Physics Waves And Oscillations Level: High School
The prong of a tuning fork moves back and forth when it is set into vibration . The distance the prong moves between its extreme positions is 2.27 mm . If the frequency of the tuning fork is 441.0 Hz , What are the maximum velocity and the maximum acceleration of the prong ? Assume SHM .
Physics Waves And Oscillations Level: High School
.Doppler effect
Astronomers find that the light emitted by a particular element at one edge of the Sun has a slightly higher frequency than light from that element at the opposite edge . What do these measurements tell us about the Sun’s motion ?Physics Waves And Oscillations Level: High School
A piano string with a length of 1.15 m and a mass of 20.0 g is under a tension of 6.30 x 10^3 N .a) What is the fundamental frequency of the string when it is struck ?
b) What are the frequencies of the next two harmonics ?
Physics Waves And Oscillations Level: High School
To stir a mixture of liquids consistently and gently , a biologist designs a simple mechanical system consisting of a horizontal spring attached to a beaker on the slippery . Teflon surface . She pours two liquids with a total mass of 100 g into the beaker ,which has a mass of 50.0 g . She then pulls on the beaker , stretching the spring . On releasing the beaker from rest (t =0) , she sets the system in motion with an amplitude of 5.00 cm . To avoid spilling and to promote gentle mixing , the frequency is designed to be exactly 0.300 Hz .a) What is the required spring constant .
b) What is the displacement of the beaker from equilibrium at time t = 2.00 s ?
Physics Waves And Oscillations Level: High School
A boy in a boat rocks the boat 14 times in 28 s . The boat undergoes a total displacement (from lowest to highest position) of 0.14 cm on each side . The boy notices his waves hitting shore 20 m away in 25 s later .a) What is the amplitude of the wave ?
b) What is the angular frequency ?
c) What is the wave speed and angular wave number (k) of the wave ?
d) What is the equation of the wave if the wave travels in the negative x direction ?
e) What is the displacement of the wave at x = 4 and t = 17 ?
Physics Waves And Oscillations Level: High School
If a distance to a sound is halved , how will the sound intensity level change ?
Physics Waves And Oscillations Level: High School
A block of mass m = 5 kg connected to a massless spring undergoes simple harmonic motion (SHM) on a horizontal frictionless surface . When released at t = 0 the block starts at Xo = +0.4 m with speed Vo =0 , The block then reaches its maximum speed Vmax at x = 0 when t = (pi/4) s .(a) Write down the general expression for x (t) , the position at any time t for this SHM, and find the position x at time t = (2*pi/3) s .
(b) Find the shortest time that it takes for the block to travel from x = +0.8 A to x = -0.6 A .
Physics Waves And Oscillations Level: High School
If 10 kg is supported by the tension in the string of 10 m in length and 20 gram in mass , what is the speed of the wave along the string ?
Physics Waves And Oscillations Level: High School
If two crests of the wave arrive every 10 seconds and the distance between adjacent crests is 3 m . find the speed of the wave .
Physics Waves And Oscillations Level: High School
A block attached to a spring oscillates along a horizontal frictionless floor with the equation of motion .a. Amplitude.
b. where the block is @ t = 2 sec
c. frequency and speed.
d. spring constant if the mass of block is 2 kg
e. force on the block @ 2 seconds.
f. velocity of block @ 2 seconds.
Physics Waves And Oscillations Level: High School
A 5 kg block extent a coil spring on 3 cm from equilibrium . If the same spring is set to oscillate while 15 kg object is attached , find the frequency of the motion .
Physics Waves And Oscillations Level: High School
A vertical spring has an equilibrium length of 3.0 meters. When a 10-kg mass is attached , its new equilibrium length is 3.2 meters . What is the spring constant ?a. 30 kg-m
b. 2 kg-m
c. 50 N/m
d. 490 N/m
e. 5.0 kg-m
Physics Waves And Oscillations Level: High School
A 76 kg man in a 5.6 kg chair tilts back so that all his weight is balanced on two legs of the chair . Assume that each leg makes constant with the floor over a circular area of radius 1.2 cm .Find the pressure exerted on the floor by each leg .
The acceleration of gravity is 9.8 m/s^2 . Answer in units of Pa .
Physics Waves And Oscillations Level: High School
Find the amplitude of the motion . Answer in units of m .
Physics Waves And Oscillations Level: High School
A 0.414 kg mass is attached to a spring and executes simple harmonic motion with a period of 0.516 s . The total energy of the system is 3 J .Find the force constant of the spring . Answer in units of N/m .
