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A sinusoidal sound wave moves through a medium and is described by the displacement wave function s(x,t)=2.00 cos(15.7x-858t), where is micrometers, x is in meters, and t is in seconds. Calculate the amplitude, wavelength and the speed of the wave.
In a factory, three machines produce noise with intensity levels of 85 dB, 90 dB, and 93 dB. When all three are running, what is the intensity level?
Determine the velocity of sound in mercury, which has bulk modulus of 2.8×10^10 and the a density of 1.36×10⁴ kg/m³.
Why is a water tower generally placed on top of a hill? If the hill is 50 m high, can it supply water to the top floor of a 100 m tall office building? If not, how does water get to that floor?
A cylindrical tank is 6 m high and us full of water. An orifice 1 m from the top is opened. How far from the bottom of the tank will the jet strike the ground.
Water flows through a venturi meter. At the constricted section where the area is 24 cm³, the pressure is 10.2 N/cm², and at the section where the area is 64 cm², the pressure is 18.0 N/cm². Determine the velocities of water in the larger and smaller pipes and the rate of flow.
It has been estimated that a man's heart is about 33 cm below his brain. Considering the density of human blood to be 1.1x10³ kg/m³, what pressure must the heart produce to supply blood to the brain?
Water flows from pipe of diameter 1.5 inch at an average velocity of 3.5 ft/s. Determine the rate of flow in gallons per minute if 1 gal=231 in³.
A body is immersed in a liquid in such a way that it is closely in contact with the bottom and there is no liquid beneath the body. Is there a buoyant force on the body? Explain
A man of mass 65 kg stands on a solid floating on water. If the solid has a density of 0.6 g/cm³ and the man standing on it is just barely out of the surface of the water, determine the volume of the solid.
