Physics Waves And Oscillations Level: Misc Level
A cassette player is said to have a signal -to noise ratio of 63dB, whereas for a CD player it is 89 dB, What is the ratio of intensities of the signal and the background noise for each device?
Cassette player
CD player
Physics Waves And Oscillations Level: Misc Level
A 3.80-kg mass vibrates according to the equation x=0.710 cos 7.80 t, where x is in meters and t in seconds.
a. Determine the amplitude.
b. Determine the frequency .
c. Determine the total energy.
d. Determine the kinetic energy and potential energy when x=0.284 m.
Kinetic energy=
Potential energy=
Physics Waves And Oscillations Level: Misc Level
A fisherman notices that wave crests pass the bow of his anchored every 2.6 s. He measures the distance between two crests to be 7.2 m. How fast are the waves traveling?
Physics Waves And Oscillations Level: Misc Level
A pendulum has a period of 0.80 s on Earth. What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth?
Physics Waves And Oscillations Level: Misc Level
A pendulum makes 36 vibrations in exactly 60 s.
a. What is its period?----- s/cycle
b. What is its frequency?
Physics Waves And Oscillations Level: Misc Level
An object with mass 3.0 kg is attached to a spring with spring stiffness constant k=3.2 E2 N/m and is executing simple harmonic motion. When the object is 0.030 m from its equilibrium position, it is moving with a speed of 0.44 m/s.
a) Calculate the amplitude of the motion.
b) Calculate the maximum velocity attained by the object.
Physics Waves And Oscillations Level: Misc Level
An elastic cord vibrates with a frequency of 4.1 Hz when a mass of 0.67 kg is hung from it. What is its freqency if only 0.42 kg hangs from it?
Physics Waves And Oscillations Level: Misc Level
Rank the following in order of largest wavelength to smallest wavelength: green light, a proton traveling at x105m/s, ultraviolet light, a toaster oven sitting perfectly still, a student walking along at 3 mph.
Physics Waves And Oscillations Level: Misc Level
A 0.025 kg object vibrates in simple harmonic motion at the end of a spring. If the maximum displacenent (amplitude)of the object is 3.0 cm, and the period of vibration is 0.50s, what is the maximum acceleration of the object?
Physics Waves And Oscillations Level: Misc Level
After a bungee jump, a 690N Student bobs up and down at the end of the bungee cord at a frequency of 0.23Hz. What is the spring constant of the bungee cord?
Physics Waves And Oscillations Level: Misc Level
A 0.70 kg object vibrates at the end of horizontal spring 9 k=75N /m) along a frictionless surface.What is the frequency of the vibration?
Physics Waves And Oscillations Level: Misc Level
The restoring force acting on a 0.60 kg object on a spring is 1.2 N.If the displacement of the object is 0.025m, what is the spring constant?
Physics Waves And Oscillations Level: Misc Level
a 0.06 kg mass is vibrating at the end of a spring. if the spring constant is 26 N/m and the maximum displacement of the mass in 0.15 m, what is the speed of the object at
a) the equilibrium position?
b) at its most compressed position?
Physics Waves And Oscillations Level: Misc Level
The acceleration due to gravity on the moon is 1/6th that of the Earth,s. How long would a pendulum arm need to be to have a frequency of 0.50 Hz(a"moon"clock)?
Physics Waves And Oscillations Level: Misc Level
A pendulum has a bob with a mass of 2.0 kg If it takes 1.5s for that mass to travel from one side of the pendulum to the other, what is the length of the arm of the pendulum.
