Solve This Suppose the intensity over the surface of a hemisphere is ( 10^-4 watt /cm2). The area of the surface is about ( 25 x 10^6 cm^2) The acoustic power output would have to be 2400 watts O 2500 watts O 2600 watts O 2700 watts O
Q: How to find frequency
A: Frequency of the wave
Q: Find a wave speed of a certain 1.5-mm-long wave with a frequency of 2.7 HzHz .
A:
Q: What are the three longest wavelengths for standing sound waves in a 84-cm-long tube under the…
A:
Q: Calculate the change in length ΔL. Using ΔL, calculate wavelength λ. Calculate the speed of sound.…
A: Given- In table 1 Frequency f=500 Hz We know that v=fλ and c=fλ ∆L=nλλ=∆Ln Mode L ∆L λ v 1…
Q: In determining the distance to a cloud, a meteorologist in a TV station uses radar and notes that a…
A: The distance to the cloud is,
Q: You place your ear onto a steel railroad track and hear the sound of a distant train through the…
A: Let ta be the time taken to reach the sound through air and ts be the time taken to reach the sound…
Q: What is the intensity in watts per meter squared of 90.7 dB sound?
A: Given that: Sound in decibels β=90.7 dB It is required to find the intensity in watts per meter…
Q: Two waves interfere. The intensity of one of them (alone) is 13.2 times the intensity of the other.…
A:
Q: A mobile base station in an urban environment has a power measurement of 25 µW at 225 m. If the…
A:
Q: In a solar system far far away, the sun's intensity is 200 W/m2 for a planet located a distance R…
A:
Q: A speaker has a diameter of 0.30 m. (a) Assuming that the speed of sound is 343 m/s, find the…
A: Let f1 denote the frequency of the sound wave, λ1 denote the wavelength of the sound wave and let v…
Q: Why do we use Ultrasound waves for cleaning, and not regular audible sound waves or even infrasound…
A: Ultrasonic waves (sounds having frequency greater than 20,000 Hz) are used in sonar because: 1.…
Q: wave of frequency 550 Hz has wave velocity of 350 m/s. (b) Find the phase difference between two…
A: Given: Frequency, f = 550 Hz velocity, v = 350 m/s t = 0.002 s
Q: Your local AM radio station broadcasts at a frequency of f = 1290 kHz. The electric-field component…
A:
Q: Q 1.8: Destructive wave interference cancels a wave's A crests crests and troughs C troughs
A:
Q: A wave is moving with a speed of 400 m/s and has a wavelength of 2 m. What is the frequency of this…
A: formula : wavelength = speed / frequency λ = cν
Q: A stone is dropped from the top of a cliff. The splash it makes when striking the water below is…
A:
Q: The frequency is 1.5 Hz and the amplitude is o.75 cm. The wave speed of this wave is 6.10 cm/s. What…
A: Given:The frequency is, f=1.5 HzAmplitude is, A=0.75 cmWave speed, v=6.10 cm/s
Q: You are moving at 90 km/h toward a train which is moving toward you at 75 mi/h. The train blows its…
A:
Q: Design an air-filled rectangular conducting waveguide axb such that the center frequency of this…
A: To design an air-filled rectangular conducting waveguide with the desired specifications, we need to…
Q: A wave with a length of 5m will likely experience more diffraction than a wave with a length of 5mm.…
A: Diffraction is the bending of waves around obstacles and spreading waves as they pass through small…
Q: A wave has a wavelength of 6.03618 x 10-7 m and frequency of 4.96659 x 10¹4 Hz. What is its speed?
A: Given data - wavelength (λ) = 6.03618×10-7 m…
Q: Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of…
A: Given that the the power of laser beam and radius of a circular spot then we have to determine the…
Q: A cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength…
A: The frequency of the wave f= Number of complete cycles per second = 2Hz The wave length λ = 8.8 cm…
Q: If a wave pulse with an amplitude of 2 cm overlaps with a wave pulse that has an amplitude of -4 cm,…
A: Given data: Amplitude of first wave pulse is, A1=2 cm. Amplitude of second wave pulse is, A2=-4 cm.
Q: A 2m high water wave travels past an observer. Every 3s he sees 5 full waves pass him. Each peak is…
A: # Frequency = Number of Cycles per second. Since one full wave corresponds to one full cycle, So…
Q: 2) List two differences between sound waves and light waves
A: To write two difference between sound wave and light wave.
Q: En a solar system far far away, the sun's intensity is 100 W/m² for a planet located a distance R…
A: Comment: We'll answer the first question since the exact one wasn't specified. Please submit a new…
Solve This
Suppose the intensity over the surface of a hemisphere is ( 10^-4 watt /cm2). The area of the surface is about ( 25 x 10^6 cm^2) The acoustic power output would have to be
2400 watts O
2500 watts O
2600 watts O
2700 watts O
Step by step
Solved in 2 steps
- For sound waves, the Doppler formula for frequency shift differs slightly between the two situations: (i) source at rest; observer moving.and (ii) source moving; observer at rest. The exact Doppler formulas for the case of light waves in vacuum are, however, strictly identical for these situations. Explain why this should be so. Would you expect the formulas to be strictly identical for the two situations in case of light travelling in a medium?ULF (ultra low frequency) electromagnetic waves, produced inthe depths of outer space, have been observed with wavelengths inexcess of 29 million kilometers. What is the period of such a wave?Find the ratio of the maximum wavelength to minimum wavelength for waves having frequencies in the range between 4.5x 109 Hz and 2.5 x1010 Hz. ?max/?min =
- A point source emits electromagnetic energy at a rate of (9.93x10^1) Joules per second. What is the intensity of the electromagnetic radiation (9.8070x10^0) m from the source? Express your result with three significant figures in mW/m2. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer Hide hint for Question 1 Calculate the wave intensity at the specified distance.Give the relationship between a wave's velocity, frequency, and wavelength. Show that this equation is dimensionally correct. Note that a graph of λ vs 1/f should be a straight line. What is its slope and y-intercept?The amplitude of an acoustic wave decreases from 30 pascals to 6 pascals. If the initial power of the wave was 900 watts, what is the wave’s final power ?
- Write down the equation of progressive wave having a frequency of 56 Hz, wave length 6.0 metre and amplitude 1.0 cm.(2) A 62 W (60 J/s) light bulb is 8.5% efficient, i.e. only 8.5% of the electrical energy it consumes (62 J each second) is converted to light and the rest is converted to waste heat. What is the light intensity 10 cm from the bulb in W/m2? (answer: 42 W/m?)Current Attempt in Progress (a) Neil A. Armstrong was the first person to walk on the moon. The distance between the earth and the moon is 3.85 x 108 m. Find the time it took for his voice to reach the earth via radio waves. (b) Someday a person will walk on Mars, which is 5.60 × 1010 m from the earth at the point of closest approach. Determine the minimum time that will be required for a message from Mars to reach the earth via radio waves. (a) Number i Units (b) Number i Units
- Please see the attached part (a) of the question with the diagram. b) The energy flow to the earth associated with sunlight is about 1.4 kW/m2. Find the maximum values of E and B for a sinusoidal wave of this instensity.Imagine you are at a location where some incident light source provides light at an intensity of 25 W/m^2. Now you move 5 time closer to the light source (aka your distance is 1/5 its initial value). What is the intensity of the light at this new location7-