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Most species of fish have expandable sacs, commonly known as "swim bladders," that enable fish to rise in the water by filling the bladders with oxygen collected by their gills and to sink by emptying the bladders into the surrounding water. A freshwater fish has an average density equal to 1.05 kg/L when its swim bladder is empty. How large must the volume of oxygen in the fish's swim bladder be if the fish is to have neutral buoyancy? The fish has a mass of 0.82 kg. Assume the density of oxygen in the bladder is equal to air density at standard temperature and pressure.
How large must the volume of oxygen in the fish's swim bladder be if the fish is to have neutral buoyancy?
q. a 2500-kg sport utility vehicle travelling at 92 kmh can be stopped in 0.25 s if it hits a concrete wall. assume a
A model of a red blood cell portrays the cell as a spherical capacitor a positively charged liquid sphere of surface area A separated from the surrounding negatively charged fluid by a membrane of thickness t. Estimate the capacitance of the cell
an elementary particle of mass m completely absorbs a photon after which its mass is 1.01m.a what was the energy of the
There is evidence that elephants communicate via infrasound,generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
The temperature of 2.00 moles of argon gas is lowered from 2.80 x 10^2 K to 1.90 x 10^2 K. Find the change in the average kinetic energy per atom.
how far from a 53.4 mm focal-length lens must an object be placed if its image is to be magnified 2.20 and be real?
Two identical conducting spheres each having a radius of 0.500 cm are connected by a light 1.70 m long conducting wire, Determine the tension in the wire
The two surfaces of a plastic converging lens have equal radii of curvature of 25.0cm, Calculate the index of refraction of the plastic
An airplane maintains a speed of 630 km/h relative to the airit is flying through as it makes a trip to a city 750km away to the north. what time interval is required if the plane flies through aheadwind blowing at 35 km/h toward the south?
The magnetic force acting on a wire that is perpendicular to a 3.7 T uniform magnetic field is 6.4 N. If the current in the wire is 5.0 A, what is the length of the wire that is inside the magnetic field? Answer in units of m.
ms.smith is planning her classroom. she knows she has approximately 12 linear meters of available wall space. she likes
A force in the negative direction of an x axis is applied for 24 ms to a 0.40 kg ball initially moving at 10 m/s in the positive direction of the axis. What is the ball's speed just after the force is applied
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