Physics Waves And Oscillations Level: High School
The time needed for a water wave to change the equilibrium level to the crest is 0.5242 s .a) What fraction of a wavelength is this ?
b) What is the period of the wave ? Answer in units of s .
c) What is the frequency of the wave ? Answer in units Hz .
Physics Waves And Oscillations Level: High School
A sonar signal of frequency 2.12 x 10 to the 6 Hz has a wavelength of 1.71 mm in water .a) What is the speed of the signal in water? Answer in units of m/s .
b) What is its period in water ? Answer in units of s .
c) What is its period in air ? Answer in units of s .
Physics Waves And Oscillations Level: High School
You dip your finger into a pan of water twice each second , producing waves with crests that are separated by 0.18 m .a) Determine the frequency of these waves . Answer in units of Hz .
b) Determine the period of these water waves . Answer in units of s .
c) Determine the speed of these water waves . Answer in units of m/s .
Physics Waves And Oscillations Level: High School
Traveling Waves
Two traveling sinusoidal waves in a string are defined by the functions where y and x are in centimeters and t is seconds .a) What is the phase difference between these two waves at the point x = 5.00 cm at t = 2.00 s ?
b) What is the positive x value closest to the origin for which the two phases differ by +- pi at t = 2.00 s ? (This is were two waves add to zero) .
Physics Waves And Oscillations Level: High School
Intensity of Sound
A skyrocket explodes 100 m above the ground , the three observers are spaced 100 m apart , what is the ration of the intensity heard by observer A to that heard by observer C ?
Physics Waves And Oscillations Level: High School
Doppler Effect
A block with a speaker bolted to it is connected to a spring having spring constant k = 20 N/m as shown in the figure at “click here” . The total mass of the block and the speaker is 5 kg and the amplitude of the units motion is .5 m . If the speaker emits sound waves of frequency 440 Hz determine the lowest and highest frequencies heard by the person to the right of the speaker .
Physics Waves And Oscillations Level: High School
Interference
A pair of speakers separated by .7 m are driven by the same oscillator at a frequency of 690 Hz . An observer originally positioned at one of the speakers begins to walk along a line perpendicular to the line joining the speakers , how far will the observer be from the speaker when the first relative minimum is detected in the intensity ?
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
A 5.00 kg object on a horizontal frictionless surface is attached to a spring with k = 1000 N/m . The object is displaced from equilibrium 50.0 cm horizontally and given an initial velocity of 10.0 m/s back toward the equilibrium position . What are (a) the motions frequency , (b) the initial potential energy of the block-spring system, (c) the initial kinetic energy , and (d) amplitude ?
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
An oscillator consists of a block attached to a spring (K = 400 N/m). At some point t, the position (measured from the system’s equilibrium location), velocity, and acceleration of the block are x = 0.100 m, v = -13.6 m/s , and a = -123 m/s^2 . Calculate ,a) the frequency of oscillation .
b) the mass of the block .
c) the amplitude of the motion .
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
The velocity v(t) of a particle undergoing Simple harmonic motion is graphed in figure at “click here” . Is the particle momentarily stationary , headed toward –xm , or headed toward +xm at (a) Point A on the graph and point B ? Is the particle at –xm , at +xm , at 0, between –xm and 0,or between 0 and + xm when its velocity is represented by (c) point A and (d) point B ? Is the speed of the particle increasing or decreasing at (e) point A and (f) point B ?
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
An oscillating block-spring system has a mechanical energy of 1.00 J , and amplitude of 10.0 cm , and a maximum speed of 1.20 m/s . Finda) the spring constant
b) the mass of the block
c) the frequency of the oscillation
Physics Waves And Oscillations Level: High School
Energy of Simple Harmonic Motion
A simple harmonic oscillator has a total energy E . Determine the kinetic and potential energies when the displacement is half the amplitude , and for what value does the kinetic energy equal the potential energy ?
Physics Waves And Oscillations Level: High School
Seconds Pendulum
A “seconds” pendulum is one that moves through its equilibrium position once each second . (The period of the pendulum is 4.2 s ) The length of a seconds pendulum is 0.9921 m at Tokyo and 0.9947 m at Cambridge , England . What is the Cambridge : Tokyo ratio of these free-fall acceleration ?
Physics Waves And Oscillations Level: High School
Time Period of a Simple Pendulum
A pendulum with a period of 1 s on Earth, where the acceleration due to gravity is g, is taken to another planet , where its period is 2 s . The acceleration due to gravity on the other planet is most nearly ______ .1) ag = 4g
2) ag = g/2
3) ag = 2g
4) ag = g
5) ag = g/4
Physics Waves And Oscillations Level: High School
Total Energy of Simple Harmonic Motion
A 8.1 kg object oscillates on a spring with an amplitude of 11.8 cm with a maximum acceleration of 7.2 m/s^2 . Find the total energy . Answer in units of J .