Physics Waves And Oscillations Level: Misc Level
A simple pendulum, with a 4.4 kg mass and 1 ength 75 cm, is released from rest at an angle of 50 degrees.
(a) To what height does the mass swing on the other side?
(b) what is the speed of the mass at the bottom of the swing?
Physics Waves And Oscillations Level: Misc Level
We can hear sounds around corners, but we cannot see around corners: yet both sound and light are waves. Explain the difference
Physics Waves And Oscillations Level: Misc Level
Does Huygens principle apply to sound waves? to water waves?
Physics Waves And Oscillations Level: Misc Level
the ship in figure travels along a straight line parellel to the shore and is a distance Y=630 m from the shore. The ships radio recieves simultanious signals of the same frequency from antennas at points A and B which are seperated by X= 890 m. the signals interfere constructively at point C, which is equidistant from A and B. The signal goes through the minimum at point D which is even with B. Determine the wavelength of the radio waves. (in m)
a.) 920.8 b.) 1077.4 c.) 1260.5 d.) 1474.8 e.) 1725.5 f.) 201.9 g.) 2362.1 h.) 2763.6
Physics Waves And Oscillations Level: Misc Level
the speed of sound in air is 346 m/s. If an audible sound has a frequency of 3000 Hz, what is its wavelength in meters?
a.) 1.57*10^-2 b.) 2.08*10^-2 c.) 2.77*10^-2 d.) 3.69*10^-2 e.) 4.90*10^-2 f.) 6.52d*10^-2 g.) 8.67*10^-2 h.) 1.15*10^-1
Physics Waves And Oscillations Level: Misc Level
a pendulum has a period on the earth of 1.04 s. What is its period on the surface of Pluto where g=0.78 m/s^2?
a.) 3.26 b.) 3.69 c.) 4.17 d.) 4.17 e.) 4.71 e.) 5.32 f.) 6.01 g.) 6.80 h.) 7.68
Physics Waves And Oscillations Level: Misc Level
An ultrasonic beam used in scanning body tissues has a frequency of 1.2 M H z. If the speed of sound in a particular tissue is 1540 m /s and the limit of resolution is equal to one wavelength, what is the size of the smallest detail that can be resolved?
Physics Waves And Oscillations Level: Misc Level
A visitor to a lighthouse wishes to determine the height of the tower. She ties a pool of thread to a small rock a simple pendulum, whieh she hangs down the center of a spiral staircase. The period of oscillation is 9.40 s. what is the height of the tower?
Physics Waves And Oscillations Level: Misc Level
When four people with a combined mass of 350 kg sit down in a car, they find that the car drops 0.80 cm lower on its springs. Then they get out of the car and bounce it up and down. What is the frequency of the car's vibration if its mass (empty) is 1650 kg?
Physics Waves And Oscillations Level: Misc Level
How many beats are heard when two organ pipes, each open at both ends, are sounded together if one pipe is 44 cm long and the other is 65 cm long?
Physics Waves And Oscillations Level: Misc Level
Horseshoe bats use the Doppler effect to determine their location. A horseshoe bat flies toward a wall at a speed of 12 m/s while emitting a sound of frequency 35 kHz. What is the beat frequency between the emission frequency and the echo?
Physics Waves And Oscillations Level: Misc Level
A supersonic plane moves at speed v plane, the speed of sound is v sound. If the conical shock wave makes an angle with the direction of motion of the plane (the figure below), we find that sin =v sound /v plane. Suppose a plane is flying at supersonic speed at an elevation where the speed of sound is 329 m/s. The shock wave cone form with an angle =21.0% with the direction of motion of the plane.
(a) What is the Mach number for this plane?
(b)How fast is the plane traveling? m/s
Physics Waves And Oscillations Level: Misc Level
An organ pipe that is open at both ends has a fundamental frequency of 385 Hz at 0 %C. What is the fundamental frequency for this pipe at 20.0%C?
Physics Waves And Oscillations Level: Misc Level
(a) What is the pressure amplitude of a sound wave with an intensity level of 120.5 dB in air?
(b) What force does this exert on eardrum of area 0.580 10-4 m?
Physics Waves And Oscillations Level: Misc Level
A sound wave with an intensity level of 80.4 dB is incident on an eardrum of area 0.600 10-4 m2. How much energy is absorbed by the eardrum in 3.0 minutes?
