Physics Waves And Oscillations Level: High School
Intensity of Waves
The intensity of a particular earth quake is measured to be 2.25 x 10^6 W/m^3 at a distance of 126 km from the source . What was the intensity when is passed a point only 3.87 km from the source ? Give answer in W/m^2 .a) What was the energy passed through an area of 4.75 m^2 at a distance of 3.87 km ?
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
A 1.96 kg mass vibrates according to the equation x = 0.626 cos 8.02 t where x is in meters and t in seconds. Determine the amplitude.a) Calculate the frequency
b) Calculate the total energy
c) Calculate the kinetic energy when x = 0.284
d) Calculate the potential energy when x = 0.284 m
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
A partially filled water bottle of mass 0.273 kg and almost the same size and shape of the balsa block is tossed into the water . At what frequency would you expect the bottle to bob up and down ? Assume SHM .
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
A balsa wood block of mass 48.1 g floats on a lake , bobbing up and down at a frequency of 2.32 Hz . What is the value of the effective spring constant of the water ?
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
A spring stretches 3.9 cm when a 10-g object is hung from it . The object is replaced with a block of mass 25-g that oscillates in simple harmonic motion . Calculate the period of motion .
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
A .40 kg object connected to a light spring with a force constant of 19.6 N/m oscillates horizontal surface determine .a) The speed of the object when the spring is compressed 1.5 cm
b) For what value of x does the speed equal one-half the maximum speed ?
Physics Properties Of Matter Level: High School
Solids (Young’s Modulus )
A spring is hung from a ceiling , and an object attached to it’s lower end stretches the spring by a distance of 5.00 cm from its unstretched position when the system is in equilibrium . If the spring constant is 47.5 N/m . Determine the mass of the object .
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
A 1.85 kg mass is attached to a spring and placed on a horizontal , smooth surface . A horizontal force of 19.6 N is required to hold the mass at rest when it is pulled 0.210 m from its equilibrium position (the origin of the x axis) . The mass is now released from rest with an initial displacement of xi = 0.210 m ,and it subsequently undergoes simple harmonic oscillations .a) Calculate the force constant of the spring .
b) Calculate the frequency of the oscillations .
c) Calculate maximum speed of the mass .
d) Calculate the maximum acceleration of the mass .
e) Calculate the total energy of the oscillating system .
f) Calculate the speed when the displacement equals one third of the maximum value .
g) Calculate the acceleration when the displacement equals one third of the maximum value .
Physics Waves And Oscillations Level: High School
Simple Harmonic Motion
A large block P executes horizontal simple harmonic motion as it slides a frictionless surface with a frequency of f = 1.49 Hz . Block B rests on it and the coefficient of static friction between the two is µs = 0.650 . What maximum amplitude of oscillation can the system have if block B is not to slip ?
Physics Waves And Oscillations Level: High School
Speed of Wave
A vibrator moves one end of a rope up and down to generate a wave . The tension in the rope is 58 N . The frequency is then doubled . To what value must the tension be adjusted , so the new wave has the same wavelength as the ole one ?
Physics Kinematics Level: High School
One Dimensional Motion
Consider a freight train . Suppose 15 boxcars pass by in a time of 12.0 s and each has a length of 15.0 m .a) What is the frequency at which each boxcar passes ?
b) What is the speed of the train ?
Physics Properties Of Matter Level: High School
Solid (Bulk Modulus )
A copper cylinder and a brass cylinder are stacked end to end , Each cylinder has a radius of 0.30 cm . A compressive force of F = 6000 N is applied to right end of the brass cylinder . Find the amount by which the length of the stack decreases .
Physics Properties Of Matter Level: High School
Solid (Bulk Modulus )
The femur is a bone in the leg whose minimum cross-sectional area is about 4.1 10-4 m2 . A compressional force in excess of 6.3 104 N will fracture this bone .a) Find the maximum stress that this bone can withstand .
b) What is the strain that exists under a maximum-stress condition ?
Physics Properties Of Matter Level: High School
Solids (Shear Modulus)
A copper cube , 0.32 m on a side , is subjected to two shearing forces, each of magnitude F = 5.5 106 N .Find the angle , which is one measure of how the shape of the block has been altered by shear deformation .
Physics Properties Of Matter Level: High School
Solids (Young’s Modulus)
A tow truck is pulling a car out of a ditch by means of a steel cable that is 9.6 m long and has a radius of 0.50 cm . When the car just begins to move , the tension in the cable is 730 N . How much has the cable stretched ?