To generate resonant sounds, pulses of air are sent into the chamber and interfere with new...
To generate resonant sounds, pulses of air are sent into the chamber and interfere with new pulses being blown. What is this called?
Select one:
a. superposition of waves
b. pulse waves
c. loudness
d. high pressure waves
Homework Answers
Combination of two pulses (wave) is called superposition of waves.
Option A is correct.
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To generate resonant sounds, pulses of air are sent into the chamber and interfere with new...
Part A A medical ultrasound imaging system sends out a steady stream of very short pulses....
Part A A medical ultrasound imaging system sends out a steady stream of very short pulses. To simplity analysis, the reflection of one pulse should be received before the next is transmitted t the syshem is being used to create an image of tissue 15 cm below the skin, what is the minimum time between pulses? Use values given in table id necessary Express your answer with the appropriate units. Medium Air (0 C) Air (20 C) Helium (0 C)...
A laser used in LASIK eye surgery produces 50 pulses per second. The wavelength is 192...
A laser used in LASIK eye surgery produces 50 pulses per second. The wavelength is 192 nm (in air) and each pulse lasts 11 ps. The average power emitted by the laser is 122.8 mW and the beam diameter is 0.8 mm. (a) In what part of the EM spectrum is the laser pulse? The wavelength of the laser light is longer/shorter than visible light. (b) How long (in centimeters) is a single pulse of the laser in air? d...
Please help with question 2,3 and 4 and filling out the table Lab 12. Sound Waves...
Please help with question 2,3
and 4 and filling out the table
Lab 12. Sound Waves and Beats Introduction Sound waves consist of a series of air pressure variations. A Microphone diaphragm records these variations by moving in response to the pressure changes. The diaphragm motion is then converted to an electrical signal. Using a Microphone and an interface, you can explore the properties of common sounds. The first property you will measure is the period, or the time for...
A two-chambered tank is connected to a high pressure pipeline containing air. The bottom chamber of...
A two-chambered tank is connected to a high pressure pipeline containing air. The bottom chamber of the tank contains air that is initially at 450 kPa and 300 K due to the force of an adiabatic, weighted piston (piston face area is 1.5 square meters). The piston separates the top and bottom chambers. The top chamber and bottom chamber each have an initial volume of 2.0 cubic meters. Other conditions and properties are shown in the attached figure. The valve...
A 10 cm long rectangular waveguide is designed with side lengths of 3 mm and 4mm....
A 10 cm long rectangular waveguide is designed with side lengths of 3 mm and 4mm. The waveguide is filled with a dielectric that has a refractive index n=1.3. a) Over what frequency range is this waveguide single mode? A 50 GHz signal is modulated into one short pulse, then sent into the waveguide. b) How many modes are supported by the waveguide? Also identify them by their name (for example TE32). c) Resulting from one pulse sent at the...
Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy...
Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy (in the range of 1012 W) pulses of electromagnetic waves that last for an extremely short time (a few nanoseconds). These short pulses scramble the interior of a cell without causing it to explode, as long pulses would do. We can model a typical such cell as a disk 4.6 μm in diameter, with the pulse lasting for 4.8 ns with an average power...
2. Air is steadily discharged from a large chamber in which the pressure is 500 kPa,...
2. Air is steadily discharged from a large chamber in which the pressure is 500 kPa, the temperature is 30°C, and the velocity is effectively zero through a nozzle, as shown in Fig. 2. Assuming one dimensional isentropic flow, find: (a) if the pressure at some section of the nozzle is 80 kPa, the Mach number, temperature, and velocity at this section. (b) if the nozzle has a circular cross-section with a diameter of 12 mm at the section discussed...
1)Thin film semiconductor materials for solar cells are made within a vacuum chamber which is pumped...
1)Thin film semiconductor materials for solar cells are made within a vacuum chamber which is pumped out in a process that removes as much of the air as possible (depending on the quality of the pump). Then high purity materials can be made that are free of contamination. In a typical pumping process, the pressure in the vacuum chamber is decreased to 1 x 10-7 Torr (1 Torr = 133.3 Pa) (See: en.wikipedia.org/wiki/Sputtering) Assume that the vacuum chamber and the...
explain please *Question 160: Resonant Frequencies A piece of pipe is closed at one end and...
explain please
*Question 160: Resonant Frequencies A piece of pipe is closed at one end and open at the other. The standing wave with the lowest frequency (the fundamental) occurs at frequency 100 Hz. What is the frequency of the first overtone (the next highest standing wave frequency)? Select one: a. 200 Hz b. 150 Hz c. No other standing waves are possible in a pipe open at one end only d. 67 Hz e. 300 Hz The correct answer...
1. Two waves of the same wavelength interfere - in which case(s) below, will the two...
1. Two waves of the same wavelength interfere - in which case(s) below, will the two waves experience fully destructive interference? (Note: π is "pi") A) the two waves are 90o degrees apart in phase B) the two waves are 2π radians apart in phase C) the two waves are π radians apart in phase D) the two waves are 1.5 wavelengths apart in phase E) the two waves are one wavelength apart in phase F) the two waves are...
Part A A medical ultrasound imaging system sends out a steady stream of very short pulses. To simplity analysis, the reflection of one pulse should be received before the next is transmitted t the syshem is being used to create an image of tissue 15 cm below the skin, what is the minimum time between pulses? Use values given in table id necessary Express your answer with the appropriate units. Medium Air (0 C) Air (20 C) Helium (0 C)...
Please help with question 2,3
and 4 and filling out the table
Lab 12. Sound Waves and Beats Introduction Sound waves consist of a series of air pressure variations. A Microphone diaphragm records these variations by moving in response to the pressure changes. The diaphragm motion is then converted to an electrical signal. Using a Microphone and an interface, you can explore the properties of common sounds. The first property you will measure is the period, or the time for...
A two-chambered tank is connected to a high pressure pipeline containing air. The bottom chamber of the tank contains air that is initially at 450 kPa and 300 K due to the force of an adiabatic, weighted piston (piston face area is 1.5 square meters). The piston separates the top and bottom chambers. The top chamber and bottom chamber each have an initial volume of 2.0 cubic meters. Other conditions and properties are shown in the attached figure. The valve...
2. Air is steadily discharged from a large chamber in which the pressure is 500 kPa, the temperature is 30°C, and the velocity is effectively zero through a nozzle, as shown in Fig. 2. Assuming one dimensional isentropic flow, find: (a) if the pressure at some section of the nozzle is 80 kPa, the Mach number, temperature, and velocity at this section. (b) if the nozzle has a circular cross-section with a diameter of 12 mm at the section discussed...
1)Thin film semiconductor materials for solar cells are made within a vacuum chamber which is pumped out in a process that removes as much of the air as possible (depending on the quality of the pump). Then high purity materials can be made that are free of contamination. In a typical pumping process, the pressure in the vacuum chamber is decreased to 1 x 10-7 Torr (1 Torr = 133.3 Pa) (See: en.wikipedia.org/wiki/Sputtering) Assume that the vacuum chamber and the...
explain please
*Question 160: Resonant Frequencies A piece of pipe is closed at one end and open at the other. The standing wave with the lowest frequency (the fundamental) occurs at frequency 100 Hz. What is the frequency of the first overtone (the next highest standing wave frequency)? Select one: a. 200 Hz b. 150 Hz c. No other standing waves are possible in a pipe open at one end only d. 67 Hz e. 300 Hz The correct answer...
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