A baby's mouth is a distance of 35 cm from her father's ear and a distance of 1.45 m from her mother's ear. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of A bird sings in a meadow. Part A What is the difference between the sound intensity levels heard by the father and by the mother? Express your answer in decibels. Bfather mother = Submit OF [Π ΑΣΦ Request Answer ? dB

A baseball park is filled with 4400 home-team fans. In the bottom of the ninth inning, the home team's leading batter hits a game winning home run and all 4400 fans stand and cheer. Assume that each individual fan produces a sound intensity of 10- W/m2 , as heard from the pitching mound. Part A What is the total sound intensity heard at the pitching mound? Express your answer in watts per meter squared. W/m? Submit Request Answer Part B What is the total sound intensity level at the pitching mound? Express your answer in decibels. ? dB Submit Request Answer

A guitar string is vibrating in its fundam ental mode, with nodes at each end. The length of the segment of the string that is free to vibrate is 0.389 m. The maximum transverse acceleration of a point at the middle of the segment is 8200 m/s? and the maximum transverse velocity is 3.10 m/s. Part A What is the amplitude of this standing wave? Express your answer in meters. Πνα ΑΣφ A = m Submit Request Answer Part B What is the wave speed for the transverse traveling waves on this string? Express your answer in meters per second. v = m/s Submit Request Answer

A 245 centimeter long string is clamped at both ends and has a mass of 7.00 grams. The tension in the string is 125 N. a) what is the speed of a wave on this string? The string is plucked so that it oscillates and forms a standing wave with three antinodes. b) draw a sketch of the resulting standing wave. c) Determine the wavelength and frequency of the standing wave. please show work for a,b, and c.  thank you

A sound wave is modeled with the equation y=1/4cos2π/3 θ. 1. Find the period. Explain your method. 2. Find the amplitude. Explain your method

Part B When you are standing a distance r₁ from a point source of sound, the sound intensity level is 3₁. When you move away from the source to a new distance r2, the sound intensity level drops to 3₂ = 8₁-9 dB. Determine r2/r1. Express your answer to three significant figures. 5 ΑΣΦ 7₂ 71 Submit Request Answer [g] ? 31.1.

A 1.0-m-tall vertical tube is filled with 20°C water. A tuning fork vibrating at 580 Hz is held just over the top of the tube as the water is slowly drained from the bottom. Part A At what water heights, measured from the bottom of the tube, will there be a standing wave in the tube above the water? Express your answer in meters. If there is more than one answer, enter your answers in descending order separated by commas. h = Submit 15. ΑΣΦ ΑΣΦΑ Request Answer Como ? m

During takeoff, the sound intensity level of a jet engine is 150 dB at a distance of 32 m. Part A What is the sound intensity level at a distance of 1.0 km? Express your answer with the appropriate units.

As you stand by the side of the road, a acr approaches you at a constant speed, sounding its horn, and you hear a frequency of 80.0 Hz. After the car goes by, you hear a frequency of 60.0 Hz. What is the speed of the car? The speed of sound in the air is 343 m/s. The answer shoudl be 49m/s, I am more confused on how to solve algebraically. I attached a photo of how far I made it lol.

A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the forward hemisphere, 25% toward the back. You measure an 85 dB sound intensity level when standing 1.0 m in front of and 2.5 m below the speaker. Part A What is the speaker's power output? Express your answer with the appropriate units. ► View Available Hint(s)