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- A wave on a string is driven by a string vibrator, which oscillates at a frequency of 100.00 Hz and an amplitude of 1.00 cm. The string vibrator operates at a voltage of 12.00 V and a current of 0.20 A. The power consumed by the string vibrator is P=IV . Assume that the string vibrator is 90% efficient at converting electrical energy into the energy associated with the vibrations of the string. The string is 3.00 m long, and is under a tension of 60.00 N. What is the linear mass density of the string?Energy from the Sun arrives at the top of Earth’s atmosphere with an intensity of 1400 W/m2. How long does it take for 1.80109 J to arrive on an area of 1.00 m2?A sound wave in air has a pressure amplitude equal to 4.00 103 Pa. Calculate the displacement amplitude of the wave at a frequency of 10.0 kHz.
- A string with a mass of 0.30 kg has a length of 4.00 m. If the tension in the string is 50.00 N, and a sinusoidal wave with an amplitude of 2.00 cm is induced on the string, what must the frequency be for an average power of 100.00 W?A cable with a linear density of =0.2 kg/m is hung from telephone poles. The tension in the cable is 500.00 N. The distance between poles is 20 meters. The wind blows across the line, causing the cable resonate. A standing waves pattern is produced that has 4.5 wavelengths between the two poles. The air temperature is T=20C . What are the frequency and wavelength of the hum?A piano wire with mass 3.00 g and length 80.0 cm is stretched with a tension of 25.0 N. A wave with frequency 120.0 Hz and amplitude 1.6 mm travels along the wire. (a) Calculate the average power carried by the wave. (b) What happens to the average power if the wave amplitude is halved?
- (a) Determine the speed of transverse waves on a string under a tension of 55.0 N if the string has a length of 2.00 m and a mass of 3.50 g. m/s(b) Calculate the power required to generate these waves if they have a wavelength of 16.0 cm and an amplitude of 6.50 cm.A piano wire with mass 2.60g and length 81.0cm is stretched with a tension of 30.0N . A wave with frequency 110 Hz and amplitude 1.40 mm travels along the wire. (a)Calculate the average power carried by the wave. (b)What happens to the average power if the wave amplitude is halved?(a) Determine the speed of transverse waves on a string under a tension of 95.0 N if the string has a length of 2.00 m and a mass of 6.50 g. m/s(b) Calculate the power required to generate these waves if they have a wavelength of 16.0 cm and an amplitude of 3.50 cm. kW
- A wave is represented by y=(3.00m)sin(2.5t - 3.14x). Find the (a) amplitude, (b) angular velocity, (c) frequency, (d) wave number, (e) wavelength, and (f) speed of the wave. (Okay, since i've submitted the question already and the letter a, b and c were already answered please help me answer letter d, e , and f) the computed (a) amplitude= 3m , (b) the angular velocity is 2.5 rad/s, (c) the frequency of the wave is 0.398 Hz.. please do check if it's correctTwo traveling sinusoidal waves are described by the wave functions y, = 4.75 sin [¤(3.75x – 1230t)] y, = 4.75 sin [¤(3.75x – 1230t – 0.250)] where x, y,, and y, are in meters and t is in seconds. (a) What is the amplitude of the resultant wave function y, + y,? (b) What is the frequency of the resultant wave function? HzA longitudinal wave of frequency 220hz travels down a copper rod of radius 8.00mm. The average power in the wave is 6.50μW. a) Find the wavelength of the wave. B) Find the amplitude of the wave. ( ρcopper = 8.9 × 10^3kg/m^3 ; Elastic moduli of copper = 14 × 10^10N/m^2 )