelength of a wave is: A) inversely proportional to the frequency B) independent of the frequency