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(a) Suppose a certain large fish starts out at a depth where the absolute pressure is 2.1 atm and with gas bladder volume 5.0 × 10-4 m3. It then dives down to a depth where its swim bladder is compressed to 3.5 × 10-4 m3 (before the gas gland has had a chance to act). Assume that the temperature of the gas ??? remains constant at the internal temperature of the fish's body, 5°C. What is the absolute pressure at that new depth?
(b) To achieve neutral buoyancy at its new location, the fish uses its gas gland to re-inflate its swim bladder to the original volume. What is the mass (in grams or kilograms) of oxygen that the fish must extract from its blood to do that? The added gas, too, has a temperature of 5°C.
A 2-kg box is initially sliding at a speed of 15 m/s on a horizontal surface. What is the coefficient of kinetic friction between the box and the horizontal surface
Use the Rydberg equation to calculate the wavelength in nm of the light emitted, What is the color of the light emitted
A rock of mass 43.00 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 252N. What is the magnitude of the acceleration of the rock.
A charged particle with charge +5.0 ?C is initially at rest. It is accelerated through a potential difference of 500 V. What is the kinetic energy of this charged particle
A container with a one-liter capacity at 27°C is filled with helium to a pressure of 2 atm. (1 atm = 1.0x10^5 N/m^2.) How many moles of helium does it hold
A block starting atop a frictionless hemispherical dome starts sliding from rest. Write down the two equations of motion of the block in terms of r and ? (i.e. use polar coordinates).
A 32.0 kg hammer strikes a steel spike 2.70 cm in diameter while moving with speed of 24.0 m/s. The hammer rebounds with speed 11.0 m/s after 0.110 s. What is an average strain in the spike all through the impact.
In the solar system frame, two events are measured to occur 3.0 hours apart in time and 1.5 hours apart in space. What is the time seperation between the events in the alien's frame
A Carnot engine whose high-temperature reservoir is at 580 K takes in 520 J of heat at this temperature in each cycle and gives up 309 J to the low-temperature reservoir.
A cannon ball is fired at an angle of 22 above horizontal with an initial speed v0 = 300 m/s, reaching a maximum height h before hitting the ground. What is the maximum height h reached by the ball
two objects m1=5.10 kg and m2=3.25 kg connected by light spring passing over a light frictionless pulley. determine the speed of each object when the two pass each other
Heather and Mathew walked eastward with a speed of 9.8 m/s. If it takes those 34 min. to walk to the store, how far have they walked.
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