Physics Waves And Oscillations Level: High School
Which of these list is in order of increasing wavelength ?a) first harmonic, second harmonic , third harmonic
b) second harmonic, third harmonic , fourth harmonic
c) third harmonic , second harmonic , first harmonic
Physics Waves And Oscillations Level: High School
The range of human hearing isa) 40-40,000 hz
b) 10-10,000 hz
c) 20-20,000 hz
Physics Waves And Oscillations Level: High School
Which travels faster in air ?a) transverse wave
b) a fighter jet (f16)
c) a race car
Physics Waves And Oscillations Level: High School
Sound
On the day when the speed of sound in air is 340 m/s , a lighting bolt is observed , and the resultant thunderclap is heard 5 seconds afterwards , About how far away was the lighting bolt ?a) 1700 m
b) 88000
c) 1020 m
Physics Waves And Oscillations Level: High School
A transverse traveling wave is described by the equation , where x and y are in meters , and t in seconds . The wavelength and frequency of the wave are :a) 0.25 m and 2 Hz
b) 0.25 m and 0.5 Hz
c) 4 m and 0.5 Hz
d) 4 m and 2 Hz
Physics Waves And Oscillations Level: High School
A sound level of 0 dB corresponds to an intensity of ?a) 10^-6 W/m^2
b) 0 W/m^2
c) 10^-8 W/m^2
d) 10^-12 W/m^2
Physics Waves And Oscillations Level: High School
Doppler effects
A train is approaching a station and blows its horn with a frequency of 200 Hz . If the train has a speed of 25 m/s and the speed of sound is 350 m/s , What is the frequency of sound heard by the people standing on the platform ?a) 186 Hz
b) 190 Hz
c) 200 Hz
d) 215 Hz
Physics Waves And Oscillations Level: High School
A piano string of length 1.50 m and mass density 26.0 mg/m vibrates at a (fundamental) frequency of 450.0 Hz .a) What is the speed of the transverse string waves ?
b) What is the tension ?
c) What are the wavelength and frequency of the sound wave in air produced by vibration of the string ? The speed of sound in air at room temperature is 340 m/s .
Physics Waves And Oscillations Level: High School
A traveling sine wave is the result of the superposition of two other sine waves with equal amplitudes , wavelengths , and frequencies . The two component waves each have amplitude 4.00 cm . If the resultant wave has amplitude 6.78 cm , What is the phase difference between the component waves ? [ Hint : Let y1 = A sin (wt + kx ) and y2 = A sin (wt + kx –c). Make use of the trigonometric identity below when finding y = y1 + y2 and identify the new amplitude in terms of the original amplitude ]
Physics Waves And Oscillations Level: High School
The speed of sound in air at room temperature is 338 m/s .a) What is the frequency of a sound wave in air with wavelength 2.5 m ?
b) What is the frequency of a radio wave with the same wavelength ? (Radio waves are electromagnetic waves that travel at 3.0 x 10^8 m/s in air or in vacuum .)
Physics Waves And Oscillations Level: High School
A uniform string of length 10.0 m and weight 0.35 N is attached to the ceiling . A weight of 1.00 kN hangs from its lower end . The lower end of the strind is suddenly displaced horizontally . How long does it take the resulting wave pulse to travel to the upper end ? [Hint : Is the weight of the string negligible in comparison with that of the hanging mass ? ]
Physics Waves And Oscillations Level: High School
The amplitude of oscillation of a pendulum decays by a factor of 22.0 in 120 s . By what factor has its energy decays in that time ?
Physics Waves And Oscillations Level: High School
A 0.60 kg mass is suspended from a string , forming a pendulum . The period of this pendulum is 2.2 s when the amplitude is 2.1 cm . The mass of the pendulum is now reduced to 0.22 kg . What is the period of oscillation now , when the amplitude is 1.1 cm ?
Physics Waves And Oscillations Level: High School
A body is suspended vertically from and ideal spring of spring constant 2.9 N/m . The spring is initially in its relaxed position . The body is then released and oscillates about its equilibrium position . The motion is described by the following equation .y = (4.0 cm) Sin [(0.67 rad/s) t] What is the maximum kinetic energy of the body ?
Physics Waves And Oscillations Level: High School
Equipment to be used in airplanes or spacecraft is often subjected to a shake test to be sure it can withstand the vibrations that may be encountered during flight . A radio receiver of mass 5.22 kg is set on a platform that vibrates SHM at 101 Hz and with a maximum acceleration of 92 m/s^2 .a) Find the radio’s maximum displacement .
b) Find the radio’s maximum speed .
c) Fid the maximum net force exerted on it .
