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There is a maximum depth at which a diver can breathe through asnorkel tube because as the depth increase, so does the pressuredifference, tending to collapse the diver's lungs. Since thesnorkel connects the air in the lungs to the atmosphere at thesurface, the pressure insid the lungs is atmospheric pressure. What is the external-internal pressure differnece when the diver's lungsare at a depth of 6.1m ? assume that the diver is in freshwater.
A frictionless plane is 9.4 m long and inclined at 31.9. A sled starts at the bottom with an initial speed of 5.03 m/s up the incline. Find the initial speed of the second sled
A(n) 60-g ice cube at 0°C is placed in 730 g of water at 28°C. What is the final temperature of the mixture? °C
An 8.00 g bullet is fired into a 190 g block that is initially at rest at the edge of a table of 1.00 m height. Determine the initial speed of the bullet
A window air conditioner unit absorbs 9.85 104 J of heat per minute from the room being cooled and in the same time period deposits 1.47 105 J of heat into the outside air. What is the energy efficiency rating of the unit
A body is suspended vertically from an ideal spring of spring constant 3.4 N/m. The spring is initially in its relaxed position. What is the maximum kinetic energy of the body
A charged isolated metal sphere of diameter 24.0 cm has a potential of 7400 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surface of the sphere.
By holding a magnifying glass 24 cm from your desk lamp, you can focus an image of the lamp's bulb on a wall 1.6m from the lamp. What is the focal lenghth of your magnifying glass
A 1.25kg- ball begins rolling from rest with constant angular acceleration down a hill. how long will it take to make the next complete revolution
calculate the maximum range when radar operates at 10ghz and has peak power10 mwattsn ratio10dbantenna cross
A certain thin, uniform rod has a mass of 2 kg and length 3 m. To what shorter length must you trim it (discarding the smaller part) so that the remaining length has half the original moment of inertia about its end.
two masses are separated by 3.85m. the mass of objects are 5.98kg and 7.35 kg. how far is the center of mass of the system
A 22 kg block of iron drops out of the back of a pickup truck traveling at 55 mi/h. By roughly how much has the temperature of the iron increased
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