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The bends during flight anyone who scuba dives is advised not to fly within the next 24 h because the air mixture for diving can introduce nitrogen to the bloodstream. Without allowing the nitrogen to come out of solution slowly, any sudden air-pressure reduction (such as during airplane ascent) can result in the nitrogen forming bubbles in the blood, creating the bends, which can be painful and even fatal. Military special operation forces are especially at risk. What is the change in pressure on such a special-op soldier who must scuba dive at a depth of 20 m in seawater one day and parachute at an altitude of 7.6 km the next day? Assume that the average air density within the altitude range is 0.87 kg/m3.
The auditory canal, leading to the eardrum, is a closed pipe 2.8 cm long. Find out the approximate value (ignoring end correction) of the lowest resonance frequency.
When a 410 degrees Celsius object of 80 grams is placed in 425 grams of 17.5 degrees Celsius of water. After 5 minute, the water has warmed to 20.75 degrees celcius. What is the objects specific heat capacity
A student moves a box of books by attaching a rope to the box and pulling with a force of 90.0 N at an angle of 30.0 degrees. Find the acceleration of the box
a hiker who weighs 929 n is strolling through the woods and crosses a small horizontal bridge. the bridge is uniform
At what minimum angle, in degrees (deg), will you get total internal reflection of light traveling in water
Describe the relationship between emissions and concentrations of carbon dioxide for each scenario
The intensity of the sound wave from a jet airplane as it is taking off is 114 W/m2 at a distance of 4.3 m. What is the intensity of the sound wave
A coil lies flat on a level table top in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is the direction of the induced current in this coil as the field increases..
The range of human hearing extends from approximately 20 Hz to 20000 Hz. Find out the wavelengths of these extremes while speed of sound in air is equal to 348 m/s.
A portable electric heater uses 22 A of current. The manufacturer recommends that an extension cord attached to the heater, What is the smallest radius of copper wire that can be used in the extension cord
A solid cylinder (radius = 0.160 m, height = 0.200 m) has a mass of 14.6 kg. This cylinder is floating in water. How much of the height of the cylinder is in the oil
q1. a shell fired from a cannon has a muzzle speed the speed as it leaves the barrel of 800 fts. the barrel makes an
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